/*
* 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.el.lang;
import java.io.Externalizable;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.io.Serial;
import java.util.HashMap;
import java.util.Map;
import jakarta.el.ValueExpression;
import jakarta.el.VariableMapper;
public class VariableMapperImpl extends VariableMapper implements Externalizable {
@Serial
private static final long serialVersionUID = 1L;
private Map<String,ValueExpression> vars = new HashMap<>();
public VariableMapperImpl() {
super();
}
@Override
public ValueExpression resolveVariable(String variable) {
return this.vars.get(variable);
}
@Override
public ValueExpression setVariable(String variable, ValueExpression expression) {
if (expression == null) {
return vars.remove(variable);
} else {
return vars.put(variable, expression);
}
}
@SuppressWarnings("unchecked")
@Override
public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
this.vars = (Map<String,ValueExpression>) in.readObject();
}
@Override
public void writeExternal(ObjectOutput out) throws IOException {
out.writeObject(this.vars);
}
}