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| <div class="subTitle">org.apache.mahout.cf.taste.impl.model.mongodb</div> |
| <h2 title="Class MongoDBDataModel" class="title">Class MongoDBDataModel</h2> |
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| <li>org.apache.mahout.cf.taste.impl.model.mongodb.MongoDBDataModel</li> |
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| <dt>All Implemented Interfaces:</dt> |
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| <pre>public final class <span class="typeNameLabel">MongoDBDataModel</span> |
| extends <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> |
| implements <a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/model/DataModel.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.model">DataModel</a></pre> |
| <div class="block"><p>A <a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/model/DataModel.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.model"><code>DataModel</code></a> backed by a MongoDB database. This class expects a |
| collection in the database which contains a user ID (<code>long</code> or |
| <code>ObjectId</code>), item ID (<code>long</code> or |
| <code>ObjectId</code>), preference value (optional) and timestamps |
| ("created_at", "deleted_at").</p> |
| |
| <p>An example of a document in MongoDB:</p> |
| |
| <p><code>{ "_id" : ObjectId("4d7627bf6c7d47ade9fc7780"), |
| "user_id" : ObjectId("4c2209fef3924d31102bd84b"), |
| "item_id" : ObjectId(4c2209fef3924d31202bd853), |
| "preference" : 0.5, |
| "created_at" : "Tue Mar 23 2010 20:48:43 GMT-0400 (EDT)" } |
| </code></p> |
| |
| <p>Preference value is optional to accommodate applications that have no notion |
| of a preference value (that is, the user simply expresses a preference for |
| an item, but no degree of preference).</p> |
| |
| <p>The preference value is assumed to be parseable as a <code>double</code>.</p> |
| |
| <p>The user IDs and item IDs are assumed to be parseable as <code>long</code>s |
| or <code>ObjectId</code>s. In case of <code>ObjectId</code>s, the |
| model creates a <code>Map<ObjectId></code>, <code>long</code>> |
| (collection "mongo_data_model_map") inside the MongoDB database. This |
| conversion is needed since Mahout uses the long datatype to feed the |
| recommender, and MongoDB uses 12 bytes to create its identifiers.</p> |
| |
| <p>The timestamps ("created_at", "deleted_at"), if present, are assumed to be |
| parseable as a <code>long</code> or <a href="http://docs.oracle.com/javase/7/docs/api/java/util/Date.html?is-external=true" title="class or interface in java.util"><code>Date</code></a>. To express |
| timestamps as <a href="http://docs.oracle.com/javase/7/docs/api/java/util/Date.html?is-external=true" title="class or interface in java.util"><code>Date</code></a>s, a <a href="http://docs.oracle.com/javase/7/docs/api/java/text/DateFormat.html?is-external=true" title="class or interface in java.text"><code>DateFormat</code></a> |
| must be provided in the class constructor. The default Date format is |
| <code>"EE MMM dd yyyy HH:mm:ss 'GMT'Z (zzz)"</code>. If this parameter |
| is set to null, timestamps are assumed to be parseable as <code>long</code>s. |
| </p> |
| |
| <p>It is also acceptable for the documents to contain additional fields. |
| Those fields will be ignored.</p> |
| |
| <p>This class will reload data from the MondoDB database when |
| <a href="../../../../../../../../org/apache/mahout/cf/taste/impl/model/mongodb/MongoDBDataModel.html#refresh-java.util.Collection-"><code>refresh(Collection)</code></a> is called. MongoDBDataModel keeps the |
| timestamp of the last update. This variable and the fields "created_at" |
| and "deleted_at" help the model to determine if the triple |
| (user, item, preference) must be added or deleted.</p></div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../../../serialized-form.html#org.apache.mahout.cf.taste.impl.model.mongodb.MongoDBDataModel">Serialized Form</a></dd> |
| </dl> |
| </li> |
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| <h3>Field Summary</h3> |
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| <caption><span>Fields</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Field and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/mahout/cf/taste/impl/model/mongodb/MongoDBDataModel.html#DEFAULT_MONGO_MAP_COLLECTION">DEFAULT_MONGO_MAP_COLLECTION</a></span></code> </td> |
| </tr> |
| </table> |
| </li> |
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| <!-- ======== CONSTRUCTOR SUMMARY ======== --> |
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| <li class="blockList"><a name="constructor.summary"> |
| <!-- --> |
| </a> |
| <h3>Constructor Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Constructor Summary table, listing constructors, and an explanation"> |
| <caption><span>Constructors</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colOne" scope="col">Constructor and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/mahout/cf/taste/impl/model/mongodb/MongoDBDataModel.html#MongoDBDataModel--">MongoDBDataModel</a></span>()</code> |
| <div class="block">Creates a new MongoDBDataModel</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/mahout/cf/taste/impl/model/mongodb/MongoDBDataModel.html#MongoDBDataModel-java.lang.String-int-java.lang.String-java.lang.String-boolean-boolean-java.text.DateFormat-">MongoDBDataModel</a></span>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> host, |
