/**
* MVEL (The MVFLEX Expression Language)
*
* Copyright (C) 2007 Christopher Brock, MVFLEX/Valhalla Project and the Codehaus
*
* 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.drools.base.mvel;
import org.mvel2.CompileException;
import org.mvel2.DataConversion;
import org.mvel2.integration.VariableResolver;
public class LocalVariableResolver implements VariableResolver {
private String name;
private Class knownType;
private DroolsLocalVariableMVELFactory factory;
private boolean cache = false;
public LocalVariableResolver(DroolsLocalVariableMVELFactory factory, String name) {
this.factory = factory;
this.name = name;
}
public LocalVariableResolver(DroolsLocalVariableMVELFactory factory, String name, Class knownType) {
this.name = name;
this.knownType = knownType;
this.factory = factory;
}
public LocalVariableResolver(DroolsLocalVariableMVELFactory factory, String name, boolean cache) {
this.factory = factory;
this.name = name;
this.cache = cache;
}
public LocalVariableResolver(DroolsLocalVariableMVELFactory factory, String name, Class knownType, boolean cache) {
this.name = name;
this.knownType = knownType;
this.factory = factory;
this.cache = cache;
}
public void setName(String name) {
this.name = name;
}
public void setStaticType(Class knownType) {
this.knownType = knownType;
}
public String getName() {
return name;
}
public Class getType() {
return knownType;
}
public void setValue(Object value) {
if (knownType != null && value != null && value.getClass() != knownType) {
if (!DataConversion.canConvert(knownType, value.getClass())) {
throw new CompileException("cannot assign " + value.getClass().getName() + " to type: "
+ knownType.getName());
}
try {
value = DataConversion.convert(value, knownType);
}
catch (Exception e) {
throw new CompileException("cannot convert value of " + value.getClass().getName()
+ " to: " + knownType.getName());
}
}
this.factory.setLocalValue( this.name, value );
}
public Object getValue() {
return this.factory.getLocalValue( this.name );
}
public int getFlags() {
return 0;
}
public boolean isCache() {
return cache;
}
public void setCache(boolean cache) {
this.cache = cache;
}
}