package org.jolokia.converter.object;
import java.util.Arrays;
import java.util.List;
import javax.management.openmbean.OpenType;
/*
* Copyright 2009-2011 Roland Huss
*
* 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.
*/
/**
* Converter which converts an string or JSON representation to
* an object represented by an {@link OpenType}.
*
* @author Assaf Berg, roland
* @since 02.08.11
*/
public class StringToOpenTypeConverter extends OpenTypeConverter {
// List of converters used
private List<OpenTypeConverter<? extends OpenType>> converters;
/**
* Constructor
*
* @param pStringToObjectConverter converter for the 'leaf' values.
*/
public StringToOpenTypeConverter(StringToObjectConverter pStringToObjectConverter) {
super(null);
converters = Arrays.asList(
new SimpleTypeConverter(this,pStringToObjectConverter),
new ArrayTypeConverter(this),
new CompositeTypeConverter(this),
new TabularDataConverter(this));
}
/**
* Handle conversion for OpenTypes. The value is expected to be in JSON (either
* an {@link org.json.simple.JSONAware} object or its string representation.
*
* @param openType target type
* @param pValue value to convert from
* @return the converted value
*/
@SuppressWarnings("unchecked")
@Override
public Object convertToObject(OpenType openType, Object pValue) {
if (pValue == null) {
return null;
} else {
for (OpenTypeConverter converter : converters) {
if (converter.canConvert(openType)) {
return converter.convertToObject(openType,pValue);
}
}
throw new IllegalArgumentException(
"Cannot convert " + pValue + " to " + openType + ": " + "No converter could be found");
}
}
/**
* This converter is the parent converter can hence can convert
* all open types
* @param pType type (ignored)
* @return always true
*/
@Override
boolean canConvert(OpenType pType) {
return true;
}
}