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| <div class="subTitle">org.apache.beam.runners.spark.structuredstreaming.translation.helpers</div> |
| <h2 title="Class EncoderHelpers" class="title">Class EncoderHelpers</h2> |
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| <pre>public class <span class="typeNameLabel">EncoderHelpers</span> |
| extends java.lang.Object</pre> |
| <div class="block"><code>Encoders</code> utility class.</div> |
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| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/beam/runners/spark/structuredstreaming/translation/helpers/EncoderHelpers.Utils.html" title="class in org.apache.beam.runners.spark.structuredstreaming.translation.helpers">EncoderHelpers.Utils</a></span></code> |
| <div class="block">Encoder / expression utils that are called from generated code.</div> |
| </td> |
| </tr> |
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| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/beam/runners/spark/structuredstreaming/translation/helpers/EncoderHelpers.html#EncoderHelpers--">EncoderHelpers</a></span>()</code> </td> |
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| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static 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> |
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| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>static <T> org.apache.spark.sql.Encoder<java.util.Collection<T>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/beam/runners/spark/structuredstreaming/translation/helpers/EncoderHelpers.html#collectionEncoder-org.apache.spark.sql.Encoder-">collectionEncoder</a></span>(org.apache.spark.sql.Encoder<T> enc)</code> |
| <div class="block">Creates a Spark <code>Encoder</code> of <code>ArrayType</code> for Java <code>Collection</code>s with nullable |
| elements.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>static <T> org.apache.spark.sql.Encoder<java.util.Collection<T>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/beam/runners/spark/structuredstreaming/translation/helpers/EncoderHelpers.html#collectionEncoder-org.apache.spark.sql.Encoder-boolean-">collectionEncoder</a></span>(org.apache.spark.sql.Encoder<T> enc, |
| boolean nullable)</code> |
| <div class="block">Creates a Spark <code>Encoder</code> of <code>ArrayType</code> for Java <code>Collection</code>s.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>static <T> org.apache.spark.sql.catalyst.expressions.Expression</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/beam/runners/spark/structuredstreaming/translation/helpers/EncoderHelpers.html#deserializeOneOf-org.apache.spark.sql.catalyst.expressions.Expression-java.util.List-">deserializeOneOf</a></span>(org.apache.spark.sql.catalyst.expressions.Expression in, |
| java.util.List<org.apache.spark.sql.Encoder<T>> encoders)</code> </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>static <T> org.apache.spark.sql.Encoder<T></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/beam/runners/spark/structuredstreaming/translation/helpers/EncoderHelpers.html#encoderFor-org.apache.beam.sdk.coders.Coder-">encoderFor</a></span>(<a href="../../../../../../../../org/apache/beam/sdk/coders/Coder.html" title="class in org.apache.beam.sdk.coders">Coder</a><T> coder)</code> |
| <div class="block">Creates a Spark <code>Encoder</code> for <code>T</code> of <code>BinaryType</code> |
| delegating to a Beam <a href="../../../../../../../../org/apache/beam/sdk/coders/Coder.html" title="class in org.apache.beam.sdk.coders"><code>Coder</code></a> underneath.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>static <T> org.apache.spark.sql.Encoder<T></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/beam/runners/spark/structuredstreaming/translation/helpers/EncoderHelpers.html#encoderOf-java.lang.Class-">encoderOf</a></span>(java.lang.Class<? super T> cls)</code> |
| <div class="block">Gets or creates a default <code>Encoder</code> for <code>T</code>.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>static <K,V> org.apache.spark.sql.Encoder<<a href="../../../../../../../../org/apache/beam/sdk/values/KV.html" title="class in org.apache.beam.sdk.values">KV</a><K,V>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/beam/runners/spark/structuredstreaming/translation/helpers/EncoderHelpers.html#kvEncoder-org.apache.spark.sql.Encoder-org.apache.spark.sql.Encoder-">kvEncoder</a></span>(org.apache.spark.sql.Encoder<K> key, |
