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 1.6.0_03) on Mon Apr 12 16:25:50 EDT 2010 --> 6<TITLE> 7ClassEnhancer (Oracle - Berkeley DB Java API) 8</TITLE> 9 10<META NAME="date" CONTENT="2010-04-12"> 11 12<LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../style.css" TITLE="Style"> 13 14<SCRIPT type="text/javascript"> 15function windowTitle() 16{ 17 if (location.href.indexOf('is-external=true') == -1) { 18 parent.document.title="ClassEnhancer (Oracle - Berkeley DB Java API)"; 19 } 20} 21</SCRIPT> 22<NOSCRIPT> 23</NOSCRIPT> 24 25</HEAD> 26 27<BODY BGCOLOR="white" onload="windowTitle();"> 28<HR> 29 30 31<!-- ========= START OF TOP NAVBAR ======= --> 32<A NAME="navbar_top"><!-- --></A> 33<A HREF="#skip-navbar_top" title="Skip navigation links"></A> 34<TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""> 35<TR> 36<TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> 37<A NAME="navbar_top_firstrow"><!-- --></A> 38<TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> 39 <TR ALIGN="center" VALIGN="top"> 40 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> 41 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> 42 <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> 43 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/ClassEnhancer.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> 44 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> 45 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> 46 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> 47 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> 48 </TR> 49</TABLE> 50</TD> 51<TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM> 52<b>Berkeley DB</b><br><font size="-1"> version 4.8.30</font></EM> 53</TD> 54</TR> 55 56<TR> 57<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> 58 <A HREF="../../../../com/sleepycat/persist/model/AnnotationModel.html" title="class in com.sleepycat.persist.model"><B>PREV CLASS</B></A> 59 <A HREF="../../../../com/sleepycat/persist/model/ClassMetadata.html" title="class in com.sleepycat.persist.model"><B>NEXT CLASS</B></A></FONT></TD> 60<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> 61 <A HREF="../../../../index.html?com/sleepycat/persist/model/ClassEnhancer.html" target="_top"><B>FRAMES</B></A> 62 <A HREF="ClassEnhancer.html" target="_top"><B>NO FRAMES</B></A> 63 <SCRIPT type="text/javascript"> 64 <!-- 65 if(window==top) { 66 document.writeln('<A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A>'); 67 } 68 //--> 69</SCRIPT> 70<NOSCRIPT> 71 <A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A> 72</NOSCRIPT> 73 74 75</FONT></TD> 76</TR> 77<TR> 78<TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> 79 SUMMARY: NESTED | FIELD | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD> 80<TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> 81DETAIL: FIELD | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD> 82</TR> 83</TABLE> 84<A NAME="skip-navbar_top"></A> 85<!-- ========= END OF TOP NAVBAR ========= --> 86 87<HR> 88<!-- ======== START OF CLASS DATA ======== --> 89<H2> 90<FONT SIZE="-1"> 91com.sleepycat.persist.model</FONT> 92<BR> 93Class ClassEnhancer</H2> 94<PRE> 95<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</A> 96 <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>com.sleepycat.persist.model.ClassEnhancer</B> 97</PRE> 98<DL> 99<DT><B>All Implemented Interfaces:</B> <DD><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/instrument/ClassFileTransformer.html?is-external=true" title="class or interface in java.lang.instrument">ClassFileTransformer</A></DD> 100</DL> 101<HR> 102<DL> 103<DT><PRE>public class <B>ClassEnhancer</B><DT>extends <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A><DT>implements <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/instrument/ClassFileTransformer.html?is-external=true" title="class or interface in java.lang.instrument">ClassFileTransformer</A></DL> 104</PRE> 105 106<P> 107Enhances the bytecode of persistent classes to provide efficient access to 108 fields and constructors, and to avoid special security policy settings for 109 accessing non-public members. Classes are enhanced if they are annotated 110 with <A HREF="../../../../com/sleepycat/persist/model/Entity.html" title="annotation in com.sleepycat.persist.model"><CODE>Entity</CODE></A> or <A HREF="../../../../com/sleepycat/persist/model/Persistent.html" title="annotation in com.sleepycat.persist.model"><CODE>Persistent</CODE></A>. 