| int port, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> database, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> collection, |
| boolean manage, |
| boolean finalRemove, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/text/DateFormat.html?is-external=true" title="class or interface in java.text">DateFormat</a> format)</code> |
| <div class="block">Creates a new MongoDBDataModel with MongoDB basic configuration |
| (without authentication)</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/mahout/cf/taste/impl/model/mongodb/MongoDBDataModel.html#MongoDBDataModel-java.lang.String-int-java.lang.String-java.lang.String-boolean-boolean-java.text.DateFormat-java.lang.String-java.lang.String-">MongoDBDataModel</a></span>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> host, |
| int port, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> database, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> collection, |
| boolean manage, |
| boolean finalRemove, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/text/DateFormat.html?is-external=true" title="class or interface in java.text">DateFormat</a> format, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> user, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> password)</code> |
| <div class="block">Creates a new MongoDBDataModel with MongoDB basic configuration |
| (with authentication)</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/mahout/cf/taste/impl/model/mongodb/MongoDBDataModel.html#MongoDBDataModel-java.lang.String-int-java.lang.String-java.lang.String-boolean-boolean-java.text.DateFormat-java.lang.String-java.lang.String-java.lang.String-java.lang.String-">MongoDBDataModel</a></span>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> host, |
| int port, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> database, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> collection, |
| boolean manage, |
| boolean finalRemove, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/text/DateFormat.html?is-external=true" title="class or interface in java.text">DateFormat</a> format, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> userIDField, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> itemIDField, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> preferenceField, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> mappingCollection)</code> |
| <div class="block">Creates a new MongoDBDataModel with MongoDB advanced configuration |
| (without authentication)</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/mahout/cf/taste/impl/model/mongodb/MongoDBDataModel.html#MongoDBDataModel-java.lang.String-int-java.lang.String-java.lang.String-boolean-boolean-java.text.DateFormat-java.lang.String-java.lang.String-java.lang.String-java.lang.String-java.lang.String-java.lang.String-">MongoDBDataModel</a></span>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> host, |
| int port, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> database, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> collection, |
| boolean manage, |
| boolean finalRemove, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/text/DateFormat.html?is-external=true" title="class or interface in java.text">DateFormat</a> format, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> user, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> password, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> userIDField, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> itemIDField, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> preferenceField, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> mappingCollection)</code> |
| <div class="block">Creates a new MongoDBDataModel with MongoDB advanced configuration |
| (with authentication)</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| <!-- ========== METHOD SUMMARY =========== --> |
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| <h3>Method Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> |
| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/mahout/cf/taste/impl/model/mongodb/MongoDBDataModel.html#cleanupMappingCollection--">cleanupMappingCollection</a></span>()</code> |
| <div class="block">Cleanup mapping collection.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/mahout/cf/taste/impl/model/mongodb/MongoDBDataModel.html#fromIdToLong-java.lang.String-boolean-">fromIdToLong</a></span>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> id, |
| boolean isUser)</code> |
| <div class="block"> |
| Translates the MongoDB identifier to Mahout/MongoDBDataModel's internal |
| identifier, if required.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/mahout/cf/taste/impl/model/mongodb/MongoDBDataModel.html#fromLongToId-long-">fromLongToId</a></span>(long id)</code> |
| <div class="block"> |
| Translates the Mahout/MongoDBDataModel's internal identifier to MongoDB |
