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Java > Open Source Codes > com > ibatis > sqlmap > engine > mapping > sql > dynamic > elements > IsPropertyAvailableTagHandler


1 /*
2  * Copyright 2004 Clinton Begin
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 package com.ibatis.sqlmap.engine.mapping.sql.dynamic.elements;
17
18 import com.ibatis.common.beans.Probe;
19 import com.ibatis.common.beans.ProbeFactory;
20
21 import java.util.Map JavaDoc;
22
23 public class IsPropertyAvailableTagHandler extends ConditionalTagHandler {
24
25   private static final Probe PROBE = ProbeFactory.getProbe();
26
27   public boolean isCondition(SqlTagContext ctx, SqlTag tag, Object JavaDoc parameterObject) {
28     if (parameterObject == null) {
29       return false;
30     } else if (parameterObject instanceof Map JavaDoc) {
31       return ((Map JavaDoc)parameterObject).containsKey(tag.getPropertyAttr());
32     } else {
33       return PROBE.hasReadableProperty(parameterObject, tag.getPropertyAttr());
34     }
35   }
36
37 }
38
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