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| <div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">org.apache.cayenne</a></div> |
| <h2 title="Interface ObjectContext" class="title">Interface ObjectContext</h2> |
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| <dt>All Superinterfaces:</dt> |
| <dd><code><a href="DataChannel.html" title="interface in org.apache.cayenne">DataChannel</a></code>, <code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io" class="externalLink">Serializable</a></code></dd> |
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| <dt>All Known Implementing Classes:</dt> |
| <dd><code><a href="BaseContext.html" title="class in org.apache.cayenne">BaseContext</a></code>, <code><a href="access/DataContext.html" title="class in org.apache.cayenne.access">DataContext</a></code></dd> |
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| <pre>public interface <span class="typeNameLabel">ObjectContext</span> |
| extends <a href="DataChannel.html" title="interface in org.apache.cayenne">DataChannel</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io" class="externalLink">Serializable</a></pre> |
| <div class="block">A Cayenne object facade to a persistent store. Instances of ObjectContext are |
| used in the application code to access Cayenne persistence features.</div> |
| <dl> |
| <dt><span class="simpleTagLabel">Since:</span></dt> |
| <dd>1.2</dd> |
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| <h3>Fields inherited from interface org.apache.cayenne.<a href="DataChannel.html" title="interface in org.apache.cayenne">DataChannel</a></h3> |
| <code><a href="DataChannel.html#FLUSH_CASCADE_SYNC">FLUSH_CASCADE_SYNC</a>, <a href="DataChannel.html#FLUSH_NOCASCADE_SYNC">FLUSH_NOCASCADE_SYNC</a>, <a href="DataChannel.html#GRAPH_CHANGED_SUBJECT">GRAPH_CHANGED_SUBJECT</a>, <a href="DataChannel.html#GRAPH_FLUSHED_SUBJECT">GRAPH_FLUSHED_SUBJECT</a>, <a href="DataChannel.html#GRAPH_ROLLEDBACK_SUBJECT">GRAPH_ROLLEDBACK_SUBJECT</a>, <a href="DataChannel.html#ROLLBACK_CASCADE_SYNC">ROLLBACK_CASCADE_SYNC</a></code></li> |
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| <h3>Method Summary</h3> |
| <table class="memberSummary"> |
| <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="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colSecond" scope="col">Method</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code><T> <a href="ResultBatchIterator.html" title="class in org.apache.cayenne">ResultBatchIterator</a><T></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#batchIterator(org.apache.cayenne.query.Select,int)">batchIterator</a></span>​(<a href="query/Select.html" title="interface in org.apache.cayenne.query">Select</a><T> query, |
| int size)</code></th> |
| <td class="colLast"> |
| <div class="block">Creates a ResultBatchIterator based on the provided query and batch size.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#commitChanges()">commitChanges</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Flushes all changes to objects in this context to the parent DataChannel, |
| cascading flush operation all the way through the stack, ultimately |
| saving data in the database.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#commitChangesToParent()">commitChangesToParent</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Flushes all changes to objects in this context to the parent DataChannel.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util" class="externalLink">Collection</a><?></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#deletedObjects()">deletedObjects</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns a collection of objects that are registered with this |
| ObjectContext and have a state PersistenceState.DELETED</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#deleteObject(java.lang.Object)">deleteObject</a></span>​(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a> object)</code></th> |
| <td class="colLast"> |
| <div class="block">Schedules deletion of a persistent object.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#deleteObjects(java.util.Collection)">deleteObjects</a></span>​(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util" class="externalLink">Collection</a><?> objects)</code></th> |
| <td class="colLast"> |
| <div class="block">Schedules deletion of a collection of persistent objects.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code><T> void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#deleteObjects(T...)">deleteObjects</a></span>​(T... objects)</code></th> |
| <td class="colLast"> |
