/*
* Copyright 2004-2005 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.validator;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.springframework.validation.Errors;
import org.springframework.validation.Validator;
/**
* A validator that is compound of aother validators. This validator deligates the validation
* task to all its contained validators.
*
* @author Uri Boness
*/
public class CompoundValidator implements Validator {
// the validators this validator is compound of.
private List validators;
/**
* Constructs a new CompoundValidator with no internal validators.
*/
public CompoundValidator() {
this(new Validator[0]);
}
/**
* Constructs a new CompoundValidator with the given internal validators.
*
* @param validators The internal validators this validator is compound of.
*/
public CompoundValidator(Validator[] validators) {
setValidators(validators);
}
/**
* Returns whether this validator supports the given class. In practice this validator
* supports the given class only if any of its internal validators support it.
*
* @param clazz The class to be validated.
* @return Whether this validator supports the given class.
* @see Validator#supports(Class)
*/
public boolean supports(Class clazz) {
for (Iterator i = validators.iterator(); i.hasNext();) {
Validator validator = (Validator) i.next();
if (validator.supports(clazz)) {
return true;
}
}
return false;
}
/**
* Validates the given object. All internal validators that support the given object class
* will perform the actual validation.
*
* @param obj The validated object.
* @param errors A registry where validation errors are registered.
* @see Validator#validate(Object, org.springframework.validation.Errors)
*/
public void validate(Object obj, Errors errors) {
for (Iterator i = validators.iterator(); i.hasNext();) {
Validator validator = (Validator) i.next();
if (validator.supports(obj.getClass())) {
validator.validate(obj, errors);
}
}
}
/**
* Adds the given validator to this compound validator.
*
* @param validator The validator to be added to this compound validator.
*/
public void addValidator(Validator validator) {
validators.add(validator);
}
/**
* Adds the given validators to this compound validator.
*
* @param validators The validators to be added to this compound validator.
*/
public void addValidators(Validator[] validators) {
for (int i = 0; i < validators.length; i++) {
addValidator(validators[i]);
}
}
/**
* Sets the internal validators of this compound validator.
*
* @param validators The internal validators of this compound validator.
*/
public void setValidators(Validator[] validators) {
List validatorList = new ArrayList(validators.length);
for (int i = 0; i < validators.length; i++) {
validatorList.add(validators[i]);
}
this.validators = validatorList;
}
}