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<div class="subTitle">com.sleepycat.bind.serial</div>
<h2 title="Class SerialOutput" class="title">Class SerialOutput</h2>
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<li>java.lang.Object</li>
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<li>java.io.OutputStream</li>
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<li>java.io.ObjectOutputStream</li>
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<li>com.sleepycat.bind.serial.SerialOutput</li>
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<dt>All Implemented Interfaces:</dt>
<dd>java.io.Closeable, java.io.DataOutput, java.io.Flushable, java.io.ObjectOutput, java.io.ObjectStreamConstants, java.lang.AutoCloseable</dd>
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<pre>public class <span class="typeNameLabel">SerialOutput</span>
extends java.io.ObjectOutputStream</pre>
<div class="block">A specialized <code>ObjectOutputStream</code> that stores class description
information in a <code>ClassCatalog</code>. It is used by
<code>SerialBinding</code>.
<p>This class is used instead of an <code>ObjectOutputStream</code>, which it
extends, to write a compact object stream. For writing objects to a
database normally one of the serial binding classes is used. <a href="../../../../com/sleepycat/bind/serial/SerialOutput.html" title="class in com.sleepycat.bind.serial"><code>SerialOutput</code></a> is used when an <code>ObjectOutputStream</code> is needed along
with compact storage. A <a href="../../../../com/sleepycat/bind/serial/ClassCatalog.html" title="interface in com.sleepycat.bind.serial"><code>ClassCatalog</code></a> must be supplied, however, to
stored shared class descriptions.</p>
<p>The <a href="../../../../com/sleepycat/bind/serial/ClassCatalog.html" title="interface in com.sleepycat.bind.serial"><code>ClassCatalog</code></a> is used to store class definitions rather than
embedding these into the stream. Instead, a class format identifier is
embedded into the stream. This identifier is then used by <a href="../../../../com/sleepycat/bind/serial/SerialInput.html" title="class in com.sleepycat.bind.serial"><code>SerialInput</code></a> to load the class format to deserialize the object.</p></div>
<dl>
<dt><span class="simpleTagLabel">Author:</span></dt>
<dd>Mark Hayes</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="SerialBinding.html#evolution">Class Evolution</a></dd>
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<h3>Fields inherited from interface&nbsp;java.io.ObjectStreamConstants</h3>
<code>baseWireHandle, PROTOCOL_VERSION_1, PROTOCOL_VERSION_2, SC_BLOCK_DATA, SC_ENUM, SC_EXTERNALIZABLE, SC_SERIALIZABLE, SC_WRITE_METHOD, STREAM_MAGIC, STREAM_VERSION, SUBCLASS_IMPLEMENTATION_PERMISSION, SUBSTITUTION_PERMISSION, TC_ARRAY, TC_BASE, TC_BLOCKDATA, TC_BLOCKDATALONG, TC_CLASS, TC_CLASSDESC, TC_ENDBLOCKDATA, TC_ENUM, TC_EXCEPTION, TC_LONGSTRING, TC_MAX, TC_NULL, TC_OBJECT, TC_PROXYCLASSDESC, TC_REFERENCE, TC_RESET, TC_STRING</code></li>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../com/sleepycat/bind/serial/SerialOutput.html#SerialOutput-java.io.OutputStream-com.sleepycat.bind.serial.ClassCatalog-">SerialOutput</a></span>(java.io.OutputStream&nbsp;out,
<a href="../../../../com/sleepycat/bind/serial/ClassCatalog.html" title="interface in com.sleepycat.bind.serial">ClassCatalog</a>&nbsp;classCatalog)</code>
<div class="block">Creates a serial output stream.</div>
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<td class="colFirst"><code>static byte[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/sleepycat/bind/serial/SerialOutput.html#getStreamHeader--">getStreamHeader</a></span>()</code>
<div class="block">Returns the fixed stream header used for all serialized streams in
PROTOCOL_VERSION_2 format.</div>
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<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/sleepycat/bind/serial/SerialOutput.html#writeClassDescriptor-java.io.ObjectStreamClass-">writeClassDescriptor</a></span>(java.io.ObjectStreamClass&nbsp;classdesc)</code>&nbsp;</td>
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<h3>Methods inherited from class&nbsp;java.io.ObjectOutputStream</h3>
<code>annotateClass, annotateProxyClass, close, defaultWriteObject, drain, enableReplaceObject, flush, putFields, replaceObject, reset, useProtocolVersion, write, write, write, writeBoolean, writeByte, writeBytes, writeChar, writeChars, writeDouble, writeFields, writeFloat, writeInt, writeLong, writeObject, writeObjectOverride, writeShort, writeStreamHeader, writeUnshared, writeUTF</code></li>
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<h4>SerialOutput</h4>
<pre>public&nbsp;SerialOutput(java.io.OutputStream&nbsp;out,
<a href="../../../../com/sleepycat/bind/serial/ClassCatalog.html" title="interface in com.sleepycat.bind.serial">ClassCatalog</a>&nbsp;classCatalog)
throws java.io.IOException</pre>
<div class="block">Creates a serial output stream.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>out</code> - is the output stream to which the compact serialized objects
will be written.</dd>
<dd><code>classCatalog</code> - is the catalog to which the class descriptions for
the serialized objects will be written.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.io.IOException</code> - if an I/O error occurs while writing stream header.</dd>
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<h4>writeClassDescriptor</h4>
<pre>protected&nbsp;void&nbsp;writeClassDescriptor(java.io.ObjectStreamClass&nbsp;classdesc)
throws java.io.IOException</pre>
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<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code>writeClassDescriptor</code>&nbsp;in class&nbsp;<code>java.io.ObjectOutputStream</code></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.io.IOException</code></dd>
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<h4>getStreamHeader</h4>
<pre>public static&nbsp;byte[]&nbsp;getStreamHeader()</pre>
<div class="block">Returns the fixed stream header used for all serialized streams in
PROTOCOL_VERSION_2 format. To save space this header can be removed and
serialized streams before storage and inserted before deserializing.
<a href="../../../../com/sleepycat/bind/serial/SerialOutput.html" title="class in com.sleepycat.bind.serial"><code>SerialOutput</code></a> always uses PROTOCOL_VERSION_2 serialization format
to guarantee that this header is fixed. <a href="../../../../com/sleepycat/bind/serial/SerialBinding.html" title="class in com.sleepycat.bind.serial"><code>SerialBinding</code></a> removes
this header from serialized streams automatically.</div>
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<dt><span class="returnLabel">Returns:</span></dt>
<dd>the fixed stream header.</dd>
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