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| <div class="subTitle">org.apache.beam.sdk.io.gcp.datastore</div> |
| <h2 title="Class DatastoreV1.Read" class="title">Class DatastoreV1.Read</h2> |
| </div> |
| <div class="contentContainer"> |
| <ul class="inheritance"> |
| <li>java.lang.Object</li> |
| <li> |
| <ul class="inheritance"> |
| <li><a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms">org.apache.beam.sdk.transforms.PTransform</a><<a href="../../../../../../../org/apache/beam/sdk/values/PBegin.html" title="class in org.apache.beam.sdk.values">PBegin</a>,<a href="../../../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values">PCollection</a><com.google.datastore.v1.Entity>></li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.beam.sdk.io.gcp.datastore.DatastoreV1.Read</li> |
| </ul> |
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| </ul> |
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| </ul> |
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| <dt>All Implemented Interfaces:</dt> |
| <dd>java.io.Serializable, <a href="../../../../../../../org/apache/beam/sdk/transforms/display/HasDisplayData.html" title="interface in org.apache.beam.sdk.transforms.display">HasDisplayData</a></dd> |
| </dl> |
| <dl> |
| <dt>Enclosing class:</dt> |
| <dd><a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.html" title="class in org.apache.beam.sdk.io.gcp.datastore">DatastoreV1</a></dd> |
| </dl> |
| <hr> |
| <br> |
| <pre>public abstract static class <span class="typeNameLabel">DatastoreV1.Read</span> |
| extends <a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms">PTransform</a><<a href="../../../../../../../org/apache/beam/sdk/values/PBegin.html" title="class in org.apache.beam.sdk.values">PBegin</a>,<a href="../../../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values">PCollection</a><com.google.datastore.v1.Entity>></pre> |
| <div class="block">A <a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms"><code>PTransform</code></a> that reads the result rows of a Cloud Datastore query as <code>Entity</code> |
| objects.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreIO.html" title="class in org.apache.beam.sdk.io.gcp.datastore"><code>DatastoreIO</code></a>, |
| <a href="../../../../../../../serialized-form.html#org.apache.beam.sdk.io.gcp.datastore.DatastoreV1.Read">Serialized Form</a></dd> |
| </dl> |
| </li> |
| </ul> |
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| <div class="summary"> |
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| <!-- =========== FIELD SUMMARY =========== --> |
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| <h3>Field Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Field Summary table, listing fields, and an explanation"> |
| <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 int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html#NUM_QUERY_SPLITS_MAX">NUM_QUERY_SPLITS_MAX</a></span></code> |
| <div class="block">An upper bound on the number of splits for a query.</div> |
| </td> |
| </tr> |
| </table> |
| <ul class="blockList"> |
| <li class="blockList"><a name="fields.inherited.from.class.org.apache.beam.sdk.transforms.PTransform"> |
| <!-- --> |
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| <h3>Fields inherited from class org.apache.beam.sdk.transforms.<a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms">PTransform</a></h3> |
| <code><a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html#name">name</a></code></li> |
| </ul> |
| </li> |
| </ul> |
| <!-- ======== CONSTRUCTOR SUMMARY ======== --> |
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| <h3>Constructor Summary</h3> |
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| <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/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html#Read--">Read</a></span>()</code> </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| <!-- ========== METHOD SUMMARY =========== --> |
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| <li class="blockList"><a name="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="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract 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><a href="../../../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values">PCollection</a><com.google.datastore.v1.Entity></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html#expand-org.apache.beam.sdk.values.PBegin-">expand</a></span>(<a href="../../../../../../../org/apache/beam/sdk/values/PBegin.html" title="class in org.apache.beam.sdk.values">PBegin</a> input)</code> |
| <div class="block">Override this method to specify how this <code>PTransform</code> should be expanded on the given |