| org.apache.spark.sql.Encoder<V> value)</code> |
| <div class="block">Creates a Spark <code>Encoder</code> for <a href="../../../../../../../../org/apache/beam/sdk/values/KV.html" title="class in org.apache.beam.sdk.values"><code>KV</code></a> of <code>StructType</code> with fields <code>key</code> |
| and <code>value</code>.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>static <MapT extends java.util.Map<K,V>,K,V><br>org.apache.spark.sql.Encoder<MapT></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/beam/runners/spark/structuredstreaming/translation/helpers/EncoderHelpers.html#mapEncoder-org.apache.spark.sql.Encoder-org.apache.spark.sql.Encoder-java.lang.Class-">mapEncoder</a></span>(org.apache.spark.sql.Encoder<K> key, |
| org.apache.spark.sql.Encoder<V> value, |
| java.lang.Class<MapT> cls)</code> |
| <div class="block">Creates a Spark <code>Encoder</code> of <code>MapType</code> that deserializes to <code>MapT</code>.</div> |
| </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>static <T1,T2> org.apache.spark.sql.Encoder<org.apache.spark.util.MutablePair<T1,T2>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/beam/runners/spark/structuredstreaming/translation/helpers/EncoderHelpers.html#mutablePairEncoder-org.apache.spark.sql.Encoder-org.apache.spark.sql.Encoder-">mutablePairEncoder</a></span>(org.apache.spark.sql.Encoder<T1> enc1, |
| org.apache.spark.sql.Encoder<T2> enc2)</code> |
| <div class="block">Creates a Spark <code>Encoder</code> for Spark's <code>MutablePair</code> of <code>StructType</code> with |
| fields `<code>_1</code>` and `<code>_2</code>`.</div> |
| </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>static <T> org.apache.spark.sql.Encoder<scala.Tuple2<java.lang.Integer,T>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/beam/runners/spark/structuredstreaming/translation/helpers/EncoderHelpers.html#oneOfEncoder-java.util.List-">oneOfEncoder</a></span>(java.util.List<org.apache.spark.sql.Encoder<T>> encoders)</code> |
| <div class="block">Creates a one-of Spark <code>Encoder</code> of <code>StructType</code> where each alternative is |
| represented as colum / field named by its index with a separate <code>Encoder</code> each.</div> |
| </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code>static <T> org.apache.spark.sql.catalyst.expressions.Expression</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/beam/runners/spark/structuredstreaming/translation/helpers/EncoderHelpers.html#serializeOneOf-org.apache.spark.sql.catalyst.expressions.Expression-java.util.List-">serializeOneOf</a></span>(org.apache.spark.sql.catalyst.expressions.Expression in, |
| java.util.List<org.apache.spark.sql.Encoder<T>> encoders)</code> </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code>static <T,W extends <a href="../../../../../../../../org/apache/beam/sdk/transforms/windowing/BoundedWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">BoundedWindow</a>><br>org.apache.spark.sql.Encoder<org.apache.beam.sdk.util.WindowedValue<T>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/beam/runners/spark/structuredstreaming/translation/helpers/EncoderHelpers.html#windowedValueEncoder-org.apache.spark.sql.Encoder-org.apache.spark.sql.Encoder-">windowedValueEncoder</a></span>(org.apache.spark.sql.Encoder<T> value, |
| org.apache.spark.sql.Encoder<W> window)</code> |
| <div class="block">Creates a Spark <code>Encoder</code> for <code>T</code> of <code>StructType</code> with fields <code>value</code>, |
| <code>timestamp</code>, <code>windows</code> and <code>pane</code>.</div> |
| </td> |
| </tr> |
| </table> |
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| </a> |
| <h3>Methods inherited from class java.lang.Object</h3> |
| <code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li> |
| </ul> |
| </li> |
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| </ul> |
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| </a> |
| <h3>Constructor Detail</h3> |
| <a name="EncoderHelpers--"> |
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| </a> |
| <ul class="blockListLast"> |