| identifier, if required.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code><a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/impl/common/LongPrimitiveIterator.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.impl.common">LongPrimitiveIterator</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/mahout/cf/taste/impl/model/mongodb/MongoDBDataModel.html#getItemIDs--">getItemIDs</a></span>()</code> </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code><a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/impl/common/FastIDSet.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.impl.common">FastIDSet</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/mahout/cf/taste/impl/model/mongodb/MongoDBDataModel.html#getItemIDsFromUser-long-">getItemIDsFromUser</a></span>(long userID)</code> </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>float</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/mahout/cf/taste/impl/model/mongodb/MongoDBDataModel.html#getMaxPreference--">getMaxPreference</a></span>()</code> </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>float</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/mahout/cf/taste/impl/model/mongodb/MongoDBDataModel.html#getMinPreference--">getMinPreference</a></span>()</code> </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/mahout/cf/taste/impl/model/mongodb/MongoDBDataModel.html#getNumItems--">getNumItems</a></span>()</code> </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/mahout/cf/taste/impl/model/mongodb/MongoDBDataModel.html#getNumUsers--">getNumUsers</a></span>()</code> </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/mahout/cf/taste/impl/model/mongodb/MongoDBDataModel.html#getNumUsersWithPreferenceFor-long-">getNumUsersWithPreferenceFor</a></span>(long itemID)</code> </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/mahout/cf/taste/impl/model/mongodb/MongoDBDataModel.html#getNumUsersWithPreferenceFor-long-long-">getNumUsersWithPreferenceFor</a></span>(long itemID1, |
| long itemID2)</code> </td> |
| </tr> |
| <tr id="i11" class="rowColor"> |
| <td class="colFirst"><code><a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/model/PreferenceArray.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.model">PreferenceArray</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/mahout/cf/taste/impl/model/mongodb/MongoDBDataModel.html#getPreferencesForItem-long-">getPreferencesForItem</a></span>(long itemID)</code> </td> |
| </tr> |
| <tr id="i12" class="altColor"> |
| <td class="colFirst"><code><a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/model/PreferenceArray.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.model">PreferenceArray</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/mahout/cf/taste/impl/model/mongodb/MongoDBDataModel.html#getPreferencesFromUser-long-">getPreferencesFromUser</a></span>(long id)</code> </td> |
| </tr> |
| <tr id="i13" class="rowColor"> |
| <td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Long.html?is-external=true" title="class or interface in java.lang">Long</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/mahout/cf/taste/impl/model/mongodb/MongoDBDataModel.html#getPreferenceTime-long-long-">getPreferenceTime</a></span>(long userID, |
| long itemID)</code> </td> |
| </tr> |
| <tr id="i14" class="altColor"> |
| <td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Float.html?is-external=true" title="class or interface in java.lang">Float</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/mahout/cf/taste/impl/model/mongodb/MongoDBDataModel.html#getPreferenceValue-long-long-">getPreferenceValue</a></span>(long userID, |
| long itemID)</code> </td> |
| </tr> |
| <tr id="i15" class="rowColor"> |
| <td class="colFirst"><code><a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/impl/common/LongPrimitiveIterator.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.impl.common">LongPrimitiveIterator</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/mahout/cf/taste/impl/model/mongodb/MongoDBDataModel.html#getUserIDs--">getUserIDs</a></span>()</code> </td> |
| </tr> |
| <tr id="i16" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/mahout/cf/taste/impl/model/mongodb/MongoDBDataModel.html#hasPreferenceValues--">hasPreferenceValues</a></span>()</code> </td> |
| </tr> |
| <tr id="i17" class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/mahout/cf/taste/impl/model/mongodb/MongoDBDataModel.html#isIDInModel-java.lang.String-">isIDInModel</a></span>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> ID)</code> |
| <div class="block"> |
| Checks if an ID is currently in the model.</div> |
| </td> |
| </tr> |
| <tr id="i18" class="altColor"> |
| <td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/util/Date.html?is-external=true" title="class or interface in java.util">Date</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/mahout/cf/taste/impl/model/mongodb/MongoDBDataModel.html#mongoUpdateDate--">mongoUpdateDate</a></span>()</code> |
| <div class="block"> |
| Date of the latest update of the model.</div> |
| </td> |
| </tr> |
| <tr id="i19" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/mahout/cf/taste/impl/model/mongodb/MongoDBDataModel.html#refresh-java.util.Collection-">refresh</a></span>(<a href="http://docs.oracle.com/javase/7/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><<a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/common/Refreshable.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.common">Refreshable</a>> alreadyRefreshed)</code> |
| <div class="block"> |
| Triggers "refresh" -- whatever that means -- of the implementation.</div> |
| </td> |
| </tr> |
| <tr id="i20" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/mahout/cf/taste/impl/model/mongodb/MongoDBDataModel.html#refreshData-java.lang.String-java.lang.Iterable-boolean-">refreshData</a></span>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> userID, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang">Iterable</a><<a href="http://docs.oracle.com/javase/7/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>>> items, |
| boolean add)</code> |
