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SerialBinding (Oracle - Berkeley DB Java API)
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<b>Berkeley DB</b><br><font size="-1"> version 5.3.28</font></EM>
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com.sleepycat.bind.serial</FONT>
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Class SerialBinding<E></H2>
<PRE>
<A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</A>
<IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><A HREF="../../../../com/sleepycat/bind/serial/SerialBase.html" title="class in com.sleepycat.bind.serial">com.sleepycat.bind.serial.SerialBase</A>
<IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>com.sleepycat.bind.serial.SerialBinding<E></B>
</PRE>
<DL>
<DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../com/sleepycat/bind/EntryBinding.html" title="interface in com.sleepycat.bind">EntryBinding</A><E></DD>
</DL>
<HR>
<DL>
<DT><PRE>public class <B>SerialBinding<E></B><DT>extends <A HREF="../../../../com/sleepycat/bind/serial/SerialBase.html" title="class in com.sleepycat.bind.serial">SerialBase</A><DT>implements <A HREF="../../../../com/sleepycat/bind/EntryBinding.html" title="interface in com.sleepycat.bind">EntryBinding</A><E></DL>
</PRE>
<P>
A concrete <code>EntryBinding</code> that treats a key or data entry as
a serialized object.
<p>This binding stores objects in serialized object format. The
deserialized objects are returned by the binding, and their
<code>Class</code> must implement the <code>Serializable</code>
interface.</p>
<p>For key bindings, a tuple binding is usually a better choice than a
serial binding. A tuple binding gives a reasonable sort order, and works
with comparators in all cases -- see below.</p>
<p><em>WARNING:</em> SerialBinding should not be used with Berkeley DB Java
Edition for key bindings, when a custom comparator is used. In JE,
comparators are instantiated and called internally at times when databases
are not accessible. Because serial bindings depend on the class catalog
database, a serial binding cannot be used during these times. An attempt
to use a serial binding with a custom comparator will result in a
NullPointerException during environment open or close.</p>
<p><a name="evolution"><strong>Class Evolution</strong></a></p>
<p><code>SerialBinding</code> and other classes in this package use standard Java
serialization and all rules of Java serialization apply. This includes the
rules for class evolution. Once an instance of a class is stored, the class
must maintain its <code>serialVersionUID</code> and follow the rules defined in
the Java specification. To use a new incompatible version of a class, a
different <A HREF="../../../../com/sleepycat/bind/serial/ClassCatalog.html" title="interface in com.sleepycat.bind.serial"><CODE>ClassCatalog</CODE></A> must be used or the class catalog database
must be truncated.</p>
<p>If more advanced class evolution features are required, consider using
the <A HREF="../../../../com/sleepycat/persist/evolve/package-summary.html"><CODE>Direct Persistence Layer</CODE></A>.</p>
<P>
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<!-- ======== CONSTRUCTOR SUMMARY ======== -->
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><B><A HREF="../../../../com/sleepycat/bind/serial/SerialBinding.html#SerialBinding(com.sleepycat.bind.serial.ClassCatalog, java.lang.Class)">SerialBinding</A></B>(<A HREF="../../../../com/sleepycat/bind/serial/ClassCatalog.html" title="interface in com.sleepycat.bind.serial">ClassCatalog</A> classCatalog,
<A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A><<A HREF="../../../../com/sleepycat/bind/serial/SerialBinding.html" title="type parameter in SerialBinding">E</A>> baseClass)</CODE>
<BR>
Creates a serial binding.</TD>
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<!-- ========== METHOD SUMMARY =========== -->
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../../com/sleepycat/bind/serial/SerialBinding.html" title="type parameter in SerialBinding">E</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/bind/serial/SerialBinding.html#entryToObject(com.sleepycat.db.DatabaseEntry)">entryToObject</A></B>(<A HREF="../../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> entry)</CODE>
<BR>
Deserialize an object from an entry buffer.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A><<A HREF="../../../../com/sleepycat/bind/serial/SerialBinding.html" title="type parameter in SerialBinding">E</A>></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/bind/serial/SerialBinding.html#getBaseClass()">getBaseClass</A></B>()</CODE>
<BR>
Returns the base class for this binding.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/ClassLoader.html?is-external=true" title="class or interface in java.lang">ClassLoader</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/bind/serial/SerialBinding.html#getClassLoader()">getClassLoader</A></B>()</CODE>
<BR>