| <code>InputT</code>.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>abstract <a href="../../../../../../../org/apache/beam/sdk/options/ValueProvider.html" title="interface in org.apache.beam.sdk.options">ValueProvider</a><java.lang.String></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html#getLiteralGqlQuery--">getLiteralGqlQuery</a></span>()</code> </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>abstract java.lang.String</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html#getLocalhost--">getLocalhost</a></span>()</code> </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>abstract <a href="../../../../../../../org/apache/beam/sdk/options/ValueProvider.html" title="interface in org.apache.beam.sdk.options">ValueProvider</a><java.lang.String></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html#getNamespace--">getNamespace</a></span>()</code> </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>abstract int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html#getNumQuerySplits--">getNumQuerySplits</a></span>()</code> </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>abstract <a href="../../../../../../../org/apache/beam/sdk/options/ValueProvider.html" title="interface in org.apache.beam.sdk.options">ValueProvider</a><java.lang.String></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html#getProjectId--">getProjectId</a></span>()</code> </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>abstract com.google.datastore.v1.Query</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html#getQuery--">getQuery</a></span>()</code> </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html#populateDisplayData-org.apache.beam.sdk.transforms.display.DisplayData.Builder-">populateDisplayData</a></span>(<a href="../../../../../../../org/apache/beam/sdk/transforms/display/DisplayData.Builder.html" title="interface in org.apache.beam.sdk.transforms.display">DisplayData.Builder</a> builder)</code> |
| <div class="block">Register display data for the given transform or component.</div> |
| </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>abstract java.lang.String</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html#toString--">toString</a></span>()</code> </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html" title="class in org.apache.beam.sdk.io.gcp.datastore">DatastoreV1.Read</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html#withLiteralGqlQuery-java.lang.String-">withLiteralGqlQuery</a></span>(java.lang.String gqlQuery)</code> |
| <div class="block">Returns a new <a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html" title="class in org.apache.beam.sdk.io.gcp.datastore"><code>DatastoreV1.Read</code></a> that reads the results of the specified GQL query.</div> |
| </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html" title="class in org.apache.beam.sdk.io.gcp.datastore">DatastoreV1.Read</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html#withLiteralGqlQuery-org.apache.beam.sdk.options.ValueProvider-">withLiteralGqlQuery</a></span>(<a href="../../../../../../../org/apache/beam/sdk/options/ValueProvider.html" title="interface in org.apache.beam.sdk.options">ValueProvider</a><java.lang.String> gqlQuery)</code> |
| <div class="block">Same as <a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html#withLiteralGqlQuery-java.lang.String-"><code>withLiteralGqlQuery(String)</code></a> but with a <a href="../../../../../../../org/apache/beam/sdk/options/ValueProvider.html" title="interface in org.apache.beam.sdk.options"><code>ValueProvider</code></a>.</div> |
| </td> |
| </tr> |
| <tr id="i11" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html" title="class in org.apache.beam.sdk.io.gcp.datastore">DatastoreV1.Read</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html#withLocalhost-java.lang.String-">withLocalhost</a></span>(java.lang.String localhost)</code> |
| <div class="block">Returns a new <a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html" title="class in org.apache.beam.sdk.io.gcp.datastore"><code>DatastoreV1.Read</code></a> that reads from a Datastore Emulator running at the |
| given localhost address.</div> |
| </td> |
| </tr> |
| <tr id="i12" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html" title="class in org.apache.beam.sdk.io.gcp.datastore">DatastoreV1.Read</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html#withNamespace-java.lang.String-">withNamespace</a></span>(java.lang.String namespace)</code> |
| <div class="block">Returns a new <a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html" title="class in org.apache.beam.sdk.io.gcp.datastore"><code>DatastoreV1.Read</code></a> that reads from the given namespace.</div> |
| </td> |
| </tr> |
| <tr id="i13" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html" title="class in org.apache.beam.sdk.io.gcp.datastore">DatastoreV1.Read</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html#withNamespace-org.apache.beam.sdk.options.ValueProvider-">withNamespace</a></span>(<a href="../../../../../../../org/apache/beam/sdk/options/ValueProvider.html" title="interface in org.apache.beam.sdk.options">ValueProvider</a><java.lang.String> namespace)</code> |
