svn commit: r651025 - /webservices/axis2/trunk/java/modules/jaxws/test/org/apache/axis2/jaxws/message/MessageTests.java

[sc...@apache.org]

Author: scheu
Date: Wed Apr 23 12:36:31 2008
New Revision: 651025

URL: http://svn.apache.org/viewvc?rev=651025&view=rev
Log:
Test Change Only
Contributor:Rich Scheuerle
The MessageTest unit test is a simulation of the flow for receiving a message and unmarshalling it.
It checks that certain constraints are met. 

I added checks to make sure that the JAXBContext is cached, so that we don't 
have expensive JAXBContext.newInstance() calls.  And the checks make sure the JAXBContext is properly 
garbage collected (JAXBContexts can be absurdly large and lead to out of memory situations.)

The test changes validate that the current code is working correctly.

Modified:
    webservices/axis2/trunk/java/modules/jaxws/test/org/apache/axis2/jaxws/message/MessageTests.java

Modified: webservices/axis2/trunk/java/modules/jaxws/test/org/apache/axis2/jaxws/message/MessageTests.java
URL: http://svn.apache.org/viewvc/webservices/axis2/trunk/java/modules/jaxws/test/org/apache/axis2/jaxws/message/MessageTests.java?rev=651025&r1=651024&r2=651025&view=diff
==============================================================================
--- webservices/axis2/trunk/java/modules/jaxws/test/org/apache/axis2/jaxws/message/MessageTests.java (original)
+++ webservices/axis2/trunk/java/modules/jaxws/test/org/apache/axis2/jaxws/message/MessageTests.java Wed Apr 23 12:36:31 2008
@@ -30,6 +30,7 @@
 import org.apache.axis2.datasource.jaxb.JAXBDataSource;
 import org.apache.axis2.jaxws.TestLogger;
 import org.apache.axis2.jaxws.message.databinding.JAXBBlockContext;
+import org.apache.axis2.jaxws.message.databinding.JAXBUtils;
 import org.apache.axis2.jaxws.message.factory.JAXBBlockFactory;
 import org.apache.axis2.jaxws.message.factory.MessageFactory;
 import org.apache.axis2.jaxws.message.factory.SAAJConverterFactory;
@@ -39,6 +40,7 @@
 import test.EchoStringResponse;
 import test.ObjectFactory;
 
+import javax.xml.bind.JAXBContext;
 import javax.xml.namespace.QName;
 import javax.xml.soap.SOAPEnvelope;
 import javax.xml.soap.SOAPMessage;
@@ -46,6 +48,7 @@
 import javax.xml.stream.XMLStreamReader;
 import java.io.ByteArrayOutputStream;
 import java.io.StringReader;
+import java.util.TreeSet;
 
 /**
  * MessageTests
@@ -806,8 +809,9 @@
         StAXSOAPModelBuilder builder = new StAXSOAPModelBuilder(inflow, null);
         OMElement omElement = builder.getSOAPEnvelope();
         
+        JAXBDSContext jds = null;
         if (installJAXBCustomBuilder) {
-            JAXBDSContext jds = new JAXBDSContext(EchoStringResponse.class.getPackage().getName());
+            jds = new JAXBDSContext(EchoStringResponse.class.getPackage().getName());
             JAXBCustomBuilder jcb = new JAXBCustomBuilder(jds);
             builder.registerCustomBuilderForPayload(jcb);
         }
@@ -823,6 +827,53 @@
         assertTrue(!isFault);
         assertTrue("XMLPart Representation is " + m.getXMLPartContentType(),
                     "OM".equals(m.getXMLPartContentType()));
+        
+        if (installJAXBCustomBuilder) {
+            // The JAXBDSContext and the JAXBUtils access the JAXBContext
+            // for the "test" package.
+            // The JAXBContext creation is very expensive.
+            // However the JAXBContext can also be very large.
+            // 
+            // For these reasons, the JAXBUtils code caches the JAXBContext values.
+            // And, the JAXBDSContext and JAXBUtils code use WeakReferences to refer 
+            // to the JAXBContext (so that it is easily gc'd).
+            
+            // The following code checks makes sure that the caching and gc is correct.
+            
+            // Get the JAXBContext
+            JAXBContext context = jds.getJAXBContext();
+            
+            // Get the identity hash code.  This is an indicator of the unique memory pointer
+            // for the context.
+            int contextPointer = System.identityHashCode(context);
+            
+            // Release our access to the context.
+            // Now the only accesses in the system should be "weak refs"
+            context = null;
+            
+            // Force garbage collection
+            System.gc();
+            
+            // Get a new context from JAXBUtils
+            TreeSet<String> packages = new TreeSet<String>();
+            packages.add(EchoStringResponse.class.getPackage().getName());
+            context = JAXBUtils.getJAXBContext(packages);
+            
+            // This new context should have a different pointer than the original
+            int contextPointer2 = System.identityHashCode(context);
+            assertTrue(contextPointer != contextPointer2);
+            
+            // Release the hold on the context
+            context = null;
+            
+            // Now call JAXBUtils again to get a JAXBContext.
+            // Since there was no intervening gc(), it should return the cached value
+            context = JAXBUtils.getJAXBContext(packages);
+            int contextPointer3 = System.identityHashCode(context);
+            assertTrue(contextPointer3 == contextPointer2);
+            
+           
+        }
         
         String saveMsgText = "";
         if (persist == SAVE_AND_PERSIST) {



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