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| <li>java.lang.Object</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>) |
| protected abstract static class <span class="typeNameLabel">BlockBasedSource.Block<T></span> |
| extends java.lang.Object</pre> |
| <div class="block">A <code>Block</code> represents a block of records that can be read.</div> |
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| <td class="colFirst"><code>abstract <a href="../../../../../org/apache/beam/sdk/io/BlockBasedSource.Block.html" title="type parameter in BlockBasedSource.Block">T</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/io/BlockBasedSource.Block.html#getCurrentRecord--">getCurrentRecord</a></span>()</code> |
| <div class="block">Returns the current record.</div> |
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| <td class="colFirst"><code>abstract double</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/io/BlockBasedSource.Block.html#getFractionOfBlockConsumed--">getFractionOfBlockConsumed</a></span>()</code> |
| <div class="block">Returns the fraction of the block already consumed, if possible, as a value in <code>[0, |
| 1]</code>.</div> |
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| <td class="colFirst"><code>abstract boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/io/BlockBasedSource.Block.html#readNextRecord--">readNextRecord</a></span>()</code> |
| <div class="block">Reads the next record from the block and returns true iff one exists.</div> |
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| <pre>public abstract <a href="../../../../../org/apache/beam/sdk/io/BlockBasedSource.Block.html" title="type parameter in BlockBasedSource.Block">T</a> getCurrentRecord()</pre> |
| <div class="block">Returns the current record.</div> |
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| <pre>public abstract boolean readNextRecord() |
| throws java.io.IOException</pre> |
| <div class="block">Reads the next record from the block and returns true iff one exists.</div> |
| <dl> |
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| <dd><code>java.io.IOException</code></dd> |
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| <pre>public abstract double getFractionOfBlockConsumed()</pre> |
| <div class="block">Returns the fraction of the block already consumed, if possible, as a value in <code>[0, |
| 1]</code>. It should not include the current record. Successive results from this method must be |
| monotonically increasing. |
| |
| <p>If it is not possible to compute the fraction of the block consumed this method may return |
| zero. For example, when the total number of records in the block is unknown.</div> |
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