001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.wicket.util.convert.converter;
018
019import java.math.BigDecimal;
020import java.util.Locale;
021
022import org.apache.wicket.util.convert.IConverter;
023
024
025/**
026 * Converts from Object to Long.
027 * 
028 * @author Eelco Hillenius
029 * @author Jonathan Locke
030 */
031public class LongConverter extends AbstractIntegerConverter<Long>
032{
033        private static final long serialVersionUID = 1L;
034
035        private static final BigDecimal MIN_VALUE = new BigDecimal(Long.MIN_VALUE);
036        private static final BigDecimal MAX_VALUE = new BigDecimal(Long.MAX_VALUE);
037
038        /**
039         * The singleton instance for a long converter
040         */
041        public static final IConverter<Long> INSTANCE = new LongConverter();
042
043        /**
044         * @see org.apache.wicket.util.convert.IConverter#convertToObject(java.lang.String,Locale)
045         */
046        @Override
047        public Long convertToObject(final String value, final Locale locale)
048        {
049                final BigDecimal number = parse(value, MIN_VALUE, MAX_VALUE, locale);
050
051                if (number == null)
052                {
053                        return null;
054                }
055
056                return number.longValue();
057        }
058
059        /**
060         * @see org.apache.wicket.util.convert.converter.AbstractConverter#getTargetType()
061         */
062        @Override
063        protected Class<Long> getTargetType()
064        {
065                return Long.class;
066        }
067}