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//--------------------------------------------------------------------------
// 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;
/**
* @author Luke Blanshard ([email protected])
* @author Drew Davidson ([email protected])
*/
class ASTProperty extends SimpleNode {
private boolean indexedAccess = false;
public ASTProperty(int id) {
super(id);
}
public ASTProperty(OgnlParser p, int id) {
super(p, id);
}
public void setIndexedAccess(boolean value) {
indexedAccess = value;
}
/**
* Returns true iff this property is itself an index reference.
*/
public boolean isIndexedAccess() {
return indexedAccess;
}
/**
* Returns true if this property is described by an IndexedPropertyDescriptor
* and that if followed by an index specifier it will call the index get/set
* methods rather than go through property accessors.
*/
public int getIndexedPropertyType(OgnlContext context, Object source) throws OgnlException {
if (!isIndexedAccess()) {
Object property = getProperty(context, source);
if (property instanceof String) {
return OgnlRuntime.getIndexedPropertyType(context, (source == null) ? null : source.getClass(), (String) property);
}
}
return OgnlRuntime.INDEXED_PROPERTY_NONE;
}
public Object getProperty(OgnlContext context, Object source) throws OgnlException {
return children[0].getValue(context, context.getRoot());
}
protected Object getValueBody(OgnlContext context, Object source) throws OgnlException {
Object result,
property = getProperty(context, source);
Node indexSibling;
result = OgnlRuntime.getProperty(context, source, property);
if (result == null) {
result = OgnlRuntime.getNullHandler(OgnlRuntime.getTargetClass(source)).nullPropertyValue(context, source, property);
}
return result;
}
protected void setValueBody(OgnlContext context, Object target, Object value) throws OgnlException {
OgnlRuntime.setProperty(context, target, getProperty(context, target), value);
}
public boolean isNodeSimpleProperty(OgnlContext context) throws OgnlException {
return (children != null) && (children.length == 1) && ((SimpleNode) children[0]).isConstant(context);
}
public String toString() {
String result;
if (isIndexedAccess()) {
result = "[" + children[0] + "]";
} else {
result = ((ASTConst) children[0]).getValue().toString();
}
return result;
}
}
