/*
* 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.reflect.Constructor;
import java.lang.reflect.Method;
import java.util.Collections;
import java.util.List;
import javax.validation.ParameterNameProvider;
import org.hibernate.validator.cfg.context.ConstructorConstraintMappingContext;
import org.hibernate.validator.cfg.context.CrossParameterConstraintMappingContext;
import org.hibernate.validator.cfg.context.MethodConstraintMappingContext;
import org.hibernate.validator.cfg.context.ParameterConstraintMappingContext;
import org.hibernate.validator.cfg.context.ReturnValueConstraintMappingContext;
import org.hibernate.validator.internal.metadata.core.ConstraintHelper;
import org.hibernate.validator.internal.metadata.core.MetaConstraint;
import org.hibernate.validator.internal.metadata.location.ExecutableConstraintLocation;
import org.hibernate.validator.internal.metadata.raw.ConfigurationSource;
import org.hibernate.validator.internal.metadata.raw.ConstrainedElement;
import org.hibernate.validator.internal.metadata.raw.ConstrainedExecutable;
import org.hibernate.validator.internal.metadata.raw.ConstrainedParameter;
import org.hibernate.validator.internal.metadata.raw.ExecutableElement;
import org.hibernate.validator.internal.util.logging.Log;
import org.hibernate.validator.internal.util.logging.LoggerFactory;
import static org.hibernate.validator.internal.util.CollectionHelper.newArrayList;
/**
* A constraint mapping creational context which allows to select the parameter or
* return value to which the next operations shall apply.
*
* @author Kevin Pollet <kevin.pollet@serli.com> (C) 2011 SERLI
* @author Gunnar Morling
*/
public class ExecutableConstraintMappingContextImpl
implements ConstructorConstraintMappingContext, MethodConstraintMappingContext {
private static final Log log = LoggerFactory.make();
private final TypeConstraintMappingContextImpl<?> typeContext;
private final ExecutableElement executable;
private final ParameterConstraintMappingContextImpl[] parameterContexts;
private ReturnValueConstraintMappingContextImpl returnValueContext;
private CrossParameterConstraintMappingContextImpl crossParameterContext;
public ExecutableConstraintMappingContextImpl(TypeConstraintMappingContextImpl<?> typeContext, Constructor<?> constructor) {
this( typeContext, ExecutableElement.forConstructor( constructor ) );
}
public ExecutableConstraintMappingContextImpl(TypeConstraintMappingContextImpl<?> typeContext, Method method) {
this( typeContext, ExecutableElement.forMethod( method ) );
}
private ExecutableConstraintMappingContextImpl(TypeConstraintMappingContextImpl<?> typeContext, ExecutableElement executable) {
this.typeContext = typeContext;
this.executable = executable;
this.parameterContexts = new ParameterConstraintMappingContextImpl[executable.getParameterTypes().length];
}
@Override
public ParameterConstraintMappingContext parameter(int index) {
if ( index < 0 || index >= executable.getParameterTypes().length ) {
throw log.getInvalidExecutableParameterIndexException( executable.getAsString() );
}
ParameterConstraintMappingContextImpl context = parameterContexts[index];
if ( context != null ) {
throw log.getParameterHasAlreadyBeConfiguredViaProgrammaticApiException(
typeContext.getBeanClass().getName(),
executable.getAsString(),
index
);
}
context = new ParameterConstraintMappingContextImpl( this, index );
parameterContexts[index] = context;
return context;
}
@Override
public CrossParameterConstraintMappingContext crossParameter() {
if ( crossParameterContext != null ) {
throw log.getCrossParameterElementHasAlreadyBeConfiguredViaProgrammaticApiException(
typeContext.getBeanClass().getName(),
executable.getAsString()
);
}
crossParameterContext = new CrossParameterConstraintMappingContextImpl( this );
return crossParameterContext;
}
@Override
public ReturnValueConstraintMappingContext returnValue() {
if ( returnValueContext != null ) {
throw log.getReturnValueHasAlreadyBeConfiguredViaProgrammaticApiException(
typeContext.getBeanClass().getName(),
executable.getAsString()
);
}
returnValueContext = new ReturnValueConstraintMappingContextImpl( this );
return returnValueContext;
}
public ExecutableElement getExecutable() {
return executable;
}
public TypeConstraintMappingContextImpl<?> getTypeContext() {
return typeContext;
}
public ConstrainedElement build(ConstraintHelper constraintHelper, ParameterNameProvider parameterNameProvider) {
return new ConstrainedExecutable(
ConfigurationSource.API,
new ExecutableConstraintLocation( executable ),
getParameters( constraintHelper, parameterNameProvider ),
crossParameterContext != null ? crossParameterContext.getConstraints( constraintHelper ) : Collections.<MetaConstraint<?>>emptySet(),
returnValueContext != null ? returnValueContext.getConstraints( constraintHelper ) : Collections.<MetaConstraint<?>>emptySet(),
returnValueContext != null ? returnValueContext.getGroupConversions() : Collections.<Class<?>, Class<?>>emptyMap(),
returnValueContext != null ? returnValueContext.isCascading() : false
);
}
private List<ConstrainedParameter> getParameters(ConstraintHelper constraintHelper, ParameterNameProvider parameterNameProvider) {
List<ConstrainedParameter> constrainedParameters = newArrayList();
for ( int i = 0; i < parameterContexts.length; i++ ) {
ParameterConstraintMappingContextImpl parameter = parameterContexts[i];
if ( parameter != null ) {
constrainedParameters.add( parameter.build( constraintHelper, parameterNameProvider ) );
}
else {
constrainedParameters.add(
new ConstrainedParameter(
ConfigurationSource.API,
new ExecutableConstraintLocation( executable, i ),
executable.getParameterNames( parameterNameProvider ).get( i )
)
);
}
}
return constrainedParameters;
}
}