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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>&lt;<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>&lt;com.google.datastore.v1.Entity&gt;&gt;</li>
<li>
<ul class="inheritance">
<li>org.apache.beam.sdk.io.gcp.datastore.DatastoreV1.Read</li>
</ul>
</li>
</ul>
</li>
</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>
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<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>&lt;<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>&lt;com.google.datastore.v1.Entity&gt;&gt;</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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<!-- =========== 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">&nbsp;</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>
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<h3>Fields inherited from class&nbsp;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>, <a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html#resourceHints">resourceHints</a></code></li>
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<th class="colOne" scope="col">Constructor and Description</th>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html#Read--">Read</a></span>()</code>&nbsp;</td>
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<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd">&nbsp;</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>&lt;com.google.datastore.v1.Entity&gt;</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>&nbsp;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="https://static.javadoc.io/org.checkerframework/checker-qual/3.10.0/org/checkerframework/checker/nullness/qual/Nullable.html?is-external=true" title="class or interface in org.checkerframework.checker.nullness.qual">@Nullable</a> <a href="../../../../../../../org/apache/beam/sdk/options/ValueProvider.html" title="interface in org.apache.beam.sdk.options">ValueProvider</a>&lt;java.lang.String&gt;</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>&nbsp;</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>abstract <a href="https://static.javadoc.io/org.checkerframework/checker-qual/3.10.0/org/checkerframework/checker/nullness/qual/Nullable.html?is-external=true" title="class or interface in org.checkerframework.checker.nullness.qual">@Nullable</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#getLocalhost--">getLocalhost</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>abstract <a href="https://static.javadoc.io/org.checkerframework/checker-qual/3.10.0/org/checkerframework/checker/nullness/qual/Nullable.html?is-external=true" title="class or interface in org.checkerframework.checker.nullness.qual">@Nullable</a> <a href="../../../../../../../org/apache/beam/sdk/options/ValueProvider.html" title="interface in org.apache.beam.sdk.options">ValueProvider</a>&lt;java.lang.String&gt;</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>&nbsp;</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.Read.html#getNumEntities-org.apache.beam.sdk.options.PipelineOptions-java.lang.String-java.lang.String-">getNumEntities</a></span>(<a href="../../../../../../../org/apache/beam/sdk/options/PipelineOptions.html" title="interface in org.apache.beam.sdk.options">PipelineOptions</a>&nbsp;options,
java.lang.String&nbsp;ourKind,
<a href="https://static.javadoc.io/org.checkerframework/checker-qual/3.10.0/org/checkerframework/checker/nullness/qual/Nullable.html?is-external=true" title="class or interface in org.checkerframework.checker.nullness.qual">@Nullable</a> java.lang.String&nbsp;namespace)</code>
<div class="block">Returns Number of entities available for reading.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<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>&nbsp;</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>abstract <a href="https://static.javadoc.io/org.checkerframework/checker-qual/3.10.0/org/checkerframework/checker/nullness/qual/Nullable.html?is-external=true" title="class or interface in org.checkerframework.checker.nullness.qual">@Nullable</a> <a href="../../../../../../../org/apache/beam/sdk/options/ValueProvider.html" title="interface in org.apache.beam.sdk.options">ValueProvider</a>&lt;java.lang.String&gt;</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>&nbsp;</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>abstract <a href="https://static.javadoc.io/org.checkerframework/checker-qual/3.10.0/org/checkerframework/checker/nullness/qual/Nullable.html?is-external=true" title="class or interface in org.checkerframework.checker.nullness.qual">@Nullable</a> 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>&nbsp;</td>
</tr>
<tr id="i8" class="altColor">
<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>&nbsp;builder)</code>
<div class="block">Register display data for the given transform or component.</div>
</td>
</tr>
<tr id="i9" class="rowColor">
<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>&nbsp;</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-java.lang.String-">withLiteralGqlQuery</a></span>(java.lang.String&nbsp;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="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#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>&lt;java.lang.String&gt;&nbsp;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="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#withLocalhost-java.lang.String-">withLocalhost</a></span>(java.lang.String&nbsp;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="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-java.lang.String-">withNamespace</a></span>(java.lang.String&nbsp;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="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#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>&lt;java.lang.String&gt;&nbsp;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="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#withNumQuerySplits-int-">withNumQuerySplits</a></span>(int&nbsp;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="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-java.lang.String-">withProjectId</a></span>(java.lang.String&nbsp;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="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#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>&lt;java.lang.String&gt;&nbsp;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="i18" 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#withQuery-com.google.datastore.v1.Query-">withQuery</a></span>(com.google.datastore.v1.Query&nbsp;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>
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<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#getResourceHints--">getResourceHints</a>, <a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html#setResourceHints-org.apache.beam.sdk.transforms.resourcehints.ResourceHints-">setResourceHints</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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<pre>public static final&nbsp;int NUM_QUERY_SPLITS_MAX</pre>
<div class="block">An upper bound on the number of splits for a query.</div>
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<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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<pre>public&nbsp;Read()</pre>
