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map converters

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This commit is contained in:
Keith Donald
2009-09-23 04:45:04 +00:00
parent 1ee4ac1b52
commit 187d025c19
3 changed files with 89 additions and 6 deletions
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1
org.springframework.core/src/main/java/org/springframework/core/convert/support/GenericConversionService.java
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@@ -192,6 +192,7 @@ public class GenericConversionService implements ConversionService, ConverterReg
addGenericConverter(Collection.class, String.class, new CollectionToStringGenericConverter(this));
addGenericConverter(Collection.class, Object.class, new CollectionToObjectGenericConverter(this));
addGenericConverter(Map.class, Map.class, new MapToMapGenericConverter(this));
addGenericConverter(Map.class, String[].class, new MapToStringArrayGenericConverter(this));
addGenericConverter(String.class, Object[].class, new StringToArrayGenericConverter(this));
addGenericConverter(String.class, Collection.class, new StringToCollectionGenericConverter(this));
addGenericConverter(String.class, Map.class, new StringToMapGenericConverter(this));

58
org.springframework.core/src/main/java/org/springframework/core/convert/support/MapToStringArrayGenericConverter.java Normal file
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@@ -0,0 +1,58 @@
/*
* Copyright 2002-2009 the original author or authors.
*
* Licensed 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.springframework.core.convert.support;
import java.lang.reflect.Array;
import java.util.Map;
import org.springframework.core.convert.TypeDescriptor;
final class MapToStringArrayGenericConverter implements GenericConverter {
private final GenericConversionService conversionService;
public MapToStringArrayGenericConverter(GenericConversionService conversionService) {
this.conversionService = conversionService;
}
public Object convert(Object source, TypeDescriptor sourceType, TypeDescriptor targetType) {
Map sourceMap = (Map) source;
TypeDescriptor sourceKeyType = sourceType.getMapKeyTypeDescriptor();
TypeDescriptor sourceValueType = sourceType.getMapValueTypeDescriptor();
TypeDescriptor targetElementType = targetType.getElementTypeDescriptor();
boolean keysCompatible = false;
if (sourceKeyType.isAssignableTo(targetElementType)) {
keysCompatible = true;
}
boolean valuesCompatible = false;
if (sourceValueType.isAssignableTo(targetElementType)) {
valuesCompatible = true;
}
Object array = Array.newInstance(targetElementType.getType(), sourceMap.size());
MapEntryConverter converter = new MapEntryConverter(sourceKeyType, sourceValueType, targetElementType, targetElementType, keysCompatible, valuesCompatible, conversionService);
int i = 0;
for (Object entry : sourceMap.entrySet()) {
Map.Entry mapEntry = (Map.Entry) entry;
Object key = mapEntry.getKey();
Object value = mapEntry.getValue();
String property = converter.convertKey(key) + "=" + converter.convertValue(value);
Array.set(array, i, property);
i++;
}
return array;
}
}