1<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 2<!--NewPage--> 3<HTML> 4<HEAD> 5<!-- Generated by javadoc (build 1.5.0) on Thu May 15 17:17:33 EDT 2008 --> 6<TITLE> 7Deleter (Oracle - Berkeley DB Java API) 8</TITLE> 9 10<META NAME="keywords" CONTENT="com.sleepycat.persist.evolve.Deleter class"> 11 12<LINK REL ="stylesheet" TYPE="text/css" HREF="/style.css" TITLE="Style"> 13 14<SCRIPT type="text/javascript"> 15function windowTitle() 16{ 17 parent.document.title="Deleter (Oracle - Berkeley DB Java API)"; 18} 19</SCRIPT> 20<NOSCRIPT> 21</NOSCRIPT> 22 23</HEAD> 24 25<BODY BGCOLOR="white" onload="windowTitle();"> 26 27 28<!-- ========= START OF TOP NAVBAR ======= --> 29<A NAME="navbar_top"><!-- --></A> 30<A HREF="#skip-navbar_top" title="Skip navigation links"></A> 31<TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""> 32<TR> 33<TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> 34<A NAME="navbar_top_firstrow"><!-- --></A> 35<TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> 36 <TR ALIGN="center" VALIGN="top"> 37 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="/overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> 38 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> 39 <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> 40 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/Deleter.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> 41 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> 42 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="/deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> 43 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="/index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> 44 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="/help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> 45 </TR> 46</TABLE> 47</TD> 48<TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM> 49<b>Berkeley DB</b><br><font size="-1"> version 4.7.25</font></EM> 50</TD> 51</TR> 52 53<TR> 54<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> 55 <A HREF="/com/sleepycat/persist/evolve/DeletedClassException.html" title="class in com.sleepycat.persist.evolve"><B>PREV CLASS</B></A> 56 <A HREF="/com/sleepycat/persist/evolve/EntityConverter.html" title="class in com.sleepycat.persist.evolve"><B>NEXT CLASS</B></A></FONT></TD> 57<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> 58 <A HREF="/index.html?com/sleepycat/persist/evolve/Deleter.html" target="_top"><B>FRAMES</B></A> 59 <A HREF="Deleter.html" target="_top"><B>NO FRAMES</B></A> 60 <SCRIPT type="text/javascript"> 61 <!-- 62 if(window==top) { 63 document.writeln('<A HREF="/allclasses-noframe.html"><B>All Classes</B></A>'); 64 } 65 //--> 66</SCRIPT> 67<NOSCRIPT> 68 <A HREF="/allclasses-noframe.html"><B>All Classes</B></A> 69</NOSCRIPT> 70 71 72</FONT></TD> 73</TR> 74<TR> 75<TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> 76 SUMMARY: NESTED | FIELD | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD> 77<TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> 78DETAIL: FIELD | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD> 79</TR> 80</TABLE> 81<A NAME="skip-navbar_top"></A> 82<!-- ========= END OF TOP NAVBAR ========= --> 83 84<HR> 85<!-- ======== START OF CLASS DATA ======== --> 86<H2> 87<FONT SIZE="-1"> 88com.sleepycat.persist.evolve</FONT> 89<BR> 90Class Deleter</H2> 91<PRE> 92<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">java.lang.Object</A> 93 <IMG SRC="/resources/inherit.gif" ALT="extended by "><A HREF="/com/sleepycat/persist/evolve/Mutation.html" title="class in com.sleepycat.persist.evolve">com.sleepycat.persist.evolve.Mutation</A> 94 <IMG SRC="/resources/inherit.gif" ALT="extended by "><B>com.sleepycat.persist.evolve.Deleter</B> 95</PRE> 96<DL> 97<DT><B>All Implemented Interfaces:</B> <DD><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/Serializable.html" title="class or interface in java.io">Serializable</A></DD> 98</DL> 99<HR> 100<DL> 101<DT><PRE>public class <B>Deleter</B><DT>extends <A HREF="/com/sleepycat/persist/evolve/Mutation.html" title="class in com.sleepycat.persist.evolve">Mutation</A></DL> 102</PRE> 103 104<P> 105A mutation for deleting an entity class or field. 106 107 <p><strong>WARNING:</strong> The data for the deleted class or field will be 108 destroyed and will be recoverable only by restoring from backup. If you 109 wish to convert the instance data to a different type or format, use a 110 <A HREF="/com/sleepycat/persist/evolve/Conversion.html" title="interface in com.sleepycat.persist.evolve"><CODE>Conversion</CODE></A> mutation instead.