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TupleSerialKeyCreator (Oracle - Berkeley DB Java API)
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com.sleepycat.bind.serial</FONT>
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Class TupleSerialKeyCreator<D></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/tuple/TupleBase.html" title="class in com.sleepycat.bind.tuple">com.sleepycat.bind.tuple.TupleBase</A>
<IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>com.sleepycat.bind.serial.TupleSerialKeyCreator<D></B>
</PRE>
<DL>
<DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../com/sleepycat/db/ForeignKeyNullifier.html" title="interface in com.sleepycat.db">ForeignKeyNullifier</A>, <A HREF="../../../../com/sleepycat/db/SecondaryKeyCreator.html" title="interface in com.sleepycat.db">SecondaryKeyCreator</A></DD>
</DL>
<DL>
<DT><B>Direct Known Subclasses:</B> <DD><A HREF="../../../../com/sleepycat/bind/serial/TupleSerialMarshalledKeyCreator.html" title="class in com.sleepycat.bind.serial">TupleSerialMarshalledKeyCreator</A></DD>
</DL>
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<DT><PRE>public abstract class <B>TupleSerialKeyCreator<D></B><DT>extends <A HREF="../../../../com/sleepycat/bind/tuple/TupleBase.html" title="class in com.sleepycat.bind.tuple">TupleBase</A><DT>implements <A HREF="../../../../com/sleepycat/db/SecondaryKeyCreator.html" title="interface in com.sleepycat.db">SecondaryKeyCreator</A>, <A HREF="../../../../com/sleepycat/db/ForeignKeyNullifier.html" title="interface in com.sleepycat.db">ForeignKeyNullifier</A></DL>
</PRE>
<P>
A abstract key creator that uses a tuple key and a serial data entry. This
class takes care of serializing and deserializing the data entry, and
converting the key entry to/from <A HREF="../../../../com/sleepycat/bind/tuple/TupleInput.html" title="class in com.sleepycat.bind.tuple"><CODE>TupleInput</CODE></A> and <A HREF="../../../../com/sleepycat/bind/tuple/TupleOutput.html" title="class in com.sleepycat.bind.tuple"><CODE>TupleOutput</CODE></A>
objects.
The following abstract method must be implemented by a concrete subclass
to create the index key using these objects
<ul>
<li> <A HREF="../../../../com/sleepycat/bind/serial/TupleSerialKeyCreator.html#createSecondaryKey(com.sleepycat.bind.tuple.TupleInput, D, com.sleepycat.bind.tuple.TupleOutput)"><CODE>createSecondaryKey(TupleInput,Object,TupleOutput)</CODE></A> </li>
</ul>
<p>If <A HREF="../../../../com/sleepycat/db/ForeignKeyDeleteAction.html#NULLIFY"><CODE>ForeignKeyDeleteAction.NULLIFY</CODE></A> was
specified when opening the secondary database, the following method must be
overridden to nullify the foreign index key. If NULLIFY was not specified,
this method need not be overridden.</p>
<ul>
<li> <A HREF="../../../../com/sleepycat/bind/serial/TupleSerialKeyCreator.html#nullifyForeignKey(D)"><CODE>nullifyForeignKey(Object)</CODE></A> </li>
</ul>
<P>
<P>
<DL>
<DT><B>See Also:</B><DD><a href="SerialBinding.html#evolution">Class Evolution</a></DL>
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<CODE>protected <A HREF="../../../../com/sleepycat/bind/serial/SerialBinding.html" title="class in com.sleepycat.bind.serial">SerialBinding</A><<A HREF="../../../../com/sleepycat/bind/serial/TupleSerialKeyCreator.html" title="type parameter in TupleSerialKeyCreator">D</A>></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/bind/serial/TupleSerialKeyCreator.html#dataBinding">dataBinding</A></B></CODE>
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<TD><CODE><B><A HREF="../../../../com/sleepycat/bind/serial/TupleSerialKeyCreator.html#TupleSerialKeyCreator(com.sleepycat.bind.serial.ClassCatalog, java.lang.Class)">TupleSerialKeyCreator</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/TupleSerialKeyCreator.html" title="type parameter in TupleSerialKeyCreator">D</A>> dataClass)</CODE>
<BR>
Creates a tuple-serial key creator.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><B><A HREF="../../../../com/sleepycat/bind/serial/TupleSerialKeyCreator.html#TupleSerialKeyCreator(com.sleepycat.bind.serial.SerialBinding)">TupleSerialKeyCreator</A></B>(<A HREF="../../../../com/sleepycat/bind/serial/SerialBinding.html" title="class in com.sleepycat.bind.serial">SerialBinding</A><<A HREF="../../../../com/sleepycat/bind/serial/TupleSerialKeyCreator.html" title="type parameter in TupleSerialKeyCreator">D</A>> dataBinding)</CODE>
<BR>
Creates a tuple-serial key creator.</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/bind/serial/TupleSerialKeyCreator.html#createSecondaryKey(com.sleepycat.db.SecondaryDatabase, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.DatabaseEntry)">createSecondaryKey</A></B>(<A HREF="../../../../com/sleepycat/db/SecondaryDatabase.html" title="class in com.sleepycat.db">SecondaryDatabase</A> db,