Returns the class loader to be used during deserialization, or null if a
default class loader should be used.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/bind/serial/SerialBinding.html#objectToEntry(E, com.sleepycat.db.DatabaseEntry)">objectToEntry</A></B>(<A HREF="../../../../com/sleepycat/bind/serial/SerialBinding.html" title="type parameter in SerialBinding">E</A> object,
<A HREF="../../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> entry)</CODE>
<BR>
Serialize an object into an entry buffer.</TD>
</TR>
</TABLE>
<A NAME="methods_inherited_from_class_com.sleepycat.bind.serial.SerialBase"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TH ALIGN="left"><B>Methods inherited from class com.sleepycat.bind.serial.<A HREF="../../../../com/sleepycat/bind/serial/SerialBase.html" title="class in com.sleepycat.bind.serial">SerialBase</A></B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../../com/sleepycat/bind/serial/SerialBase.html#getSerialBufferSize()">getSerialBufferSize</A>, <A HREF="../../../../com/sleepycat/bind/serial/SerialBase.html#getSerialOutput(java.lang.Object)">getSerialOutput</A>, <A HREF="../../../../com/sleepycat/bind/serial/SerialBase.html#setSerialBufferSize(int)">setSerialBufferSize</A></CODE></TD>
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<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TH ALIGN="left"><B>Methods inherited from class java.lang.<A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></B></TH>
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<TD><CODE><A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</A>, <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</A>, <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang">finalize</A>, <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</A>, <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</A>, <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</A>, <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</A>, <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</A>, <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</A>, <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</A>, <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#wait(long, int)" title="class or interface in java.lang">wait</A></CODE></TD>
</TR>
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<P>
<!-- ========= CONSTRUCTOR DETAIL ======== -->
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<A NAME="SerialBinding(com.sleepycat.bind.serial.ClassCatalog, java.lang.Class)"><!-- --></A><H3>
SerialBinding</H3>
<PRE>
public <B>SerialBinding</B>(<A HREF="../../../../com/sleepycat/bind/serial/ClassCatalog.html" title="interface in com.sleepycat.bind.serial">ClassCatalog</A> classCatalog,
<A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A><<A HREF="../../../../com/sleepycat/bind/serial/SerialBinding.html" title="type parameter in SerialBinding">E</A>> baseClass)</PRE>
<DL>
<DD>Creates a serial binding.
<P>
<DL>
<DT><B>Parameters:</B><DD><CODE>classCatalog</CODE> - is the catalog to hold shared class information and
for a database should be a <A HREF="../../../../com/sleepycat/bind/serial/StoredClassCatalog.html" title="class in com.sleepycat.bind.serial"><CODE>StoredClassCatalog</CODE></A>.<DD><CODE>baseClass</CODE> - is the base class for serialized objects stored using
this binding -- all objects using this binding must be an instance of
this class. Note that if this parameter is non-null, then this binding
will not support serialization of null values.</DL>
</DL>
<!-- ============ METHOD DETAIL ========== -->
<A NAME="method_detail"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<B>Method Detail</B></FONT></TH>
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</TABLE>
<A NAME="getBaseClass()"><!-- --></A><H3>
getBaseClass</H3>
<PRE>
public final <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A><<A HREF="../../../../com/sleepycat/bind/serial/SerialBinding.html" title="type parameter in SerialBinding">E</A>> <B>getBaseClass</B>()</PRE>
<DL>
<DD>Returns the base class for this binding.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the base class for this binding.</DL>
</DD>
</DL>
<HR>
<A NAME="getClassLoader()"><!-- --></A><H3>
getClassLoader</H3>
<PRE>
public <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/ClassLoader.html?is-external=true" title="class or interface in java.lang">ClassLoader</A> <B>getClassLoader</B>()</PRE>
<DL>
<DD>Returns the class loader to be used during deserialization, or null if a
default class loader should be used. The default implementation of this
method returns <A HREF="../../../../com/sleepycat/bind/serial/ClassCatalog.html#getClassLoader()"><CODE>ClassCatalog.getClassLoader()</CODE></A>, if it returns a
non-null value. If <A HREF="../../../../com/sleepycat/bind/serial/ClassCatalog.html#getClassLoader()"><CODE>ClassCatalog.getClassLoader()</CODE></A> returns null,
then <code>Thread.currentThread().getContextClassLoader()</code> is
returned.