</p> 111 112 <p>For example, to delete a field:</p> 113 114 <pre class="code"> 115 package my.package; 116 117 // The old class. Version 0 is implied. 118 // 119 @Entity 120 class Person { 121 String name; 122 String favoriteColors; 123 } 124 125 // The new class. A new version number must be assigned. 126 // 127 @Entity(version=1) 128 class Person { 129 String name; 130 } 131 132 // Add the mutation for deleting a field. 133 // 134 Mutations mutations = new Mutations(); 135 136 mutations.addDeleter(new Deleter(Person.class.getName(), 0, 137 "favoriteColors"); 138 139 // 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> 140 141 <p>To delete an entity class:</p> 142 143 <pre class="code"> 144 package my.package; 145 146 // The old class. Version 0 is implied. 147 // 148 @Entity 149 class Statistics { 150 ... 151 } 152 153 // Add the mutation for deleting a class. 154 // 155 Mutations mutations = new Mutations(); 156 157 mutations.addDeleter(new Deleter("my.package.Statistics", 0)); 158 159 // 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> 160<P> 161 162<P> 163<DL> 164<DT><B>See Also:</B><DD><A HREF="/com/sleepycat/persist/evolve/package-summary.html"><CODE>Class Evolution</CODE></A>, 165<A HREF="/serialized-form.html#com.sleepycat.persist.evolve.Deleter">Serialized Form</A></DL> 166<HR> 167 168<P> 169 170<!-- ======== CONSTRUCTOR SUMMARY ======== --> 171 172<A NAME="constructor_summary"><!-- --></A> 173<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> 174<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> 175<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"> 176<B>Constructor Summary</B></FONT></TH> 177</TR> 178<TR BGCOLOR="white" CLASS="TableRowColor"> 179<TD><CODE><B><A HREF="/com/sleepycat/persist/evolve/Deleter.html#Deleter(java.lang.String, int)">Deleter</A></B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> className, 180 int classVersion)</CODE> 181 182<BR> 183 Creates a mutation for deleting an entity class.</TD> 184</TR> 185<TR BGCOLOR="white" CLASS="TableRowColor"> 186<TD><CODE><B><A HREF="/com/sleepycat/persist/evolve/Deleter.html#Deleter(java.lang.String, int, java.lang.String)">Deleter</A></B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> declaringClass, 187 int declaringClassVersion, 188 <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> fieldName)</CODE> 189 190<BR> 191 Creates a mutation for deleting the given field from all instances of 192 the given class version.</TD> 193</TR> 194</TABLE> 195 196<!-- ========== METHOD SUMMARY =========== --> 197 198<A NAME="method_summary"><!-- --></A> 199<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> 200<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> 201<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"> 202<B>Method Summary</B></FONT></TH> 203</TR> 204<TR BGCOLOR="white" CLASS="TableRowColor"> 205<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 206<CODE> <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A></CODE></FONT></TD> 207<TD><CODE><B><A HREF="/com/sleepycat/persist/evolve/Deleter.html#toString()">toString</A></B>()</CODE> 208 209<BR> 210 </TD> 211</TR> 212</TABLE> 213 <A NAME="methods_inherited_from_class_com.sleepycat.persist.evolve.Mutation"><!-- --></A> 214<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> 215<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"> 216<TH ALIGN="left"><B>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></B></TH> 217</TR> 218<TR BGCOLOR="white" CLASS="TableRowColor"> 219<TD><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></TD> 220</TR> 221</TABLE> 222 <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A> 223<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> 224<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"> 225<TH ALIGN="left"><B>Methods inherited from class java.lang.