| <div class="block"> |
| Adds/removes (user, item) pairs to/from the model.</div> |
| </td> |
| </tr> |
| <tr id="i21" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/mahout/cf/taste/impl/model/mongodb/MongoDBDataModel.html#removePreference-long-long-">removePreference</a></span>(long userID, |
| long itemID)</code> </td> |
| </tr> |
| <tr id="i22" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/mahout/cf/taste/impl/model/mongodb/MongoDBDataModel.html#setPreference-long-long-float-">setPreference</a></span>(long userID, |
| long itemID, |
| float value)</code> </td> |
| </tr> |
| <tr id="i23" class="rowColor"> |
| <td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/mahout/cf/taste/impl/model/mongodb/MongoDBDataModel.html#toString--">toString</a></span>()</code> </td> |
| </tr> |
| </table> |
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| <h3>Methods inherited from class java.lang.<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3> |
| <code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| <div class="details"> |
| <ul class="blockList"> |
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| <!-- ============ FIELD DETAIL =========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="field.detail"> |
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| </a> |
| <h3>Field Detail</h3> |
| <a name="DEFAULT_MONGO_MAP_COLLECTION"> |
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| <h4>DEFAULT_MONGO_MAP_COLLECTION</h4> |
| <pre>public static final <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> DEFAULT_MONGO_MAP_COLLECTION</pre> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../../../constant-values.html#org.apache.mahout.cf.taste.impl.model.mongodb.MongoDBDataModel.DEFAULT_MONGO_MAP_COLLECTION">Constant Field Values</a></dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
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| </a> |
| <h3>Constructor Detail</h3> |
| <a name="MongoDBDataModel--"> |
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| <h4>MongoDBDataModel</h4> |
| <pre>public MongoDBDataModel() |
| throws <a href="http://docs.oracle.com/javase/7/docs/api/java/net/UnknownHostException.html?is-external=true" title="class or interface in java.net">UnknownHostException</a></pre> |
| <div class="block">Creates a new MongoDBDataModel</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/net/UnknownHostException.html?is-external=true" title="class or interface in java.net">UnknownHostException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="MongoDBDataModel-java.lang.String-int-java.lang.String-java.lang.String-boolean-boolean-java.text.DateFormat-"> |
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| <h4>MongoDBDataModel</h4> |
| <pre>public MongoDBDataModel(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> host, |
| int port, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> database, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> collection, |
| boolean manage, |
| boolean finalRemove, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/text/DateFormat.html?is-external=true" title="class or interface in java.text">DateFormat</a> format) |
| throws <a href="http://docs.oracle.com/javase/7/docs/api/java/net/UnknownHostException.html?is-external=true" title="class or interface in java.net">UnknownHostException</a></pre> |
| <div class="block">Creates a new MongoDBDataModel with MongoDB basic configuration |
| (without authentication)</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>host</code> - MongoDB host.</dd> |
| <dd><code>port</code> - MongoDB port. Default: 27017</dd> |
| <dd><code>database</code> - MongoDB database</dd> |
| <dd><code>collection</code> - MongoDB collection/table</dd> |
| <dd><code>manage</code> - If true, the model adds and removes users and items |
| from MongoDB database when the model is refreshed.</dd> |
| <dd><code>finalRemove</code> - If true, the model removes the user/item completely |
| from the MongoDB database. If false, the model adds the "deleted_at" |
| field with the current date to the "deleted" user/item.</dd> |
| <dd><code>format</code> - MongoDB date format. If null, the model uses timestamps.</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/net/UnknownHostException.html?is-external=true" title="class or interface in java.net">UnknownHostException</a></code> - if the database host cannot be resolved</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="MongoDBDataModel-java.lang.String-int-java.lang.String-java.lang.String-boolean-boolean-java.text.DateFormat-java.lang.String-java.lang.String-java.lang.String-java.lang.String-"> |
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| <h4>MongoDBDataModel</h4> |
| <pre>public MongoDBDataModel(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> host, |
| int port, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> database, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> collection, |
| boolean manage, |
| boolean finalRemove, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/text/DateFormat.html?is-external=true" title="class or interface in java.text">DateFormat</a> format, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> userIDField, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> itemIDField, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> preferenceField, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> mappingCollection) |