| <div class="block">Schedules deletion of one or more persistent objects.</div> |
| </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code><a href="DataChannel.html" title="interface in org.apache.cayenne">DataChannel</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getChannel()">getChannel</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns an DataChannel used by this context.</div> |
| </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code><a href="map/EntityResolver.html" title="class in org.apache.cayenne.map">EntityResolver</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getEntityResolver()">getEntityResolver</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns EntityResolver that stores all mapping information accessible by |
| this ObjectContext.</div> |
| </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code><a href="graph/GraphManager.html" title="interface in org.apache.cayenne.graph">GraphManager</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getGraphManager()">getGraphManager</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns GraphManager that manages object graph associated with this |
| context.</div> |
| </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getUserProperty(java.lang.String)">getUserProperty</a></span>​(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a> key)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns a user-defined property previously set via 'setUserProperty'.</div> |
| </td> |
| </tr> |
| <tr id="i11" class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#hasChanges()">hasChanges</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns <code>true</code> if there are any modified, deleted or new |
| objects registered with this ObjectContext, <code>false</code> otherwise.</div> |
| </td> |
| </tr> |
| <tr id="i12" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#invalidateObjects(java.util.Collection)">invalidateObjects</a></span>​(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util" class="externalLink">Collection</a><?> objects)</code></th> |
| <td class="colLast"> |
| <div class="block">Invalidates a Collection of persistent objects.</div> |
| </td> |
| </tr> |
| <tr id="i13" class="rowColor"> |
| <td class="colFirst"><code><T> void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#invalidateObjects(T...)">invalidateObjects</a></span>​(T... objects)</code></th> |
| <td class="colLast"> |
| <div class="block">Invalidates one or more persistent objects.</div> |
| </td> |
| </tr> |
| <tr id="i14" class="altColor"> |
| <td class="colFirst"><code><T> void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#iterate(org.apache.cayenne.query.Select,org.apache.cayenne.ResultIteratorCallback)">iterate</a></span>​(<a href="query/Select.html" title="interface in org.apache.cayenne.query">Select</a><T> query, |
| <a href="ResultIteratorCallback.html" title="interface in org.apache.cayenne">ResultIteratorCallback</a><T> callback)</code></th> |
| <td class="colLast"> |
| <div class="block">Creates a ResultIterator based on the provided query and passes it to a |
| callback for processing.</div> |
| </td> |
| </tr> |
| <tr id="i15" class="rowColor"> |
| <td class="colFirst"><code><T> <a href="ResultIterator.html" title="interface in org.apache.cayenne">ResultIterator</a><T></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#iterator(org.apache.cayenne.query.Select)">iterator</a></span>​(<a href="query/Select.html" title="interface in org.apache.cayenne.query">Select</a><T> query)</code></th> |
| <td class="colLast"> |
| <div class="block">Creates a ResultIterator based on the provided query.</div> |
| </td> |
| </tr> |
| <tr id="i16" class="altColor"> |
| <td class="colFirst"><code><T extends <a href="Persistent.html" title="interface in org.apache.cayenne">Persistent</a>><br>T</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#localObject(T)">localObject</a></span>​(T objectFromAnotherContext)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns a local copy of 'objectFromAnotherContext' object.</div> |
| </td> |
| </tr> |
| <tr id="i17" class="rowColor"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util" class="externalLink">Collection</a><?></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#modifiedObjects()">modifiedObjects</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns a collection of objects that are registered with this |
| ObjectContext and have a state PersistenceState.MODIFIED</div> |
| </td> |
| </tr> |
| <tr id="i18" class="altColor"> |
| <td class="colFirst"><code><T> T</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#newObject(java.lang.Class)">newObject</a></span>​(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang" class="externalLink">Class</a><T> persistentClass)</code></th> |