<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></B></TH> 226</TR> 227<TR BGCOLOR="white" CLASS="TableRowColor"> 228<TD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#clone()" title="class or interface in java.lang">clone</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#finalize()" title="class or interface in java.lang">finalize</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#getClass()" title="class or interface in java.lang">getClass</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#notify()" title="class or interface in java.lang">notify</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#notifyAll()" title="class or interface in java.lang">notifyAll</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#wait()" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#wait(long)" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#wait(long, int)" title="class or interface in java.lang">wait</A></CODE></TD> 229</TR> 230</TABLE> 231 232<P> 233 234<!-- ========= CONSTRUCTOR DETAIL ======== --> 235 236<A NAME="constructor_detail"><!-- --></A> 237<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> 238<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> 239<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"> 240<B>Constructor Detail</B></FONT></TH> 241</TR> 242</TABLE> 243 244<A NAME="Deleter(java.lang.String, int)"><!-- --></A><H3> 245Deleter</H3> 246<PRE> 247public <B>Deleter</B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> className, 248 int classVersion)</PRE> 249<DL> 250<DD>Creates a mutation for deleting an entity class. 251<P> 252</DL> 253<HR> 254 255<A NAME="Deleter(java.lang.String, int, java.lang.String)"><!-- --></A><H3> 256Deleter</H3> 257<PRE> 258public <B>Deleter</B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> declaringClass, 259 int declaringClassVersion, 260 <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> fieldName)</PRE> 261<DL> 262<DD>Creates a mutation for deleting the given field from all instances of 263 the given class version. 264<P> 265</DL> 266 267<!-- ============ METHOD DETAIL ========== --> 268 269<A NAME="method_detail"><!-- --></A> 270<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> 271<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> 272<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"> 273<B>Method Detail</B></FONT></TH> 274</TR> 275</TABLE> 276 277<A NAME="toString()"><!-- --></A><H3> 278toString</H3> 279<PRE> 280public <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> <B>toString</B>()</PRE> 281<DL> 282<DD><DL> 283<DT><B>Overrides:</B><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></DL> 284</DD> 285<DD><DL> 286</DL> 287</DD> 288</DL> 289<!-- ========= END OF CLASS DATA ========= --> 290<HR> 291 292 293<!-- ======= START OF BOTTOM NAVBAR ====== --> 294<A NAME="navbar_bottom"><!-- --></A> 295<A HREF="#skip-navbar_bottom" title="Skip navigation links"></A> 296<TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""> 297<TR> 298<TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> 299<A NAME="navbar_bottom_firstrow"><!-- --></A> 300<TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> 301 <TR ALIGN="center" VALIGN="top"> 302 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="/overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> 303 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> 304 <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> 305 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/Deleter.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> 306 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> 307 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="/deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> 308 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="/index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> 309 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="/help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> 310 </TR> 311</TABLE> 312</TD> 313<TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM> 314<b>Berkeley DB</b><br><font size="-1"> version 4.7.25</font></EM> 315</TD> 316</TR> 317 318<TR> 319<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> 320 <A HREF="/com/sleepycat/persist/evolve/DeletedClassException.html" title="class in com.sleepycat.persist.evolve"><B>PREV CLASS</B></A> 321 <A HREF="/com/sleepycat/persist/evolve/EntityConverter.html" title="class in com.sleepycat.persist.evolve"><B>NEXT CLASS</B></A></FONT></TD> 322<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> 323 <A HREF="/index.html?com/sleepycat/persist/evolve/Deleter.html" target="_top"><B>FRAMES</B></A> 324 <A HREF="Deleter.html" target="_top"><B>NO FRAMES</B></A> 325 <SCRIPT type="text/javascript"> 326 <!-- 327 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