| throws <a href="http://docs.oracle.com/javase/7/docs/api/java/net/UnknownHostException.html?is-external=true" title="class or interface in java.net">UnknownHostException</a></pre> |
| <div class="block">Creates a new MongoDBDataModel with MongoDB advanced configuration |
| (without authentication)</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>userIDField</code> - Mongo user ID field</dd> |
| <dd><code>itemIDField</code> - Mongo item ID field</dd> |
| <dd><code>preferenceField</code> - Mongo preference value field</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/net/UnknownHostException.html?is-external=true" title="class or interface in java.net">UnknownHostException</a></code> - if the database host cannot be resolved</dd> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../../../org/apache/mahout/cf/taste/impl/model/mongodb/MongoDBDataModel.html#MongoDBDataModel-java.lang.String-int-java.lang.String-java.lang.String-boolean-boolean-java.text.DateFormat-"><code>MongoDBDataModel(String, int, String, String, boolean, boolean, DateFormat)</code></a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="MongoDBDataModel-java.lang.String-int-java.lang.String-java.lang.String-boolean-boolean-java.text.DateFormat-java.lang.String-java.lang.String-"> |
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| <h4>MongoDBDataModel</h4> |
| <pre>public MongoDBDataModel(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> host, |
| int port, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> database, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> collection, |
| boolean manage, |
| boolean finalRemove, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/text/DateFormat.html?is-external=true" title="class or interface in java.text">DateFormat</a> format, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> user, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> password) |
| throws <a href="http://docs.oracle.com/javase/7/docs/api/java/net/UnknownHostException.html?is-external=true" title="class or interface in java.net">UnknownHostException</a></pre> |
| <div class="block">Creates a new MongoDBDataModel with MongoDB basic configuration |
| (with authentication)</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>user</code> - Mongo username (authentication)</dd> |
| <dd><code>password</code> - Mongo password (authentication)</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/net/UnknownHostException.html?is-external=true" title="class or interface in java.net">UnknownHostException</a></code> - if the database host cannot be resolved</dd> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../../../org/apache/mahout/cf/taste/impl/model/mongodb/MongoDBDataModel.html#MongoDBDataModel-java.lang.String-int-java.lang.String-java.lang.String-boolean-boolean-java.text.DateFormat-"><code>MongoDBDataModel(String, int, String, String, boolean, boolean, DateFormat)</code></a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="MongoDBDataModel-java.lang.String-int-java.lang.String-java.lang.String-boolean-boolean-java.text.DateFormat-java.lang.String-java.lang.String-java.lang.String-java.lang.String-java.lang.String-java.lang.String-"> |
| <!-- --> |
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| <h4>MongoDBDataModel</h4> |
| <pre>public MongoDBDataModel(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> host, |
| int port, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> database, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> collection, |
| boolean manage, |
| boolean finalRemove, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/text/DateFormat.html?is-external=true" title="class or interface in java.text">DateFormat</a> format, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> user, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> password, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> userIDField, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> itemIDField, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> preferenceField, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> mappingCollection) |
| throws <a href="http://docs.oracle.com/javase/7/docs/api/java/net/UnknownHostException.html?is-external=true" title="class or interface in java.net">UnknownHostException</a></pre> |
| <div class="block">Creates a new MongoDBDataModel with MongoDB advanced configuration |
| (with authentication)</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/net/UnknownHostException.html?is-external=true" title="class or interface in java.net">UnknownHostException</a></code> - if the database host cannot be resolved</dd> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../../../org/apache/mahout/cf/taste/impl/model/mongodb/MongoDBDataModel.html#MongoDBDataModel-java.lang.String-int-java.lang.String-java.lang.String-boolean-boolean-java.text.DateFormat-java.lang.String-java.lang.String-"><code>MongoDBDataModel(String, int, String, String, boolean, boolean, DateFormat, String, String)</code></a></dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
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| <a name="refreshData-java.lang.String-java.lang.Iterable-boolean-"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>refreshData</h4> |
| <pre>public void refreshData(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> userID, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang">Iterable</a><<a href="http://docs.oracle.com/javase/7/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>>> items, |
| boolean add) |
