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Source code: com/ibatis/sqlmap/engine/mapping/sql/dynamic/elements/IsPropertyAvailableTagHandler.java


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;
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 parameterObject) {
28      if (parameterObject == null) {
29        return false;
30      } else if (parameterObject instanceof Map) {
31        return ((Map)parameterObject).containsKey(tag.getPropertyAttr());      
32      } else {
33        return PROBE.hasReadableProperty(parameterObject, tag.getPropertyAttr());
34      }
35    }
36  
37  }