/*
    * Copyright 2004-2009 the original author or authors.
    *
    * 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.springmodules.validation.bean.conf;
  
  import java.util.ArrayList;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  import org.apache.commons.collections.CollectionUtils;
  import org.springframework.validation.Validator;
  import org.springmodules.validation.bean.rule.ValidationRule;
  import org.springmodules.validation.validator.CompoundValidator;
  
  /**
   * A default implementation of {@link org.springmodules.validation.bean.conf.BeanValidationConfiguration}.
   *
   * @author Uri Boness
   */
  public class DefaultBeanValidationConfiguration implements MutableBeanValidationConfiguration {
  
      // a list of all the required validatable property names (list elements are strings).
      private List cascadeValidations;
  
      // a list of all the global rules (list elements are ValidationRule's)
      private List globalRules;
  
      // the property validatoin rules (key: string - the property name, value: ValidationRule array)
      private Map rulesByProperty;
  
      // the custom validator for the bean.
      private CompoundValidator customValidator;
  
      /**
       * Constructs a new DefaultBeanValidationConfiguration with no rules, validatable properties, or custom validator.
       */
      public DefaultBeanValidationConfiguration() {
          cascadeValidations = new ArrayList();
          globalRules = new ArrayList();
          rulesByProperty = new HashMap();
          customValidator = new CompoundValidator();
      }
  
      /**
       * @see org.springmodules.validation.bean.conf.BeanValidationConfiguration#getGlobalRules()
       */
      public ValidationRule[] getGlobalRules() {
          return (ValidationRule[]) globalRules.toArray(new ValidationRule[globalRules.size()]);
      }
  
      /**
       * Sets the global rules for this configuration.
       *
       * @param globalRules The global rules for this configuration
       */
      public void setGlobalRules(ValidationRule[] globalRules) {
          List rules = new ArrayList();
          CollectionUtils.addAll(rules, globalRules);
          this.globalRules = rules;
      }
  
      /**
       * Adds the given rule as global rules for this configuration.
       *
       * @param globalRule The rule to be added as global rules for this configuration.
       */
      public void addGlobalRule(ValidationRule globalRule) {
          globalRules.add(globalRule);
      }
  
      /**
       * Adds the given rules as global rules for this configuration.
       *
       * @param globalRules The rules to be added as global rules for this configuration.
       */
      public void addGlobalRules(ValidationRule[] globalRules) {
          CollectionUtils.addAll(this.globalRules, globalRules);
      }
  
      /**
       * @see org.springmodules.validation.bean.conf.BeanValidationConfiguration#getPropertyRules(String).
       */
      public ValidationRule[] getPropertyRules(String propertyName) {
          List rules = (List) rulesByProperty.get(propertyName);
          if (rules == null || rules.isEmpty()) {
             return new ValidationRule[0];
         }
         return (ValidationRule[]) rules.toArray(new ValidationRule[rules.size()]);
     }
 
     /**
      * @see org.springmodules.validation.bean.conf.BeanValidationConfiguration#getValidatedProperties()
      */
     public String[] getValidatedProperties() {
         return (String[]) rulesByProperty.keySet().toArray(new String[rulesByProperty.size()]);
     }
 
     /**
      * Sets the property validation rules for the given property.
      *
      * @param propertyName The name of the property.
      * @param rules The validation rules for the given property.
      */
     public void setPropertyRules(String propertyName, ValidationRule[] rules) {
         List ruleList = new ArrayList();
         CollectionUtils.addAll(ruleList, rules);
         rulesByProperty.put(propertyName, ruleList);
     }
 
     /**
      * Adds the given validation rule to the given property.
      *
      * @param propertyName The name of the property.
      * @param rule The validation rule to be added to the given property.
      */
     public void addPropertyRule(String propertyName, ValidationRule rule) {
         List rules = (List) rulesByProperty.get(propertyName);
         if (rules == null) {
             rules = new ArrayList();
             rulesByProperty.put(propertyName, rules);
         }
         rules.add(rule);
     }
 
     /**
      * Adds the given validation rules to the given property.
      *
      * @param propertyName The name of the property.
      * @param extraRules The extra validation rules that will be added to the given property.
      */
     public void addPropertyRules(String propertyName, ValidationRule[] extraRules) {
         List rules = (List) rulesByProperty.get(propertyName);
         if (rules == null) {
             rules = new ArrayList();
             rulesByProperty.put(propertyName, rules);
         }
         CollectionUtils.addAll(rules, extraRules);
     }
 
     /**
      * @see org.springmodules.validation.bean.conf.BeanValidationConfiguration#getCustomValidator()
      */
     public Validator getCustomValidator() {
         return customValidator;
     }
 
     /**
      * @see org.springmodules.validation.bean.conf.BeanValidationConfiguration#getCascadeValidations()
      */
     public CascadeValidation[] getCascadeValidations() {
         return (CascadeValidation[]) cascadeValidations.toArray(new CascadeValidation[cascadeValidations.size()]);
     }
 
     /**
      * Sets the custom validator for this configuration.
      *
      * @param validator The custom validator for this configuration.
      */
     public void setCustomValidator(Validator validator) {
         setCustomValidators(new Validator[]{validator});
     }
 
     /**
      * Sets the custom validator for this configuration. The custom validator will be compound with the given
      * validators.
      *
      * @param validators The validators that will make the custom validator of this configuration.
      */
     public void setCustomValidators(Validator[] validators) {
         customValidator = new CompoundValidator(validators);
     }
 
     /**
      * Adds the given validator to the custom validator of this configuration.
      *
      * @param validator The validator to be added to the custom validator of this configuration.
      */
     public void addCustomValidator(Validator validator) {
         customValidator.addValidator(validator);
     }
 
     /**
      * Adds the given validators to the custom validator of this configuration.
      *
      * @param validators The validators to be added to the custom validator of this configuration.
      */
     public void addCustomValidators(Validator[] validators) {
         customValidator.addValidators(validators);
     }
 
     /**
      * Sets the cascade validations of this configuration.
      * <p/>
      * param cascadeValidations The cascade validations of this configuration.
      */
     public void setCascadeValidations(CascadeValidation[] cascadeValidations) {
         this.cascadeValidations = new ArrayList();
         for (int i = 0; i < cascadeValidations.length; i++) {
             this.cascadeValidations.add(cascadeValidations[i]);
         }
     }
 
     /**
      * Adds the given cascade validation to this configuration.
      *
      * @param cascadeValidation The cascase validation to be added to this configuration.
      */
     public void addCascadeValidation(CascadeValidation cascadeValidation) {
         addCascadeValidations(new CascadeValidation[]{cascadeValidation});
     }
 
     /**
      * Adds the given cascade validations to this configuration.
      *
      * @param cascadeValidations The cascade validation to be added to this configuration.
      */
     public void addCascadeValidations(CascadeValidation[] cascadeValidations) {
         for (int i = 0; i < cascadeValidations.length; i++) {
             if (!this.cascadeValidations.contains(cascadeValidations[i])) {
                 this.cascadeValidations.add(cascadeValidations[i]);
             }
         }
     }
 
 }