/*

  * Copyright 2004-2011 the Seasar Foundation and the Others.

  *

  * 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 javax.faces.internal;

 import java.util.HashMap;

 import java.util.Map;

 import javax.faces.internal.ValidatorResource.ValidatorPair;

 import javax.faces.validator.Validator;

 import org.seasar.framework.beans.util.BeanUtil;

 import org.seasar.framework.container.S2Container;

 import org.seasar.framework.container.factory.SingletonS2ContainerFactory;

 /**

  * @author shot

  *

  */

 public class NormalValidatorBuilderImpl implements ValidatorBuilder {

     private S2Container container;

     private Map validators = new HashMap();

     public NormalValidatorBuilderImpl() {

         container = SingletonS2ContainerFactory.getContainer();

     }

     public NormalValidatorBuilderImpl(S2Container container) {

         this.container = container;

     }

     public Validator build(String expression, ValidatorPair[] pairs) {

         if (pairs == null || pairs.length == 0) {

             return null;

         }

         if (validators.containsKey(expression)) {

             return (Validator) validators.get(expression);

         }

         if (pairs.length == 1) {

             Validator validator = getSingleValidator(pairs[0]);

             validators.put(expression, validator);

             return validator;

         }

         final ValidatorChain chain = new ValidatorChain();

         for (int i = 0; i < pairs.length; i++) {

             chain.add(getSingleValidator(pairs[i]));

         }

         validators.put(expression, chain);

         return chain;

     }

     protected Validator getSingleValidator(ValidatorPair pair) {

         final Validator validator = (Validator) container

                 .getComponent(pair.validatorName);

         BeanUtil.copyProperties(pair.properties, validator);

         return validator;

     }

     public void setContainer(S2Container container) {

         this.container = container;

     }

     public void clearAll() {

         validators.clear();

     }

     public void clearValidator(String expression) {

         validators.remove(expression);

     }

 }