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SliceImplHelper (OpenJPA Parent POM 2.1.1 API)
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org.apache.openjpa.slice</FONT>
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Class SliceImplHelper</H2>
<PRE>
<A HREF="http://java.sun.com/j2se/6/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>org.apache.openjpa.slice.SliceImplHelper</B>
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<DT><PRE>public class <B>SliceImplHelper</B><DT>extends <A HREF="http://java.sun.com/j2se/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></DL>
</PRE>
<P>
Utility methods to determine the target slices for a persistence capable
instance by calling back to user-specified distribution policy.
<P>
<P>
<DL>
<DT><B>Author:</B></DT>
<DD>Pinaki Poddar</DD>
</DL>
<HR>
<P>
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<TD><CODE><B><A HREF="../../../../org/apache/openjpa/slice/SliceImplHelper.html#SliceImplHelper()">SliceImplHelper</A></B>()</CODE>
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;<A HREF="../../../../org/apache/openjpa/slice/SliceInfo.html" title="class in org.apache.openjpa.slice">SliceInfo</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/openjpa/slice/SliceImplHelper.html#getSliceInfo(org.apache.openjpa.kernel.OpenJPAStateManager)">getSliceInfo</A></B>(<A HREF="../../../../org/apache/openjpa/kernel/OpenJPAStateManager.html" title="interface in org.apache.openjpa.kernel">OpenJPAStateManager</A>&nbsp;sm)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Gets the assigned slice information, if any, from the given StateManager.</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;<A HREF="../../../../org/apache/openjpa/slice/SliceInfo.html" title="class in org.apache.openjpa.slice">SliceInfo</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/openjpa/slice/SliceImplHelper.html#getSlicesByPolicy(java.lang.Object, org.apache.openjpa.slice.DistributedConfiguration, java.lang.Object)">getSlicesByPolicy</A></B>(<A HREF="http://java.sun.com/j2se/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A>&nbsp;pc,
<A HREF="../../../../org/apache/openjpa/slice/DistributedConfiguration.html" title="interface in org.apache.openjpa.slice">DistributedConfiguration</A>&nbsp;conf,
<A HREF="http://java.sun.com/j2se/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A>&nbsp;ctx)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Gets the target slices by calling user-specified <A HREF="../../../../org/apache/openjpa/slice/DistributionPolicy.html" title="interface in org.apache.openjpa.slice"><CODE>DistributionPolicy</CODE></A> or <A HREF="../../../../org/apache/openjpa/slice/ReplicationPolicy.html" title="interface in org.apache.openjpa.slice"><CODE>ReplicationPolicy</CODE></A>
depending on whether the given instance is <A HREF="../../../../org/apache/openjpa/slice/DistributedConfiguration.html#isReplicated(java.lang.Class)"><CODE>replicated</CODE></A>.</TD>
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<CODE>static&nbsp;<A HREF="../../../../org/apache/openjpa/slice/SliceInfo.html" title="class in org.apache.openjpa.slice">SliceInfo</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/openjpa/slice/SliceImplHelper.html#getSlicesByPolicy(org.apache.openjpa.kernel.OpenJPAStateManager, org.apache.openjpa.slice.DistributedConfiguration, java.lang.Object)">getSlicesByPolicy</A></B>(<A HREF="../../../../org/apache/openjpa/kernel/OpenJPAStateManager.html" title="interface in org.apache.openjpa.kernel">OpenJPAStateManager</A>&nbsp;sm,
<A HREF="../../../../org/apache/openjpa/slice/DistributedConfiguration.html" title="interface in org.apache.openjpa.slice">DistributedConfiguration</A>&nbsp;conf,
<A HREF="http://java.sun.com/j2se/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A>&nbsp;ctx)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Gets the target slices for the given StateManager.</TD>
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<CODE>static&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/openjpa/slice/SliceImplHelper.html#isReplicated(java.lang.Object, org.apache.openjpa.slice.DistributedConfiguration)">isReplicated</A></B>(<A HREF="http://java.sun.com/j2se/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A>&nbsp;pc,
<A HREF="../../../../org/apache/openjpa/slice/DistributedConfiguration.html" title="interface in org.apache.openjpa.slice">DistributedConfiguration</A>&nbsp;conf)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Affirms if the given instance be replicated to multiple slices.</TD>
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<CODE>static&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/openjpa/slice/SliceImplHelper.html#isSliceAssigned(org.apache.openjpa.kernel.OpenJPAStateManager)">isSliceAssigned</A></B>(<A HREF="../../../../org/apache/openjpa/kernel/OpenJPAStateManager.html" title="interface in org.apache.openjpa.kernel">OpenJPAStateManager</A>&nbsp;sm)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Affirms if the given StateManager has an assigned slice.</TD>
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<A NAME="SliceImplHelper()"><!-- --></A><H3>
SliceImplHelper</H3>
<PRE>
public <B>SliceImplHelper</B>()</PRE>
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<A NAME="getSlicesByPolicy(java.lang.Object, org.apache.openjpa.slice.DistributedConfiguration, java.lang.Object)"><!-- --></A><H3>
getSlicesByPolicy</H3>
<PRE>
public static <A HREF="../../../../org/apache/openjpa/slice/SliceInfo.html" title="class in org.apache.openjpa.slice">SliceInfo</A> <B>getSlicesByPolicy</B>(<A HREF="http://java.sun.com/j2se/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A>&nbsp;pc,
<A HREF="../../../../org/apache/openjpa/slice/DistributedConfiguration.html" title="interface in org.apache.openjpa.slice">DistributedConfiguration</A>&nbsp;conf,
<A HREF="http://java.sun.com/j2se/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A>&nbsp;ctx)</PRE>
<DL>
<DD>Gets the target slices by calling user-specified <A HREF="../../../../org/apache/openjpa/slice/DistributionPolicy.html" title="interface in org.apache.openjpa.slice"><CODE>DistributionPolicy</CODE></A> or <A HREF="../../../../org/apache/openjpa/slice/ReplicationPolicy.html" title="interface in org.apache.openjpa.slice"><CODE>ReplicationPolicy</CODE></A>
depending on whether the given instance is <A HREF="../../../../org/apache/openjpa/slice/DistributedConfiguration.html#isReplicated(java.lang.Class)"><CODE>replicated</CODE></A>.