| <div class="block">Same as <a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html#withNamespace-java.lang.String-"><code>withNamespace(String)</code></a> but with a <a href="../../../../../../../org/apache/beam/sdk/options/ValueProvider.html" title="interface in org.apache.beam.sdk.options"><code>ValueProvider</code></a>.</div> |
| </td> |
| </tr> |
| <tr id="i14" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html" title="class in org.apache.beam.sdk.io.gcp.datastore">DatastoreV1.Read</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html#withNumQuerySplits-int-">withNumQuerySplits</a></span>(int numQuerySplits)</code> |
| <div class="block">Returns a new <a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html" title="class in org.apache.beam.sdk.io.gcp.datastore"><code>DatastoreV1.Read</code></a> that reads by splitting the given <code>query</code> into |
| <code>numQuerySplits</code>.</div> |
| </td> |
| </tr> |
| <tr id="i15" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html" title="class in org.apache.beam.sdk.io.gcp.datastore">DatastoreV1.Read</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html#withProjectId-java.lang.String-">withProjectId</a></span>(java.lang.String projectId)</code> |
| <div class="block">Returns a new <a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html" title="class in org.apache.beam.sdk.io.gcp.datastore"><code>DatastoreV1.Read</code></a> that reads from the Cloud Datastore for the specified |
| project.</div> |
| </td> |
| </tr> |
| <tr id="i16" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html" title="class in org.apache.beam.sdk.io.gcp.datastore">DatastoreV1.Read</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html#withProjectId-org.apache.beam.sdk.options.ValueProvider-">withProjectId</a></span>(<a href="../../../../../../../org/apache/beam/sdk/options/ValueProvider.html" title="interface in org.apache.beam.sdk.options">ValueProvider</a><java.lang.String> projectId)</code> |
| <div class="block">Same as <a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html#withProjectId-java.lang.String-"><code>withProjectId(String)</code></a> but with a <a href="../../../../../../../org/apache/beam/sdk/options/ValueProvider.html" title="interface in org.apache.beam.sdk.options"><code>ValueProvider</code></a>.</div> |
| </td> |
| </tr> |
| <tr id="i17" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html" title="class in org.apache.beam.sdk.io.gcp.datastore">DatastoreV1.Read</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html#withQuery-com.google.datastore.v1.Query-">withQuery</a></span>(com.google.datastore.v1.Query query)</code> |
| <div class="block">Returns a new <a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html" title="class in org.apache.beam.sdk.io.gcp.datastore"><code>DatastoreV1.Read</code></a> that reads the results of the specified query.</div> |
| </td> |
| </tr> |
| </table> |
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| <li class="blockList"><a name="methods.inherited.from.class.org.apache.beam.sdk.transforms.PTransform"> |
| <!-- --> |
| </a> |
| <h3>Methods inherited from class org.apache.beam.sdk.transforms.<a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms">PTransform</a></h3> |
| <code><a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html#compose-org.apache.beam.sdk.transforms.SerializableFunction-">compose</a>, <a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html#compose-java.lang.String-org.apache.beam.sdk.transforms.SerializableFunction-">compose</a>, <a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html#getAdditionalInputs--">getAdditionalInputs</a>, <a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html#getDefaultOutputCoder--">getDefaultOutputCoder</a>, <a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html#getDefaultOutputCoder-InputT-">getDefaultOutputCoder</a>, <a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html#getDefaultOutputCoder-InputT-org.apache.beam.sdk.values.PCollection-">getDefaultOutputCoder</a>, <a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html#getKindString--">getKindString</a>, <a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html#getName--">getName</a>, <a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html#validate-org.apache.beam.sdk.options.PipelineOptions-">validate</a></code></li> |
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| <h3>Methods inherited from class java.lang.Object</h3> |
| <code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait</code></li> |
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| <h4>NUM_QUERY_SPLITS_MAX</h4> |
