Author: hlship
Date: Sun Apr 10 01:54:49 2011
New Revision: 1090732
URL: http://svn.apache.org/viewvc?rev=1090732&view=rev
Log:
TAP5-853: Introduce a method on PlasticProxyFactory that creates a proxy
instance from an interface type and an ObjectCreator
Modified:
tapestry/tapestry5/trunk/tapestry-ioc/src/main/java/org/apache/tapestry5/ioc/internal/services/PlasticProxyFactoryImpl.java
tapestry/tapestry5/trunk/tapestry-ioc/src/main/java/org/apache/tapestry5/ioc/services/PlasticProxyFactory.java
Modified:
tapestry/tapestry5/trunk/tapestry-ioc/src/main/java/org/apache/tapestry5/ioc/internal/services/PlasticProxyFactoryImpl.java
URL:
http://svn.apache.org/viewvc/tapestry/tapestry5/trunk/tapestry-ioc/src/main/java/org/apache/tapestry5/ioc/internal/services/PlasticProxyFactoryImpl.java?rev=1090732&r1=1090731&r2=1090732&view=diff
==============================================================================
---
tapestry/tapestry5/trunk/tapestry-ioc/src/main/java/org/apache/tapestry5/ioc/internal/services/PlasticProxyFactoryImpl.java
(original)
+++
tapestry/tapestry5/trunk/tapestry-ioc/src/main/java/org/apache/tapestry5/ioc/internal/services/PlasticProxyFactoryImpl.java
Sun Apr 10 01:54:49 2011
@@ -1,10 +1,21 @@
package org.apache.tapestry5.ioc.internal.services;
+import java.lang.reflect.Method;
+import java.lang.reflect.Modifier;
+
+import org.apache.tapestry5.ioc.ObjectCreator;
+import org.apache.tapestry5.ioc.internal.util.InternalUtils;
import org.apache.tapestry5.ioc.services.PlasticProxyFactory;
import org.apache.tapestry5.plastic.ClassInstantiator;
+import org.apache.tapestry5.plastic.InstructionBuilder;
+import org.apache.tapestry5.plastic.InstructionBuilderCallback;
+import org.apache.tapestry5.plastic.MethodDescription;
+import org.apache.tapestry5.plastic.PlasticClass;
import org.apache.tapestry5.plastic.PlasticClassTransformation;
import org.apache.tapestry5.plastic.PlasticClassTransformer;
+import org.apache.tapestry5.plastic.PlasticField;
import org.apache.tapestry5.plastic.PlasticManager;
+import org.apache.tapestry5.plastic.PlasticMethod;
public class PlasticProxyFactoryImpl implements PlasticProxyFactory
{
@@ -30,4 +41,43 @@ public class PlasticProxyFactoryImpl imp
return manager.createProxyTransformation(interfaceType);
}
+ public <T> T createProxy(final Class<T> interfaceType, final
ObjectCreator<T> creator, final String description)
+ {
+ assert creator != null;
+ assert InternalUtils.isNonBlank(description);
+
+ ClassInstantiator instantiator = createProxy(interfaceType, new
PlasticClassTransformer()
+ {
+ public void transform(PlasticClass plasticClass)
+ {
+ final PlasticField objectCreatorField =
plasticClass.introduceField(ObjectCreator.class, "creator")
+ .inject(creator);
+
+ PlasticMethod delegateMethod =
plasticClass.introducePrivateMethod(interfaceType.getName(), "delegate",
+ null, null);
+
+ delegateMethod.changeImplementation(new
InstructionBuilderCallback()
+ {
+ public void doBuild(InstructionBuilder builder)
+ {
+ builder.loadThis().getField(objectCreatorField);
+ builder.invoke(ObjectCreator.class, Object.class,
"createObject");
+ builder.checkcast(interfaceType).returnResult();
+ }
+ });
+
+ for (Method method : interfaceType.getMethods())
+ {
+
plasticClass.introduceMethod(method).delegateTo(delegateMethod);
+ }
+
+ plasticClass.addToString(description);
+
+ // TODO: Copy annotations from delegate?
+ }
+ });
+
+ return interfaceType.cast(instantiator.newInstance());
+ }
+
}
Modified:
tapestry/tapestry5/trunk/tapestry-ioc/src/main/java/org/apache/tapestry5/ioc/services/PlasticProxyFactory.java
URL:
http://svn.apache.org/viewvc/tapestry/tapestry5/trunk/tapestry-ioc/src/main/java/org/apache/tapestry5/ioc/services/PlasticProxyFactory.java?rev=1090732&r1=1090731&r2=1090732&view=diff
==============================================================================
---
tapestry/tapestry5/trunk/tapestry-ioc/src/main/java/org/apache/tapestry5/ioc/services/PlasticProxyFactory.java
(original)
+++
tapestry/tapestry5/trunk/tapestry-ioc/src/main/java/org/apache/tapestry5/ioc/services/PlasticProxyFactory.java
Sun Apr 10 01:54:49 2011
@@ -14,6 +14,7 @@
package org.apache.tapestry5.ioc.services;
+import org.apache.tapestry5.ioc.ObjectCreator;
import org.apache.tapestry5.plastic.ClassInstantiator;
import org.apache.tapestry5.plastic.PlasticClassTransformation;
import org.apache.tapestry5.plastic.PlasticClassTransformer;
@@ -53,4 +54,22 @@ public interface PlasticProxyFactory
* @return transformation from which an instantiator may be created
*/
PlasticClassTransformation createProxyTransformation(Class interfaceType);
+
+ /**
+ * Creates a proxy instance that delegates all methods through a
corresponding
+ * ObjectCreator. Each method invocation on the proxy will route through
{@link ObjectCreator#createObject()} (the
+ * creator implementation may decide to
+ * cache the return value as appropriate).
+ *
+ * @param <T>
+ * type of proxy
+ * @param interfaceType
+ * interface class for proxy
+ * @param creator
+ * object responsible for creating the real object
+ * @param description
+ * the <code>toString()</code> of the proxy
+ * @return proxy instance
+ */
+ <T> T createProxy(Class<T> interfaceType, ObjectCreator<T> creator, String
description);
}
