trunk/bval-guice/src/main/java/org/apache/bval/guice/ValidationModule.java

/*
 * 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 org.apache.bval.guice;

import javax.validation.ConstraintValidatorFactory;
import javax.validation.MessageInterpolator;
import javax.validation.TraversableResolver;
import javax.validation.Validator;
import javax.validation.ValidatorFactory;
import javax.validation.spi.ConfigurationState;
import javax.validation.spi.ValidationProvider;

import org.aopalliance.intercept.MethodInterceptor;
import org.apache.bval.jsr303.ApacheValidationProvider;
import org.apache.bval.jsr303.DefaultMessageInterpolator;
import org.apache.bval.jsr303.resolver.DefaultTraversableResolver;

import com.google.inject.AbstractModule;
import com.google.inject.Scopes;
import com.google.inject.TypeLiteral;
import com.google.inject.matcher.Matchers;

/**
 * The Google-Guice module for Apache BVal.
 *
 * @version $Id$
 */
public final class ValidationModule extends AbstractModule {

    /**
     * {@inheritDoc}
     */
    @Override
    protected void configure() {
        // apache bval bootstrap
        this.bind(MessageInterpolator.class).to(DefaultMessageInterpolator.class).in(Scopes.SINGLETON);
        this.bind(TraversableResolver.class).to(DefaultTraversableResolver.class).in(Scopes.SINGLETON);
        this.bind(ConstraintValidatorFactory.class).to(GuiceAwareConstraintValidatorFactory.class);
        this.bind(new TypeLiteral<ValidationProvider<?>>() {}).to(ApacheValidationProvider.class).in(Scopes.SINGLETON);
        this.bind(ConfigurationState.class).toProvider(ConfigurationStateProvider.class).in(Scopes.SINGLETON);
        this.bind(ValidatorFactory.class).toProvider(ValidatorFactoryProvider.class).in(Scopes.SINGLETON);
        this.bind(Validator.class).toProvider(ValidatorProvider.class);

        // AOP stuff
        MethodInterceptor validateMethodInterceptor = new ValidateMethodInterceptor();
        this.binder().requestInjection(validateMethodInterceptor);
        this.bindInterceptor(Matchers.any(), Matchers.annotatedWith(Validate.class), validateMethodInterceptor);
    }

}