| <td class="colLast"> |
| <div class="block">Creates a new persistent object of a given class scheduled to be inserted |
| to the database on next commit.</div> |
| </td> |
| </tr> |
| <tr id="i19" class="rowColor"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util" class="externalLink">Collection</a><?></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#newObjects()">newObjects</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns a collection of objects that are registered with this |
| ObjectContext and have a state PersistenceState.NEW</div> |
| </td> |
| </tr> |
| <tr id="i20" class="altColor"> |
| <td class="colFirst"><code><a href="QueryResponse.html" title="interface in org.apache.cayenne">QueryResponse</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#performGenericQuery(org.apache.cayenne.query.Query)">performGenericQuery</a></span>​(<a href="query/Query.html" title="interface in org.apache.cayenne.query">Query</a> query)</code></th> |
| <td class="colLast"> |
| <div class="block">Executes any kind of query providing the result in a form of |
| QueryResponse.</div> |
| </td> |
| </tr> |
| <tr id="i21" class="rowColor"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util" class="externalLink">List</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#performQuery(org.apache.cayenne.query.Query)">performQuery</a></span>​(<a href="query/Query.html" title="interface in org.apache.cayenne.query">Query</a> query)</code></th> |
| <td class="colLast"> |
| <div class="block">Executes a selecting query, returning a list of persistent objects or |
| data rows.</div> |
| </td> |
| </tr> |
| <tr id="i22" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#prepareForAccess(org.apache.cayenne.Persistent,java.lang.String,boolean)">prepareForAccess</a></span>​(<a href="Persistent.html" title="interface in org.apache.cayenne">Persistent</a> object, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a> property, |
| boolean lazyFaulting)</code></th> |
| <td class="colLast"> |
| <div class="block">A callback method that child Persistent objects are expected to call |
| before accessing property values.</div> |
| </td> |
| </tr> |
| <tr id="i23" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#propertyChanged(org.apache.cayenne.Persistent,java.lang.String,java.lang.Object,java.lang.Object)">propertyChanged</a></span>​(<a href="Persistent.html" title="interface in org.apache.cayenne">Persistent</a> object, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a> property, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a> oldValue, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a> newValue)</code></th> |
| <td class="colLast"> |
| <div class="block">A callback method that child Persistent objects are expected to call from |
| inside the setter after modifying a value of a persistent property, |
| including "simple" and "arc" properties.</div> |
| </td> |
| </tr> |
| <tr id="i24" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#registerNewObject(java.lang.Object)">registerNewObject</a></span>​(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a> object)</code></th> |
| <td class="colLast"> |
| <div class="block">Registers a transient object with the context.</div> |
| </td> |
| </tr> |
| <tr id="i25" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#rollbackChanges()">rollbackChanges</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Resets all uncommitted changes made to the objects in this ObjectContext, |
| cascading rollback operation all the way through the stack.</div> |
| </td> |
| </tr> |
| <tr id="i26" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#rollbackChangesLocally()">rollbackChangesLocally</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Resets all uncommitted changes made to the objects in this ObjectContext.</div> |
| </td> |
| </tr> |
| <tr id="i27" class="rowColor"> |
| <td class="colFirst"><code><T> <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util" class="externalLink">List</a><T></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#select(org.apache.cayenne.query.Select)">select</a></span>​(<a href="query/Select.html" title="interface in org.apache.cayenne.query">Select</a><T> query)</code></th> |
| <td class="colLast"> |
| <div class="block">Executes a selecting query, returning a list of persistent objects or |
| data rows.</div> |
| </td> |
| </tr> |
| <tr id="i28" class="altColor"> |