| <pre>public static final int NUM_QUERY_SPLITS_MAX</pre> |
| <div class="block">An upper bound on the number of splits for a query.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../../constant-values.html#org.apache.beam.sdk.io.gcp.datastore.DatastoreV1.Read.NUM_QUERY_SPLITS_MAX">Constant Field Values</a></dd> |
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| <h4>Read</h4> |
| <pre>public Read()</pre> |
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| public abstract <a href="../../../../../../../org/apache/beam/sdk/options/ValueProvider.html" title="interface in org.apache.beam.sdk.options">ValueProvider</a><java.lang.String> getProjectId()</pre> |
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| public abstract com.google.datastore.v1.Query getQuery()</pre> |
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| <pre>public abstract int getNumQuerySplits()</pre> |
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| <pre>public abstract java.lang.String toString()</pre> |
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| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html#toString--">toString</a></code> in class <code><a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms">PTransform</a><<a href="../../../../../../../org/apache/beam/sdk/values/PBegin.html" title="class in org.apache.beam.sdk.values">PBegin</a>,<a href="../../../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values">PCollection</a><com.google.datastore.v1.Entity>></code></dd> |
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| <h4>withProjectId</h4> |
| <pre>public <a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html" title="class in org.apache.beam.sdk.io.gcp.datastore">DatastoreV1.Read</a> withProjectId(java.lang.String projectId)</pre> |
| <div class="block">Returns a new <a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html" title="class in org.apache.beam.sdk.io.gcp.datastore"><code>DatastoreV1.Read</code></a> that reads from the Cloud Datastore for the specified |
| project.</div> |
| </li> |
| </ul> |
| <a name="withProjectId-org.apache.beam.sdk.options.ValueProvider-"> |
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| <h4>withProjectId</h4> |
| <pre>public <a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html" title="class in org.apache.beam.sdk.io.gcp.datastore">DatastoreV1.Read</a> withProjectId(<a href="../../../../../../../org/apache/beam/sdk/options/ValueProvider.html" title="interface in org.apache.beam.sdk.options">ValueProvider</a><java.lang.String> projectId)</pre> |
| <div class="block">Same as <a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html#withProjectId-java.lang.String-"><code>withProjectId(String)</code></a> but with a <a href="../../../../../../../org/apache/beam/sdk/options/ValueProvider.html" title="interface in org.apache.beam.sdk.options"><code>ValueProvider</code></a>.</div> |
| </li> |
| </ul> |
| <a name="withQuery-com.google.datastore.v1.Query-"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>withQuery</h4> |
| <pre>public <a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html" title="class in org.apache.beam.sdk.io.gcp.datastore">DatastoreV1.Read</a> withQuery(com.google.datastore.v1.Query query)</pre> |
| <div class="block">Returns a new <a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html" title="class in org.apache.beam.sdk.io.gcp.datastore"><code>DatastoreV1.Read</code></a> that reads the results of the specified query. |
| |
| <p><b>Note:</b> Normally, <code>DatastoreIO</code> will read from Cloud Datastore in parallel |
| across many workers. However, when the <code>Query</code> is configured with a limit using <code>Query.Builder#setLimit</code>, then all results will be read by a single worker in order to ensure |
| correct results.</div> |
| </li> |
| </ul> |
| <a name="withLiteralGqlQuery-java.lang.String-"> |
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| <h4>withLiteralGqlQuery</h4> |
| <pre><a href="../../../../../../../org/apache/beam/sdk/annotations/Experimental.html" title="annotation in org.apache.beam.sdk.annotations">@Experimental</a>(<a href="../../../../../../../org/apache/beam/sdk/annotations/Experimental.html#value--">value</a>=<a href="../../../../../../../org/apache/beam/sdk/annotations/Experimental.Kind.html#SOURCE_SINK">SOURCE_SINK</a>) |
| public <a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html" title="class in org.apache.beam.sdk.io.gcp.datastore">DatastoreV1.Read</a> withLiteralGqlQuery(java.lang.String gqlQuery)</pre> |
| <div class="block">Returns a new <a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html" title="class in org.apache.beam.sdk.io.gcp.datastore"><code>DatastoreV1.Read</code></a> that reads the results of the specified GQL query. See |
| <a href="https://cloud.google.com/datastore/docs/reference/gql_reference">GQL Reference </a> |