| throws <a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/common/NoSuchUserException.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.common">NoSuchUserException</a>, |
| <a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/common/NoSuchItemException.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.common">NoSuchItemException</a></pre> |
| <div class="block"><p> |
| Adds/removes (user, item) pairs to/from the model. |
| </p></div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>userID</code> - MongoDB user identifier</dd> |
| <dd><code>items</code> - List of pairs (item, preference) which want to be added or |
| deleted</dd> |
| <dd><code>add</code> - If true, this flag indicates that the pairs (user, item) |
| must be added to the model. If false, it indicates deletion.</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/common/NoSuchUserException.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.common">NoSuchUserException</a></code></dd> |
| <dd><code><a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/common/NoSuchItemException.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.common">NoSuchItemException</a></code></dd> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../../../org/apache/mahout/cf/taste/impl/model/mongodb/MongoDBDataModel.html#refresh-java.util.Collection-"><code>refresh(Collection)</code></a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="refresh-java.util.Collection-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>refresh</h4> |
| <pre>public void refresh(<a href="http://docs.oracle.com/javase/7/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><<a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/common/Refreshable.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.common">Refreshable</a>> alreadyRefreshed)</pre> |
| <div class="block"><p> |
| Triggers "refresh" -- whatever that means -- of the implementation. |
| The general contract is that any should always leave itself in a |
| consistent, operational state, and that the refresh atomically updates |
| internal state from old to new. |
| </p></div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/common/Refreshable.html?is-external=true#refresh-java.util.Collection-" title="class or interface in org.apache.mahout.cf.taste.common">refresh</a></code> in interface <code><a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/common/Refreshable.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.common">Refreshable</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>alreadyRefreshed</code> - s that are known to have already been refreshed as |
| a result of an initial call to a method on some object. This ensures |
| that objects in a refresh dependency graph aren't refreshed twice |
| needlessly.</dd> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../../../org/apache/mahout/cf/taste/impl/model/mongodb/MongoDBDataModel.html#refreshData-java.lang.String-java.lang.Iterable-boolean-"><code>refreshData(String, Iterable, boolean)</code></a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="fromIdToLong-java.lang.String-boolean-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>fromIdToLong</h4> |
| <pre>public <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> fromIdToLong(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> id, |
| boolean isUser)</pre> |
| <div class="block"><p> |
| Translates the MongoDB identifier to Mahout/MongoDBDataModel's internal |
| identifier, if required. |
| </p> |
| <p> |
| If MongoDB identifiers are long datatypes, it returns the id. |
| </p> |
| <p> |
| This conversion is needed since Mahout uses the long datatype to feed the |
| recommender, and MongoDB uses 12 bytes to create its identifiers. |
| </p></div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>id</code> - MongoDB identifier</dd> |
| <dd><code>isUser</code> - </dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>String containing the translation of the external MongoDB ID to |
| internal long ID (mapping).</dd> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../../../org/apache/mahout/cf/taste/impl/model/mongodb/MongoDBDataModel.html#fromLongToId-long-"><code>fromLongToId(long)</code></a>, |
| <a href="http://www.mongodb.org/display/DOCS/Object%20IDs"> |
| Mongo Object IDs</a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="fromLongToId-long-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>fromLongToId</h4> |
| <pre>public <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> fromLongToId(long id)</pre> |
| <div class="block"><p> |
| Translates the Mahout/MongoDBDataModel's internal identifier to MongoDB |
| identifier, if required. |
| </p> |
| <p> |
| If MongoDB identifiers are long datatypes, it returns the id in String |
| format. |
| </p> |
| <p> |
| This conversion is needed since Mahout uses the long datatype to feed the |
| recommender, and MongoDB uses 12 bytes to create its identifiers. |
| </p></div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>id</code> - Mahout's internal identifier</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>String containing the translation of the internal long ID to |
| external MongoDB ID (mapping).</dd> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../../../org/apache/mahout/cf/taste/impl/model/mongodb/MongoDBDataModel.html#fromIdToLong-java.lang.String-boolean-"><code>fromIdToLong(String, boolean)</code></a>, |
| <a href="http://www.mongodb.org/display/DOCS/Object%20IDs"> |
