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Java > Open Source Codes > org > apache > jasper > tagplugins > jstl > core > Remove


1 /*
2  * Licensed to the Apache Software Foundation (ASF) under one or more
3  * contributor license agreements. See the NOTICE file distributed with
4  * this work for additional information regarding copyright ownership.
5  * The ASF licenses this file to You under the Apache License, Version 2.0
6  * (the "License"); you may not use this file except in compliance with
7  * the License. You may obtain a copy of the License at
8  *
9  * 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
19 package org.apache.jasper.tagplugins.jstl.core;
20
21 import org.apache.jasper.compiler.tagplugin.TagPlugin;
22 import org.apache.jasper.compiler.tagplugin.TagPluginContext;
23 import org.apache.jasper.tagplugins.jstl.Util;
24
25 public class Remove implements TagPlugin {
26     
27     public void doTag(TagPluginContext ctxt) {
28         
29         //scope flag
30
boolean hasScope = ctxt.isAttributeSpecified("scope");
31         
32         //the value of the "var"
33
String JavaDoc strVar = ctxt.getConstantAttribute("var");
34         
35         //remove attribute from certain scope.
36
//default scope is "page".
37
if(hasScope){
38             int iScope = Util.getScope(ctxt.getConstantAttribute("scope"));
39             ctxt.generateJavaSource("pageContext.removeAttribute(\"" + strVar + "\"," + iScope + ");");
40         }else{
41             ctxt.generateJavaSource("pageContext.removeAttribute(\"" + strVar + "\");");
42         }
43     }
44     
45 }
46
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