<A HREF="../../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> primaryKeyEntry,
<A HREF="../../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> dataEntry,
<A HREF="../../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> indexKeyEntry)</CODE>
<BR>
Creates a secondary key entry, given a primary key and data entry.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>abstract boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/bind/serial/TupleSerialKeyCreator.html#createSecondaryKey(com.sleepycat.bind.tuple.TupleInput, D, com.sleepycat.bind.tuple.TupleOutput)">createSecondaryKey</A></B>(<A HREF="../../../../com/sleepycat/bind/tuple/TupleInput.html" title="class in com.sleepycat.bind.tuple">TupleInput</A> primaryKeyInput,
<A HREF="../../../../com/sleepycat/bind/serial/TupleSerialKeyCreator.html" title="type parameter in TupleSerialKeyCreator">D</A> dataInput,
<A HREF="../../../../com/sleepycat/bind/tuple/TupleOutput.html" title="class in com.sleepycat.bind.tuple">TupleOutput</A> indexKeyOutput)</CODE>
<BR>
Creates the index key entry from primary key tuple entry and
deserialized data entry.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../../com/sleepycat/bind/serial/TupleSerialKeyCreator.html" title="type parameter in TupleSerialKeyCreator">D</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/bind/serial/TupleSerialKeyCreator.html#nullifyForeignKey(D)">nullifyForeignKey</A></B>(<A HREF="../../../../com/sleepycat/bind/serial/TupleSerialKeyCreator.html" title="type parameter in TupleSerialKeyCreator">D</A> data)</CODE>
<BR>
Clears the index key in the deserialized data entry.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/bind/serial/TupleSerialKeyCreator.html#nullifyForeignKey(com.sleepycat.db.SecondaryDatabase, com.sleepycat.db.DatabaseEntry)">nullifyForeignKey</A></B>(<A HREF="../../../../com/sleepycat/db/SecondaryDatabase.html" title="class in com.sleepycat.db">SecondaryDatabase</A> db,
<A HREF="../../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> dataEntry)</CODE>
<BR>
Sets the foreign key reference to null in the datum of the primary
database.</TD>
</TR>
</TABLE>
<A NAME="methods_inherited_from_class_com.sleepycat.bind.tuple.TupleBase"><!-- --></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.tuple.<A HREF="../../../../com/sleepycat/bind/tuple/TupleBase.html" title="class in com.sleepycat.bind.tuple">TupleBase</A></B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../../com/sleepycat/bind/tuple/TupleBase.html#entryToInput(com.sleepycat.db.DatabaseEntry)">entryToInput</A>, <A HREF="../../../../com/sleepycat/bind/tuple/TupleBase.html#getTupleBufferSize()">getTupleBufferSize</A>, <A HREF="../../../../com/sleepycat/bind/tuple/TupleBase.html#getTupleOutput(E)">getTupleOutput</A>, <A HREF="../../../../com/sleepycat/bind/tuple/TupleBase.html#inputToEntry(com.sleepycat.bind.tuple.TupleInput, com.sleepycat.db.DatabaseEntry)">inputToEntry</A>, <A HREF="../../../../com/sleepycat/bind/tuple/TupleBase.html#newOutput()">newOutput</A>, <A HREF="../../../../com/sleepycat/bind/tuple/TupleBase.html#newOutput(byte[])">newOutput</A>, <A HREF="../../../../com/sleepycat/bind/tuple/TupleBase.html#outputToEntry(com.sleepycat.bind.tuple.TupleOutput, com.sleepycat.db.DatabaseEntry)">outputToEntry</A>, <A HREF="../../../../com/sleepycat/bind/tuple/TupleBase.html#setTupleBufferSize(int)">setTupleBufferSize</A></CODE></TD>
</TR>
</TABLE>
<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>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<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>
</TABLE>
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<A NAME="dataBinding"><!-- --></A><H3>
dataBinding</H3>
<PRE>
protected <A HREF="../../../../com/sleepycat/bind/serial/SerialBinding.html" title="class in com.sleepycat.bind.serial">SerialBinding</A><<A HREF="../../../../com/sleepycat/bind/serial/TupleSerialKeyCreator.html" title="type parameter in TupleSerialKeyCreator">D</A>> <B>dataBinding</B></PRE>
<DL>
<DL>
</DL>
</DL>
<!-- ========= CONSTRUCTOR DETAIL ======== -->
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<B>Constructor Detail</B></FONT></TH>
</TR>
</TABLE>
<A NAME="TupleSerialKeyCreator(com.sleepycat.bind.serial.ClassCatalog, java.lang.Class)"><!-- --></A><H3>
TupleSerialKeyCreator</H3>
<PRE>
public <B>TupleSerialKeyCreator</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/TupleSerialKeyCreator.html" title="type parameter in TupleSerialKeyCreator">D</A>> dataClass)</PRE>
<DL>
<DD>Creates a tuple-serial key creator.
