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| <div class="subTitle">org.apache.hawq.pxf.service.io</div> |
| <h2 title="Class BufferWritable" class="title">Class BufferWritable</h2> |
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| <ul class="inheritance"> |
| <li>java.lang.Object</li> |
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| <li>org.apache.hawq.pxf.service.io.BufferWritable</li> |
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| <pre>public class <span class="typeNameLabel">BufferWritable</span> |
| extends java.lang.Object |
| implements <a href="../../../../../../org/apache/hawq/pxf/service/io/Writable.html" title="interface in org.apache.hawq.pxf.service.io">Writable</a></pre> |
| <div class="block">A serializable object for transporting a byte array through the Bridge |
| framework</div> |
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| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hawq/pxf/service/io/BufferWritable.html#BufferWritable-byte:A-">BufferWritable</a></span>(byte[] inBuf)</code> |
| <div class="block">Constructs a BufferWritable.</div> |
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| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hawq/pxf/service/io/BufferWritable.html#append-byte:A-">append</a></span>(byte[] app)</code> |
| <div class="block">Appends given app's buffer to existing buffer.</div> |
| </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/hawq/pxf/service/io/BufferWritable.html#readFields-java.io.DataInput-">readFields</a></span>(java.io.DataInput in)</code> |
| <div class="block">Deserializes the fields of this object from <code>in</code>.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hawq/pxf/service/io/BufferWritable.html#write-java.io.DataOutput-">write</a></span>(java.io.DataOutput out)</code> |
| <div class="block">Serializes the fields of this object to <code>out</code>.</div> |
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| <h3>Methods inherited from class java.lang.Object</h3> |
| <code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li> |
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| <h4>BufferWritable</h4> |
| <pre>public BufferWritable(byte[] inBuf)</pre> |
| <div class="block">Constructs a BufferWritable. Copies the buffer reference and not the |
| actual bytes. This class is used when we intend to transport a buffer |
| through the Bridge framework without copying the data each time the |
| buffer is passed between the Bridge objects.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>inBuf</code> - buffer</dd> |
| </dl> |
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| <h4>write</h4> |
| <pre>public void write(java.io.DataOutput out) |
| throws java.io.IOException</pre> |
| <div class="block">Serializes the fields of this object to <code>out</code>.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hawq/pxf/service/io/Writable.html#write-java.io.DataOutput-">write</a></code> in interface <code><a href="../../../../../../org/apache/hawq/pxf/service/io/Writable.html" title="interface in org.apache.hawq.pxf.service.io">Writable</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>out</code> - <code>DataOutput</code> to serialize this object into.</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code>java.io.IOException</code> - if the buffer was not set</dd> |
| </dl> |
| </li> |
| </ul> |
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| <h4>readFields</h4> |
| <pre>public void readFields(java.io.DataInput in)</pre> |
| <div class="block">Deserializes the fields of this object from <code>in</code>. |
| <p> |
| For efficiency, implementations should attempt to re-use storage in the |
| existing object where possible. |
| </p></div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hawq/pxf/service/io/Writable.html#readFields-java.io.DataInput-">readFields</a></code> in interface <code><a href="../../../../../../org/apache/hawq/pxf/service/io/Writable.html" title="interface in org.apache.hawq.pxf.service.io">Writable</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>in</code> - <code>DataInput</code> to deserialize this object from</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code>java.lang.UnsupportedOperationException</code> - this function is not supported</dd> |
| </dl> |
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| <h4>append</h4> |
| <pre>public void append(byte[] app)</pre> |
| <div class="block">Appends given app's buffer to existing buffer. |
| <br> |
| Not efficient - requires copying both this and the appended buffer.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>app</code> - buffer to append</dd> |
| </dl> |
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