javax.enterprise.inject.spi.AnnotatedParameter Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 javax.enterprise.inject.spi;
import java.lang.annotation.Annotation;
import java.lang.reflect.Executable;
import java.lang.reflect.Member;
import java.lang.reflect.Parameter;
import java.util.Arrays;
import java.util.LinkedHashSet;
import java.util.Set;
/**
* Defines member parameter contract.
*
* @version $Rev: 1799996 $ $Date: 2017-06-26 17:20:09 -0400 (Mon, 26 Jun 2017) $
*
* @param declaring type
*/
public interface AnnotatedParameter extends Annotated
{
/**
* Returns parameter position.
*
* @return parameter position
*/
int getPosition();
/**
* Returns declaring callable member.
*
* @return declaring callable member
*/
AnnotatedCallable getDeclaringCallable();
default Parameter getJavaParameter()
{
Member javaMember = getDeclaringCallable().getJavaMember();
if (!Executable.class.isInstance(javaMember))
{
throw new IllegalStateException("Parameter does not belong to a Constructor or Method: " + javaMember);
}
return ((Executable) javaMember).getParameters()[getPosition()];
}
@Override
default Set getAnnotations(Class annotationType)
{
return new LinkedHashSet<>(Arrays.asList(getJavaParameter().getAnnotationsByType(annotationType)));
}
}