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| <h4>EncoderHelpers</h4> |
| <pre>public EncoderHelpers()</pre> |
| </li> |
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| <h3>Method Detail</h3> |
| <a name="encoderOf-java.lang.Class-"> |
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| <li class="blockList"> |
| <h4>encoderOf</h4> |
| <pre>public static <T> org.apache.spark.sql.Encoder<T> encoderOf(java.lang.Class<? super T> cls)</pre> |
| <div class="block">Gets or creates a default <code>Encoder</code> for <code>T</code>.</div> |
| </li> |
| </ul> |
| <a name="encoderFor-org.apache.beam.sdk.coders.Coder-"> |
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| </a> |
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| <h4>encoderFor</h4> |
| <pre>public static <T> org.apache.spark.sql.Encoder<T> encoderFor(<a href="../../../../../../../../org/apache/beam/sdk/coders/Coder.html" title="class in org.apache.beam.sdk.coders">Coder</a><T> coder)</pre> |
| <div class="block">Creates a Spark <code>Encoder</code> for <code>T</code> of <code>BinaryType</code> |
| delegating to a Beam <a href="../../../../../../../../org/apache/beam/sdk/coders/Coder.html" title="class in org.apache.beam.sdk.coders"><code>Coder</code></a> underneath. |
| |
| <p>Note: For common types, if available, default Spark <code>Encoder</code>s are used instead.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>coder</code> - Beam <a href="../../../../../../../../org/apache/beam/sdk/coders/Coder.html" title="class in org.apache.beam.sdk.coders"><code>Coder</code></a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="windowedValueEncoder-org.apache.spark.sql.Encoder-org.apache.spark.sql.Encoder-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
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| <h4>windowedValueEncoder</h4> |
| <pre>public static <T,W extends <a href="../../../../../../../../org/apache/beam/sdk/transforms/windowing/BoundedWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">BoundedWindow</a>> org.apache.spark.sql.Encoder<org.apache.beam.sdk.util.WindowedValue<T>> windowedValueEncoder(org.apache.spark.sql.Encoder<T> value, |
| org.apache.spark.sql.Encoder<W> window)</pre> |
| <div class="block">Creates a Spark <code>Encoder</code> for <code>T</code> of <code>StructType</code> with fields <code>value</code>, |
| <code>timestamp</code>, <code>windows</code> and <code>pane</code>.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>value</code> - <code>Encoder</code> to encode field `<code>value</code>`.</dd> |
| <dd><code>window</code> - <code>Encoder</code> to encode individual windows in field `<code>windows</code>`</dd> |
| </dl> |
| </li> |
| </ul> |
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| <h4>oneOfEncoder</h4> |
| <pre>public static <T> org.apache.spark.sql.Encoder<scala.Tuple2<java.lang.Integer,T>> oneOfEncoder(java.util.List<org.apache.spark.sql.Encoder<T>> encoders)</pre> |
| <div class="block">Creates a one-of Spark <code>Encoder</code> of <code>StructType</code> where each alternative is |
| represented as colum / field named by its index with a separate <code>Encoder</code> each. |
| |
| <p>Externally this is represented as tuple <code>(index, data)</code> where an index corresponds to |
| an <code>Encoder</code> in the provided list.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>encoders</code> - <code>Encoder</code>s for each alternative.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="kvEncoder-org.apache.spark.sql.Encoder-org.apache.spark.sql.Encoder-"> |
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| </a> |
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| <li class="blockList"> |
| <h4>kvEncoder</h4> |
| <pre>public static <K,V> org.apache.spark.sql.Encoder<<a href="../../../../../../../../org/apache/beam/sdk/values/KV.html" title="class in org.apache.beam.sdk.values">KV</a><K,V>> kvEncoder(org.apache.spark.sql.Encoder<K> key, |
| org.apache.spark.sql.Encoder<V> value)</pre> |
| <div class="block">Creates a Spark <code>Encoder</code> for <a href="../../../../../../../../org/apache/beam/sdk/values/KV.html" title="class in org.apache.beam.sdk.values"><code>KV</code></a> of <code>StructType</code> with fields <code>key</code> |
| and <code>value</code>.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>key</code> - <code>Encoder</code> to encode field `<code>key</code>`.</dd> |
