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| <div class="subTitle">org.apache.beam.sdk.io.aws.dynamodb</div> |
| <h2 title="Class DynamoDBIO" class="title">Class DynamoDBIO</h2> |
| </div> |
| <div class="contentContainer"> |
| <ul class="inheritance"> |
| <li>java.lang.Object</li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.beam.sdk.io.aws.dynamodb.DynamoDBIO</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 final class <span class="typeNameLabel">DynamoDBIO</span> |
| extends java.lang.Object</pre> |
| <div class="block"><a href="../../../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms"><code>PTransform</code></a>s to read/write from/to <a href="https://aws.amazon.com/dynamodb/">Amazon |
| DynamoDB</a>. |
| |
| <h3>Writing to DynamoDB</h3> |
| |
| <p>Example usage: |
| |
| <pre><code> |
| PCollection<T> data = ...; |
| data.apply( |
| DynamoDBIO.<WriteRequest>write() |
| .withWriteRequestMapperFn( |
| (SerializableFunction<T, KV<String, WriteRequest>>) |
| //Transforming your T data into KV<String, WriteRequest> |
| t -> KV.of(tableName, writeRequest)) |
| .withRetryConfiguration( |
| DynamoDBIO.RetryConfiguration.create(5, Duration.standardMinutes(1))) |
| .withAwsClientsProvider(new BasicDynamoDbProvider(accessKey, secretKey, region)); |
| </code></pre> |
| |
| <p>As a client, you need to provide at least the following things: |
| |
| <ul> |
| <li>Retry configuration |
| <li>Specify AwsClientsProvider. You can pass on the default one BasicDynamoDbProvider |
| <li>Mapper function with a table name to map or transform your object into KV<tableName, |
| writeRequest> |
| </ul> |
| |
| <h3>Reading from DynamoDB</h3> |
| |
| <p>Example usage: |
| |
| <pre><code> |
| PCollection<List<Map<String, AttributeValue>>> output = |
| pipeline.apply( |
| DynamoDBIO.<List<Map<String, AttributeValue>>>read() |
| .withAwsClientsProvider(new BasicDynamoDBProvider(accessKey, secretKey, region)) |
| .withScanRequestFn( |
| (SerializableFunction<Void, ScanRequest>) |
| input -> new ScanRequest(tableName).withTotalSegments(1)) |
| .items()); |
| </code></pre> |
| |
| <p>As a client, you need to provide at least the following things: |
| |
| <ul> |
| <li>Specify AwsClientsProvider. You can pass on the default one BasicDynamoDBProvider |
| <li>ScanRequestFn, which you build a ScanRequest object with at least table name and total |
| number of segment. Note This number should base on the number of your workers |
| </ul></div> |
| </li> |
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| <tr class="altColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/sdk/io/aws/dynamodb/DynamoDBIO.Read.html" title="class in org.apache.beam.sdk.io.aws.dynamodb">DynamoDBIO.Read</a><<a href="../../../../../../../org/apache/beam/sdk/io/aws/dynamodb/DynamoDBIO.Read.html" title="type parameter in DynamoDBIO.Read">T</a>></span></code> |
| <div class="block">Read data from DynamoDB and return ScanResult.</div> |
| </td> |
| </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/aws/dynamodb/DynamoDBIO.RetryConfiguration.html" title="class in org.apache.beam.sdk.io.aws.dynamodb">DynamoDBIO.RetryConfiguration</a></span></code> |
| <div class="block">A POJO encapsulating a configuration for retry behavior when issuing requests to DynamoDB.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/sdk/io/aws/dynamodb/DynamoDBIO.Write.html" title="class in org.apache.beam.sdk.io.aws.dynamodb">DynamoDBIO.Write</a><<a href="../../../../../../../org/apache/beam/sdk/io/aws/dynamodb/DynamoDBIO.Write.html" title="type parameter in DynamoDBIO.Write">T</a>></span></code> |
| <div class="block">Write a PCollection<T> data into DynamoDB.</div> |
| </td> |
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| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/sdk/io/aws/dynamodb/DynamoDBIO.html#DynamoDBIO--">DynamoDBIO</a></span>()</code> </td> |
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| <td class="colFirst"><code>static <T> <a href="../../../../../../../org/apache/beam/sdk/io/aws/dynamodb/DynamoDBIO.Read.html" title="class in org.apache.beam.sdk.io.aws.dynamodb">DynamoDBIO.Read</a><T></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/sdk/io/aws/dynamodb/DynamoDBIO.html#read--">read</a></span>()</code> </td> |
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| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>static <T> <a href="../../../../../../../org/apache/beam/sdk/io/aws/dynamodb/DynamoDBIO.Write.html" title="class in org.apache.beam.sdk.io.aws.dynamodb">DynamoDBIO.Write</a><T></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/sdk/io/aws/dynamodb/DynamoDBIO.html#write--">write</a></span>()</code> </td> |
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| <h4>DynamoDBIO</h4> |
| <pre>public DynamoDBIO()</pre> |
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| <pre>public static <T> <a href="../../../../../../../org/apache/beam/sdk/io/aws/dynamodb/DynamoDBIO.Read.html" title="class in org.apache.beam.sdk.io.aws.dynamodb">DynamoDBIO.Read</a><T> read()</pre> |
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| <pre>public static <T> <a href="../../../../../../../org/apache/beam/sdk/io/aws/dynamodb/DynamoDBIO.Write.html" title="class in org.apache.beam.sdk.io.aws.dynamodb">DynamoDBIO.Write</a><T> write()</pre> |
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