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/*
* Copyright 2002-2015 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 java.util.Set;
import org.springframework.asm.AnnotationVisitor;
import org.springframework.asm.MethodVisitor;
import org.springframework.asm.Opcodes;
import org.springframework.asm.SpringAsmInfo;
import org.springframework.asm.Type;
import org.springframework.core.annotation.AnnotationAttributes;
import org.springframework.core.type.MethodMetadata;
import org.springframework.util.LinkedMultiValueMap;
import org.springframework.util.MultiValueMap;
/**
* ASM method visitor which looks for the annotations defined on a method,
* exposing them through the {@link org.springframework.core.type.MethodMetadata}
* interface.
*
* @author Juergen Hoeller
* @author Mark Pollack
* @author Costin Leau
* @author Chris Beams
* @author Phillip Webb
* @since 3.0
*/
public class MethodMetadataReadingVisitor extends MethodVisitor implements MethodMetadata {
protected final String methodName;
protected final int access;
protected final String declaringClassName;
protected final String returnTypeName;
protected final ClassLoader classLoader;
protected final Set<MethodMetadata> methodMetadataSet;
protected final Map<String, Set<String>> metaAnnotationMap = new LinkedHashMap<String, Set<String>>(4);
protected final LinkedMultiValueMap<String, AnnotationAttributes> attributesMap =
new LinkedMultiValueMap<String, AnnotationAttributes>(4);
public MethodMetadataReadingVisitor(String methodName, int access, String declaringClassName,
String returnTypeName, ClassLoader classLoader, Set<MethodMetadata> methodMetadataSet) {
super(SpringAsmInfo.ASM_VERSION);
this.methodName = methodName;
this.access = access;
this.declaringClassName = declaringClassName;
this.returnTypeName = returnTypeName;
this.classLoader = classLoader;
this.methodMetadataSet = methodMetadataSet;
}
@Override
public AnnotationVisitor visitAnnotation(final String desc, boolean visible) {
String className = Type.getType(desc).getClassName();
this.methodMetadataSet.add(this);
return new AnnotationAttributesReadingVisitor(
className, this.attributesMap, this.metaAnnotationMap, this.classLoader);
}
@Override
public String getMethodName() {
return this.methodName;
}
@Override
public boolean isAbstract() {
return ((this.access & Opcodes.ACC_ABSTRACT) != 0);
}
@Override
public boolean isStatic() {
return ((this.access & Opcodes.ACC_STATIC) != 0);
}
@Override
public boolean isFinal() {
return ((this.access & Opcodes.ACC_FINAL) != 0);
}
@Override
public boolean isOverridable() {
return (!isStatic() && !isFinal() && ((this.access & Opcodes.ACC_PRIVATE) == 0));
}
@Override
public boolean isAnnotated(String annotationName) {
return this.attributesMap.containsKey(annotationName);
}
@Override
public AnnotationAttributes getAnnotationAttributes(String annotationName) {
return getAnnotationAttributes(annotationName, false);
}
@Override
public AnnotationAttributes getAnnotationAttributes(String annotationName, boolean classValuesAsString) {
AnnotationAttributes raw = AnnotationReadingVisitorUtils.getMergedAnnotationAttributes(
this.attributesMap, this.metaAnnotationMap, annotationName);
return AnnotationReadingVisitorUtils.convertClassValues(
"method '" + getMethodName() + "'", this.classLoader, raw, classValuesAsString);
}
@Override
public MultiValueMap<String, Object> getAllAnnotationAttributes(String annotationName) {
return getAllAnnotationAttributes(annotationName, false);
}
@Override
public MultiValueMap<String, Object> getAllAnnotationAttributes(String annotationName, boolean classValuesAsString) {
if (!this.attributesMap.containsKey(annotationName)) {
return null;
}
MultiValueMap<String, Object> allAttributes = new LinkedMultiValueMap<String, Object>();
for (AnnotationAttributes annotationAttributes : this.attributesMap.get(annotationName)) {
AnnotationAttributes convertedAttributes = AnnotationReadingVisitorUtils.convertClassValues(
"method '" + getMethodName() + "'", this.classLoader, annotationAttributes, classValuesAsString);
for (Map.Entry<String, Object> entry : convertedAttributes.entrySet()) {
allAttributes.add(entry.getKey(), entry.getValue());
}
}
return allAttributes;
}
@Override
public String getDeclaringClassName() {
return this.declaringClassName;
}
@Override
public String getReturnTypeName() {
return this.returnTypeName;
}
}
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