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<pre>public abstract&nbsp;<a href="https://static.javadoc.io/org.checkerframework/checker-qual/3.10.0/org/checkerframework/checker/nullness/qual/Nullable.html?is-external=true" title="class or interface in org.checkerframework.checker.nullness.qual">@Nullable</a> <a href="../../../../../../../org/apache/beam/sdk/options/ValueProvider.html" title="interface in org.apache.beam.sdk.options">ValueProvider</a>&lt;java.lang.String&gt;&nbsp;getProjectId()</pre>
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<pre>public abstract&nbsp;<a href="https://static.javadoc.io/org.checkerframework/checker-qual/3.10.0/org/checkerframework/checker/nullness/qual/Nullable.html?is-external=true" title="class or interface in org.checkerframework.checker.nullness.qual">@Nullable</a> com.google.datastore.v1.Query&nbsp;getQuery()</pre>
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<pre>public abstract&nbsp;<a href="https://static.javadoc.io/org.checkerframework/checker-qual/3.10.0/org/checkerframework/checker/nullness/qual/Nullable.html?is-external=true" title="class or interface in org.checkerframework.checker.nullness.qual">@Nullable</a> <a href="../../../../../../../org/apache/beam/sdk/options/ValueProvider.html" title="interface in org.apache.beam.sdk.options">ValueProvider</a>&lt;java.lang.String&gt;&nbsp;getLiteralGqlQuery()</pre>
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<pre>public abstract&nbsp;<a href="https://static.javadoc.io/org.checkerframework/checker-qual/3.10.0/org/checkerframework/checker/nullness/qual/Nullable.html?is-external=true" title="class or interface in org.checkerframework.checker.nullness.qual">@Nullable</a> <a href="../../../../../../../org/apache/beam/sdk/options/ValueProvider.html" title="interface in org.apache.beam.sdk.options">ValueProvider</a>&lt;java.lang.String&gt;&nbsp;getNamespace()</pre>
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<pre>public abstract&nbsp;int&nbsp;getNumQuerySplits()</pre>
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<pre>public abstract&nbsp;<a href="https://static.javadoc.io/org.checkerframework/checker-qual/3.10.0/org/checkerframework/checker/nullness/qual/Nullable.html?is-external=true" title="class or interface in org.checkerframework.checker.nullness.qual">@Nullable</a> java.lang.String&nbsp;getLocalhost()</pre>
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<pre>public abstract&nbsp;java.lang.String&nbsp;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>&nbsp;in class&nbsp;<code><a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms">PTransform</a>&lt;<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>&lt;com.google.datastore.v1.Entity&gt;&gt;</code></dd>
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<pre>public&nbsp;<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>&nbsp;withProjectId(java.lang.String&nbsp;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>
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<pre>public&nbsp;<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>&nbsp;withProjectId(<a href="../../../../../../../org/apache/beam/sdk/options/ValueProvider.html" title="interface in org.apache.beam.sdk.options">ValueProvider</a>&lt;java.lang.String&gt;&nbsp;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>
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<pre>public&nbsp;<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>&nbsp;withQuery(com.google.datastore.v1.Query&nbsp;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>
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<pre>public&nbsp;<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>&nbsp;withLiteralGqlQuery(java.lang.String&nbsp;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>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>
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<pre>public&nbsp;<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>&nbsp;withLiteralGqlQuery(<a href="../../../../../../../org/apache/beam/sdk/options/ValueProvider.html" title="interface in org.apache.beam.sdk.options">ValueProvider</a>&lt;java.lang.String&gt;&nbsp;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>
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<pre>public&nbsp;<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>&nbsp;withNamespace(java.lang.String&nbsp;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>
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<pre>public&nbsp;<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>&nbsp;withNamespace(<a href="../../../../../../../org/apache/beam/sdk/options/ValueProvider.html" title="interface in org.apache.beam.sdk.options">ValueProvider</a>&lt;java.lang.String&gt;&nbsp;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>
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<pre>public&nbsp;<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>&nbsp;withNumQuerySplits(int&nbsp;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.
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<pre>public&nbsp;<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>&nbsp;withLocalhost(java.lang.String&nbsp;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>
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<pre>public&nbsp;long&nbsp;getNumEntities(<a href="../../../../../../../org/apache/beam/sdk/options/PipelineOptions.html" title="interface in org.apache.beam.sdk.options">PipelineOptions</a>&nbsp;options,
java.lang.String&nbsp;ourKind,
<a href="https://static.javadoc.io/org.checkerframework/checker-qual/3.10.0/org/checkerframework/checker/nullness/qual/Nullable.html?is-external=true" title="class or interface in org.checkerframework.checker.nullness.qual">@Nullable</a> java.lang.String&nbsp;namespace)</pre>
<div class="block">Returns Number of entities available for reading.</div>
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<pre>public&nbsp;<a href="../../../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values">PCollection</a>&lt;com.google.datastore.v1.Entity&gt;&nbsp;expand(<a href="../../../../../../../org/apache/beam/sdk/values/PBegin.html" title="class in org.apache.beam.sdk.values">PBegin</a>&nbsp;input)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<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>&nbsp;in class&nbsp;<code><a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms">PTransform</a>&lt;<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>&lt;com.google.datastore.v1.Entity&gt;&gt;</code></dd>
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<pre>public&nbsp;void&nbsp;populateDisplayData(<a href="../../../../../../../org/apache/beam/sdk/transforms/display/DisplayData.Builder.html" title="interface in org.apache.beam.sdk.transforms.display">DisplayData.Builder</a>&nbsp;builder)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<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>&nbsp;in interface&nbsp;<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>&nbsp;in class&nbsp;<code><a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms">PTransform</a>&lt;<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>&lt;com.google.datastore.v1.Entity&gt;&gt;</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>
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