content/builds/2.0.0/apache-openjpa-2.0.0/docs/javadoc/org/apache/openjpa/enhance/PCEnhancerAgent.html - openjpa-site - Git at Google

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 PCEnhancerAgent (OpenJPA Parent POM 2.0.0 API)
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 <FONT SIZE="-1">
 org.apache.openjpa.enhance</FONT>
 <BR>
 Class PCEnhancerAgent</H2>
 <PRE>
 <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>
   <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>org.apache.openjpa.enhance.PCEnhancerAgent</B>
 </PRE>
 <HR>
 <DL>
 <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?is-external=true" title="class or interface in java.lang">Object</A></DL>
 </PRE>

 <P>
 <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[=&lt;options&gt;]</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>
 <HR>

 <P>

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

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 <TR BGCOLOR="white" CLASS="TableRowColor">
 <TD><CODE><B><A HREF="../../../../org/apache/openjpa/enhance/PCEnhancerAgent.html#PCEnhancerAgent()">PCEnhancerAgent</A></B>()</CODE>

 <BR>
 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
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 <!-- ========== METHOD SUMMARY =========== -->

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 <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
 <CODE>static&nbsp;void</CODE></FONT></TD>
 <TD><CODE><B><A HREF="../../../../org/apache/openjpa/enhance/PCEnhancerAgent.html#disableDynamicAgent()">disableDynamicAgent</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>static&nbsp;boolean</CODE></FONT></TD>
 <TD><CODE><B><A HREF="../../../../org/apache/openjpa/enhance/PCEnhancerAgent.html#getLoadSuccessful()">getLoadSuccessful</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>static&nbsp;boolean</CODE></FONT></TD>
 <TD><CODE><B><A HREF="../../../../org/apache/openjpa/enhance/PCEnhancerAgent.html#loadDynamicAgent(org.apache.openjpa.lib.log.Log)">loadDynamicAgent</A></B>(<A HREF="../../../../org/apache/openjpa/lib/log/Log.html" title="interface in org.apache.openjpa.lib.log">Log</A>&nbsp;log)</CODE>

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 &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>static&nbsp;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?is-external=true" title="class or interface in java.lang">String</A>&nbsp;args,
         <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>&nbsp;inst)</CODE>

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 <TR BGCOLOR="white" CLASS="TableRowColor">
 <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>
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 <A NAME="PCEnhancerAgent()"><!-- --></A><H3>
 PCEnhancerAgent</H3>
 <PRE>
 public <B>PCEnhancerAgent</B>()</PRE>
 <DL>
 </DL>

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

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 <A NAME="getLoadSuccessful()"><!-- --></A><H3>
 getLoadSuccessful</H3>
 <PRE>
 public static boolean <B>getLoadSuccessful</B>()</PRE>
 <DL>
 <DD><DL>

 <DT><B>Returns:</B><DD>True if the Agent has ran successfully. False otherwise.</DL>
 </DD>
 </DL>
 <HR>

 <A NAME="disableDynamicAgent()"><!-- --></A><H3>
 disableDynamicAgent</H3>
 <PRE>
 public static void <B>disableDynamicAgent</B>()</PRE>
 <DL>
 <DD><DL>
 </DL>
 </DD>
 </DL>
 <HR>

 <A NAME="loadDynamicAgent(org.apache.openjpa.lib.log.Log)"><!-- --></A><H3>
 loadDynamicAgent</H3>
 <PRE>
 public static boolean <B>loadDynamicAgent</B>(<A HREF="../../../../org/apache/openjpa/lib/log/Log.html" title="interface in org.apache.openjpa.lib.log">Log</A>&nbsp;log)</PRE>
 <DL>
 <DD><DL>
 <DT><B>Parameters:</B><DD><CODE>log</CODE> -
 <DT><B>Returns:</B><DD>True if the agent is loaded successfully</DL>
 </DD>
 </DL>
 <HR>

 <A NAME="premain(java.lang.String, java.lang.instrument.Instrumentation)"><!-- --></A><H3>
 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?is-external=true" title="class or interface in java.lang">String</A>&nbsp;args,
                            <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>&nbsp;inst)</PRE>
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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?is-external=true" 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>
	</PRE>
	<HR>
	<DL>
	<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?is-external=true" title="class or interface in java.lang">Object</A></DL>
	</PRE>

