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| <h2 title="Class KStreamBuilder" class="title">Class KStreamBuilder</h2> |
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| <pre>public class <span class="strong">KStreamBuilder</span> |
| extends <a href="../../../../../org/apache/kafka/streams/processor/TopologyBuilder.html" title="class in org.apache.kafka.streams.processor">TopologyBuilder</a></pre> |
| <div class="block"><a href="../../../../../org/apache/kafka/streams/kstream/KStreamBuilder.html" title="class in org.apache.kafka.streams.kstream"><code>KStreamBuilder</code></a> is a subclass of <a href="../../../../../org/apache/kafka/streams/processor/TopologyBuilder.html" title="class in org.apache.kafka.streams.processor"><code>TopologyBuilder</code></a> that provides the Kafka Streams DSL |
| for users to specify computational logic and translates the given logic to a <code>org.apache.kafka.streams.processor.internals.ProcessorTopology</code>.</div> |
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| <code><a href="../../../../../org/apache/kafka/streams/processor/TopologyBuilder.TopicsInfo.html" title="class in org.apache.kafka.streams.processor">TopologyBuilder.TopicsInfo</a></code></li> |
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| <th class="colOne" scope="col">Constructor and Description</th> |
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| <td class="colOne"><code><strong><a href="../../../../../org/apache/kafka/streams/kstream/KStreamBuilder.html#KStreamBuilder()">KStreamBuilder</a></strong>()</code> |
| <div class="block">Create a new <a href="../../../../../org/apache/kafka/streams/kstream/KStreamBuilder.html" title="class in org.apache.kafka.streams.kstream"><code>KStreamBuilder</code></a> instance.</div> |
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| <th class="colFirst" scope="col">Modifier and Type</th> |
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| <td class="colFirst"><code><K,V> <a href="../../../../../org/apache/kafka/streams/kstream/KStream.html" title="interface in org.apache.kafka.streams.kstream">KStream</a><K,V></code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/kafka/streams/kstream/KStreamBuilder.html#merge(org.apache.kafka.streams.kstream.KStream...)">merge</a></strong>(<a href="../../../../../org/apache/kafka/streams/kstream/KStream.html" title="interface in org.apache.kafka.streams.kstream">KStream</a><K,V>... streams)</code> |
| <div class="block">Create a new instance of <a href="../../../../../org/apache/kafka/streams/kstream/KStream.html" title="interface in org.apache.kafka.streams.kstream"><code>KStream</code></a> by merging the given streams.</div> |
| </td> |
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| <td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/kafka/streams/kstream/KStreamBuilder.html#newName(java.lang.String)">newName</a></strong>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> prefix)</code> |
| <div class="block">Create a unique processor name used for translation into the processor topology.</div> |
| </td> |
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| <td class="colFirst"><code><K,V> <a href="../../../../../org/apache/kafka/streams/kstream/KStream.html" title="interface in org.apache.kafka.streams.kstream">KStream</a><K,V></code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/kafka/streams/kstream/KStreamBuilder.html#stream(org.apache.kafka.common.serialization.Serde,%20org.apache.kafka.common.serialization.Serde,%20java.lang.String...)">stream</a></strong>(<a href="../../../../../org/apache/kafka/common/serialization/Serde.html" title="interface in org.apache.kafka.common.serialization">Serde</a><K> keySerde, |
| <a href="../../../../../org/apache/kafka/common/serialization/Serde.html" title="interface in org.apache.kafka.common.serialization">Serde</a><V> valSerde, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>... topics)</code> |
| <div class="block">Create a <a href="../../../../../org/apache/kafka/streams/kstream/KStream.html" title="interface in org.apache.kafka.streams.kstream"><code>KStream</code></a> instance from the specified topics.</div> |
| </td> |
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| <td class="colFirst"><code><K,V> <a href="../../../../../org/apache/kafka/streams/kstream/KStream.html" title="interface in org.apache.kafka.streams.kstream">KStream</a><K,V></code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/kafka/streams/kstream/KStreamBuilder.html#stream(java.lang.String...)">stream</a></strong>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>... topics)</code> |
| <div class="block">Create a <a href="../../../../../org/apache/kafka/streams/kstream/KStream.html" title="interface in org.apache.kafka.streams.kstream"><code>KStream</code></a> instance from the specified topics.</div> |
| </td> |
