//--------------------------------------------------------------------------
// Copyright (c) 1998-2004, Drew Davidson and Luke Blanshard
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// Neither the name of the Drew Davidson nor the names of its contributors
// may be used to endorse or promote products derived from this software
// without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
// COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
// OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
// AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
// DAMAGE.
//--------------------------------------------------------------------------
package org.apache.ibatis.ognl;
import java.util.Map;
/**
* Implementation of PropertyAccessor that sets and gets properties by storing and looking
* up values in Maps.
*
* @author Luke Blanshard ([email protected])
* @author Drew Davidson ([email protected])
*/
public class MapPropertyAccessor implements PropertyAccessor {
public Object getProperty(Map context, Object target, Object name) throws OgnlException {
Object result;
Map map = (Map) target;
Node currentNode = ((OgnlContext) context).getCurrentNode().jjtGetParent();
boolean indexedAccess = false;
if (currentNode == null) {
throw new OgnlException("node is null for '" + name + "'");
}
if (!(currentNode instanceof ASTProperty)) {
currentNode = currentNode.jjtGetParent();
}
if (currentNode instanceof ASTProperty) {
indexedAccess = ((ASTProperty) currentNode).isIndexedAccess();
}
if ((name instanceof String) && !indexedAccess) {
if (name.equals("size")) {
result = new Integer(map.size());
} else {
if (name.equals("keys")) {
result = map.keySet();
} else {
if (name.equals("values")) {
result = map.values();
} else {
if (name.equals("isEmpty")) {
result = map.isEmpty() ? Boolean.TRUE : Boolean.FALSE;
} else {
result = map.get(name);
}
}
}
}
} else {
result = map.get(name);
}
return result;
}
public void setProperty(Map context, Object target, Object name, Object value) throws OgnlException {
Map map = (Map) target;
map.put(name, value);
}
}
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