| <td class="colFirst"><code><T> T</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#selectFirst(org.apache.cayenne.query.Select)">selectFirst</a></span>​(<a href="query/Select.html" title="interface in org.apache.cayenne.query">Select</a><T> query)</code></th> |
| <td class="colLast"> |
| <div class="block">Selects a single object using provided query.</div> |
| </td> |
| </tr> |
| <tr id="i29" class="rowColor"> |
| <td class="colFirst"><code><T> T</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#selectOne(org.apache.cayenne.query.Select)">selectOne</a></span>​(<a href="query/Select.html" title="interface in org.apache.cayenne.query">Select</a><T> query)</code></th> |
| <td class="colLast"> |
| <div class="block">Executes a selecting query, returning either NULL if query matched no |
| objects, or a single object.</div> |
| </td> |
| </tr> |
| <tr id="i30" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setUserProperty(java.lang.String,java.lang.Object)">setUserProperty</a></span>​(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a> key, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a> value)</code></th> |
| <td class="colLast"> |
| <div class="block">Sets a user-defined property.</div> |
| </td> |
| </tr> |
| <tr id="i31" class="rowColor"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util" class="externalLink">Collection</a><?></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#uncommittedObjects()">uncommittedObjects</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns a collection of MODIFIED, DELETED or NEW objects.</div> |
| </td> |
| </tr> |
| </table> |
| <ul class="blockList"> |
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| </a> |
| <h3>Methods inherited from interface org.apache.cayenne.<a href="DataChannel.html" title="interface in org.apache.cayenne">DataChannel</a></h3> |
| <code><a href="DataChannel.html#getEventManager()">getEventManager</a>, <a href="DataChannel.html#onQuery(org.apache.cayenne.ObjectContext,org.apache.cayenne.query.Query)">onQuery</a>, <a href="DataChannel.html#onSync(org.apache.cayenne.ObjectContext,org.apache.cayenne.graph.GraphDiff,int)">onSync</a></code></li> |
| </ul> |
| </li> |
| </ul> |
| </section> |
| </li> |
| </ul> |
| </div> |
| <div class="details"> |
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| <!-- ============ METHOD DETAIL ========== --> |
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| <h3>Method Detail</h3> |
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| <h4>getEntityResolver</h4> |
| <pre class="methodSignature"><a href="map/EntityResolver.html" title="class in org.apache.cayenne.map">EntityResolver</a> getEntityResolver()</pre> |
| <div class="block">Returns EntityResolver that stores all mapping information accessible by |
| this ObjectContext.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="DataChannel.html#getEntityResolver()">getEntityResolver</a></code> in interface <code><a href="DataChannel.html" title="interface in org.apache.cayenne">DataChannel</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="newObjects()"> |
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| <h4>newObjects</h4> |
| <pre class="methodSignature"><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util" class="externalLink">Collection</a><?> newObjects()</pre> |
| <div class="block">Returns a collection of objects that are registered with this |
| ObjectContext and have a state PersistenceState.NEW</div> |
| </li> |
| </ul> |
| <a id="deletedObjects()"> |
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| <h4>deletedObjects</h4> |
| <pre class="methodSignature"><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util" class="externalLink">Collection</a><?> deletedObjects()</pre> |
| <div class="block">Returns a collection of objects that are registered with this |
| ObjectContext and have a state PersistenceState.DELETED</div> |
| </li> |
| </ul> |
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| <h4>modifiedObjects</h4> |
| <pre class="methodSignature"><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util" class="externalLink">Collection</a><?> modifiedObjects()</pre> |
| <div class="block">Returns a collection of objects that are registered with this |
| ObjectContext and have a state PersistenceState.MODIFIED</div> |
| </li> |
| </ul> |
| <a id="uncommittedObjects()"> |
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| <h4>uncommittedObjects</h4> |
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| <div class="block">Returns a collection of MODIFIED, DELETED or NEW objects.</div> |
| </li> |
| </ul> |
| <a id="localObject(org.apache.cayenne.Persistent)"> |
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| </a><a id="localObject(T)"> |
