/*

  * Copyright 1999-2002,2004 The Apache Software Foundation.

  * 

  * 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.apache.commons.latka.validators;

 import org.apache.commons.latka.Validator;

 import org.apache.commons.latka.ValidationException;

 import org.apache.commons.latka.http.Response;

 import java.text.MessageFormat;

 /**

  * FIXME: Docs

  *

  * @author Morgan Delagrange

  * @author dIon Gillard

  * @version $Id: ByteLengthValidator.java 155424 2005-02-26 13:09:29Z dirkv $

  */

 public class ByteLengthValidator extends BaseValidator implements Validator {

   // --------------------------------------------------------------- Attributes

   protected int _minLength = 0;

   protected int _maxLength = -1;

   protected static final MessageFormat MAX_MESSAGE = new MessageFormat("Expected at most {0,number,integer} bytes. Found {1,number,integer}.");

   protected static final MessageFormat MIN_MESSAGE = new MessageFormat("Expected at least {0,number,integer} bytes. Found {1,number,integer}.");

   // ------------------------------------------------------------- Constructors

   public ByteLengthValidator() {

       this(null,0,-1);

   }

   public ByteLengthValidator(String label) {

       this(label,0,-1);

   }

   public ByteLengthValidator(int min, int max) {

       this(null,min,max);

   }

   public ByteLengthValidator(String label, int min, int max) {

       super(label);

       _minLength = min;

       _maxLength = max;

   }

   // ------------------------------------------------------------------ Methods

   public void setMinLength(int length) {

     _minLength = length;

   }

   public void setMaxLength(int length) {

     _maxLength = length;

   }

   public void validate(Response response)

     throws ValidationException {

     int byteLength = response.getByteLength();

     if (_maxLength > -1) {

       if (byteLength > _maxLength) {

         fail(MAX_MESSAGE.format(new Object[] { new Integer(_maxLength), new Integer(byteLength) }).toString());

       }

     }

     if (byteLength < _minLength) {

       fail(MIN_MESSAGE.format(new Object[] { new Integer(_minLength), new Integer(byteLength) }).toString());

     }

   }

 }