| Mongo Object IDs</a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="isIDInModel-java.lang.String-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>isIDInModel</h4> |
| <pre>public boolean isIDInModel(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> ID)</pre> |
| <div class="block"><p> |
| Checks if an ID is currently in the model. |
| </p></div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>ID</code> - user or item ID</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>true: if ID is into the model; false: if it's not.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="mongoUpdateDate--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>mongoUpdateDate</h4> |
| <pre>public <a href="http://docs.oracle.com/javase/7/docs/api/java/util/Date.html?is-external=true" title="class or interface in java.util">Date</a> mongoUpdateDate()</pre> |
| <div class="block"><p> |
| Date of the latest update of the model. |
| </p></div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Date with the latest update of the model.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="cleanupMappingCollection--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>cleanupMappingCollection</h4> |
| <pre>public void cleanupMappingCollection()</pre> |
| <div class="block">Cleanup mapping collection.</div> |
| </li> |
| </ul> |
| <a name="getUserIDs--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getUserIDs</h4> |
| <pre>public <a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/impl/common/LongPrimitiveIterator.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.impl.common">LongPrimitiveIterator</a> getUserIDs() |
| throws <a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/common/TasteException.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.common">TasteException</a></pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/model/DataModel.html?is-external=true#getUserIDs--" title="class or interface in org.apache.mahout.cf.taste.model">getUserIDs</a></code> in interface <code><a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/model/DataModel.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.model">DataModel</a></code></dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/common/TasteException.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.common">TasteException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getPreferencesFromUser-long-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getPreferencesFromUser</h4> |
| <pre>public <a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/model/PreferenceArray.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.model">PreferenceArray</a> getPreferencesFromUser(long id) |
| throws <a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/common/TasteException.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.common">TasteException</a></pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/model/DataModel.html?is-external=true#getPreferencesFromUser-long-" title="class or interface in org.apache.mahout.cf.taste.model">getPreferencesFromUser</a></code> in interface <code><a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/model/DataModel.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.model">DataModel</a></code></dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/common/TasteException.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.common">TasteException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getItemIDsFromUser-long-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getItemIDsFromUser</h4> |
| <pre>public <a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/impl/common/FastIDSet.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.impl.common">FastIDSet</a> getItemIDsFromUser(long userID) |
| throws <a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/common/TasteException.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.common">TasteException</a></pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/model/DataModel.html?is-external=true#getItemIDsFromUser-long-" title="class or interface in org.apache.mahout.cf.taste.model">getItemIDsFromUser</a></code> in interface <code><a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/model/DataModel.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.model">DataModel</a></code></dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/common/TasteException.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.common">TasteException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getItemIDs--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getItemIDs</h4> |
| <pre>public <a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/impl/common/LongPrimitiveIterator.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.impl.common">LongPrimitiveIterator</a> getItemIDs() |
| throws <a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/common/TasteException.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.common">TasteException</a></pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/model/DataModel.html?is-external=true#getItemIDs--" title="class or interface in org.apache.mahout.cf.taste.model">getItemIDs</a></code> in interface <code><a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/model/DataModel.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.model">DataModel</a></code></dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/common/TasteException.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.common">TasteException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getPreferencesForItem-long-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getPreferencesForItem</h4> |