| to know more about GQL grammar. |
| |
| <p><b><i>Note:</i></b> This query is executed with literals allowed, so the users should |
| ensure that the query is originated from trusted sources to avoid any security |
| vulnerabilities via SQL Injection. |
| |
| <p><b><i>Experimental</i></b>: Cloud Datastore does not a provide a clean way to translate a |
| gql query string to <code>Query</code>, so we end up making a query to the service for translation |
| but this may read the actual data, although it will be a small amount. It needs more |
| validation through production use cases before marking it as stable.</div> |
| </li> |
| </ul> |
| <a name="withLiteralGqlQuery-org.apache.beam.sdk.options.ValueProvider-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>withLiteralGqlQuery</h4> |
| <pre><a href="../../../../../../../org/apache/beam/sdk/annotations/Experimental.html" title="annotation in org.apache.beam.sdk.annotations">@Experimental</a>(<a href="../../../../../../../org/apache/beam/sdk/annotations/Experimental.html#value--">value</a>=<a href="../../../../../../../org/apache/beam/sdk/annotations/Experimental.Kind.html#SOURCE_SINK">SOURCE_SINK</a>) |
| public <a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html" title="class in org.apache.beam.sdk.io.gcp.datastore">DatastoreV1.Read</a> withLiteralGqlQuery(<a href="../../../../../../../org/apache/beam/sdk/options/ValueProvider.html" title="interface in org.apache.beam.sdk.options">ValueProvider</a><java.lang.String> gqlQuery)</pre> |
| <div class="block">Same as <a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html#withLiteralGqlQuery-java.lang.String-"><code>withLiteralGqlQuery(String)</code></a> but with a <a href="../../../../../../../org/apache/beam/sdk/options/ValueProvider.html" title="interface in org.apache.beam.sdk.options"><code>ValueProvider</code></a>.</div> |
| </li> |
| </ul> |
| <a name="withNamespace-java.lang.String-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>withNamespace</h4> |
| <pre>public <a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html" title="class in org.apache.beam.sdk.io.gcp.datastore">DatastoreV1.Read</a> withNamespace(java.lang.String namespace)</pre> |
| <div class="block">Returns a new <a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html" title="class in org.apache.beam.sdk.io.gcp.datastore"><code>DatastoreV1.Read</code></a> that reads from the given namespace.</div> |
| </li> |
| </ul> |
| <a name="withNamespace-org.apache.beam.sdk.options.ValueProvider-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>withNamespace</h4> |
| <pre>public <a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html" title="class in org.apache.beam.sdk.io.gcp.datastore">DatastoreV1.Read</a> withNamespace(<a href="../../../../../../../org/apache/beam/sdk/options/ValueProvider.html" title="interface in org.apache.beam.sdk.options">ValueProvider</a><java.lang.String> namespace)</pre> |
| <div class="block">Same as <a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html#withNamespace-java.lang.String-"><code>withNamespace(String)</code></a> but with a <a href="../../../../../../../org/apache/beam/sdk/options/ValueProvider.html" title="interface in org.apache.beam.sdk.options"><code>ValueProvider</code></a>.</div> |
| </li> |
| </ul> |
| <a name="withNumQuerySplits-int-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>withNumQuerySplits</h4> |
| <pre>public <a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html" title="class in org.apache.beam.sdk.io.gcp.datastore">DatastoreV1.Read</a> withNumQuerySplits(int numQuerySplits)</pre> |
| <div class="block">Returns a new <a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html" title="class in org.apache.beam.sdk.io.gcp.datastore"><code>DatastoreV1.Read</code></a> that reads by splitting the given <code>query</code> into |
| <code>numQuerySplits</code>. |
| |
| <p>The semantics for the query splitting is defined below: |
| |
| <ul> |
| <li>Any value less than or equal to 0 will be ignored, and the number of splits will be |
| chosen dynamically at runtime based on the query data size. |
| <li>Any value greater than <a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html#NUM_QUERY_SPLITS_MAX"><code>NUM_QUERY_SPLITS_MAX</code></a> will be capped at <code>NUM_QUERY_SPLITS_MAX</code>. |
| <li>If the <code>query</code> has a user limit set, then <code>numQuerySplits</code> will be ignored |
| and no split will be performed. |
| <li>Under certain cases Cloud Datastore is unable to split query to the requested number of |
| splits. In such cases we just use whatever the Cloud Datastore returns. |
| </ul></div> |
| </li> |
| </ul> |
| <a name="withLocalhost-java.lang.String-"> |
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| </a> |
| <ul class="blockList"> |
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| <h4>withLocalhost</h4> |