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| <h4>localObject</h4> |
| <pre class="methodSignature"><T extends <a href="Persistent.html" title="interface in org.apache.cayenne">Persistent</a>> T localObject​(T objectFromAnotherContext)</pre> |
| <div class="block">Returns a local copy of 'objectFromAnotherContext' object. "Local" means |
| that the returned object is registered in this context. If the local |
| object hasn't been previously cached in this context, a hollow object is |
| created and returned to the caller. No DB query is performed to resolve |
| an object. |
| <p> |
| Note that passing an object with a non-existing id, may later result in |
| FaultFailureException on attempt to read returned object properties.</div> |
| <dl> |
| <dt><span class="simpleTagLabel">Since:</span></dt> |
| <dd>3.1</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="newObject(java.lang.Class)"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>newObject</h4> |
| <pre class="methodSignature"><T> T newObject​(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang" class="externalLink">Class</a><T> persistentClass)</pre> |
| <div class="block">Creates a new persistent object of a given class scheduled to be inserted |
| to the database on next commit.</div> |
| </li> |
| </ul> |
| <a id="registerNewObject(java.lang.Object)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
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| <h4>registerNewObject</h4> |
| <pre class="methodSignature">void registerNewObject​(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a> object)</pre> |
| <div class="block">Registers a transient object with the context. The difference with |
| <a href="#newObject(java.lang.Class)"><code>newObject(Class)</code></a> is that a user creates an object herself, |
| before attaching it to the context, instead of relying on Cayenne to do |
| that.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>object</code> - new object that needs to be made persistent.</dd> |
| <dt><span class="simpleTagLabel">Since:</span></dt> |
| <dd>3.0</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="deleteObject(java.lang.Object)"> |
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| <h4>deleteObject</h4> |
| <pre class="methodSignature">void deleteObject​(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a> object) |
| throws <a href="DeleteDenyException.html" title="class in org.apache.cayenne">DeleteDenyException</a></pre> |
| <div class="block">Schedules deletion of a persistent object.</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="DeleteDenyException.html" title="class in org.apache.cayenne">DeleteDenyException</a></code> - if a <a href="map/DeleteRule.html#DENY"><code>DeleteRule.DENY</code></a> delete |
| rule is applicable for object deletion.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="deleteObjects(java.util.Collection)"> |
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| <h4>deleteObjects</h4> |
| <pre class="methodSignature">void deleteObjects​(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util" class="externalLink">Collection</a><?> objects) |
| throws <a href="DeleteDenyException.html" title="class in org.apache.cayenne">DeleteDenyException</a></pre> |
| <div class="block">Schedules deletion of a collection of persistent objects.</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="DeleteDenyException.html" title="class in org.apache.cayenne">DeleteDenyException</a></code> - if a <a href="map/DeleteRule.html#DENY"><code>DeleteRule.DENY</code></a> delete |
| rule is applicable for object deletion.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="deleteObjects(java.lang.Object[])"> |
| <!-- --> |
| </a><a id="deleteObjects(T...)"> |
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| <h4>deleteObjects</h4> |
| <pre class="methodSignature"><T> void deleteObjects​(T... objects) |
| throws <a href="DeleteDenyException.html" title="class in org.apache.cayenne">DeleteDenyException</a></pre> |
| <div class="block">Schedules deletion of one or more persistent objects. Same as |
| <a href="#deleteObjects(java.util.Collection)"><code>deleteObjects(Collection)</code></a> only with a vararg argument list for |
| easier deletion of individual objects.</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="DeleteDenyException.html" title="class in org.apache.cayenne">DeleteDenyException</a></code> - if a <a href="map/DeleteRule.html#DENY"><code>DeleteRule.DENY</code></a> delete |
| rule is applicable for object deletion.</dd> |
| <dt><span class="simpleTagLabel">Since:</span></dt> |
