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| <div class="subTitle">org.apache.beam.sdk.io.mongodb</div> |
| <h2 title="Class MongoDbIO" class="title">Class MongoDbIO</h2> |
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| <ul class="inheritance"> |
| <li>java.lang.Object</li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.beam.sdk.io.mongodb.MongoDbIO</li> |
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| <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 class <span class="typeNameLabel">MongoDbIO</span> |
| extends java.lang.Object</pre> |
| <div class="block">IO to read and write data on MongoDB. |
| |
| <h3>Reading from MongoDB</h3> |
| |
| <p>MongoDbIO source returns a bounded collection of String as <code>PCollection<String></code>. The |
| String is the JSON form of the MongoDB Document. |
| |
| <p>To configure the MongoDB source, you have to provide the connection URI, the database name and |
| the collection name. The following example illustrates various options for configuring the |
| source: |
| |
| <pre><code> |
| pipeline.apply(MongoDbIO.read() |
| .withUri("mongodb://localhost:27017") |
| .withDatabase("my-database") |
| .withCollection("my-collection")) |
| // above three are required configuration, returns PCollection<String> |
| |
| // rest of the settings are optional |
| |
| </code></pre> |
| |
| <p>The source also accepts an optional configuration: <code>withFilter()</code> allows you to define a |
| JSON filter to get subset of data. |
| |
| <h3>Writing to MongoDB</h3> |
| |
| <p>MongoDB sink supports writing of Document (as JSON String) in a MongoDB. |
| |
| <p>To configure a MongoDB sink, you must specify a connection <code>URI</code>, a <code>Database</code> |
| name, a <code>Collection</code> name. For instance: |
| |
| <pre><code> |
| pipeline |
| .apply(...) |
| .apply(MongoDbIO.write() |
| .withUri("mongodb://localhost:27017") |
| .withDatabase("my-database") |
| .withCollection("my-collection") |
| .withNumSplits(30)) |
| |
| </code></pre></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/sdk/io/mongodb/MongoDbIO.Read.html" title="class in org.apache.beam.sdk.io.mongodb">MongoDbIO.Read</a></span></code> |
| <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> to read data from MongoDB.</div> |
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| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/sdk/io/mongodb/MongoDbIO.Write.html" title="class in org.apache.beam.sdk.io.mongodb">MongoDbIO.Write</a></span></code> |
| <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> to write to a MongoDB database.</div> |
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| <td class="colFirst"><code>static <a href="../../../../../../org/apache/beam/sdk/io/mongodb/MongoDbIO.Read.html" title="class in org.apache.beam.sdk.io.mongodb">MongoDbIO.Read</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/sdk/io/mongodb/MongoDbIO.html#read--">read</a></span>()</code> |
| <div class="block">Read data from MongoDB.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>static <a href="../../../../../../org/apache/beam/sdk/io/mongodb/MongoDbIO.Write.html" title="class in org.apache.beam.sdk.io.mongodb">MongoDbIO.Write</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/sdk/io/mongodb/MongoDbIO.html#write--">write</a></span>()</code> |
| <div class="block">Write data to MongoDB.</div> |
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| <h4>read</h4> |
| <pre>public static <a href="../../../../../../org/apache/beam/sdk/io/mongodb/MongoDbIO.Read.html" title="class in org.apache.beam.sdk.io.mongodb">MongoDbIO.Read</a> read()</pre> |
| <div class="block">Read data from MongoDB.</div> |
| </li> |
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| <h4>write</h4> |
| <pre>public static <a href="../../../../../../org/apache/beam/sdk/io/mongodb/MongoDbIO.Write.html" title="class in org.apache.beam.sdk.io.mongodb">MongoDbIO.Write</a> write()</pre> |
| <div class="block">Write data to MongoDB.</div> |
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