| <pre>public <a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html" title="class in org.apache.beam.sdk.io.gcp.datastore">DatastoreV1.Read</a> withLocalhost(java.lang.String localhost)</pre> |
| <div class="block">Returns a new <a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html" title="class in org.apache.beam.sdk.io.gcp.datastore"><code>DatastoreV1.Read</code></a> that reads from a Datastore Emulator running at the |
| given localhost address.</div> |
| </li> |
| </ul> |
| <a name="expand-org.apache.beam.sdk.values.PBegin-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>expand</h4> |
| <pre>public <a href="../../../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values">PCollection</a><com.google.datastore.v1.Entity> expand(<a href="../../../../../../../org/apache/beam/sdk/values/PBegin.html" title="class in org.apache.beam.sdk.values">PBegin</a> input)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html#expand-InputT-">PTransform</a></code></span></div> |
| <div class="block">Override this method to specify how this <code>PTransform</code> should be expanded on the given |
| <code>InputT</code>. |
| |
| <p>NOTE: This method should not be called directly. Instead apply the <code>PTransform</code> should |
| be applied to the <code>InputT</code> using the <code>apply</code> method. |
| |
| <p>Composite transforms, which are defined in terms of other transforms, should return the |
| output of one of the composed transforms. Non-composite transforms, which do not apply any |
| transforms internally, should return a new unbound output and register evaluators (via |
| backend-specific registration methods).</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html#expand-InputT-">expand</a></code> in class <code><a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms">PTransform</a><<a href="../../../../../../../org/apache/beam/sdk/values/PBegin.html" title="class in org.apache.beam.sdk.values">PBegin</a>,<a href="../../../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values">PCollection</a><com.google.datastore.v1.Entity>></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="populateDisplayData-org.apache.beam.sdk.transforms.display.DisplayData.Builder-"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>populateDisplayData</h4> |
| <pre>public void populateDisplayData(<a href="../../../../../../../org/apache/beam/sdk/transforms/display/DisplayData.Builder.html" title="interface in org.apache.beam.sdk.transforms.display">DisplayData.Builder</a> builder)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html#populateDisplayData-org.apache.beam.sdk.transforms.display.DisplayData.Builder-">PTransform</a></code></span></div> |
| <div class="block">Register display data for the given transform or component. |
| |
| <p><code>populateDisplayData(DisplayData.Builder)</code> is invoked by Pipeline runners to collect |
| display data via <a href="../../../../../../../org/apache/beam/sdk/transforms/display/DisplayData.html#from-org.apache.beam.sdk.transforms.display.HasDisplayData-"><code>DisplayData.from(HasDisplayData)</code></a>. Implementations may call <code>super.populateDisplayData(builder)</code> in order to register display data in the current namespace, |
| but should otherwise use <code>subcomponent.populateDisplayData(builder)</code> to use the namespace |
| of the subcomponent. |
| |
| <p>By default, does not register any display data. Implementors may override this method to |
| provide their own display data.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../../org/apache/beam/sdk/transforms/display/HasDisplayData.html#populateDisplayData-org.apache.beam.sdk.transforms.display.DisplayData.Builder-">populateDisplayData</a></code> in interface <code><a href="../../../../../../../org/apache/beam/sdk/transforms/display/HasDisplayData.html" title="interface in org.apache.beam.sdk.transforms.display">HasDisplayData</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html#populateDisplayData-org.apache.beam.sdk.transforms.display.DisplayData.Builder-">populateDisplayData</a></code> in class <code><a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms">PTransform</a><<a href="../../../../../../../org/apache/beam/sdk/values/PBegin.html" title="class in org.apache.beam.sdk.values">PBegin</a>,<a href="../../../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values">PCollection</a><com.google.datastore.v1.Entity>></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>builder</code> - The builder to populate with display data.</dd> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../../org/apache/beam/sdk/transforms/display/HasDisplayData.html" title="interface in org.apache.beam.sdk.transforms.display"><code>HasDisplayData</code></a></dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
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