datevalidator.java

Wicket一个开发Java Web应用程序框架。它使得开发web应用程序变得容易而轻松。 Wicket利用一个POJO data beans组件使得它可以与任何持久层技术相结合。

/*
 * 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.validator;

import java.util.Date;
import java.util.Map;

import org.apache.wicket.markup.html.form.FormComponent;
import org.apache.wicket.validation.IValidatable;


/**
 * Validator for checking dates. This validator can be extended or can be used for one of its static
 * factory methods to get the default <code>DateValidator</code> as a range, maximum, or minimum
 * type.
 * 
 * @author Jonathan Locke
 * @author Johan Compagner
 * @author Igor Vaynberg (ivaynberg)
 * @since 1.2.6
 */
public abstract class DateValidator extends AbstractValidator
{

	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;

	/**
	 * Gets a <code>Date</code> range validator for checking if the <code>Date</code> value
	 * falls between the minimum and maximum <code>Date</code> values. If that is not the case, an
	 * error message will be generated with the key "DateValidator.range". The message keys that can
	 * be used are:
	 * <p>
	 * <ul>
	 * <li>${minimum}: the minimum date</li>
	 * <li>${maximum}: the maximum date</li>
	 * <li>${input}: the input the user gave</li>
	 * <li>${name}: the name of the <code>Component</code> that failed</li>
	 * <li>${label}: the label of the <code>Component</code> - either comes from
	 * <code>FormComponent.labelModel</code> or resource key [form-id].[form-component-id] in that
	 * order</li>
	 * </ul>
	 * 
	 * @param minimum
	 *            the minimum <code>Date</code>
	 * @param maximum
	 *            the maximum <code>Date</code>
	 * 
	 * @return the requested <code>DateValidator</code>
	 */
	public static DateValidator range(Date minimum, Date maximum)
	{
		return new RangeValidator(minimum, maximum);
	}

	/**
	 * Gets a <code>Date</code> minimum validator for checking if a <code>Date</code> value is
	 * greater than the given minimum <code>Date</code> value. If that is not the case, an error
	 * message will be generated with the key "DateValidator.minimum". The message keys that can be
	 * used are:
	 * <p>
	 * <ul>
	 * <li>${minimum}: the minimum date</li>
	 * <li>${input}: the input the user gave</li>
	 * <li>${name}: the name of the <code>Component</code> that failed</li>
	 * <li>${label}: the label of the <code>Component</code> - either comes from
	 * <code>FormComponent.labelModel</code> or resource key [form-id].[form-component-id] in that
	 * order</li>
	 * </ul>
	 * 
	 * @param minimum
	 *            the minimum <code>Date</code>
	 * 
	 * @return the requested <code>DateValidator</code>
	 */
	public static DateValidator minimum(Date minimum)
	{
		return new MinimumValidator(minimum);
	}

	/**
	 * Gets a <code>Date</code> maximum validator for checking if a <code>Date</code> value is
	 * smaller than the given maximum value. If that is not the case, an error message will be
	 * generated with the key "DateValidator.maximum". The message keys that can be used are:
	 * <p>
	 * <ul>
	 * <li>${maximum}: the maximum date</li>
	 * <li>${input}: the input the user gave</li>
	 * <li>${name}: the name of the <code>Component</code> that failed</li>
	 * <li>${label}: the label of the <code>Component</code> - either comes from
	 * <code>FormComponent.labelModel</code> or resource key [form-id].[form-component-id] in that
	 * order</li>
	 * </ul>
	 * 
	 * @param maximum
	 *            the maximum <code>Date</code>
	 * 
	 * @return the requested <code>DateValidator</code>
	 */
	public static DateValidator maximum(Date maximum)
	{
		return new MaximumValidator(maximum);
	}


	private static class RangeValidator extends DateValidator
	{
		private static final long serialVersionUID = 1L;
		private final Date minimum;
		private final Date maximum;

		private RangeValidator(Date minimum, Date maximum)
		{
			this.minimum = minimum;
			this.maximum = maximum;

		}

		protected Map variablesMap(IValidatable validatable)
		{
			final Map map = super.variablesMap(validatable);
			map.put("minimum", minimum);
			map.put("maximum", maximum);
			return map;
		}

		/**
		 * @see AbstractValidator#resourceKey(FormComponent)
		 */
		protected String resourceKey()
		{
			return "DateValidator.range";
		}

		protected void onValidate(IValidatable validatable)
		{
			Date value = (Date)validatable.getValue();
			if (value.before(minimum) || value.after(maximum))
			{
				error(validatable);
			}

		}

	}

	private static class MinimumValidator extends DateValidator
	{
		private static final long serialVersionUID = 1L;
		private final Date minimum;

		private MinimumValidator(Date minimum)
		{
			this.minimum = minimum;
		}

		protected Map variablesMap(IValidatable validatable)
		{
			final Map map = super.variablesMap(validatable);
			map.put("minimum", minimum);
			return map;
		}

		protected String resourceKey()
		{
			return "DateValidator.minimum";
		}


		protected void onValidate(IValidatable validatable)
		{
			Date value = (Date)validatable.getValue();
			if (value.before(minimum))
			{
				error(validatable);
			}

		}

	}

	private static class MaximumValidator extends DateValidator
	{
		private static final long serialVersionUID = 1L;
		private final Date maximum;

		private MaximumValidator(Date maximum)
		{
			this.maximum = maximum;
		}

		protected Map variablesMap(IValidatable validatable)
		{
			final Map map = super.variablesMap(validatable);
			map.put("maximum", maximum);
			return map;
		}

		protected String resourceKey()
		{
			return "DateValidator.maximum";
		}


		protected void onValidate(IValidatable validatable)
		{
			Date value = (Date)validatable.getValue();
			if (value.after(maximum))
			{
				error(validatable);
			}

		}

	}
}