/*
* Copyright 2002-2009 the original author or authors.
*
* 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.springframework.core.type.classreading;
import java.util.LinkedHashMap;
import java.util.Map;
import org.springframework.asm.AnnotationVisitor;
import org.springframework.asm.MethodAdapter;
import org.springframework.asm.Opcodes;
import org.springframework.asm.Type;
import org.springframework.asm.commons.EmptyVisitor;
import org.springframework.core.type.MethodMetadata;
import org.springframework.util.MultiValueMap;
/**
* ASM method visitor which looks for the annotations defined on the method,
* exposing them through the {@link org.springframework.core.type.MethodMetadata}
* interface.
*
* @author Juergen Hoeller
* @author Mark Pollack
* @author Costin Leau
* @since 3.0
*/
final class MethodMetadataReadingVisitor extends MethodAdapter implements MethodMetadata {
private final String name;
private final int access;
private String declaringClassName;
private final ClassLoader classLoader;
private final MultiValueMap<String, MethodMetadata> methodMetadataMap;
private final Map<String, Map<String, Object>> attributeMap = new LinkedHashMap<String, Map<String, Object>>(2);
public MethodMetadataReadingVisitor(String name, int access, String declaringClassName, ClassLoader classLoader,
MultiValueMap<String, MethodMetadata> methodMetadataMap) {
super(new EmptyVisitor());
this.name = name;
this.access = access;
this.declaringClassName = declaringClassName;
this.classLoader = classLoader;
this.methodMetadataMap = methodMetadataMap;
}
@Override
public AnnotationVisitor visitAnnotation(final String desc, boolean visible) {
String className = Type.getType(desc).getClassName();
methodMetadataMap.add(className, this);
return new AnnotationAttributesReadingVisitor(className, this.attributeMap, null, this.classLoader);
}
public String getMethodName() {
return this.name;
}
public boolean isStatic() {
return ((this.access & Opcodes.ACC_STATIC) != 0);
}
public boolean isFinal() {
return ((this.access & Opcodes.ACC_FINAL) != 0);
}
public boolean isOverridable() {
return (!isStatic() && !isFinal() && ((this.access & Opcodes.ACC_PRIVATE) == 0));
}
public boolean isAnnotated(String annotationType) {
return this.attributeMap.containsKey(annotationType);
}
public Map<String, Object> getAnnotationAttributes(String annotationType) {
return this.attributeMap.get(annotationType);
}
public String getDeclaringClassName() {
return this.declaringClassName;
}
}