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Easy Redis Java client and Real-Time Data Platform. Valkey compatible. Sync/Async/RxJava3/Reactive API. Client side caching. Over 50 Redis based Java objects and services: JCache API, Apache Tomcat, Hibernate, Spring, Set, Multimap, SortedSet, Map, List, Queue, Deque, Semaphore, Lock, AtomicLong, Map Reduce, Bloom filter, Scheduler, RPC
// Copyright (c) 2003-present, Jodd Team (http://jodd.org)
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
package jodd.introspector;
import jodd.util.ClassUtil;
import java.lang.reflect.Method;
import java.lang.reflect.Type;
/**
* Method descriptor. Holds additional method data,
* that might be specific to implementation class.
*/
public class MethodDescriptor extends Descriptor {
private static final MethodParamDescriptor[] NO_PARAMS = new MethodParamDescriptor[0];
protected final Method method;
protected final Type returnType;
protected final Class rawReturnType;
protected final Class rawReturnComponentType;
protected final Class rawReturnKeyComponentType;
protected final MethodParamDescriptor[] parameters;
protected final MapperFunction mapperFunction;
// protected final Function getterFunction;
public MethodDescriptor(final ClassDescriptor classDescriptor, final Method method) {
super(classDescriptor, ClassUtil.isPublic(method));
this.method = method;
this.returnType = method.getGenericReturnType();
this.rawReturnType = ClassUtil.getRawType(returnType, classDescriptor.getType());
final Class[] componentTypes = ClassUtil.getComponentTypes(returnType, classDescriptor.getType());
if (componentTypes != null) {
this.rawReturnComponentType = componentTypes[componentTypes.length - 1];
this.rawReturnKeyComponentType = componentTypes[0];
} else {
this.rawReturnComponentType = null;
this.rawReturnKeyComponentType = null;
}
// force access
ClassUtil.forceAccess(method);
// mapper
final Mapper mapper = method.getAnnotation(Mapper.class);
if (mapper != null) {
mapperFunction = MapperFunctionInstances.get().lookup(mapper.value());
} else {
mapperFunction = null;
}
// parameters
if (method.getParameterCount() == 0) {
parameters = NO_PARAMS;
}
else {
parameters = new MethodParamDescriptor[method.getParameterCount()];
Class[] params = method.getParameterTypes();
Type[] genericParams = method.getGenericParameterTypes();
for (int i = 0; i < params.length; i++) {
final Class parameterType = params[i];
final Class rawParameterType = genericParams.length == 0 ?
parameterType :
ClassUtil.getRawType(genericParams[i], classDescriptor.getType());
final Class rawParameterComponentType = genericParams.length == 0 ?
null :
ClassUtil.getComponentType(genericParams[i], classDescriptor.getType(), -1);
parameters[i] = new MethodParamDescriptor(parameterType, rawParameterType, rawParameterComponentType);
}
}
// try {
// MethodHandles.Lookup lookup = MethodHandles.lookup();
// CallSite callSite = LambdaMetafactory.metafactory(lookup,
// "apply",
// MethodType.methodType(Function.class),
// MethodType.methodType(Object.class, Object.class),
// lookup.findVirtual(
// classDescriptor.getType(),
// method.getName(),
// MethodType.methodType(method.getReturnType())),
// MethodType.methodType(method.getReturnType(), classDescriptor.type)
// );
//
// this.getterFunction = (Function) callSite.getTarget().invokeExact();
// }
// catch (Throwable ex) {
// throw new IllegalArgumentException(ex);
// }
}
/**
* Returns method name.
*/
@Override
public String getName() {
return method.getName();
}
/**
* Returns method.
*/
public Method getMethod() {
return method;
}
/**
* Returns raw return type.
*/
public Class getRawReturnType() {
return rawReturnType;
}
/**
* Returns raw component type of return type.
* May be null
if return type does not have
* components.
*/
public Class getRawReturnComponentType() {
return rawReturnComponentType;
}
/**
* Returns raw component type of return type.
* May be null
if return type does not have
* components.
*/
public Class getRawReturnKeyComponentType() {
return rawReturnKeyComponentType;
}
/**
* Resolves raw return component types
* This value is NOT cached.
*/
public Class[] resolveRawReturnComponentTypes() {
return ClassUtil.getComponentTypes(returnType, classDescriptor.getType());
}
/**
* Returns {@link MethodParamDescriptor method parameteres}.
*/
public MethodParamDescriptor[] getParameters() {
return parameters;
}
/**
* Returns number of parameters.
*/
public int getParameterCount() {
return parameters.length;
}
// ---------------------------------------------------------------- toString
@Override
public String toString() {
return classDescriptor.getType().getSimpleName() + '#' + method.getName() + "()";
}
}
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