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Mutations
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com.sleepycat.persist.evolve</FONT>
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Class Mutations</H2>
<PRE>
java.lang.Object
  <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>com.sleepycat.persist.evolve.Mutations</B>
</PRE>
<DL>
<DT><B>All Implemented Interfaces:</B> <DD>java.io.Serializable</DD>
</DL>
<HR>
<DL>
<DT><PRE>public class <B>Mutations</B><DT>extends java.lang.Object<DT>implements java.io.Serializable</DL>
</PRE>

<P>
A collection of mutations for configuring class evolution.

 <p>Mutations are configured when a store is opened via <A HREF="../../../../com/sleepycat/persist/StoreConfig.html#setMutations(com.sleepycat.persist.evolve.Mutations)"><CODE>StoreConfig.setMutations</CODE></A>.  For example:</p>

 <pre class="code">
  Mutations mutations = new Mutations();
  // Add mutations...
  StoreConfig config = new StoreConfig();
  config.setMutations(mutations);
  EntityStore store = new EntityStore(env, "myStore", config);</pre>

 <p>Mutations cause data conversion to occur lazily as instances are read
 from the store.  The <A HREF="../../../../com/sleepycat/persist/EntityStore.html#evolve(com.sleepycat.persist.evolve.EvolveConfig)"><CODE>EntityStore.evolve</CODE></A> method
 may also be used to perform eager conversion.</p>

 <p>Not all incompatible class changes can be handled via mutations.  For
 example, complex refactoring may require a transformation that manipulates
 multiple entity instances at once.  Such changes are not possible with
 mutations but can made by performing a <a
 href="package-summary.html#storeConversion">store conversion</a>.</p>
<P>

<P>
<DL>
<DT><B>See Also:</B><DD><CODE>Class Evolution</CODE>, 
<A HREF="../../../../serialized-form.html#com.sleepycat.persist.evolve.Mutations">Serialized Form</A></DL>
<HR>

<P>

<!-- ======== CONSTRUCTOR SUMMARY ======== -->

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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><B><A HREF="../../../../com/sleepycat/persist/evolve/Mutations.html#Mutations()">Mutations</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Creates an empty set of mutations.</TD>
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&nbsp;
<!-- ========== METHOD SUMMARY =========== -->

