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 */
017
018
019package org.apache.commons.beanutils.converters;
020
021
022import java.util.List;
023import org.apache.commons.beanutils.ConversionException;
024
025
026/**
027 * <p>Standard {@link org.apache.commons.beanutils.Converter} implementation that converts an incoming
028 * String into a primitive array of long.  On a conversion failure, returns
029 * a specified default value or throws a {@link ConversionException} depending
030 * on how this instance is constructed.</p>
031 *
032 * @version $Id$
033 * @since 1.4
034 * @deprecated Replaced by the new {@link ArrayConverter} implementation
035 */
036
037@Deprecated
038public final class LongArrayConverter extends AbstractArrayConverter {
039
040
041    // ----------------------------------------------------------- Constructors
042
043
044    /**
045     * Create a {@link org.apache.commons.beanutils.Converter} that will throw
046     * a {@link ConversionException} if a conversion error occurs.
047     */
048    public LongArrayConverter() {
049
050        this.defaultValue = null;
051        this.useDefault = false;
052
053    }
054
055
056    /**
057     * Create a {@link org.apache.commons.beanutils.Converter} that will return
058     * the specified default value if a conversion error occurs.
059     *
060     * @param defaultValue The default value to be returned
061     */
062    public LongArrayConverter(final Object defaultValue) {
063
064        this.defaultValue = defaultValue;
065        this.useDefault = true;
066
067    }
068
069
070    // ------------------------------------------------------- Static Variables
071
072
073    /**
074     * <p>Model object for type comparisons.</p>
075     */
076    private static final long[] MODEL = new long[0];
077
078
079    // --------------------------------------------------------- Public Methods
080
081
082    /**
083     * Convert the specified input object into an output object of the
084     * specified type.
085     *
086     * @param type Data type to which this value should be converted
087     * @param value The input value to be converted
088     * @return the converted value
089     *
090     * @throws ConversionException if conversion cannot be performed
091     *  successfully
092     */
093    @Override
094    public Object convert(final Class type, final Object value) {
095
096        // Deal with a null value
097        if (value == null) {
098            if (useDefault) {
099                return (defaultValue);
100            } else {
101                throw new ConversionException("No value specified");
102            }
103        }
104
105        // Deal with the no-conversion-needed case
106        if (MODEL.getClass() == value.getClass()) {
107            return (value);
108        }
109
110        // Deal with input value as a String array
111        if (strings.getClass() == value.getClass()) {
112            try {
113                final String[] values = (String[]) value;
114                final long[] results = new long[values.length];
115                for (int i = 0; i < values.length; i++) {
116                    results[i] = Long.parseLong(values[i]);
117                }
118                return (results);
119            } catch (final Exception e) {
120                if (useDefault) {
121                    return (defaultValue);
122                } else {
123                    throw new ConversionException(value.toString(), e);
124                }
125            }
126        }
127
128        // Parse the input value as a String into elements
129        // and convert to the appropriate type
130        try {
131            final List list = parseElements(value.toString());
132            final long[] results = new long[list.size()];
133            for (int i = 0; i < results.length; i++) {
134                results[i] = Long.parseLong((String) list.get(i));
135            }
136            return (results);
137        } catch (final Exception e) {
138            if (useDefault) {
139                return (defaultValue);
140            } else {
141                throw new ConversionException(value.toString(), e);
142            }
143        }
144
145    }
146
147
148}