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| <td class="colFirst"><code><K,V> <a href="../../../../../org/apache/kafka/streams/kstream/KTable.html" title="interface in org.apache.kafka.streams.kstream">KTable</a><K,V></code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/kafka/streams/kstream/KStreamBuilder.html#table(org.apache.kafka.common.serialization.Serde,%20org.apache.kafka.common.serialization.Serde,%20java.lang.String)">table</a></strong>(<a href="../../../../../org/apache/kafka/common/serialization/Serde.html" title="interface in org.apache.kafka.common.serialization">Serde</a><K> keySerde, |
| <a href="../../../../../org/apache/kafka/common/serialization/Serde.html" title="interface in org.apache.kafka.common.serialization">Serde</a><V> valSerde, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> topic)</code> |
| <div class="block">Create a <a href="../../../../../org/apache/kafka/streams/kstream/KTable.html" title="interface in org.apache.kafka.streams.kstream"><code>KTable</code></a> instance for the specified topic.</div> |
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| <td class="colFirst"><code><K,V> <a href="../../../../../org/apache/kafka/streams/kstream/KTable.html" title="interface in org.apache.kafka.streams.kstream">KTable</a><K,V></code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/kafka/streams/kstream/KStreamBuilder.html#table(java.lang.String)">table</a></strong>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> topic)</code> |
| <div class="block">Create a <a href="../../../../../org/apache/kafka/streams/kstream/KTable.html" title="interface in org.apache.kafka.streams.kstream"><code>KTable</code></a> instance for the specified topic.</div> |
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| <code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang">finalize</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait(long,%20int)" title="class or interface in java.lang">wait</a></code></li> |
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| <h4>KStreamBuilder</h4> |
| <pre>public KStreamBuilder()</pre> |
| <div class="block">Create a new <a href="../../../../../org/apache/kafka/streams/kstream/KStreamBuilder.html" title="class in org.apache.kafka.streams.kstream"><code>KStreamBuilder</code></a> instance.</div> |
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| <h4>stream</h4> |
| <pre>public <K,V> <a href="../../../../../org/apache/kafka/streams/kstream/KStream.html" title="interface in org.apache.kafka.streams.kstream">KStream</a><K,V> stream(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>... topics)</pre> |
| <div class="block">Create a <a href="../../../../../org/apache/kafka/streams/kstream/KStream.html" title="interface in org.apache.kafka.streams.kstream"><code>KStream</code></a> instance from the specified topics. |
| The default deserializers specified in the config are used. |
| <p> |
| If multiple topics are specified there are nor ordering guaranteed for records from different topics.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>topics</code> - the topic names; must contain at least one topic name</dd> |
| <dt><span class="strong">Returns:</span></dt><dd>a <a href="../../../../../org/apache/kafka/streams/kstream/KStream.html" title="interface in org.apache.kafka.streams.kstream"><code>KStream</code></a> for the specified topics</dd></dl> |
| </li> |
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| <h4>stream</h4> |
| <pre>public <K,V> <a href="../../../../../org/apache/kafka/streams/kstream/KStream.html" title="interface in org.apache.kafka.streams.kstream">KStream</a><K,V> stream(<a href="../../../../../org/apache/kafka/common/serialization/Serde.html" title="interface in org.apache.kafka.common.serialization">Serde</a><K> keySerde, |
| <a href="../../../../../org/apache/kafka/common/serialization/Serde.html" title="interface in org.apache.kafka.common.serialization">Serde</a><V> valSerde, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>... topics)</pre> |
| <div class="block">Create a <a href="../../../../../org/apache/kafka/streams/kstream/KStream.html" title="interface in org.apache.kafka.streams.kstream"><code>KStream</code></a> instance from the specified topics. |
| <p> |
| If multiple topics are specified there are nor ordering guaranteed for records from different topics.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>keySerde</code> - key serde used to read this source <a href="../../../../../org/apache/kafka/streams/kstream/KStream.html" title="interface in org.apache.kafka.streams.kstream"><code>KStream</code></a>, |
| if not specified the default serde defined in the configs will be used</dd><dd><code>valSerde</code> - value serde used to read this source <a href="../../../../../org/apache/kafka/streams/kstream/KStream.html" title="interface in org.apache.kafka.streams.kstream"><code>KStream</code></a>, |
| if not specified the default serde defined in the configs will be used</dd><dd><code>topics</code> - the topic names; must contain at least one topic name</dd> |
