354470

org.aspectj.matcher/src/org/aspectj/weaver/patterns/HasMemberTypePattern.java

@@ -24,6 +24,7 @@ import org.aspectj.weaver.CompressingDataOutputStream;
 import org.aspectj.weaver.ConcreteTypeMunger;
 import org.aspectj.weaver.ISourceContext;
 import org.aspectj.weaver.Member;
+import org.aspectj.weaver.ResolvedMember;
 import org.aspectj.weaver.ResolvedType;
 import org.aspectj.weaver.VersionedDataInputStream;
 import org.aspectj.weaver.WeaverMessages;
@@ -50,7 +51,7 @@ public class HasMemberTypePattern extends TypePattern {
 			return hasMethod(type);
 		}
 	}
-	
+
 	public ISignaturePattern getSignaturePattern() {
 		return signaturePattern;
 	}
@@ -77,10 +78,10 @@ public class HasMemberTypePattern extends TypePattern {
 		return false;
 	}
 
-	private boolean hasMethod(ResolvedType type) {
+	protected boolean hasMethod(ResolvedType type) {
 		// TODO what about ITDs
 		World world = type.getWorld();
-		for (Iterator iter = type.getMethods(true, true); iter.hasNext();) {
+		for (Iterator<ResolvedMember> iter = type.getMethods(true, true); iter.hasNext();) {
 			Member method = (Member) iter.next();
 			if (method.getName().startsWith(declareAtPrefix)) {
 				continue;
@@ -94,7 +95,7 @@ public class HasMemberTypePattern extends TypePattern {
 				return true;
 			}
 		}
-		// try itds before we give up
+		// try itds before we give up (this doesnt find annotations - the signature returned may not include them)
 		List<ConcreteTypeMunger> mungers = type.getInterTypeMungersIncludingSupers();
 		for (Iterator<ConcreteTypeMunger> iter = mungers.iterator(); iter.hasNext();) {
 			ConcreteTypeMunger munger = iter.next();

org.aspectj.matcher/src/org/aspectj/weaver/patterns/HasMemberTypePatternForPerThisMatching.java

@@ -0,0 +1,65 @@
+/* *******************************************************************
+ * Copyright (c) 2011 Contributors.
+ * All rights reserved. 
+ * This program and the accompanying materials are made available 
+ * under the terms of the Eclipse Public License v1.0 
+ * which accompanies this distribution and is available at 
+ * http://eclipse.org/legal/epl-v10.html 
+ *  
+ * Contributors: 
+ *   Andy Clement			Initial implementation
+ * ******************************************************************/
+package org.aspectj.weaver.patterns;
+
+import java.io.IOException;
+import java.util.List;
+
+import org.aspectj.weaver.CompressingDataOutputStream;
+import org.aspectj.weaver.ConcreteTypeMunger;
+import org.aspectj.weaver.ResolvedType;
+
+/**
+ * pr354470. This is a special subtype of HasMemberTypePattern. In order to optimize this situation: <br>
+ * <code><pre>
+ * aspect X perthis(transactional()) {<br>
+ * pointcut transactional: execution(@Foo * *(..));<br>
+ * </pre></code>
+ * <p>
+ * When this occurs we obviously only want an aspect instance when there is a method annotated with @Foo. For a regular execution
+ * pointcut we couldn't really do this due to the multiple joinpoint signatures for each joinpoint (and so lots of types get the
+ * ajcMightHaveAspect interface). However, for an execution pointcut involving an annotation we can do something clever. Annotations
+ * must match against the first primary joinpoint signature - so when computing the type pattern to use for matching when processing
+ * the perthis() clause above, we can use the HasMemberTypePattern - because that effectively does what we want. We want an aspect
+ * instance if the type hasmethod(...) with the appropriate annotation. This would be great... but breaks in the face of ITDs. If
+ * the method that hasmethod() would match is introduced via an ITD we come unstuck, the code in HasMemberTypePattern.hasMethod()
+ * does look at ITDs but it won't see annotations, they aren't visible (at least through EclipseResolvedMember objects). And so this
+ * subclass is created to say 'if the supertype thinks it is a match, great, but if it doesnt then if there are ITDs on the target,
+ * they might match so just say 'true''. Note that returning true is just confirming whether the 'mightHaveAspect' interface (and
+ * friends) are getting added.
+ * 
+ * @author Andy Clement
+ */
+public class HasMemberTypePatternForPerThisMatching extends HasMemberTypePattern {
+
+	public HasMemberTypePatternForPerThisMatching(SignaturePattern aSignaturePattern) {
+		super(aSignaturePattern);
+	}
+
+	protected boolean hasMethod(ResolvedType type) {
+		boolean b = super.hasMethod(type);
+		if (b) {
+			return true;
+		}
+		// If there are ITDs, have to be safe and just assume one of them might match
+		List<ConcreteTypeMunger> mungers = type.getInterTypeMungersIncludingSupers();
+		if (mungers.size() != 0) {
+			return true;
+		}
+		return false;
+	}
+
+	@Override
+	public void write(CompressingDataOutputStream s) throws IOException {
+		throw new IllegalAccessError("Should never be called, these are transient and don't get serialized");
+	}
+}

org.aspectj.matcher/src/org/aspectj/weaver/patterns/PerThisOrTargetPointcutVisitor.java

@@ -90,7 +90,17 @@ public class PerThisOrTargetPointcutVisitor extends AbstractPatternNodeVisitor {
 		} else if (node.getKind().equals(Shadow.ConstructorExecution) || node.getKind().equals(Shadow.Initialization)
 				|| node.getKind().equals(Shadow.MethodExecution) || node.getKind().equals(Shadow.PreInitialization)
 				|| node.getKind().equals(Shadow.StaticInitialization)) {
-			return node.getSignature().getDeclaringType();
+			SignaturePattern signaturePattern = node.getSignature();
+			boolean isStarAnnotation = signaturePattern.isStarAnnotation();
+			// For a method execution joinpoint, we check for an annotation pattern. If there is one we know it will be matched
+			// against the 'primary' joinpoint (the one in the type) - 'super'joinpoints can't match it. If this situation occurs
+			// we can re-use the HasMemberTypePattern to guard on whether the perthis/target should match. pr354470
+			if (!m_isTarget && node.getKind().equals(Shadow.MethodExecution)) {
+				if (!isStarAnnotation) {
+					return new HasMemberTypePatternForPerThisMatching(signaturePattern);
+				}
+			}
+			return signaturePattern.getDeclaringType();
 		} else if (node.getKind().equals(Shadow.ConstructorCall) || node.getKind().equals(Shadow.FieldGet)
 				|| node.getKind().equals(Shadow.FieldSet) || node.getKind().equals(Shadow.MethodCall)) {
 			if (m_isTarget) {