/*
* 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.apache.jackrabbit.ocm.manager.enumconverter;
import java.io.InvalidClassException;
import javax.jcr.Value;
import javax.jcr.ValueFactory;
import org.apache.commons.lang.StringUtils;
import org.apache.jackrabbit.ocm.manager.atomictypeconverter.AtomicTypeConverter;
/**
*
* SimpleEnumerationTypeConverter class.
*
* This converter can map type Enum (java.lang.Enum) to JCR properties and back.
*
* @author <a href="mailto:boni.g@bioimagene.com">Boni Gopalan</a>
*/
public class EnumTypeConverter implements AtomicTypeConverter {
public Object getObject(Value value) {
try {
String propertyValue = value.getString();
String[] enumerationDef = StringUtils.split(propertyValue, ':');
String enumerationClass = enumerationDef[0];
String enumerationValue = enumerationDef[1];
Enum[] enumerations = (Enum[]) Class.forName(enumerationClass)
.getEnumConstants();
int size = enumerations.length;
for (int i = 0; i < size; i++) {
if (enumerations[i].name().equals(enumerationValue)) {
return enumerations[i];
}
}
throw new RuntimeException(new InvalidClassException(enumerationClass +
" Does not contain an enumeration " + enumerationValue));
} catch (Exception e) {
throw new RuntimeException(e);
}
}
public Value getValue(ValueFactory valueFactory, Object object) {
if (object == null) {
return null;
}
if (!(object instanceof Enum)) {
throw new RuntimeException(new InvalidClassException(EnumTypeConverter.class.getSimpleName() +
" Can only convert simple Enumerations"));
}
String value;
Enum anEnum = (Enum) (object);
value = anEnum.getDeclaringClass().getName() + ":" + anEnum.name();
return valueFactory.createValue(value);
}
public String getXPathQueryValue(ValueFactory valueFactory, Object object) {
Value value = getValue(valueFactory, object);
try {
return "'" + value.getString() + "'";
} catch (Exception e) {
throw new RuntimeException(e.fillInStackTrace());
}
}
}