/*
* 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.wicket.validation;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import org.apache.wicket.behavior.Behavior;
import org.apache.wicket.util.lang.Args;
/**
* A compound {@link IValidator}. Once an error is reported against the {@link IValidatable} being
* checked, the rest of the validator chain is ignored.
*
* @author Igor Vaynberg (ivaynberg)
* @param <T>
* type of validatable
* @since 1.2.6
*/
public class CompoundValidator<T> extends Behavior implements IValidator<T>
{
private static final long serialVersionUID = 1L;
private final List<IValidator<T>> validators = new ArrayList<IValidator<T>>(2);
/**
* Constructor.
*/
public CompoundValidator()
{
}
/**
* Adds an <code>IValidator</code> to the chain of validators.
*
* @param validator
* an <code>IValidator</code> to be added
* @return this <code>ValidationError</code> for chaining purposes
*/
public final CompoundValidator<T> add(IValidator<T> validator)
{
Args.notNull(validator, "validator");
validators.add(validator);
return this;
}
/**
* @see IValidator#validate(IValidatable)
*/
@Override
public final void validate(IValidatable<T> validatable)
{
Iterator<IValidator<T>> it = validators.iterator();
while (it.hasNext() && validatable.isValid())
{
it.next().validate(validatable);
}
}
/**
* Gets an unmodifiable list of the registered validators.
*
* @return unmodifiable list of delegate {@link IValidator}s inside this one
*/
public final List<IValidator<T>> getValidators()
{
return Collections.unmodifiableList(validators);
}
}