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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/persist/evolve/Mutations.html#addConverter(com.sleepycat.persist.evolve.Converter)">addConverter</A></B>(<A HREF="../../../../com/sleepycat/persist/evolve/Converter.html" title="class in com.sleepycat.persist.evolve">Converter</A>&nbsp;converter)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Adds a converter mutation.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/persist/evolve/Mutations.html#addDeleter(com.sleepycat.persist.evolve.Deleter)">addDeleter</A></B>(<A HREF="../../../../com/sleepycat/persist/evolve/Deleter.html" title="class in com.sleepycat.persist.evolve">Deleter</A>&nbsp;deleter)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Adds a deleter mutation.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/persist/evolve/Mutations.html#addRenamer(com.sleepycat.persist.evolve.Renamer)">addRenamer</A></B>(<A HREF="../../../../com/sleepycat/persist/evolve/Renamer.html" title="class in com.sleepycat.persist.evolve">Renamer</A>&nbsp;renamer)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Adds a renamer mutation.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/persist/evolve/Mutations.html#equals(java.lang.Object)">equals</A></B>(java.lang.Object&nbsp;other)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns true if this collection has the same set of mutations as the
 given collection and all mutations are equal.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../com/sleepycat/persist/evolve/Converter.html" title="class in com.sleepycat.persist.evolve">Converter</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/persist/evolve/Mutations.html#getConverter(java.lang.String, int, java.lang.String)">getConverter</A></B>(java.lang.String&nbsp;className,
             int&nbsp;classVersion,
             java.lang.String&nbsp;fieldName)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the converter mutation for the given class, version and field,
 or null if none exists.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;java.util.Collection&lt;<A HREF="../../../../com/sleepycat/persist/evolve/Converter.html" title="class in com.sleepycat.persist.evolve">Converter</A>&gt;</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/persist/evolve/Mutations.html#getConverters()">getConverters</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns an unmodifiable collection of all converter mutations.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../com/sleepycat/persist/evolve/Deleter.html" title="class in com.sleepycat.persist.evolve">Deleter</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/persist/evolve/Mutations.html#getDeleter(java.lang.String, int, java.lang.String)">getDeleter</A></B>(java.lang.String&nbsp;className,
           int&nbsp;classVersion,
           java.lang.String&nbsp;fieldName)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the deleter mutation for the given class, version and field, or
 null if none exists.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;java.util.Collection&lt;<A HREF="../../../../com/sleepycat/persist/evolve/Deleter.html" title="class in com.sleepycat.persist.evolve">Deleter</A>&gt;</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/persist/evolve/Mutations.html#getDeleters()">getDeleters</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns an unmodifiable collection of all deleter mutations.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../com/sleepycat/persist/evolve/Renamer.html" title="class in com.sleepycat.persist.evolve">Renamer</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/persist/evolve/Mutations.html#getRenamer(java.lang.String, int, java.lang.String)">getRenamer</A></B>(java.lang.String&nbsp;className,
           int&nbsp;classVersion,
           java.lang.String&nbsp;fieldName)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the renamer mutation for the given class, version and field, or
 null if none exists.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;java.util.Collection&lt;<A HREF="../../../../com/sleepycat/persist/evolve/Renamer.html" title="class in com.sleepycat.persist.evolve">Renamer</A>&gt;</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/persist/evolve/Mutations.html#getRenamers()">getRenamers</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns an unmodifiable collection of all renamer mutations.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/persist/evolve/Mutations.html#hashCode()">hashCode</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/persist/evolve/Mutations.html#isEmpty()">isEmpty</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns true if no mutations are present.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/sleepycat/persist/evolve/Mutations.html#toString()">toString</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
</TR>
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<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<TH ALIGN="left"><B>Methods inherited from class java.lang.Object</B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE>clone, finalize, getClass, notify, notifyAll, wait, wait, wait</CODE></TD>
</TR>
</TABLE>
&nbsp;
<P>

<!-- ========= CONSTRUCTOR DETAIL ======== -->

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<A NAME="Mutations()"><!-- --></A><H3>
Mutations</H3>
<PRE>
public <B>Mutations</B>()</PRE>
<DL>
<DD>Creates an empty set of mutations.
<P>
</DL>

