// --------------------------------------------------------------------------
// 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 ognl;
import java.util.
Collection;
import java.util.
Map;
import java.util.
Set;
/**
* Implementation of PropertyAccessor that sets and gets properties by storing and looking up values
* in Maps.
*
* @author Luke Blanshard (blanshlu@netscape.net)
* @author Drew Davidson (drew@ognl.org)
*/
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") ||
name.
equals("keySet")) {
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);
}
public
String getSourceAccessor(
OgnlContext context,
Object target,
Object index)
{
Node currentNode = ((
OgnlContext)
context).
getCurrentNode().
jjtGetParent();
boolean
indexedAccess = false;
if (
currentNode == null)
throw new
RuntimeException("node is null for '" +
index + "'");
if (!(
currentNode instanceof
ASTProperty))
currentNode =
currentNode.
jjtGetParent();
if (
currentNode instanceof
ASTProperty)
indexedAccess = ((
ASTProperty)
currentNode).
isIndexedAccess();
String indexStr =
index.
toString();
context.
setCurrentAccessor(
Map.class);
context.
setCurrentType(
Object.class);
if (
String.class.
isInstance(
index) && !
indexedAccess)
{
String key =
indexStr.
replaceAll("\"", "");
if (
key.
equals("size")) {
context.
setCurrentType(int.class);
return ".size()";
} else if (
key.
equals("keys") ||
key.
equals("keySet")) {
context.
setCurrentType(
Set.class);
return ".keySet()";
} else if (
key.
equals("values")) {
context.
setCurrentType(
Collection.class);
return ".values()";
} else if (
key.
equals("isEmpty")) {
context.
setCurrentType(boolean.class);
return ".isEmpty()";
}
}
return ".get(" +
indexStr + ")";
}
public
String getSourceSetter(
OgnlContext context,
Object target,
Object index)
{
context.
setCurrentAccessor(
Map.class);
context.
setCurrentType(
Object.class);
String indexStr =
index.
toString();
if (
String.class.
isInstance(
index))
{
String key =
indexStr.
replaceAll("\"", "");
if (
key.
equals("size"))
return "";
else if (
key.
equals("keys") ||
key.
equals("keySet"))
return "";
else if (
key.
equals("values"))
return "";
else if (
key.
equals("isEmpty"))
return "";
}
return ".put(" +
indexStr + ", $3)";
}
}