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ConfiguredConstraint.java
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ConfiguredConstraint.java
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/*
* JBoss, Home of Professional Open Source
* Copyright 2011, Red Hat, Inc. and/or its affiliates, and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* 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.hibernate.validator.internal.cfg.context;
import java.lang.annotation.Annotation;
import java.lang.reflect.Member;
import java.lang.reflect.Method;
import java.util.Map;
import org.hibernate.validator.cfg.ConstraintDef;
import org.hibernate.validator.internal.metadata.location.BeanConstraintLocation;
import org.hibernate.validator.internal.metadata.location.ConstraintLocation;
import org.hibernate.validator.internal.metadata.location.MethodConstraintLocation;
import org.hibernate.validator.internal.util.annotationfactory.AnnotationDescriptor;
import org.hibernate.validator.internal.util.annotationfactory.AnnotationFactory;
import org.hibernate.validator.internal.util.logging.Log;
import org.hibernate.validator.internal.util.logging.LoggerFactory;
/**
* Represents a programmatically configured constraint and meta-data
* related to its location (bean type etc.).
*
* @author Gunnar Morling
*/
public class ConfiguredConstraint<A extends Annotation, L extends ConstraintLocation> {
private static final Log log = LoggerFactory.make();
private final ConstraintDefAccessor<A> constraint;
private final L location;
private ConfiguredConstraint(ConstraintDef<?, A> constraint, L location) {
this.constraint = new ConstraintDefAccessor<A>( constraint );
this.location = location;
}
public static <A extends Annotation> ConfiguredConstraint<A, BeanConstraintLocation> forType(ConstraintDef<?, A> constraint, Class<?> beanType) {
return new ConfiguredConstraint<A, BeanConstraintLocation>(
constraint, new BeanConstraintLocation( beanType )
);
}
public static <A extends Annotation> ConfiguredConstraint<A, BeanConstraintLocation> forProperty(ConstraintDef<?, A> constraint, Member member) {
return new ConfiguredConstraint<A, BeanConstraintLocation>(
constraint, new BeanConstraintLocation( member )
);
}
public static <A extends Annotation> ConfiguredConstraint<A, MethodConstraintLocation> forParameter(ConstraintDef<?, A> constraint, Method method, int parameterIndex) {
return new ConfiguredConstraint<A, MethodConstraintLocation>(
constraint, new MethodConstraintLocation( method, parameterIndex )
);
}
public static <A extends Annotation> ConfiguredConstraint<A, MethodConstraintLocation> forReturnValue(ConstraintDef<?, A> constraint, Method method) {
return new ConfiguredConstraint<A, MethodConstraintLocation>(
constraint, new MethodConstraintLocation( method )
);
}
public ConstraintDef<?, A> getConstraint() {
return constraint;
}
public L getLocation() {
return location;
}
public Class<A> getConstraintType() {
return constraint.getConstraintType();
}
public Map<String, Object> getParameters() {
return constraint.getParameters();
}
public A createAnnotationProxy() {
AnnotationDescriptor<A> annotationDescriptor = new AnnotationDescriptor<A>( getConstraintType() );
for ( Map.Entry<String, Object> parameter : getParameters().entrySet() ) {
annotationDescriptor.setValue( parameter.getKey(), parameter.getValue() );
}
try {
return AnnotationFactory.create( annotationDescriptor );
}
catch ( RuntimeException e ) {
throw log.getUnableToCreateAnnotationForConfiguredConstraintException( e );
}
}
/**
* Provides access to the members of a {@link ConstraintDef}.
*/
private static class ConstraintDefAccessor<A extends Annotation>
extends ConstraintDef<ConstraintDefAccessor<A>, A> {
private ConstraintDefAccessor(ConstraintDef<?, A> original) {
super( original );
}
private Class<A> getConstraintType() {
return constraintType;
}
private Map<String, Object> getParameters() {
return parameters;
}
}
}