Author: sebb
Date: Sat Apr  1 09:20:47 2006
New Revision: 390698

URL: http://svn.apache.org/viewcvs?rev=390698&view=rev
Log:
Initial implementation of converter to skip default new fields

Added:
    
jakarta/jmeter/branches/rel-2-1/src/core/org/apache/jmeter/save/converters/SampleSaveConfigurationConverter.java
   (with props)

Added: 
jakarta/jmeter/branches/rel-2-1/src/core/org/apache/jmeter/save/converters/SampleSaveConfigurationConverter.java
URL: 
http://svn.apache.org/viewcvs/jakarta/jmeter/branches/rel-2-1/src/core/org/apache/jmeter/save/converters/SampleSaveConfigurationConverter.java?rev=390698&view=auto
==============================================================================
--- 
jakarta/jmeter/branches/rel-2-1/src/core/org/apache/jmeter/save/converters/SampleSaveConfigurationConverter.java
 (added)
+++ 
jakarta/jmeter/branches/rel-2-1/src/core/org/apache/jmeter/save/converters/SampleSaveConfigurationConverter.java
 Sat Apr  1 09:20:47 2006
@@ -0,0 +1,111 @@
+/*
+ * Copyright 2006 The Apache Software Foundation.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * 
+ */
+
+package org.apache.jmeter.save.converters;
+
+import org.apache.jmeter.samplers.SampleSaveConfiguration;
+
+import com.thoughtworks.xstream.alias.ClassMapper;
+import com.thoughtworks.xstream.converters.MarshallingContext;
+import com.thoughtworks.xstream.converters.reflection.ReflectionConverter;
+import com.thoughtworks.xstream.converters.reflection.ReflectionProvider;
+import com.thoughtworks.xstream.core.JVM;
+import com.thoughtworks.xstream.io.HierarchicalStreamWriter;
+import com.thoughtworks.xstream.mapper.MapperWrapper;
+
+/*
+ * Allow new fields to be added to the SampleSaveConfiguration without
+ * changing the output JMX file unless it is necessary. 
+ * 
+ * TODO work out how to make shouldSerializeMember() conditionally return true.
+ */
+public class SampleSaveConfigurationConverter  extends ReflectionConverter {
+
+    private static final ReflectionProvider rp = new 
JVM().bestReflectionProvider();
+
+    static class MyWrapper extends MapperWrapper{
+
+        public MyWrapper(ClassMapper wrapped) {
+            super(wrapped);
+        }
+        
+        public boolean shouldSerializeMember(Class definedIn, String 
fieldName) {
+            if (SampleSaveConfiguration.class != definedIn) return true;
+            if (fieldName.equals("url")) return false; 
+            if (fieldName.equals("bytes")) return false; 
+            return true;
+        }
+    }
+       public SampleSaveConfigurationConverter(ClassMapper arg0) {
+        super(new MyWrapper(arg0),rp);
+    }
+
+    /**
+        * Returns the converter version; used to check for possible
+        * incompatibilities
+        */
+       public static String getVersion() {
+               return "$Revision$"; // $NON-NLS-1$
+       }
+
+       /*
+        * (non-Javadoc)
+        * 
+        * @see 
com.thoughtworks.xstream.converters.Converter#canConvert(java.lang.Class)
+        */
+       public boolean canConvert(Class arg0) {
+               return arg0.equals(SampleSaveConfiguration.class);
+       }
+
+       /*
+        * (non-Javadoc)
+        * 
+        * @see 
com.thoughtworks.xstream.converters.Converter#marshal(java.lang.Object,
+        *      com.thoughtworks.xstream.io.HierarchicalStreamWriter,
+        *      com.thoughtworks.xstream.converters.MarshallingContext)
+        */
+       public void marshal(Object obj, HierarchicalStreamWriter writer, 
MarshallingContext context) {
+        super.marshal(obj, writer, context); // Save most things
+        
+        SampleSaveConfiguration prop = (SampleSaveConfiguration) obj;
+        
+        // Save the new fields - but only if they are not the default
+        if (prop.saveBytes())
+        {
+            writer.startNode("bytes");
+            writer.setValue("true");
+            writer.endNode();
+        }
+        if (prop.saveUrl())
+        {
+            writer.startNode("url");
+            writer.setValue("true");
+            writer.endNode();
+        }
+       }
+
+       /*
+        * (non-Javadoc)
+        * 
+        * @see 
com.thoughtworks.xstream.converters.Converter#unmarshal(com.thoughtworks.xstream.io.HierarchicalStreamReader,
+        *      com.thoughtworks.xstream.converters.UnmarshallingContext)
+        */
+//     public Object unmarshal(HierarchicalStreamReader reader, 
UnmarshallingContext arg1) {
+//        SampleSaveConfiguration prop = new SampleSaveConfiguration();
+//             return prop;
+//     }
+}

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