org.apache.wicket.util.convert.converter.LongConverter.java Source code

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Here is the source code for org.apache.wicket.util.convert.converter.LongConverter.java

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/*
 * 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.util.convert.converter;

import java.math.BigDecimal;
import java.util.Locale;

import org.apache.wicket.util.convert.IConverter;

/**
 * Converts from Object to Long.
 * 
 * @author Eelco Hillenius
 * @author Jonathan Locke
 */
public class LongConverter extends AbstractIntegerConverter<Long> {
    private static final long serialVersionUID = 1L;

    private static final BigDecimal MIN_VALUE = new BigDecimal(Long.MIN_VALUE);
    private static final BigDecimal MAX_VALUE = new BigDecimal(Long.MAX_VALUE);

    /**
     * The singleton instance for a long converter
     */
    public static final IConverter<Long> INSTANCE = new LongConverter();

    /**
     * @see org.apache.wicket.util.convert.IConverter#convertToObject(java.lang.String,Locale)
     */
    @Override
    public Long convertToObject(final String value, final Locale locale) {
        final BigDecimal number = parse(value, MIN_VALUE, MAX_VALUE, locale);

        if (number == null) {
            return null;
        }

        return number.longValue();
    }

    /**
     * @see org.apache.wicket.util.convert.converter.AbstractConverter#getTargetType()
     */
    @Override
    protected Class<Long> getTargetType() {
        return Long.class;
    }
}