<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>dataClass</CODE> - is the data base class.</DL>
</DL>
<HR>
<A NAME="TupleSerialKeyCreator(com.sleepycat.bind.serial.SerialBinding)"><!-- --></A><H3>
TupleSerialKeyCreator</H3>
<PRE>
public <B>TupleSerialKeyCreator</B>(<A HREF="../../../../com/sleepycat/bind/serial/SerialBinding.html" title="class in com.sleepycat.bind.serial">SerialBinding</A><<A HREF="../../../../com/sleepycat/bind/serial/TupleSerialKeyCreator.html" title="type parameter in TupleSerialKeyCreator">D</A>> dataBinding)</PRE>
<DL>
<DD>Creates a tuple-serial key creator.
<P>
<DL>
<DT><B>Parameters:</B><DD><CODE>dataBinding</CODE> - is the data binding.</DL>
</DL>
<!-- ============ METHOD DETAIL ========== -->
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<B>Method Detail</B></FONT></TH>
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<A NAME="createSecondaryKey(com.sleepycat.db.SecondaryDatabase, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.DatabaseEntry)"><!-- --></A><H3>
createSecondaryKey</H3>
<PRE>
public boolean <B>createSecondaryKey</B>(<A HREF="../../../../com/sleepycat/db/SecondaryDatabase.html" title="class in com.sleepycat.db">SecondaryDatabase</A> db,
<A HREF="../../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> primaryKeyEntry,
<A HREF="../../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> dataEntry,
<A HREF="../../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> indexKeyEntry)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../com/sleepycat/db/SecondaryKeyCreator.html#createSecondaryKey(com.sleepycat.db.SecondaryDatabase, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.DatabaseEntry)">SecondaryKeyCreator</A></CODE></B></DD>
<DD>Creates a secondary key entry, given a primary key and data entry.
<p>
A secondary key may be derived from the primary key, primary data, or a
combination of the primary key and data. For secondary keys that are
optional, the key creator method may return false and the key/data pair
will not be indexed. To ensure the integrity of a secondary database the
key creator method must always return the same result for a given set of
input parameters.
<p>
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../com/sleepycat/db/SecondaryKeyCreator.html#createSecondaryKey(com.sleepycat.db.SecondaryDatabase, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.DatabaseEntry)">createSecondaryKey</A></CODE> in interface <CODE><A HREF="../../../../com/sleepycat/db/SecondaryKeyCreator.html" title="interface in com.sleepycat.db">SecondaryKeyCreator</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>db</CODE> - the database to which the secondary key will be added.
This parameter is passed for informational purposes but is not commonly
used.
<p><DD><CODE>primaryKeyEntry</CODE> - the primary key entry. This parameter must not be modified
by this method.
<p><DD><CODE>dataEntry</CODE> - the primary data entry. This parameter must not be modified
by this method.
<p><DD><CODE>indexKeyEntry</CODE> - the secondary key created by this method.
<p>
<DT><B>Returns:</B><DD>true if a key was created, or false to indicate that the key is
not present.
