| /******************************************************************************* |
| * 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.ofbiz.base.conversion; |
| |
| import java.lang.reflect.Array; |
| import java.util.Arrays; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import javolution.util.FastList; |
| import javolution.util.FastSet; |
| |
| import org.ofbiz.base.util.StringUtil; |
| import org.ofbiz.base.util.UtilGenerics; |
| |
| /** Collection Converter classes. */ |
| public class CollectionConverters implements ConverterLoader { |
| public static class ArrayCreator implements ConverterCreator, ConverterLoader { |
| public void loadConverters() { |
| Converters.registerCreator(this); |
| } |
| |
| public <S, T> Converter<S, T> createConverter(Class<S> sourceClass, Class<T> targetClass) { |
| if (!sourceClass.isArray()) { |
| return null; |
| } |
| if (targetClass != List.class) { |
| return null; |
| } |
| if (!(sourceClass.getComponentType() instanceof Object)) { |
| return null; |
| } |
| return UtilGenerics.cast(new ArrayClassToList<S, T>(sourceClass, targetClass)); |
| } |
| } |
| |
| private static class ArrayClassToList<S, T> extends AbstractConverter<S, T> { |
| public ArrayClassToList(Class<S> sourceClass, Class<T> targetClass) { |
| super(sourceClass, targetClass); |
| } |
| |
| @Override |
| public boolean canConvert(Class<?> sourceClass, Class<?> targetClass) { |
| return sourceClass == this.getSourceClass() && targetClass == this.getTargetClass(); |
| } |
| |
| public T convert(S obj) throws ConversionException { |
| List<Object> list = FastList.newInstance(); |
| int len = Array.getLength(obj); |
| for (int i = 0; i < len; i++) { |
| list.add(Array.get(obj, i)); |
| } |
| return UtilGenerics.<T>cast(list); |
| } |
| } |
| |
| public static class ArrayToList<T> extends AbstractConverter<T[], List<T>> { |
| public ArrayToList() { |
| super(Object[].class, List.class); |
| } |
| |
| @Override |
| public boolean canConvert(Class<?> sourceClass, Class<?> targetClass) { |
| if (!sourceClass.isArray()) { |
| return false; |
| } |
| if (!List.class.isAssignableFrom(targetClass)) { |
| return false; |
| } |
| if (Object[].class.isAssignableFrom(sourceClass)) { |
| return true; |
| } |
| return false; |
| } |
| |
| public List<T> convert(T[] obj) throws ConversionException { |
| return Arrays.asList(obj); |
| } |
| } |
| |
| public static class ListToString<T> extends AbstractConverter<List<T>, String> { |
| public ListToString() { |
| super(List.class, String.class); |
| } |
| |
| public String convert(List<T> obj) throws ConversionException { |
| return obj.toString(); |
| } |
| } |
| |
| public static class MapToList<K, V> extends AbstractConverter<Map<K, V>, List<Map<K, V>>> { |
| public MapToList() { |
| super(Map.class, List.class); |
| } |
| |
| public List<Map<K, V>> convert(Map<K, V> obj) throws ConversionException { |
| List<Map<K, V>> tempList = FastList.newInstance(); |
| tempList.add(obj); |
| return tempList; |
| } |
| } |
| |
| public static class MapToSet<K, V> extends AbstractConverter<Map<K, V>, Set<Map<K, V>>> { |
| public MapToSet() { |
| super(Map.class, Set.class); |
| } |
| |
| public Set<Map<K, V>> convert(Map<K, V> obj) throws ConversionException { |
| Set<Map<K, V>> tempSet = FastSet.newInstance(); |
| tempSet.add(obj); |
| return tempSet; |
| } |
| } |
| |
| public static class MapToString<K, V> extends AbstractConverter<Map<K, V>, String> { |
| public MapToString() { |
| super(Map.class, String.class); |
| } |
| |
| public String convert(Map<K, V> obj) throws ConversionException { |
| return obj.toString(); |
| } |
| } |
| |
| public static class StringToList extends GenericSingletonToList<String> { |
| public StringToList() { |
| super(String.class); |
| } |
| |
| @Override |
| public List<String> convert(String obj) throws ConversionException { |
| if (obj.startsWith("[") && obj.endsWith("]")) { |
| return StringUtil.toList(obj); |
| } else { |
| return super.convert(obj); |
| } |
| } |
| } |
| |
| public static class StringToMap extends AbstractConverter<String, Map<String, String>> { |
| public StringToMap() { |
| super(String.class, Map.class); |
| } |
| |
| public Map<String, String> convert(String obj) throws ConversionException { |
| if (obj.startsWith("{") && obj.endsWith("}")) { |
| return StringUtil.toMap(obj); |
| } |
| throw new ConversionException("Could not convert " + obj + " to Map: "); |
| } |
| } |
| |
| public static class StringToSet extends GenericSingletonToSet<String> { |
| public StringToSet() { |
| super(String.class); |
| } |
| |
| @Override |
| public Set<String> convert(String obj) throws ConversionException { |
| if (obj.startsWith("[") && obj.endsWith("]")) { |
| return StringUtil.toSet(obj); |
| } else { |
| return super.convert(obj); |
| } |
| } |
| } |
| |
| public void loadConverters() { |
| Converters.loadContainedConverters(CollectionConverters.class); |
| } |
| } |