	<P>
	<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>
	<HR>

	<P>

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

	<A NAME="constructor_summary"><!-- --></A>
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	<B>Constructor Summary</B></FONT></TH>
	</TR>
	<TR BGCOLOR="white" CLASS="TableRowColor">
	<TD><CODE><B><A HREF="../../../../org/apache/openjpa/enhance/PCEnhancerAgent.html#PCEnhancerAgent()">PCEnhancerAgent</A></B>()</CODE>

	<BR>
	</TD>
	</TR>
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	<!-- ========== METHOD SUMMARY =========== -->

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	<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
	<B>Method Summary</B></FONT></TH>
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	<TR BGCOLOR="white" CLASS="TableRowColor">
	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
	<CODE>static void</CODE></FONT></TD>
	<TD><CODE><B><A HREF="../../../../org/apache/openjpa/enhance/PCEnhancerAgent.html#disableDynamicAgent()">disableDynamicAgent</A></B>()</CODE>

	<BR>
	</TD>
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	<TR BGCOLOR="white" CLASS="TableRowColor">
	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
	<CODE>static boolean</CODE></FONT></TD>
	<TD><CODE><B><A HREF="../../../../org/apache/openjpa/enhance/PCEnhancerAgent.html#getLoadSuccessful()">getLoadSuccessful</A></B>()</CODE>

	<BR>
	</TD>
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	<TR BGCOLOR="white" CLASS="TableRowColor">
	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
	<CODE>static boolean</CODE></FONT></TD>
	<TD><CODE><B><A HREF="../../../../org/apache/openjpa/enhance/PCEnhancerAgent.html#loadDynamicAgent(org.apache.openjpa.lib.log.Log)">loadDynamicAgent</A></B>(<A HREF="../../../../org/apache/openjpa/lib/log/Log.html" title="interface in org.apache.openjpa.lib.log">Log</A> log)</CODE>

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	<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
	<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?is-external=true" 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?is-external=true" title="class or interface in java.lang.instrument">Instrumentation</A> inst)</CODE>

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	<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>
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	<TR BGCOLOR="white" CLASS="TableRowColor">
	<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>
	</TR>
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	<P>

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

	<A NAME="constructor_detail"><!-- --></A>
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	<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
	<B>Constructor Detail</B></FONT></TH>
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	</TABLE>

	<A NAME="PCEnhancerAgent()"><!-- --></A><H3>
	PCEnhancerAgent</H3>
	<PRE>
	public <B>PCEnhancerAgent</B>()</PRE>
	<DL>
	</DL>

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

	<A NAME="method_detail"><!-- --></A>
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	<B>Method Detail</B></FONT></TH>
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	<A NAME="getLoadSuccessful()"><!-- --></A><H3>
	getLoadSuccessful</H3>
	<PRE>
	public static boolean <B>getLoadSuccessful</B>()</PRE>
	<DL>
	<DD><DL>

	<DT><B>Returns:</B><DD>True if the Agent has ran successfully. False otherwise.</DL>
	</DD>
	</DL>
	<HR>

	<A NAME="disableDynamicAgent()"><!-- --></A><H3>
	disableDynamicAgent</H3>
	<PRE>
	public static void <B>disableDynamicAgent</B>()</PRE>
	<DL>
	<DD><DL>
	</DL>
	</DD>
	</DL>
	<HR>

	<A NAME="loadDynamicAgent(org.apache.openjpa.lib.log.Log)"><!-- --></A><H3>
	loadDynamicAgent</H3>
	<PRE>
	public static boolean <B>loadDynamicAgent</B>(<A HREF="../../../../org/apache/openjpa/lib/log/Log.html" title="interface in org.apache.openjpa.lib.log">Log</A> log)</PRE>
	<DL>
	<DD><DL>
	<DT><B>Parameters:</B><DD><CODE>log</CODE> -
	<DT><B>Returns:</B><DD>True if the agent is loaded successfully</DL>
	</DD>
	</DL>
	<HR>

	<A NAME="premain(java.lang.String, java.lang.instrument.Instrumentation)"><!-- --></A><H3>
	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?is-external=true" 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?is-external=true" title="class or interface in java.lang.instrument">Instrumentation</A> inst)</PRE>
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