111 112 <p><code>ClassEnhancer</code> objects are thread-safe. Multiple threads may 113 safely call the methods of a shared <code>ClassEnhancer</code> object.</p> 114 115 <p>As described in the <a 116 href="../package-summary.html#bytecode">package summary</a>, bytecode 117 enhancement may be used either at runtime or offline (at build time).</p> 118 119 <p>To use enhancement offline, this class may be used as a <A HREF="../../../../com/sleepycat/persist/model/ClassEnhancer.html#main(java.lang.String[])"><CODE>main 120 program</CODE></A>. It may also be used via a ClassEnhancerTask ant task: the source 121 is in the <pre>java/ext</pre> directory in Berkeley DB.</p> 122 123 <p>For enhancement at runtime, this class provides the low level support 124 needed to transform class bytes during class loading. To configure runtime 125 enhancement you may use one of the following approaches:</p> 126 <ol> 127 <li>The BDB <code>je-<version>.jar</code> or <code>db.jar</code> file may be used as 128 an instrumentation agent as follows: 129 <pre class="code">java -javaagent:<BDB-JAR-FILE>=enhance:packageNames ...</pre> 130 <code>packageNames</code> is a comma separated list of packages containing 131 persistent classes. Sub-packages of these packages are also searched. If 132 <code>packageNames</code> is omitted then all packages known to the current 133 classloader are searched. 134 <p>The "-v" option may be included in the comma separated list to print the 135 name of each class that is enhanced.</p></li> 136 <br> 137 <li>The <A HREF="../../../../com/sleepycat/persist/model/ClassEnhancer.html#enhance(java.lang.String, byte[])"><CODE>enhance(java.lang.String, byte[])</CODE></A> method may be called to implement a class loader 138 that performs enhancement. Using this approach, it is the developer's 139 responsibility to implement and configure the class loader.</li> 140 </ol> 141<P> 142 143<P> 144<HR> 145 146<P> 147 148<!-- ======== CONSTRUCTOR SUMMARY ======== --> 149 150<A NAME="constructor_summary"><!-- --></A> 151<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> 152<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> 153<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"> 154<B>Constructor Summary</B></FONT></TH> 155</TR> 156<TR BGCOLOR="white" CLASS="TableRowColor"> 157<TD><CODE><B><A HREF="../../../../com/sleepycat/persist/model/ClassEnhancer.html#ClassEnhancer()">ClassEnhancer</A></B>()</CODE> 158 159<BR> 160 Creates a class enhancer that searches all packages.</TD> 161</TR> 162<TR BGCOLOR="white" CLASS="TableRowColor"> 163<TD><CODE><B><A HREF="../../../../com/sleepycat/persist/model/ClassEnhancer.html#ClassEnhancer(java.util.Set)">ClassEnhancer</A></B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util">Set</A><<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>> packageNames)</CODE> 164 165<BR> 166 Creates a class enhancer that searches a given set of packages.</TD> 167</TR> 168</TABLE> 169 170<!-- ========== METHOD SUMMARY =========== --> 171 172<A NAME="method_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>Method Summary</B></FONT></TH> 177</TR> 178<TR BGCOLOR="white" CLASS="TableRowColor"> 179<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 180<CODE> byte[]</CODE></FONT></TD> 181<TD><CODE><B><A HREF="../../../../com/sleepycat/persist/model/ClassEnhancer.html#enhance(java.lang.String, byte[])">enhance</A></B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> className, 182 byte[] classBytes)</CODE> 183 184<BR> 185 Enhances the given class bytes if the class is annotated with <A HREF="../../../../com/sleepycat/persist/model/Entity.html" title="annotation in com.sleepycat.persist.model"><CODE>Entity</CODE></A> or <A HREF="../../../../com/sleepycat/persist/model/Persistent.html" title="annotation in com.sleepycat.persist.model"><CODE>Persistent</CODE></A>.