The policy is invoked when an instance enters the managed life cycle. However, if the instance
being persisted is distributed to a target slice that is <em>not</em> determinable by its own basic attributes,
but on its associated instance then those association may not have been initialized at the point of entry.
In such case, the policy may return null. However, when a target slice may not be determinable at the
entry to managed life cycle, a target slice must be determinable by the time an instance is flushed.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>pc</CODE> - the managed instance whose target slice is to be determined.<DD><CODE>conf</CODE> - to supply the distribution policy<DD><CODE>ctx</CODE> - the (opaque) context of invocation. No semantics is currently associated.
<DT><B>Returns:</B><DD>information about the target slice for the given instance. Can be null if the policy
can not determine the target slice(s) based on the current state of the instance.</DL>
</DD>
</DL>
<HR>
<A NAME="getSlicesByPolicy(org.apache.openjpa.kernel.OpenJPAStateManager, org.apache.openjpa.slice.DistributedConfiguration, java.lang.Object)"><!-- --></A><H3>
getSlicesByPolicy</H3>
<PRE>
public static <A HREF="../../../../org/apache/openjpa/slice/SliceInfo.html" title="class in org.apache.openjpa.slice">SliceInfo</A> <B>getSlicesByPolicy</B>(<A HREF="../../../../org/apache/openjpa/kernel/OpenJPAStateManager.html" title="interface in org.apache.openjpa.kernel">OpenJPAStateManager</A>&nbsp;sm,
<A HREF="../../../../org/apache/openjpa/slice/DistributedConfiguration.html" title="interface in org.apache.openjpa.slice">DistributedConfiguration</A>&nbsp;conf,
<A HREF="http://java.sun.com/j2se/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A>&nbsp;ctx)</PRE>
<DL>
<DD>Gets the target slices for the given StateManager.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="isReplicated(java.lang.Object, org.apache.openjpa.slice.DistributedConfiguration)"><!-- --></A><H3>
isReplicated</H3>
<PRE>
public static boolean <B>isReplicated</B>(<A HREF="http://java.sun.com/j2se/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A>&nbsp;pc,
<A HREF="../../../../org/apache/openjpa/slice/DistributedConfiguration.html" title="interface in org.apache.openjpa.slice">DistributedConfiguration</A>&nbsp;conf)</PRE>
<DL>
<DD>Affirms if the given instance be replicated to multiple slices.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="isSliceAssigned(org.apache.openjpa.kernel.OpenJPAStateManager)"><!-- --></A><H3>
isSliceAssigned</H3>
<PRE>
public static boolean <B>isSliceAssigned</B>(<A HREF="../../../../org/apache/openjpa/kernel/OpenJPAStateManager.html" title="interface in org.apache.openjpa.kernel">OpenJPAStateManager</A>&nbsp;sm)</PRE>
<DL>
<DD>Affirms if the given StateManager has an assigned slice.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="getSliceInfo(org.apache.openjpa.kernel.OpenJPAStateManager)"><!-- --></A><H3>
getSliceInfo</H3>
<PRE>
public static <A HREF="../../../../org/apache/openjpa/slice/SliceInfo.html" title="class in org.apache.openjpa.slice">SliceInfo</A> <B>getSliceInfo</B>(<A HREF="../../../../org/apache/openjpa/kernel/OpenJPAStateManager.html" title="interface in org.apache.openjpa.kernel">OpenJPAStateManager</A>&nbsp;sm)</PRE>
<DL>
<DD>Gets the assigned slice information, if any, from the given StateManager.
<P>
<DD><DL>
</DL>
</DD>
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