<!-- ============ METHOD DETAIL ========== -->

<A NAME="method_detail"><!-- --></A>
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<B>Method Detail</B></FONT></TH>
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<A NAME="isEmpty()"><!-- --></A><H3>
isEmpty</H3>
<PRE>
public boolean <B>isEmpty</B>()</PRE>
<DL>
<DD>Returns true if no mutations are present.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="addRenamer(com.sleepycat.persist.evolve.Renamer)"><!-- --></A><H3>
addRenamer</H3>
<PRE>
public void <B>addRenamer</B>(<A HREF="../../../../com/sleepycat/persist/evolve/Renamer.html" title="class in com.sleepycat.persist.evolve">Renamer</A>&nbsp;renamer)</PRE>
<DL>
<DD>Adds a renamer mutation.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getRenamer(java.lang.String, int, java.lang.String)"><!-- --></A><H3>
getRenamer</H3>
<PRE>
public <A HREF="../../../../com/sleepycat/persist/evolve/Renamer.html" title="class in com.sleepycat.persist.evolve">Renamer</A> <B>getRenamer</B>(java.lang.String&nbsp;className,
                          int&nbsp;classVersion,
                          java.lang.String&nbsp;fieldName)</PRE>
<DL>
<DD>Returns the renamer mutation for the given class, version and field, or
 null if none exists.  A null field name should be specified to get a
 class renamer.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getRenamers()"><!-- --></A><H3>
getRenamers</H3>
<PRE>
public java.util.Collection&lt;<A HREF="../../../../com/sleepycat/persist/evolve/Renamer.html" title="class in com.sleepycat.persist.evolve">Renamer</A>&gt; <B>getRenamers</B>()</PRE>
<DL>
<DD>Returns an unmodifiable collection of all renamer mutations.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="addDeleter(com.sleepycat.persist.evolve.Deleter)"><!-- --></A><H3>
addDeleter</H3>
<PRE>
public void <B>addDeleter</B>(<A HREF="../../../../com/sleepycat/persist/evolve/Deleter.html" title="class in com.sleepycat.persist.evolve">Deleter</A>&nbsp;deleter)</PRE>
<DL>
<DD>Adds a deleter mutation.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getDeleter(java.lang.String, int, java.lang.String)"><!-- --></A><H3>
getDeleter</H3>
<PRE>
public <A HREF="../../../../com/sleepycat/persist/evolve/Deleter.html" title="class in com.sleepycat.persist.evolve">Deleter</A> <B>getDeleter</B>(java.lang.String&nbsp;className,
                          int&nbsp;classVersion,
                          java.lang.String&nbsp;fieldName)</PRE>
<DL>
<DD>Returns the deleter mutation for the given class, version and field, or
 null if none exists.  A null field name should be specified to get a
 class deleter.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getDeleters()"><!-- --></A><H3>
getDeleters</H3>
<PRE>
public java.util.Collection&lt;<A HREF="../../../../com/sleepycat/persist/evolve/Deleter.html" title="class in com.sleepycat.persist.evolve">Deleter</A>&gt; <B>getDeleters</B>()</PRE>
<DL>
<DD>Returns an unmodifiable collection of all deleter mutations.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="addConverter(com.sleepycat.persist.evolve.Converter)"><!-- --></A><H3>
addConverter</H3>
<PRE>
public void <B>addConverter</B>(<A HREF="../../../../com/sleepycat/persist/evolve/Converter.html" title="class in com.sleepycat.persist.evolve">Converter</A>&nbsp;converter)</PRE>
<DL>
<DD>Adds a converter mutation.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getConverter(java.lang.String, int, java.lang.String)"><!-- --></A><H3>
getConverter</H3>
<PRE>
public <A HREF="../../../../com/sleepycat/persist/evolve/Converter.html" title="class in com.sleepycat.persist.evolve">Converter</A> <B>getConverter</B>(java.lang.String&nbsp;className,
                              int&nbsp;classVersion,
                              java.lang.String&nbsp;fieldName)</PRE>
<DL>
<DD>Returns the converter mutation for the given class, version and field,
 or null if none exists.  A null field name should be specified to get a
 class converter.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getConverters()"><!-- --></A><H3>
getConverters</H3>
<PRE>
public java.util.Collection&lt;<A HREF="../../../../com/sleepycat/persist/evolve/Converter.html" title="class in com.sleepycat.persist.evolve">Converter</A>&gt; <B>getConverters</B>()</PRE>
<DL>
<DD>Returns an unmodifiable collection of all converter mutations.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="equals(java.lang.Object)"><!-- --></A><H3>
equals</H3>
<PRE>
public boolean <B>equals</B>(java.lang.Object&nbsp;other)</PRE>
<DL>
<DD>Returns true if this collection has the same set of mutations as the
 given collection and all mutations are equal.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE>equals</CODE> in class <CODE>java.lang.Object</CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="hashCode()"><!-- --></A><H3>
hashCode</H3>
<PRE>
public int <B>hashCode</B>()</PRE>
<DL>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE>hashCode</CODE> in class <CODE>java.lang.Object</CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="toString()"><!-- --></A><H3>
toString</H3>
<PRE>
public java.lang.String <B>toString</B>()</PRE>
<DL>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE>toString</CODE> in class <CODE>java.lang.Object</CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
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