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| <div class="subTitle">org.apache.arrow.flatbuf</div> |
| <h2 title="Class FieldNode" class="title">Class FieldNode</h2> |
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| <ul class="inheritance"> |
| <li><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</a></li> |
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| <li>com.google.flatbuffers.Struct</li> |
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| <li>org.apache.arrow.flatbuf.FieldNode</li> |
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| <pre>public final class <span class="typeNameLabel">FieldNode</span> |
| extends com.google.flatbuffers.Struct</pre> |
| <div class="block">---------------------------------------------------------------------- |
| Data structures for describing a table row batch (a collection of |
| equal-length Arrow arrays) |
| Metadata about a field at some level of a nested type tree (but not |
| its children). |
| |
| For example, a List<Int16> with values `[[1, 2, 3], null, [4], [5, 6], null]` |
| would have {length: 5, null_count: 2} for its List node, and {length: 6, |
| null_count: 0} for its Int16 node, as separate FieldNode structs</div> |
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| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/arrow/flatbuf/FieldNode.Vector.html" title="class in org.apache.arrow.flatbuf">FieldNode.Vector</a></span></code> </td> |
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| <code>bb, bb_pos</code></li> |
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| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/arrow/flatbuf/FieldNode.html#FieldNode--">FieldNode</a></span>()</code> </td> |
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| <td class="colFirst"><code><a href="../../../../org/apache/arrow/flatbuf/FieldNode.html" title="class in org.apache.arrow.flatbuf">FieldNode</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/arrow/flatbuf/FieldNode.html#Z:Z__assign-int-java.nio.ByteBuffer-">__assign</a></span>(int _i, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html?is-external=true" title="class or interface in java.nio">ByteBuffer</a> _bb)</code> </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/arrow/flatbuf/FieldNode.html#Z:Z__init-int-java.nio.ByteBuffer-">__init</a></span>(int _i, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html?is-external=true" title="class or interface in java.nio">ByteBuffer</a> _bb)</code> </td> |
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| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/arrow/flatbuf/FieldNode.html#createFieldNode-com.google.flatbuffers.FlatBufferBuilder-long-long-">createFieldNode</a></span>(com.google.flatbuffers.FlatBufferBuilder builder, |
| long length, |
| long nullCount)</code> </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>long</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/arrow/flatbuf/FieldNode.html#length--">length</a></span>()</code> |
| <div class="block">The number of value slots in the Arrow array at this level of a nested |
| tree</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>long</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/arrow/flatbuf/FieldNode.html#nullCount--">nullCount</a></span>()</code> |
| <div class="block">The number of observed nulls.</div> |
| </td> |
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| <h4>FieldNode</h4> |
| <pre>public FieldNode()</pre> |
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| <pre>public void __init(int _i, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html?is-external=true" title="class or interface in java.nio">ByteBuffer</a> _bb)</pre> |
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| <pre>public <a href="../../../../org/apache/arrow/flatbuf/FieldNode.html" title="class in org.apache.arrow.flatbuf">FieldNode</a> __assign(int _i, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html?is-external=true" title="class or interface in java.nio">ByteBuffer</a> _bb)</pre> |
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| <pre>public long length()</pre> |
| <div class="block">The number of value slots in the Arrow array at this level of a nested |
| tree</div> |
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| <pre>public long nullCount()</pre> |
| <div class="block">The number of observed nulls. Fields with null_count == 0 may choose not |
| to write their physical validity bitmap out as a materialized buffer, |
| instead setting the length of the bitmap buffer to 0.</div> |
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| <h4>createFieldNode</h4> |
| <pre>public static int createFieldNode(com.google.flatbuffers.FlatBufferBuilder builder, |
| long length, |
| long nullCount)</pre> |
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