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| org.apache.openjpa.enhance</FONT> |
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| Class PCEnhancerAgent</H2> |
| <PRE> |
| <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> |
| <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>org.apache.openjpa.enhance.PCEnhancerAgent</B> |
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| <DT><PRE>public class <B>PCEnhancerAgent</B><DT>extends <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></DL> |
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| <p>Java agent that makes persistent classes work with OpenJPA at runtime. |
| This is achieved by either running the enhancer on the classes as they |
| are loaded, or by redefining the classes on the fly. |
| The agent is launched at JVM startup from the command line:</p> |
| |
| <p><code>java -javaagent:openjpa.jar[=<options>]</code> |
| The options string should be formatted as a OpenJPA plugin, and may |
| contain any properties understood by the OpenJPA enhancer or any |
| configuration properties. For example:</p> |
| |
| <p><code>java -javaagent:openjpa.jar</code></p> |
| |
| <p>By default, if specified, the agent runs the OpenJPA enhancer on |
| all classes listed in the first persistence unit as they are loaded, |
| and redefines all other persistent classes when they are encountered. |
| To disable enhancement at class-load time and rely solely on the |
| redefinition logic, set the ClassLoadEnhancement flag to false. To |
| disable redefinition and rely solely on pre-deployment or class-load |
| enhancement, set the RuntimeRedefinition flag to false. |
| </p> |
| |
| <p><code>java -javaagent:openjpa.jar=ClassLoadEnhancement=false</code></p> |
| <P> |
| |
| <P> |
| <DL> |
| <DT><B>Author:</B></DT> |
| <DD>Abe White, Patrick Linskey</DD> |
| </DL> |
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| <!-- ======== CONSTRUCTOR SUMMARY ======== --> |
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| <TD><CODE><B><A HREF="../../../../org/apache/openjpa/enhance/PCEnhancerAgent.html#PCEnhancerAgent()">PCEnhancerAgent</A></B>()</CODE> |
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| <CODE>static void</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../../org/apache/openjpa/enhance/PCEnhancerAgent.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" title="class or interface in java.lang">String</A> args, |
| <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/instrument/Instrumentation.html" title="class or interface in java.lang.instrument">Instrumentation</A> inst)</CODE> |
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| |
| <A NAME="PCEnhancerAgent()"><!-- --></A><H3> |
| PCEnhancerAgent</H3> |
| <PRE> |
| public <B>PCEnhancerAgent</B>()</PRE> |
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| </DL> |
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| premain</H3> |
| <PRE> |
| public static void <B>premain</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> args, |
| <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/instrument/Instrumentation.html" title="class or interface in java.lang.instrument">Instrumentation</A> inst)</PRE> |
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