/**
* MVEL 2.0
* Copyright (C) 2007 The Codehaus
* Mike Brock, Dhanji Prasanna, John Graham, Mark Proctor
*
* 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.mvel2.ast;
import org.mvel2.PropertyAccessor;
import org.mvel2.compiler.Accessor;
import org.mvel2.integration.VariableResolverFactory;
import org.mvel2.optimizers.AccessorOptimizer;
import org.mvel2.optimizers.OptimizerFactory;
import static org.mvel2.compiler.AbstractParser.getCurrentThreadParserContext;
public class Union extends ASTNode {
private ASTNode main;
private transient Accessor accessor;
public Union(char[] expr, int start, int offset, int fields, ASTNode main) {
super(expr, start, offset, fields);
this.main = main;
}
public Object getReducedValueAccelerated(Object ctx, Object thisValue, VariableResolverFactory factory) {
if (accessor != null) {
return accessor.getValue(main.getReducedValueAccelerated(ctx, thisValue, factory), thisValue, factory);
}
else {
try {
AccessorOptimizer o = OptimizerFactory.getThreadAccessorOptimizer();
accessor = o.optimizeAccessor(getCurrentThreadParserContext(), expr, start, offset,
main.getReducedValueAccelerated(ctx, thisValue, factory), thisValue, factory, false, main.getEgressType());
return o.getResultOptPass();
}
finally {
OptimizerFactory.clearThreadAccessorOptimizer();
}
}
}
public Object getReducedValue(Object ctx, Object thisValue, VariableResolverFactory factory) {
return PropertyAccessor.get(
expr, start, offset,
main.getReducedValue(ctx, thisValue, factory), factory, thisValue);
}
public Class getLeftEgressType() {
return main.getEgressType();
}
public String toString() {
return (main != null ? main.toString() : "") + "-[union]->" + (accessor != null ? accessor.toString() : "");
}
}