</TD> 186</TR> 187<TR BGCOLOR="white" CLASS="TableRowColor"> 188<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 189<CODE> boolean</CODE></FONT></TD> 190<TD><CODE><B><A HREF="../../../../com/sleepycat/persist/model/ClassEnhancer.html#getVerbose()">getVerbose</A></B>()</CODE> 191 192<BR> 193 Gets verbose mode.</TD> 194</TR> 195<TR BGCOLOR="white" CLASS="TableRowColor"> 196<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 197<CODE>static void</CODE></FONT></TD> 198<TD><CODE><B><A HREF="../../../../com/sleepycat/persist/model/ClassEnhancer.html#main(java.lang.String[])">main</A></B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>[] args)</CODE> 199 200<BR> 201 Enhances classes in the directories specified.</TD> 202</TR> 203<TR BGCOLOR="white" CLASS="TableRowColor"> 204<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 205<CODE>static void</CODE></FONT></TD> 206<TD><CODE><B><A HREF="../../../../com/sleepycat/persist/model/ClassEnhancer.html#premain(java.lang.String, java.lang.instrument.Instrumentation)">premain</A></B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> args, 207 <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/instrument/Instrumentation.html?is-external=true" title="class or interface in java.lang.instrument">Instrumentation</A> inst)</CODE> 208 209<BR> 210 Enhances classes as specified by a JVM -javaagent argument.</TD> 211</TR> 212<TR BGCOLOR="white" CLASS="TableRowColor"> 213<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 214<CODE> void</CODE></FONT></TD> 215<TD><CODE><B><A HREF="../../../../com/sleepycat/persist/model/ClassEnhancer.html#setVerbose(boolean)">setVerbose</A></B>(boolean verbose)</CODE> 216 217<BR> 218 Sets verbose mode.</TD> 219</TR> 220<TR BGCOLOR="white" CLASS="TableRowColor"> 221<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 222<CODE> byte[]</CODE></FONT></TD> 223<TD><CODE><B><A HREF="../../../../com/sleepycat/persist/model/ClassEnhancer.html#transform(java.lang.ClassLoader, java.lang.String, java.lang.Class, java.security.ProtectionDomain, byte[])">transform</A></B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/ClassLoader.html?is-external=true" title="class or interface in java.lang">ClassLoader</A> loader, 224 <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> className, 225 <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A><?> classBeingRedefined, 226 <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/security/ProtectionDomain.html?is-external=true" title="class or interface in java.security">ProtectionDomain</A> protectionDomain, 227 byte[] classfileBuffer)</CODE> 228 229<BR> 230 </TD> 231</TR> 232</TABLE> 233 <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A> 234<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> 235<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"> 236<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?is-external=true" title="class or interface in java.lang">Object</A></B></TH> 237</TR> 238<TR BGCOLOR="white" CLASS="TableRowColor"> 239<TD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html?is-external=true#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?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html?is-external=true#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?is-external=true#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?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html?is-external=true#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?is-external=true#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?is-external=true#toString()" title="class or interface in java.lang">toString</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html?is-external=true#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?is-external=true#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?is-external=true#wait(long, int)" title="class or interface in java.lang">wait</A></CODE></TD> 240</TR> 241</TABLE> 242 243<P> 244 245<!-- ========= CONSTRUCTOR DETAIL ======== --> 246 247<A NAME="constructor_detail"><!