| <dd>3.1</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="prepareForAccess(org.apache.cayenne.Persistent,java.lang.String,boolean)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>prepareForAccess</h4> |
| <pre class="methodSignature">void prepareForAccess​(<a href="Persistent.html" title="interface in org.apache.cayenne">Persistent</a> object, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a> property, |
| boolean lazyFaulting)</pre> |
| <div class="block">A callback method that child Persistent objects are expected to call |
| before accessing property values. This callback allows ObjectContext to |
| "inflate" unresolved objects on demand and also resolve properties that |
| rely on lazy faulting.</div> |
| <dl> |
| <dt><span class="simpleTagLabel">Since:</span></dt> |
| <dd>3.0</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="propertyChanged(org.apache.cayenne.Persistent,java.lang.String,java.lang.Object,java.lang.Object)"> |
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| <h4>propertyChanged</h4> |
| <pre class="methodSignature">void propertyChanged​(<a href="Persistent.html" title="interface in org.apache.cayenne">Persistent</a> object, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a> property, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a> oldValue, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a> newValue)</pre> |
| <div class="block">A callback method that child Persistent objects are expected to call from |
| inside the setter after modifying a value of a persistent property, |
| including "simple" and "arc" properties.</div> |
| </li> |
| </ul> |
| <a id="commitChanges()"> |
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| </a> |
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| <h4>commitChanges</h4> |
| <pre class="methodSignature">void commitChanges()</pre> |
| <div class="block">Flushes all changes to objects in this context to the parent DataChannel, |
| cascading flush operation all the way through the stack, ultimately |
| saving data in the database.</div> |
| </li> |
| </ul> |
| <a id="commitChangesToParent()"> |
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| </a> |
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| <h4>commitChangesToParent</h4> |
| <pre class="methodSignature">void commitChangesToParent()</pre> |
| <div class="block">Flushes all changes to objects in this context to the parent DataChannel. |
| Same as <a href="#commitChanges()"><code>commitChanges()</code></a>, but no cascading flush occurs.</div> |
| </li> |
| </ul> |
| <a id="rollbackChanges()"> |
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| <h4>rollbackChanges</h4> |
| <pre class="methodSignature">void rollbackChanges()</pre> |
| <div class="block">Resets all uncommitted changes made to the objects in this ObjectContext, |
| cascading rollback operation all the way through the stack.</div> |
| </li> |
| </ul> |
| <a id="rollbackChangesLocally()"> |
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| </a> |
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| <h4>rollbackChangesLocally</h4> |
| <pre class="methodSignature">void rollbackChangesLocally()</pre> |
| <div class="block">Resets all uncommitted changes made to the objects in this ObjectContext. |
| Same as <a href="#rollbackChanges()"><code>rollbackChanges()</code></a>, but rollback is local to this |
| context and no cascading changes undoing occurs.</div> |
| </li> |
| </ul> |
| <a id="performQuery(org.apache.cayenne.query.Query)"> |
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| <h4>performQuery</h4> |
| <pre class="methodSignature"><a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util" class="externalLink">List</a> performQuery​(<a href="query/Query.html" title="interface in org.apache.cayenne.query">Query</a> query)</pre> |
| <div class="block">Executes a selecting query, returning a list of persistent objects or |
| data rows.</div> |
| </li> |
| </ul> |
| <a id="select(org.apache.cayenne.query.Select)"> |
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| <h4>select</h4> |
| <pre class="methodSignature"><T> <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util" class="externalLink">List</a><T> select​(<a href="query/Select.html" title="interface in org.apache.cayenne.query">Select</a><T> query)</pre> |
| <div class="block">Executes a selecting query, returning a list of persistent objects or |
| data rows.</div> |
| <dl> |
| <dt><span class="simpleTagLabel">Since:</span></dt> |
| <dd>4.0</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="selectOne(org.apache.cayenne.query.Select)"> |
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| </a> |