| <pre>public <a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/model/PreferenceArray.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.model">PreferenceArray</a> getPreferencesForItem(long itemID) |
| throws <a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/common/TasteException.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.common">TasteException</a></pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/model/DataModel.html?is-external=true#getPreferencesForItem-long-" title="class or interface in org.apache.mahout.cf.taste.model">getPreferencesForItem</a></code> in interface <code><a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/model/DataModel.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.model">DataModel</a></code></dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/common/TasteException.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.common">TasteException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getPreferenceValue-long-long-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getPreferenceValue</h4> |
| <pre>public <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Float.html?is-external=true" title="class or interface in java.lang">Float</a> getPreferenceValue(long userID, |
| long itemID) |
| throws <a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/common/TasteException.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.common">TasteException</a></pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/model/DataModel.html?is-external=true#getPreferenceValue-long-long-" title="class or interface in org.apache.mahout.cf.taste.model">getPreferenceValue</a></code> in interface <code><a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/model/DataModel.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.model">DataModel</a></code></dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/common/TasteException.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.common">TasteException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getPreferenceTime-long-long-"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getPreferenceTime</h4> |
| <pre>public <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Long.html?is-external=true" title="class or interface in java.lang">Long</a> getPreferenceTime(long userID, |
| long itemID) |
| throws <a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/common/TasteException.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.common">TasteException</a></pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/model/DataModel.html?is-external=true#getPreferenceTime-long-long-" title="class or interface in org.apache.mahout.cf.taste.model">getPreferenceTime</a></code> in interface <code><a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/model/DataModel.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.model">DataModel</a></code></dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/common/TasteException.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.common">TasteException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getNumItems--"> |
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| </a> |
| <ul class="blockList"> |
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| <h4>getNumItems</h4> |
| <pre>public int getNumItems() |
| throws <a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/common/TasteException.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.common">TasteException</a></pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/model/DataModel.html?is-external=true#getNumItems--" title="class or interface in org.apache.mahout.cf.taste.model">getNumItems</a></code> in interface <code><a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/model/DataModel.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.model">DataModel</a></code></dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/common/TasteException.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.common">TasteException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getNumUsers--"> |
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| </a> |
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| <h4>getNumUsers</h4> |
| <pre>public int getNumUsers() |
| throws <a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/common/TasteException.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.common">TasteException</a></pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/model/DataModel.html?is-external=true#getNumUsers--" title="class or interface in org.apache.mahout.cf.taste.model">getNumUsers</a></code> in interface <code><a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/model/DataModel.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.model">DataModel</a></code></dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
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| <dd><code><a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/model/DataModel.html?is-external=true#getMaxPreference--" title="class or interface in org.apache.mahout.cf.taste.model">getMaxPreference</a></code> in interface <code><a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/cf/taste/model/DataModel.html?is-external=true" title="class or interface in org.apache.mahout.cf.taste.model">DataModel</a></code></dd> |
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