<p>This method may be overridden to return a dynamically determined
class loader. For example, <code>getBaseClass().getClassLoader()</code>
could be called to use the class loader for the base class, assuming
that a base class has been specified.</p>
<p>If this method returns null, a default class loader will be used as
determined by the <code>java.io.ObjectInputStream.resolveClass</code>
method.</p>
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="entryToObject(com.sleepycat.db.DatabaseEntry)"><!-- --></A><H3>
entryToObject</H3>
<PRE>
public <A HREF="../../../../com/sleepycat/bind/serial/SerialBinding.html" title="type parameter in SerialBinding">E</A> <B>entryToObject</B>(<A HREF="../../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> entry)</PRE>
<DL>
<DD>Deserialize an object from an entry buffer. May only be called for data
that was serialized using <A HREF="../../../../com/sleepycat/bind/serial/SerialBinding.html#objectToEntry(E, com.sleepycat.db.DatabaseEntry)"><CODE>objectToEntry(E, com.sleepycat.db.DatabaseEntry)</CODE></A>, since the fixed
serialization header is assumed to not be included in the input data.
<A HREF="../../../../com/sleepycat/bind/serial/SerialInput.html" title="class in com.sleepycat.bind.serial"><CODE>SerialInput</CODE></A> is used to deserialize the object.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../com/sleepycat/bind/EntryBinding.html#entryToObject(com.sleepycat.db.DatabaseEntry)">entryToObject</A></CODE> in interface <CODE><A HREF="../../../../com/sleepycat/bind/EntryBinding.html" title="interface in com.sleepycat.bind">EntryBinding</A><<A HREF="../../../../com/sleepycat/bind/serial/SerialBinding.html" title="type parameter in SerialBinding">E</A>></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>entry</CODE> - is the input serialized entry.
<DT><B>Returns:</B><DD>the output deserialized object.</DL>
</DD>
</DL>
<HR>
<A NAME="objectToEntry(java.lang.Object,com.sleepycat.db.DatabaseEntry)"><!-- --></A><A NAME="objectToEntry(E, com.sleepycat.db.DatabaseEntry)"><!-- --></A><H3>
objectToEntry</H3>
<PRE>
public void <B>objectToEntry</B>(<A HREF="../../../../com/sleepycat/bind/serial/SerialBinding.html" title="type parameter in SerialBinding">E</A> object,
<A HREF="../../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> entry)</PRE>
<DL>
<DD>Serialize an object into an entry buffer. The fixed serialization
header is not included in the output data to save space, and therefore
to deserialize the data the complementary <A HREF="../../../../com/sleepycat/bind/serial/SerialBinding.html#entryToObject(com.sleepycat.db.DatabaseEntry)"><CODE>entryToObject(com.sleepycat.db.DatabaseEntry)</CODE></A> method
must be used. <A HREF="../../../../com/sleepycat/bind/serial/SerialOutput.html" title="class in com.sleepycat.bind.serial"><CODE>SerialOutput</CODE></A> is used to serialize the object.
<p>Note that this method sets the DatabaseEntry offset property to a
non-zero value and the size property to a value less than the length of
the byte array.</p>
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../com/sleepycat/bind/EntryBinding.html#objectToEntry(E, com.sleepycat.db.DatabaseEntry)">objectToEntry</A></CODE> in interface <CODE><A HREF="../../../../com/sleepycat/bind/EntryBinding.html" title="interface in com.sleepycat.bind">EntryBinding</A><<A HREF="../../../../com/sleepycat/bind/serial/SerialBinding.html" title="type parameter in SerialBinding">E</A>></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>object</CODE> - is the input deserialized object.<DD><CODE>entry</CODE> - is the output serialized entry.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang">IllegalArgumentException</A></CODE> - if the object is not an instance of the
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non-null base class was specified.</DL>
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