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| <h4>selectOne</h4> |
| <pre class="methodSignature"><T> T selectOne​(<a href="query/Select.html" title="interface in org.apache.cayenne.query">Select</a><T> query)</pre> |
| <div class="block">Executes a selecting query, returning either NULL if query matched no |
| objects, or a single object. If query matches more than one object, |
| <a href="CayenneRuntimeException.html" title="class in org.apache.cayenne"><code>CayenneRuntimeException</code></a> is thrown.</div> |
| <dl> |
| <dt><span class="simpleTagLabel">Since:</span></dt> |
| <dd>4.0</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="selectFirst(org.apache.cayenne.query.Select)"> |
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| </a> |
| <ul class="blockList"> |
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| <h4>selectFirst</h4> |
| <pre class="methodSignature"><T> T selectFirst​(<a href="query/Select.html" title="interface in org.apache.cayenne.query">Select</a><T> query)</pre> |
| <div class="block">Selects a single object using provided query. The query itself can |
| match any number of objects, but will return only the first one. It |
| returns null if no objects were matched. |
| <p> |
| If it matched more than one object, the first object from the list is |
| returned. This makes 'selectFirst' different from |
| <a href="#selectOne(org.apache.cayenne.query.Select)"><code>selectOne(Select)</code></a>, which would throw in this situation. |
| 'selectFirst' is useful e.g. when the query is ordered and we only want |
| to see the first object (e.g. "most recent news article"), etc. |
| <p> |
| Selecting the first object via "Select.selectFirst(ObjectContext)" |
| is more comprehensible than selecting via "ObjectContext.selectFirst(Select)", |
| because implementations of "Select" set fetch size limit to one.</div> |
| <dl> |
| <dt><span class="simpleTagLabel">Since:</span></dt> |
| <dd>4.0</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="iterate(org.apache.cayenne.query.Select,org.apache.cayenne.ResultIteratorCallback)"> |
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| <h4>iterate</h4> |
| <pre class="methodSignature"><T> void iterate​(<a href="query/Select.html" title="interface in org.apache.cayenne.query">Select</a><T> query, |
| <a href="ResultIteratorCallback.html" title="interface in org.apache.cayenne">ResultIteratorCallback</a><T> callback)</pre> |
| <div class="block">Creates a ResultIterator based on the provided query and passes it to a |
| callback for processing. The caller does not need to worry about closing |
| the iterator. This method takes care of it.</div> |
| <dl> |
| <dt><span class="simpleTagLabel">Since:</span></dt> |
| <dd>4.0</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="iterator(org.apache.cayenne.query.Select)"> |
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| <h4>iterator</h4> |
| <pre class="methodSignature"><T> <a href="ResultIterator.html" title="interface in org.apache.cayenne">ResultIterator</a><T> iterator​(<a href="query/Select.html" title="interface in org.apache.cayenne.query">Select</a><T> query)</pre> |
| <div class="block">Creates a ResultIterator based on the provided query. It is usually |
| backed by an open result set and is useful for processing of large data |
| sets, preserving a constant memory footprint. The caller must wrap |
| iteration in try/finally (or try-with-resources for Java 1.7 and higher) and |
| close the ResultIterator explicitly. |
| Or use <a href="#iterate(org.apache.cayenne.query.Select,org.apache.cayenne.ResultIteratorCallback)"><code>iterate(Select, ResultIteratorCallback)</code></a> as an alternative.</div> |
| <dl> |
| <dt><span class="simpleTagLabel">Since:</span></dt> |
| <dd>4.0</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="batchIterator(org.apache.cayenne.query.Select,int)"> |
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| </a> |
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| <li class="blockList"> |
| <h4>batchIterator</h4> |
| <pre class="methodSignature"><T> <a href="ResultBatchIterator.html" title="class in org.apache.cayenne">ResultBatchIterator</a><T> batchIterator​(<a href="query/Select.html" title="interface in org.apache.cayenne.query">Select</a><T> query, |
| int size)</pre> |
| <div class="block">Creates a ResultBatchIterator based on the provided query and batch size. It is usually |
| backed by an open result set and is useful for processing of large data |
| sets, preserving a constant memory footprint. The caller must wrap |
| iteration in try/finally (or try-with-resources for Java 1.7 and higher) and |