<p></DL>
</DD>
</DL>
<HR>
<A NAME="nullifyForeignKey(com.sleepycat.db.SecondaryDatabase, com.sleepycat.db.DatabaseEntry)"><!-- --></A><H3>
nullifyForeignKey</H3>
<PRE>
public boolean <B>nullifyForeignKey</B>(<A HREF="../../../../com/sleepycat/db/SecondaryDatabase.html" title="class in com.sleepycat.db">SecondaryDatabase</A> db,
<A HREF="../../../../com/sleepycat/db/DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</A> dataEntry)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../com/sleepycat/db/ForeignKeyNullifier.html#nullifyForeignKey(com.sleepycat.db.SecondaryDatabase, com.sleepycat.db.DatabaseEntry)">ForeignKeyNullifier</A></CODE></B></DD>
<DD>Sets the foreign key reference to null in the datum of the primary
database.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../com/sleepycat/db/ForeignKeyNullifier.html#nullifyForeignKey(com.sleepycat.db.SecondaryDatabase, com.sleepycat.db.DatabaseEntry)">nullifyForeignKey</A></CODE> in interface <CODE><A HREF="../../../../com/sleepycat/db/ForeignKeyNullifier.html" title="interface in com.sleepycat.db">ForeignKeyNullifier</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>db</CODE> - the database in which the foreign key integrity
constraint is defined. This parameter is passed for informational
purposes but is not commonly used.<DD><CODE>dataEntry</CODE> - the existing primary datum in which the foreign key
reference should be set to null. This parameter should be updated by
this method if it returns true.
<DT><B>Returns:</B><DD>true if the datum was modified, or false to indicate that the
key is not present.</DL>
</DD>
</DL>
<HR>
<A NAME="createSecondaryKey(com.sleepycat.bind.tuple.TupleInput,java.lang.Object,com.sleepycat.bind.tuple.TupleOutput)"><!-- --></A><A NAME="createSecondaryKey(com.sleepycat.bind.tuple.TupleInput, D, com.sleepycat.bind.tuple.TupleOutput)"><!-- --></A><H3>
createSecondaryKey</H3>
<PRE>
public abstract boolean <B>createSecondaryKey</B>(<A HREF="../../../../com/sleepycat/bind/tuple/TupleInput.html" title="class in com.sleepycat.bind.tuple">TupleInput</A> primaryKeyInput,
<A HREF="../../../../com/sleepycat/bind/serial/TupleSerialKeyCreator.html" title="type parameter in TupleSerialKeyCreator">D</A> dataInput,
<A HREF="../../../../com/sleepycat/bind/tuple/TupleOutput.html" title="class in com.sleepycat.bind.tuple">TupleOutput</A> indexKeyOutput)</PRE>
<DL>
<DD>Creates the index key entry from primary key tuple entry and
deserialized data entry.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>primaryKeyInput</CODE> - is the <A HREF="../../../../com/sleepycat/bind/tuple/TupleInput.html" title="class in com.sleepycat.bind.tuple"><CODE>TupleInput</CODE></A> for the primary key
entry, or null if no primary key entry is used to construct the index
key.<DD><CODE>dataInput</CODE> - is the deserialized data entry, or null if no data
entry is used to construct the index key.<DD><CODE>indexKeyOutput</CODE> - is the destination index key tuple. For index
keys which are optionally present, no tuple entry should be output to
indicate that the key is not present or null.
<DT><B>Returns:</B><DD>true if a key was created, or false to indicate that the key is
not present.</DL>
</DD>
</DL>
<HR>
<A NAME="nullifyForeignKey(java.lang.Object)"><!-- --></A><A NAME="nullifyForeignKey(D)"><!-- --></A><H3>
nullifyForeignKey</H3>
<PRE>
public <A HREF="../../../../com/sleepycat/bind/serial/TupleSerialKeyCreator.html" title="type parameter in TupleSerialKeyCreator">D</A> <B>nullifyForeignKey</B>(<A HREF="../../../../com/sleepycat/bind/serial/TupleSerialKeyCreator.html" title="type parameter in TupleSerialKeyCreator">D</A> data)</PRE>
<DL>
<DD>Clears the index key in the deserialized data entry.
<p>On entry the data parameter contains the index key to be cleared. It
should be changed by this method such that <A HREF="../../../../com/sleepycat/bind/serial/TupleSerialKeyCreator.html#createSecondaryKey(com.sleepycat.db.SecondaryDatabase, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.DatabaseEntry)"><CODE>createSecondaryKey(com.sleepycat.db.SecondaryDatabase, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.DatabaseEntry, com.sleepycat.db.DatabaseEntry)</CODE></A>
will return false. Other fields in the data object should remain
unchanged.</p>
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>data</CODE> - is the source and destination deserialized data
entry.
<DT><B>Returns:</B><DD>the destination data object, or null to indicate that the
key is not present and no change is necessary. The data returned may
be the same object passed as the data parameter or a newly created
object.</DL>
</DD>
</DL>
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