//--------------------------------------------------------------------------
// 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.HashMap;
import java.util.Map;
/**
* @author Luke Blanshard ([email protected])
* @author Drew Davidson ([email protected])
*/
class ASTMap extends SimpleNode {
private static Class DEFAULT_MAP_CLASS;
private String className;
static {
/* Try to get LinkedHashMap; if older JDK than 1.4 use HashMap */
try {
DEFAULT_MAP_CLASS = Class.forName("java.util.LinkedHashMap");
} catch (ClassNotFoundException ex) {
DEFAULT_MAP_CLASS = HashMap.class;
}
}
public ASTMap(int id) {
super(id);
}
public ASTMap(OgnlParser p, int id) {
super(p, id);
}
protected void setClassName(String value) {
className = value;
}
protected Object getValueBody(OgnlContext context, Object source) throws OgnlException {
Map answer;
if (className == null) {
try {
answer = (Map) DEFAULT_MAP_CLASS.newInstance();
} catch (Exception ex) {
/* This should never happen */
throw new OgnlException("Default Map class '" + DEFAULT_MAP_CLASS.getName() + "' instantiation error", ex);
}
} else {
try {
answer = (Map) OgnlRuntime.classForName(context, className).newInstance();
} catch (Exception ex) {
throw new OgnlException("Map implementor '" + className + "' not found", ex);
}
}
for (int i = 0; i < jjtGetNumChildren(); ++i) {
ASTKeyValue kv = (ASTKeyValue) children[i];
Node k = kv.getKey(),
v = kv.getValue();
answer.put(k.getValue(context, source), (v == null) ? null : v.getValue(context, source));
}
return answer;
}
public String toString() {
String result = "#";
if (className != null) {
result = result + "@" + className + "@";
}
result = result + "{ ";
for (int i = 0; i < jjtGetNumChildren(); ++i) {
ASTKeyValue kv = (ASTKeyValue) children[i];
if (i > 0) {
result = result + ", ";
}
result = result + kv.getKey() + " : " + kv.getValue();
}
return result + " }";
}
}
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