-- --></A> 248<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> 249<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> 250<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"> 251<B>Constructor Detail</B></FONT></TH> 252</TR> 253</TABLE> 254 255<A NAME="ClassEnhancer()"><!-- --></A><H3> 256ClassEnhancer</H3> 257<PRE> 258public <B>ClassEnhancer</B>()</PRE> 259<DL> 260<DD>Creates a class enhancer that searches all packages. 261<P> 262</DL> 263<HR> 264 265<A NAME="ClassEnhancer(java.util.Set)"><!-- --></A><H3> 266ClassEnhancer</H3> 267<PRE> 268public <B>ClassEnhancer</B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util">Set</A><<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>> packageNames)</PRE> 269<DL> 270<DD>Creates a class enhancer that searches a given set of packages. 271<P> 272<DL> 273<DT><B>Parameters:</B><DD><CODE>packageNames</CODE> - a set of packages to search for persistent 274 classes. Sub-packages of these packages are also searched. If empty or 275 null, all packages known to the current classloader are searched.</DL> 276</DL> 277 278<!-- ============ METHOD DETAIL ========== --> 279 280<A NAME="method_detail"><!-- --></A> 281<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> 282<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> 283<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"> 284<B>Method Detail</B></FONT></TH> 285</TR> 286</TABLE> 287 288<A NAME="main(java.lang.String[])"><!-- --></A><H3> 289main</H3> 290<PRE> 291public static void <B>main</B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>[] args) 292 throws <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</A></PRE> 293<DL> 294<DD>Enhances classes in the directories specified. The class files are 295 replaced when they are enhanced, without changing the file modification 296 date. For example: 297 298 <pre class="code">java -cp je-<version>.jar com.sleepycat.persist.model.ClassEnhancer ./classes</pre> 299 300 <p>The "-v" argument may be specified to print the name of each class 301 file that is enhanced. The total number of class files enhanced will 302 always be printed.</p> 303<P> 304<DD><DL> 305</DL> 306</DD> 307<DD><DL> 308<DT><B>Parameters:</B><DD><CODE>args</CODE> - one or more directories containing classes to be enhanced. 309 Subdirectories of these directories will also be searched. Optionally, 310 -v may be included to print the name of every class file enhanced. 311<DT><B>Throws:</B> 312<DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</A></CODE></DL> 313</DD> 314</DL> 315<HR> 316 317<A NAME="premain(java.lang.String, java.lang.instrument.Instrumentation)"><!-- --></A><H3> 318premain</H3> 319<PRE> 320public static void <B>premain</B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> args, 321 <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/instrument/Instrumentation.html?is-external=true" title="class or interface in java.lang.instrument">Instrumentation</A> inst)</PRE> 322<DL> 323<DD>Enhances classes as specified by a JVM -javaagent argument. 324<P> 325<DD><DL> 326</DL> 327</DD> 328<DD><DL> 329<DT><B>See Also:</B><DD><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/instrument/Instrumentation.html?is-external=true" title="class or interface in java.lang.instrument"><CODE>Instrumentation</CODE></A></DL> 330</DD> 331</DL> 332<HR> 333 334<A NAME="setVerbose(boolean)"><!-- --></A><H3> 335setVerbose</H3> 336<PRE> 337public void <B>setVerbose</B>(boolean verbose)</PRE> 338<DL> 339<DD>Sets verbose mode. 340 341 <p>True may be specified to print the name of each class file that is 342 enhanced. This property is false by default.</p> 343<P> 344<DD><DL> 345</DL> 346</DD> 347<DD><DL> 348</DL> 349</DD> 350</DL> 351<HR> 352 353<A NAME="getVerbose()"><!-- --></A><H3> 354getVerbose</H3> 355<PRE> 356public boolean <B>getVerbose</B>()</PRE> 357<DL> 358<DD>Gets verbose mode. 359<P> 360<DD><DL> 361</DL> 362</DD> 363<DD><DL> 364<DT><B>See Also:</B><DD><A HREF="../../../../com/sleepycat/persist/model/ClassEnhancer.html#setVerbose(boolean)"><CODE>setVerbose(boolean)</CODE></A></DL> 365</DD> 366</DL> 367<HR> 368 369<A NAME="transform(java.lang.ClassLoader, java.lang.String, java.lang.Class, java.security.ProtectionDomain, byte[])"><!