| <dt><span class="strong">Returns:</span></dt><dd>a <a href="../../../../../org/apache/kafka/streams/kstream/KStream.html" title="interface in org.apache.kafka.streams.kstream"><code>KStream</code></a> for the specified topics</dd></dl> |
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| <pre>public <K,V> <a href="../../../../../org/apache/kafka/streams/kstream/KTable.html" title="interface in org.apache.kafka.streams.kstream">KTable</a><K,V> table(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> topic)</pre> |
| <div class="block">Create a <a href="../../../../../org/apache/kafka/streams/kstream/KTable.html" title="interface in org.apache.kafka.streams.kstream"><code>KTable</code></a> instance for the specified topic. |
| Record keys of the topic should never by null, otherwise an exception will be thrown at runtime. |
| The default deserializers specified in the config are used.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>topic</code> - the topic name; cannot be null</dd> |
| <dt><span class="strong">Returns:</span></dt><dd>a <a href="../../../../../org/apache/kafka/streams/kstream/KTable.html" title="interface in org.apache.kafka.streams.kstream"><code>KTable</code></a> for the specified topics</dd></dl> |
| </li> |
| </ul> |
| <a name="table(org.apache.kafka.common.serialization.Serde, org.apache.kafka.common.serialization.Serde, java.lang.String)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
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| <h4>table</h4> |
| <pre>public <K,V> <a href="../../../../../org/apache/kafka/streams/kstream/KTable.html" title="interface in org.apache.kafka.streams.kstream">KTable</a><K,V> table(<a href="../../../../../org/apache/kafka/common/serialization/Serde.html" title="interface in org.apache.kafka.common.serialization">Serde</a><K> keySerde, |
| <a href="../../../../../org/apache/kafka/common/serialization/Serde.html" title="interface in org.apache.kafka.common.serialization">Serde</a><V> valSerde, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> topic)</pre> |
| <div class="block">Create a <a href="../../../../../org/apache/kafka/streams/kstream/KTable.html" title="interface in org.apache.kafka.streams.kstream"><code>KTable</code></a> instance for the specified topic. |
| Record keys of the topic should never by null, otherwise an exception will be thrown at runtime.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>keySerde</code> - key serde used to send key-value pairs, |
| if not specified the default key serde defined in the configuration will be used</dd><dd><code>valSerde</code> - value serde used to send key-value pairs, |
| if not specified the default value serde defined in the configuration will be used</dd><dd><code>topic</code> - the topic name; cannot be null</dd> |
| <dt><span class="strong">Returns:</span></dt><dd>a <a href="../../../../../org/apache/kafka/streams/kstream/KTable.html" title="interface in org.apache.kafka.streams.kstream"><code>KTable</code></a> for the specified topics</dd></dl> |
| </li> |
| </ul> |
| <a name="merge(org.apache.kafka.streams.kstream.KStream...)"> |
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| <h4>merge</h4> |
| <pre>public <K,V> <a href="../../../../../org/apache/kafka/streams/kstream/KStream.html" title="interface in org.apache.kafka.streams.kstream">KStream</a><K,V> merge(<a href="../../../../../org/apache/kafka/streams/kstream/KStream.html" title="interface in org.apache.kafka.streams.kstream">KStream</a><K,V>... streams)</pre> |
| <div class="block">Create a new instance of <a href="../../../../../org/apache/kafka/streams/kstream/KStream.html" title="interface in org.apache.kafka.streams.kstream"><code>KStream</code></a> by merging the given streams. |
| <p> |
| There are nor ordering guaranteed for records from different streams.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>streams</code> - the instances of <a href="../../../../../org/apache/kafka/streams/kstream/KStream.html" title="interface in org.apache.kafka.streams.kstream"><code>KStream</code></a> to be merged</dd> |
| <dt><span class="strong">Returns:</span></dt><dd>a <a href="../../../../../org/apache/kafka/streams/kstream/KStream.html" title="interface in org.apache.kafka.streams.kstream"><code>KStream</code></a> containing all records of the given streams</dd></dl> |
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| <a name="newName(java.lang.String)"> |
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| <h4>newName</h4> |
| <pre>public <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> newName(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> prefix)</pre> |
| <div class="block">Create a unique processor name used for translation into the processor topology. |
| This function is only for internal usage.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>prefix</code> - processor name prefix</dd> |
| <dt><span class="strong">Returns:</span></dt><dd>a new unique name</dd></dl> |
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