<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <!-- NewPage --> <html lang="en"> <head> <!-- Generated by javadoc (version 1.7.0_75) on Fri May 13 13:32:18 PDT 2016 --> <title>Deleter (Oracle - Berkeley DB Java API)</title> <meta name="date" content="2016-05-13"> <link rel="stylesheet" type="text/css" href="../../../../style.css" title="Style"> </head> <body> <script type="text/javascript"><!-- if (location.href.indexOf('is-external=true') == -1) { parent.document.title="Deleter (Oracle - Berkeley DB Java API)"; } //--> </script> <noscript> <div>JavaScript is disabled on your browser.</div> </noscript> <!-- ========= START OF TOP NAVBAR ======= --> <div class="topNav"><a name="navbar_top"> <!-- --> </a><a href="#skip-navbar_top" title="Skip navigation links"></a><a name="navbar_top_firstrow"> <!-- --> </a> <ul class="navList" title="Navigation"> <li><a href="../../../../overview-summary.html">Overview</a></li> <li><a href="package-summary.html">Package</a></li> <li class="navBarCell1Rev">Class</li> <li><a href="class-use/Deleter.html">Use</a></li> <li><a href="package-tree.html">Tree</a></li> <li><a href="../../../../deprecated-list.html">Deprecated</a></li> <li><a href="../../../../index-all.html">Index</a></li> <li><a href="../../../../help-doc.html">Help</a></li> </ul> <div class="aboutLanguage"><em><b>Berkeley DB</b><br><font size="-1"> version 6.1.29</font></em></div> </div> <div class="subNav"> <ul class="navList"> <li><a href="../../../../com/sleepycat/persist/evolve/DeletedClassException.html" title="class in com.sleepycat.persist.evolve"><span class="strong">Prev Class</span></a></li> <li><a href="../../../../com/sleepycat/persist/evolve/EntityConverter.html" title="class in com.sleepycat.persist.evolve"><span class="strong">Next Class</span></a></li> </ul> <ul class="navList"> <li><a href="../../../../index.html?com/sleepycat/persist/evolve/Deleter.html" target="_top">Frames</a></li> <li><a href="Deleter.html" target="_top">No Frames</a></li> </ul> <ul class="navList" id="allclasses_navbar_top"> <li><a href="../../../../allclasses-noframe.html">All Classes</a></li> </ul> <div> <script type="text/javascript"><!-- allClassesLink = document.getElementById("allclasses_navbar_top"); if(window==top) { allClassesLink.style.display = "block"; } else { allClassesLink.style.display = "none"; } //--> </script> </div> <div> <ul class="subNavList"> <li>Summary: </li> <li>Nested | </li> <li>Field | </li> <li><a href="#constructor_summary">Constr</a> | </li> <li><a href="#method_summary">Method</a></li> </ul> <ul class="subNavList"> <li>Detail: </li> <li>Field | </li> <li><a href="#constructor_detail">Constr</a> | </li> <li><a href="#method_detail">Method</a></li> </ul> </div> <a name="skip-navbar_top"> <!-- --> </a></div> <!-- ========= END OF TOP NAVBAR ========= --> <!-- ======== START OF CLASS DATA ======== --> <div class="header"> <div class="subTitle">com.sleepycat.persist.evolve</div> <h2 title="Class Deleter" class="title">Class Deleter</h2> </div> <div class="contentContainer"> <ul class="inheritance"> <li>java.lang.Object</li> <li> <ul class="inheritance"> <li><a href="../../../../com/sleepycat/persist/evolve/Mutation.html" title="class in com.sleepycat.persist.evolve">com.sleepycat.persist.evolve.Mutation</a></li> <li> <ul class="inheritance"> <li>com.sleepycat.persist.evolve.Deleter</li> </ul> </li> </ul> </li> </ul> <div class="description"> <ul class="blockList"> <li class="blockList"> <dl> <dt>All Implemented Interfaces:</dt> <dd>java.io.Serializable</dd> </dl> <hr> <br> <pre>public class <span class="strong">Deleter</span> extends <a href="../../../../com/sleepycat/persist/evolve/Mutation.html" title="class in com.sleepycat.persist.evolve">Mutation</a></pre> <div class="block">A mutation for deleting an entity class or field. <p><strong>WARNING:</strong> The data for the deleted class or field will be destroyed and will be recoverable only by restoring from backup. If you wish to convert the instance data to a different type or format, use a <a href="../../../../com/sleepycat/persist/evolve/Conversion.html" title="interface in com.sleepycat.persist.evolve"><code>Conversion</code></a> mutation instead.</p> <p>For example, to delete a field:</p> <pre class="code"> package my.package; // The old class. Version 0 is implied. // @Entity class Person { String name; String favoriteColors; } // The new class. A new version number must be assigned. // @Entity(version=1) class Person { String name; } // Add the mutation for deleting a field. // Mutations mutations = new Mutations(); mutations.addDeleter(new Deleter(Person.class.getName(), 0, "favoriteColors"); // Configure the mutations as described <a href="../../../../com/sleepycat/persist/evolve/Mutations.html" title="class in com.sleepycat.persist.evolve"><code>here</code></a>.</pre> <p>To delete an entity class:</p> <pre class="code"> package my.package; // The old class. Version 0 is implied. // @Entity class Statistics { ... } // Add the mutation for deleting a class. // Mutations mutations = new Mutations(); mutations.addDeleter(new Deleter("my.package.Statistics", 0)); // Configure the mutations as described <a href="../../../../com/sleepycat/persist/evolve/Mutations.html" title="class in com.sleepycat.persist.evolve"><code>here</code></a>.