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 <FONT SIZE="-1">
 org.apache.openjpa.slice</FONT>
 <BR>
 Interface DistributionPolicy</H2>
 <DL>
 <DT><B>All Known Implementing Classes:</B> <DD><A HREF="../../../../org/apache/openjpa/slice/DistributionPolicy.Default.html" title="class in org.apache.openjpa.slice">DistributionPolicy.Default</A></DD>
 </DL>
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 <DL>
 <DT><PRE>public interface <B>DistributionPolicy</B></DL>
 </PRE>

 <P>
 Policy to select one of the physical databases referred as <em>slice</em>
  in which a given persistent instance will be stored.

  The user application is required to implement this interface. Slice will
  invoke the single method of this interface to determine the target slice for
  a newly persistent or a detached instance being merged.
 <P>

 <P>
 <DL>
 <DT><B>Author:</B></DT>
   <DD>Pinaki Poddar</DD>
 </DL>
 <HR>

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 <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
 <CODE>static&nbsp;class</CODE></FONT></TD>
 <TD><CODE><B><A HREF="../../../../org/apache/openjpa/slice/DistributionPolicy.Default.html" title="class in org.apache.openjpa.slice">DistributionPolicy.Default</A></B></CODE>

 <BR>
 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Implements a default distribution policy to store the given
  instance to a randomly selected available slice.</TD>
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 <CODE>&nbsp;<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD>
 <TD><CODE><B><A HREF="../../../../org/apache/openjpa/slice/DistributionPolicy.html#distribute(java.lang.Object, java.util.List, java.lang.Object)">distribute</A></B>(<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A>&nbsp;pc,
            <A HREF="http://download.oracle.com/javase/6/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</A>&lt;<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&gt;&nbsp;slices,
            <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A>&nbsp;context)</CODE>

 <BR>
 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Gets the name of the target slice where the given newly persistent or
  the detached, to-be-merged instance will be stored.</TD>
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 <A NAME="distribute(java.lang.Object, java.util.List, java.lang.Object)"><!-- --></A><H3>
 distribute</H3>
 <PRE>
 <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>distribute</B>(<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A>&nbsp;pc,
                   <A HREF="http://download.oracle.com/javase/6/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</A>&lt;<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&gt;&nbsp;slices,
                   <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A>&nbsp;context)</PRE>
 <DL>
 <DD>Gets the name of the target slice where the given newly persistent or
  the detached, to-be-merged instance will be stored.
  <br>
  If the current state of the given instance is sufficient to determine
  the target slice, return null. In that case, the runtime will callback
  this method again before the instance being flushed to the datastore.
  By then, the policy <em>must</em> be able to determine the target slice.
 <P>
 <DD><DL>
 <DT><B>Parameters:</B><DD><CODE>pc</CODE> - The newly persistent or to-be-merged object.<DD><CODE>slices</CODE> - list of names of the active slices. The ordering of
  the list is either explicit <code>openjpa.slice.Names</code> property
  or implicit i.e. alphabetic order of available identifiers if
  <code>openjpa.slice.Names</code> is unspecified.<DD><CODE>context</CODE> - the generic persistence context managing the given
  instance.
 <DT><B>Returns:</B><DD>identifier of the slice. This name must match one of the
  given slice names.<DT><B>See Also:</B><DD><A HREF="../../../../org/apache/openjpa/slice/DistributedConfiguration.html#getActiveSliceNames()"><CODE>DistributedConfiguration.getActiveSliceNames()</CODE></A></DL>
 </DD>
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	org.apache.openjpa.slice</FONT>
	<BR>
	Interface DistributionPolicy</H2>
	<DL>
	<DT><B>All Known Implementing Classes:</B> <DD><A HREF="../../../../org/apache/openjpa/slice/DistributionPolicy.Default.html" title="class in org.apache.openjpa.slice">DistributionPolicy.Default</A></DD>
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	<DT><PRE>public interface <B>DistributionPolicy</B></DL>
	</PRE>

	<P>
	Policy to select one of the physical databases referred as <em>slice</em>
	in which a given persistent instance will be stored.

	The user application is required to implement this interface. Slice will
	invoke the single method of this interface to determine the target slice for
	a newly persistent or a detached instance being merged.
	<P>

	<P>
	<DL>
	<DT><B>Author:</B></DT>
	<DD>Pinaki Poddar</DD>
	</DL>
	<HR>

	<P>
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	<CODE>static class</CODE></FONT></TD>
	<TD><CODE><B><A HREF="../../../../org/apache/openjpa/slice/DistributionPolicy.Default.html" title="class in org.apache.openjpa.slice">DistributionPolicy.Default</A></B></CODE>

	<BR>
	Implements a default distribution policy to store the given
	instance to a randomly selected available slice.</TD>
	</TR>
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	<CODE> <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD>
	<TD><CODE><B><A HREF="../../../../org/apache/openjpa/slice/DistributionPolicy.html#distribute(java.lang.Object, java.util.List, java.lang.Object)">distribute</A></B>(<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A> pc,
	<A HREF="http://download.oracle.com/javase/6/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</A><<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>> slices,
	<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A> context)</CODE>

	<BR>
	Gets the name of the target slice where the given newly persistent or
	the detached, to-be-merged instance will be stored.</TD>
	</TR>
	</TABLE>

	<P>

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	<A NAME="distribute(java.lang.Object, java.util.List, java.lang.Object)"><!-- --></A><H3>
	distribute</H3>
	<PRE>
	<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>distribute</B>(<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A> pc,
	<A HREF="http://download.oracle.com/javase/6/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</A><<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>> slices,
	<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A> context)</PRE>
	<DL>
	<DD>Gets the name of the target slice where the given newly persistent or
	the detached, to-be-merged instance will be stored.
	<br>
	If the current state of the given instance is sufficient to determine
	the target slice, return null. In that case, the runtime will callback
	this method again before the instance being flushed to the datastore.
	By then, the policy <em>must</em> be able to determine the target slice.
	<P>
	<DD><DL>
	<DT><B>Parameters:</B><DD><CODE>pc</CODE> - The newly persistent or to-be-merged object.<DD><CODE>slices</CODE> - list of names of the active slices. The ordering of
	the list is either explicit <code>openjpa.slice.Names</code> property
	or implicit i.e. alphabetic order of available identifiers if
	<code>openjpa.slice.Names</code> is unspecified.<DD><CODE>context</CODE> - the generic persistence context managing the given
	instance.
	<DT><B>Returns:</B><DD>identifier of the slice. This name must match one of the
	given slice names.<DT><B>See Also:</B><DD><A HREF="../../../../org/apache/openjpa/slice/DistributedConfiguration.html#getActiveSliceNames()"><CODE>DistributedConfiguration.getActiveSliceNames()</CODE></A></DL>
	</DD>
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