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ForeignKeyDeleteAction (Oracle - Berkeley DB Java API)
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com.sleepycat.db</FONT>
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Class ForeignKeyDeleteAction</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 "><B>com.sleepycat.db.ForeignKeyDeleteAction</B>
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<DT><PRE>public class <B>ForeignKeyDeleteAction</B><DT>extends <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></DL>
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<P>
The action taken when a referenced record in the foreign key database is
deleted.
<p>The delete action applies to a secondary database that is configured to
have a foreign key integrity constraint. The delete action is specified by
calling <A HREF="../../../com/sleepycat/db/SecondaryConfig.html#setForeignKeyDeleteAction(com.sleepycat.db.ForeignKeyDeleteAction)"><CODE>SecondaryConfig.setForeignKeyDeleteAction(com.sleepycat.db.ForeignKeyDeleteAction)</CODE></A>.</p>
<p>When a record in the foreign key database is deleted, it is checked to
see if it is referenced by any record in the associated secondary database.
If the key is referenced, the delete action is applied. By default, the
delete action is <A HREF="../../../com/sleepycat/db/ForeignKeyDeleteAction.html#ABORT"><CODE>ABORT</CODE></A>.</p>
<P>
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<DL>
<DT><B>See Also:</B><DD><A HREF="../../../com/sleepycat/db/SecondaryConfig.html" title="class in com.sleepycat.db"><CODE>SecondaryConfig</CODE></A></DL>
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<CODE>static <A HREF="../../../com/sleepycat/db/ForeignKeyDeleteAction.html" title="class in com.sleepycat.db">ForeignKeyDeleteAction</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/db/ForeignKeyDeleteAction.html#ABORT">ABORT</A></B></CODE>
<BR>
When a referenced record in the foreign key database is deleted, abort
the transaction by throwing a <A HREF="../../../com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db"><CODE>DatabaseException</CODE></A>.</TD>
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<CODE>static <A HREF="../../../com/sleepycat/db/ForeignKeyDeleteAction.html" title="class in com.sleepycat.db">ForeignKeyDeleteAction</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/db/ForeignKeyDeleteAction.html#CASCADE">CASCADE</A></B></CODE>
<BR>
When a referenced record in the foreign key database is deleted, delete
the primary database record that references it.</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static <A HREF="../../../com/sleepycat/db/ForeignKeyDeleteAction.html" title="class in com.sleepycat.db">ForeignKeyDeleteAction</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/sleepycat/db/ForeignKeyDeleteAction.html#NULLIFY">NULLIFY</A></B></CODE>
<BR>
When a referenced record in the foreign key database is deleted, set the
reference to null in the primary database record that references it,
thereby deleting the secondary key.</TD>
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<TD><CODE><B><A HREF="../../../com/sleepycat/db/ForeignKeyDeleteAction.html#toString()">toString</A></B>()</CODE>
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<A NAME="ABORT"><!-- --></A><H3>
ABORT</H3>
<PRE>
public static <A HREF="../../../com/sleepycat/db/ForeignKeyDeleteAction.html" title="class in com.sleepycat.db">ForeignKeyDeleteAction</A> <B>ABORT</B></PRE>
<DL>
<DD>When a referenced record in the foreign key database is deleted, abort
the transaction by throwing a <A HREF="../../../com/sleepycat/db/DatabaseException.html" title="class in com.sleepycat.db"><CODE>DatabaseException</CODE></A>.
<P>
<DL>
</DL>
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<A NAME="CASCADE"><!-- --></A><H3>
CASCADE</H3>
<PRE>
public static <A HREF="../../../com/sleepycat/db/ForeignKeyDeleteAction.html" title="class in com.sleepycat.db">ForeignKeyDeleteAction</A> <B>CASCADE</B></PRE>
<DL>
<DD>When a referenced record in the foreign key database is deleted, delete
the primary database record that references it.
<P>
<DL>
</DL>
</DL>
<HR>
<A NAME="NULLIFY"><!-- --></A><H3>
NULLIFY</H3>
<PRE>
public static <A HREF="../../../com/sleepycat/db/ForeignKeyDeleteAction.html" title="class in com.sleepycat.db">ForeignKeyDeleteAction</A> <B>NULLIFY</B></PRE>
<DL>
<DD>When a referenced record in the foreign key database is deleted, set the
reference to null in the primary database record that references it,
thereby deleting the secondary key. @see ForeignKeyNullifier @see
ForeignMultiKeyNullifier
<P>
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<A NAME="toString()"><!-- --></A><H3>
toString</H3>
<PRE>
public <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>toString</B>()</PRE>
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<DD><DL>
<DT><B>Overrides:</B><DD><CODE><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></CODE> in class <CODE><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></CODE></DL>
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