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