package org.drools.process.core.datatype.impl.type;
/*
* Copyright 2005 JBoss Inc
*
* 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.
*/
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import org.drools.process.core.datatype.DataType;
import com.thoughtworks.xstream.XStream;
/**
* Representation of an object datatype.
*
* @author <a href="mailto:kris_verlaenen@hotmail.com">Kris Verlaenen</a>
*/
public class ObjectDataType implements DataType {
private static final long serialVersionUID = 4L;
private String className;
public ObjectDataType() {
}
public ObjectDataType(String className) {
setClassName(className);
}
public String getClassName() {
return className;
}
public void setClassName(String className) {
this.className = className;
}
public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
className = (String) in.readObject();
}
public void writeExternal(ObjectOutput out) throws IOException {
out.writeObject(className);
}
public boolean verifyDataType(final Object value) {
if (value == null) {
return true;
}
try {
Class<?> clazz = Class.forName(className);
if (clazz.isInstance(value)) {
return true;
}
} catch (ClassNotFoundException e) {
throw new IllegalArgumentException(
"Could not find data type " + className);
}
return false;
}
public Object readValue(String value) {
XStream xstream = new XStream();
return xstream.fromXML(value);
}
public String writeValue(Object value) {
XStream xstream = new XStream();
return xstream.toXML(value);
}
public String getStringType() {
return className == null ? "java.lang.Object" : className;
}
}