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<P><FONT SIZE=2 FACE="Arial">Hi,</FONT>
</P>
<P><FONT SIZE=2 FACE="Arial">I am fronting my rule engine by a stateless session façade bean, running in a weblogic container. The rule bases are loaded only once via a singleton. </FONT></P>
<P><FONT SIZE=2 FACE="Arial">I was running a profiler over the app and have noticed a lot of rule engine objects still attached to the tree. My stub which invokes the working memory looks like the following: </FONT></P>
<P><B><FONT COLOR="#7F0055" SIZE=2 FACE="Courier New">try</FONT></B><FONT COLOR="#000000" SIZE=2 FACE="Courier New"> {</FONT>
<BR> <FONT COLOR="#000000" SIZE=2 FACE="Courier New">handle = wm.assertObject(shift);</FONT>
<BR> <FONT COLOR="#000000" SIZE=2 FACE="Courier New">wm.assertObject(shiftCalculator);</FONT>
<BR> <FONT COLOR="#000000" SIZE=2 FACE="Courier New">wm.fireAllRules();</FONT>
<BR><FONT COLOR="#000000" SIZE=2 FACE="Courier New">}</FONT><B> <FONT COLOR="#7F0055" SIZE=2 FACE="Courier New">catch</FONT></B><FONT COLOR="#000000" SIZE=2 FACE="Courier New"> (RuntimeDroolsException e) {</FONT>
<BR> <B> <FONT COLOR="#7F0055" SIZE=2 FACE="Courier New">throw</FONT></B><FONT COLOR="#000000" SIZE=2 FACE="Courier New"></FONT><B> <FONT COLOR="#7F0055" SIZE=2 FACE="Courier New">new</FONT></B><FONT COLOR="#000000" SIZE=2 FACE="Courier New"> TimesheetServiceUnavailableException(</FONT>
<BR> <FONT COLOR="#2A00FF" SIZE=2 FACE="Courier New">"Could not add shift to Working Memory"</FONT><FONT COLOR="#000000" SIZE=2 FACE="Courier New">, e);</FONT>
<BR><FONT COLOR="#000000" SIZE=2 FACE="Courier New">}</FONT>
<BR><FONT COLOR="#000000" SIZE=2 FACE="Courier New">wm.clearAgenda();</FONT>
<BR><FONT COLOR="#000000" SIZE=2 FACE="Courier New">wm.dispose();</FONT>
<BR><FONT COLOR="#000000" SIZE=2 FACE="Courier New">LoggingUtils.<I>logMethodFinish</I>(</FONT><I><FONT COLOR="#0000C0" SIZE=2 FACE="Courier New">logger</FONT></I><FONT COLOR="#000000" SIZE=2 FACE="Courier New">, methodName);</FONT>
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<P><FONT SIZE=2 FACE="Arial">As you can see if an exception occurs then the dispose method is not run. Could this lead to memory leakage?</FONT>
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<P><FONT SIZE=2 FACE="Arial">I have subsequently modified the offending stub to include a finally block</FONT>
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<P><B><FONT COLOR="#7F0055" SIZE=2 FACE="Courier New">finally</FONT></B><FONT COLOR="#000000" SIZE=2 FACE="Courier New"> {</FONT>
<BR> <FONT COLOR="#000000" SIZE=2 FACE="Courier New">wm.clearAgenda();</FONT>
<BR> <FONT COLOR="#000000" SIZE=2 FACE="Courier New">wm.dispose();</FONT>
<BR> <FONT COLOR="#000000" SIZE=2 FACE="Courier New">LoggingUtils.</FONT><I><FONT COLOR="#000000" SIZE=2 FACE="Courier New">logMethodFinish</FONT></I><FONT COLOR="#000000" SIZE=2 FACE="Courier New">(</FONT><I><FONT COLOR="#0000C0" SIZE=2 FACE="Courier New">logger</FONT></I><FONT COLOR="#000000" SIZE=2 FACE="Courier New">, methodName);</FONT>
<BR><FONT COLOR="#000000" SIZE=2 FACE="Courier New">}</FONT>
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<P><FONT SIZE=2 FACE="Arial">Matt Shaw</FONT>
<BR><FONT SIZE=2 FACE="Arial">Snr Applications Developer</FONT>
<BR><FONT SIZE=2 FACE="Arial">Service Performance & Management Unit</FONT>
<BR><FONT SIZE=2 FACE="Arial">Phone: 3247 8666. ext. 94666</FONT>
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