| <dd><code>value</code> - <code>Encoder</code> to encode field `<code>value</code>`</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="collectionEncoder-org.apache.spark.sql.Encoder-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>collectionEncoder</h4> |
| <pre>public static <T> org.apache.spark.sql.Encoder<java.util.Collection<T>> collectionEncoder(org.apache.spark.sql.Encoder<T> enc)</pre> |
| <div class="block">Creates a Spark <code>Encoder</code> of <code>ArrayType</code> for Java <code>Collection</code>s with nullable |
| elements.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>enc</code> - <code>Encoder</code> to encode collection elements</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="collectionEncoder-org.apache.spark.sql.Encoder-boolean-"> |
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| </a> |
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| <h4>collectionEncoder</h4> |
| <pre>public static <T> org.apache.spark.sql.Encoder<java.util.Collection<T>> collectionEncoder(org.apache.spark.sql.Encoder<T> enc, |
| boolean nullable)</pre> |
| <div class="block">Creates a Spark <code>Encoder</code> of <code>ArrayType</code> for Java <code>Collection</code>s.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>enc</code> - <code>Encoder</code> to encode collection elements</dd> |
| <dd><code>nullable</code> - Allow nullable collection elements</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="mapEncoder-org.apache.spark.sql.Encoder-org.apache.spark.sql.Encoder-java.lang.Class-"> |
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| </a> |
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| <h4>mapEncoder</h4> |
| <pre>public static <MapT extends java.util.Map<K,V>,K,V> org.apache.spark.sql.Encoder<MapT> mapEncoder(org.apache.spark.sql.Encoder<K> key, |
| org.apache.spark.sql.Encoder<V> value, |
| java.lang.Class<MapT> cls)</pre> |
| <div class="block">Creates a Spark <code>Encoder</code> of <code>MapType</code> that deserializes to <code>MapT</code>.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>key</code> - <code>Encoder</code> to encode keys</dd> |
| <dd><code>value</code> - <code>Encoder</code> to encode values</dd> |
| <dd><code>cls</code> - Specific class to use, supported are <code>HashMap</code> and <code>TreeMap</code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="mutablePairEncoder-org.apache.spark.sql.Encoder-org.apache.spark.sql.Encoder-"> |
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| </a> |
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| <li class="blockList"> |
| <h4>mutablePairEncoder</h4> |
| <pre>public static <T1,T2> org.apache.spark.sql.Encoder<org.apache.spark.util.MutablePair<T1,T2>> mutablePairEncoder(org.apache.spark.sql.Encoder<T1> enc1, |
| org.apache.spark.sql.Encoder<T2> enc2)</pre> |
| <div class="block">Creates a Spark <code>Encoder</code> for Spark's <code>MutablePair</code> of <code>StructType</code> with |
| fields `<code>_1</code>` and `<code>_2</code>`. |
| |
| <p>This is intended to be used in places such as aggregators.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>enc1</code> - <code>Encoder</code> to encode `<code>_1</code>`</dd> |
| <dd><code>enc2</code> - <code>Encoder</code> to encode `<code>_2</code>`</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="serializeOneOf-org.apache.spark.sql.catalyst.expressions.Expression-java.util.List-"> |
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| <h4>serializeOneOf</h4> |
| <pre>public static <T> org.apache.spark.sql.catalyst.expressions.Expression serializeOneOf(org.apache.spark.sql.catalyst.expressions.Expression in, |
| java.util.List<org.apache.spark.sql.Encoder<T>> encoders)</pre> |
| </li> |
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| <a name="deserializeOneOf-org.apache.spark.sql.catalyst.expressions.Expression-java.util.List-"> |
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| <h4>deserializeOneOf</h4> |
| <pre>public static <T> org.apache.spark.sql.catalyst.expressions.Expression deserializeOneOf(org.apache.spark.sql.catalyst.expressions.Expression in, |
| java.util.List<org.apache.spark.sql.Encoder<T>> encoders)</pre> |
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