| close the ResultBatchIterator explicitly.</div> |
| <dl> |
| <dt><span class="simpleTagLabel">Since:</span></dt> |
| <dd>4.0</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="performGenericQuery(org.apache.cayenne.query.Query)"> |
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| <h4>performGenericQuery</h4> |
| <pre class="methodSignature"><a href="QueryResponse.html" title="interface in org.apache.cayenne">QueryResponse</a> performGenericQuery​(<a href="query/Query.html" title="interface in org.apache.cayenne.query">Query</a> query)</pre> |
| <div class="block">Executes any kind of query providing the result in a form of |
| QueryResponse.</div> |
| </li> |
| </ul> |
| <a id="getGraphManager()"> |
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| </a> |
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| <h4>getGraphManager</h4> |
| <pre class="methodSignature"><a href="graph/GraphManager.html" title="interface in org.apache.cayenne.graph">GraphManager</a> getGraphManager()</pre> |
| <div class="block">Returns GraphManager that manages object graph associated with this |
| context.</div> |
| </li> |
| </ul> |
| <a id="getChannel()"> |
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| <h4>getChannel</h4> |
| <pre class="methodSignature"><a href="DataChannel.html" title="interface in org.apache.cayenne">DataChannel</a> getChannel()</pre> |
| <div class="block">Returns an DataChannel used by this context.</div> |
| </li> |
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| <a id="hasChanges()"> |
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| <h4>hasChanges</h4> |
| <pre class="methodSignature">boolean hasChanges()</pre> |
| <div class="block">Returns <code>true</code> if there are any modified, deleted or new |
| objects registered with this ObjectContext, <code>false</code> otherwise.</div> |
| <dl> |
| <dt><span class="simpleTagLabel">Since:</span></dt> |
| <dd>3.0</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="invalidateObjects(java.util.Collection)"> |
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| <h4>invalidateObjects</h4> |
| <pre class="methodSignature">void invalidateObjects​(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util" class="externalLink">Collection</a><?> objects)</pre> |
| <div class="block">Invalidates a Collection of persistent objects. This operation only |
| applies to the objects already committed to the database and does nothing |
| to the NEW objects. It would remove each object's snapshot from caches |
| and change object's state to HOLLOW. On the next access to this object, |
| the object will be refetched.</div> |
| </li> |
| </ul> |
| <a id="invalidateObjects(java.lang.Object[])"> |
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| </a><a id="invalidateObjects(T...)"> |
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| <h4>invalidateObjects</h4> |
| <pre class="methodSignature"><T> void invalidateObjects​(T... objects)</pre> |
| <div class="block">Invalidates one or more persistent objects. Same as |
| <a href="#invalidateObjects(java.util.Collection)"><code>invalidateObjects(Collection)</code></a> only with a vararg argument list |
| for easier invalidation of individual objects. If no arguments are passed |
| to this method, it does nothing.</div> |
| <dl> |
| <dt><span class="simpleTagLabel">Since:</span></dt> |
| <dd>3.1</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="getUserProperty(java.lang.String)"> |
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| <h4>getUserProperty</h4> |
| <pre class="methodSignature"><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a> getUserProperty​(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a> key)</pre> |
| <div class="block">Returns a user-defined property previously set via 'setUserProperty'. |
| Concurrent access to properties does not require any special |
| synchronization</div> |
| <dl> |
| <dt><span class="simpleTagLabel">Since:</span></dt> |
| <dd>3.0</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="setUserProperty(java.lang.String,java.lang.Object)"> |
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| <h4>setUserProperty</h4> |
| <pre class="methodSignature">void setUserProperty​(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a> key, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a> value)</pre> |
| <div class="block">Sets a user-defined property. Concurrent access to properties does not |
| require any special synchronization</div> |
| <dl> |
| <dt><span class="simpleTagLabel">Since:</span></dt> |
| <dd>3.0</dd> |
| </dl> |
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