</pre></div> <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../com/sleepycat/persist/evolve/package-summary.html"><code>Class Evolution</code></a>, <a href="../../../../serialized-form.html#com.sleepycat.persist.evolve.Deleter">Serialized Form</a></dd></dl> </li> </ul> </div> <div class="summary"> <ul class="blockList"> <li class="blockList"> <!-- ======== CONSTRUCTOR SUMMARY ======== --> <ul class="blockList"> <li class="blockList"><a name="constructor_summary"> <!-- --> </a> <h3>Constructor Summary</h3> <table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Constructor Summary table, listing constructors, and an explanation"> <caption><span>Constructors</span><span class="tabEnd"> </span></caption> <tr> <th class="colOne" scope="col">Constructor and Description</th> </tr> <tr class="altColor"> <td class="colOne"><code><strong><a href="../../../../com/sleepycat/persist/evolve/Deleter.html#Deleter(java.lang.String,%20int)">Deleter</a></strong>(java.lang.String className, int classVersion)</code> <div class="block">Creates a mutation for deleting an entity class.</div> </td> </tr> <tr class="rowColor"> <td class="colOne"><code><strong><a href="../../../../com/sleepycat/persist/evolve/Deleter.html#Deleter(java.lang.String,%20int,%20java.lang.String)">Deleter</a></strong>(java.lang.String declaringClass, int declaringClassVersion, java.lang.String fieldName)</code> <div class="block">Creates a mutation for deleting the given field from all instances of the given class version.</div> </td> </tr> </table> </li> </ul> <!-- ========== METHOD SUMMARY =========== --> <ul class="blockList"> <li class="blockList"><a name="method_summary"> <!-- --> </a> <h3>Method Summary</h3> <table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> <caption><span>Methods</span><span class="tabEnd"> </span></caption> <tr> <th class="colFirst" scope="col">Modifier and Type</th> <th class="colLast" scope="col">Method and Description</th> </tr> <tr class="altColor"> <td class="colFirst"><code>java.lang.String</code></td> <td class="colLast"><code><strong><a href="../../../../com/sleepycat/persist/evolve/Deleter.html#toString()">toString</a></strong>()</code> </td> </tr> </table> <ul class="blockList"> <li class="blockList"><a name="methods_inherited_from_class_com.sleepycat.persist.evolve.Mutation"> <!-- --> </a> <h3>Methods inherited from class com.sleepycat.persist.evolve.<a href="../../../../com/sleepycat/persist/evolve/Mutation.html" title="class in com.sleepycat.persist.evolve">Mutation</a></h3> <code><a href="../../../../com/sleepycat/persist/evolve/Mutation.html#equals(java.lang.Object)">equals</a>, <a href="../../../../com/sleepycat/persist/evolve/Mutation.html#getClassName()">getClassName</a>, <a href="../../../../com/sleepycat/persist/evolve/Mutation.html#getClassVersion()">getClassVersion</a>, <a href="../../../../com/sleepycat/persist/evolve/Mutation.html#getFieldName()">getFieldName</a>, <a href="../../../../com/sleepycat/persist/evolve/Mutation.html#hashCode()">hashCode</a></code></li> </ul> <ul class="blockList"> <li class="blockList"><a name="methods_inherited_from_class_java.lang.Object"> <!-- --> </a> <h3>Methods inherited from class java.lang.Object</h3> <code>clone, finalize, getClass, notify, notifyAll, wait, wait, wait</code></li> </ul> </li> </ul> </li> </ul> </div> <div class="details"> <ul class="blockList"> <li class="blockList"> <!-- ========= CONSTRUCTOR DETAIL ======== --> <ul class="blockList"> <li class="blockList"><a name="constructor_detail"> <!-- --> </a> <h3>Constructor Detail</h3> <a name="Deleter(java.lang.String, int)"> <!-- --> </a> <ul class="blockList"> <li class="blockList"> <h4>Deleter</h4> <pre>public Deleter(java.lang.String className, int classVersion)</pre> <div class="block">Creates a mutation for deleting an entity class.</div> </li> </ul> <a name="Deleter(java.lang.String, int, java.lang.String)"> <!-- --> </a> <ul class="blockListLast"> <li class="blockList"> <h4>Deleter</h4> <pre>public Deleter(java.lang.String declaringClass, int declaringClassVersion, java.lang.String fieldName)</pre> <div class="block">Creates a mutation for deleting the given field from all instances of the given class version.</div> </li> </ul> </li> </ul> <!-- ============ METHOD DETAIL ========== --> <ul class="blockList"> <li class="blockList"><a name="method_detail"> <!-- --> </a> <h3>Method Detail</h3> <a name="toString()"> <!-- --> </a> <ul class="blockListLast"> <li class="blockList"> <h4>toString</h4> <pre>public java.lang.String toString()</pre> <dl> <dt><strong>Overrides:</strong></dt> <dd><code><a href="../../../../com/sleepycat/persist/evolve/Mutation.html#toString()">toString</a></code> in class <code><a href="../../../../com/sleepycat/persist/evolve/Mutation.html" title="class in com.sleepycat.persist.evolve">Mutation</a></code></dd> </dl> </li> </ul> </li> </ul> </li> </ul> </div> </div> <!-- ========= END OF CLASS DATA ========= --> <!-- ======= START OF BOTTOM NAVBAR ====== --> <div class="bottomNav"><a name="navbar_bottom"> <!-- --> </a><a href="#skip-navbar_bottom" title="Skip navigation links"></a><a name="navbar_bottom_firstrow"> <!-- --> </a> <ul class="navList" title="Navigation"> <li><a href="../../../../overview-summary.html">Overview</a></li> <li><a href="package-summary.html">Package</a></li> <li class="navBarCell1Rev">Class</li> <li><a href="class-use/Deleter.html">Use</a></li> <li><a href="package-tree.html">Tree</a></li> 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