-- --></A><H3> 370transform</H3> 371<PRE> 372public byte[] <B>transform</B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/ClassLoader.html?is-external=true" title="class or interface in java.lang">ClassLoader</A> loader, 373 <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> className, 374 <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A><?> classBeingRedefined, 375 <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/security/ProtectionDomain.html?is-external=true" title="class or interface in java.security">ProtectionDomain</A> protectionDomain, 376 byte[] classfileBuffer)</PRE> 377<DL> 378<DD><DL> 379<DT><B>Specified by:</B><DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/instrument/ClassFileTransformer.html?is-external=true#transform(java.lang.ClassLoader, java.lang.String, java.lang.Class, java.security.ProtectionDomain, byte[])" title="class or interface in java.lang.instrument">transform</A></CODE> in interface <CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/instrument/ClassFileTransformer.html?is-external=true" title="class or interface in java.lang.instrument">ClassFileTransformer</A></CODE></DL> 380</DD> 381<DD><DL> 382</DL> 383</DD> 384</DL> 385<HR> 386 387<A NAME="enhance(java.lang.String, byte[])"><!-- --></A><H3> 388enhance</H3> 389<PRE> 390public byte[] <B>enhance</B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> className, 391 byte[] classBytes)</PRE> 392<DL> 393<DD>Enhances the given class bytes if the class is annotated with <A HREF="../../../../com/sleepycat/persist/model/Entity.html" title="annotation in com.sleepycat.persist.model"><CODE>Entity</CODE></A> or <A HREF="../../../../com/sleepycat/persist/model/Persistent.html" title="annotation in com.sleepycat.persist.model"><CODE>Persistent</CODE></A>. 394<P> 395<DD><DL> 396</DL> 397</DD> 398<DD><DL> 399<DT><B>Parameters:</B><DD><CODE>className</CODE> - the class name in binary format; for example, 400 "my.package.MyClass$Name", or null if no filtering by class name 401 should be performed.<DD><CODE>classBytes</CODE> - are the class file bytes to be enhanced. 402<DT><B>Returns:</B><DD>the enhanced bytes, or null if no enhancement was performed.</DL> 403</DD> 404</DL> 405<!-- ========= END OF CLASS DATA ========= --> 406<HR> 407 408 409<!-- ======= START OF BOTTOM NAVBAR ====== --> 410<A NAME="navbar_bottom"><!-- --></A> 411<A HREF="#skip-navbar_bottom" title="Skip navigation links"></A> 412<TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""> 413<TR> 414<TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> 415<A NAME="navbar_bottom_firstrow"><!-- --></A> 416<TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> 417 <TR ALIGN="center" VALIGN="top"> 418 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> 419 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> 420 <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> 421 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/ClassEnhancer.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> 422 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> 423 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> 424 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> 425 <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> 426 </TR> 427</TABLE> 428</TD> 429<TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM> 430<b>Berkeley DB</b><br><font size="-1"> version 4.8.30</font></EM> 431</TD> 432</TR> 433 434<TR> 435<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> 436 <A HREF="../../../../com/sleepycat/persist/model/AnnotationModel.html" title="class in com.sleepycat.persist.model"><B>PREV CLASS</B></A> 437 <A HREF="../../../../com/sleepycat/persist/model/ClassMetadata.html" title="class in com.sleepycat.persist.model"><B>NEXT CLASS</B></A></FONT></TD> 438<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> 439 <A HREF="../../../../index.html?com/sleepycat/persist/model/ClassEnhancer.html" target="_top"><B>FRAMES</B></A> 440 <A HREF="ClassEnhancer.html" target="_top"><B>NO FRAMES</B></A> 441 <SCRIPT type="text/javascript"> 442 <!-- 443 if(window==top) { 444 document.writeln('<A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A>'); 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