01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * http://www.apache.org/licenses/LICENSE-2.0
10: *
11: * Unless required by applicable law or agreed to in writing, software
12: * distributed under the License is distributed on an "AS IS" BASIS,
13: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14: * See the License for the specific language governing permissions and
15: * limitations under the License.
16: */
17:
18: package org.apache.el.lang;
19:
20: import java.io.Externalizable;
21: import java.io.IOException;
22: import java.io.ObjectInput;
23: import java.io.ObjectOutput;
24: import java.util.HashMap;
25: import java.util.Map;
26:
27: import javax.el.ValueExpression;
28: import javax.el.VariableMapper;
29:
30: public class VariableMapperImpl extends VariableMapper implements
31: Externalizable {
32:
33: private static final long serialVersionUID = 1L;
34:
35: private Map vars = new HashMap();
36:
37: public VariableMapperImpl() {
38: super ();
39: }
40:
41: public ValueExpression resolveVariable(String variable) {
42: return (ValueExpression) this .vars.get(variable);
43: }
44:
45: public ValueExpression setVariable(String variable,
46: ValueExpression expression) {
47: return (ValueExpression) this .vars.put(variable, expression);
48: }
49:
50: public void readExternal(ObjectInput in) throws IOException,
51: ClassNotFoundException {
52: this .vars = (Map) in.readObject();
53: }
54:
55: public void writeExternal(ObjectOutput out) throws IOException {
56: out.writeObject(this.vars);
57: }
58: }
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