//--------------------------------------------------------------------------
// 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 ognl.enhance.
ExpressionCompiler;
import ognl.enhance.
OrderedReturn;
/**
* @author Luke Blanshard (blanshlu@netscape.net)
* @author Drew Davidson (drew@ognl.org)
*/
public class
ASTSequence extends
SimpleNode implements
NodeType,
OrderedReturn
{
private
Class _getterClass;
private
String _lastExpression;
private
String _coreExpression;
public
ASTSequence(int
id) {
super(
id);
}
public
ASTSequence(
OgnlParser p, int
id) {
super(
p,
id);
}
public void
jjtClose() {
flattenTree();
}
protected
Object getValueBody(
OgnlContext context,
Object source ) throws
OgnlException
{
Object result = null;
for ( int
i=0;
i <
_children.length; ++
i )
{
result =
_children[
i].
getValue(
context,
source );
}
return
result; // The result is just the last one we saw.
}
protected void
setValueBody(
OgnlContext context,
Object target,
Object value ) throws
OgnlException {
int
last =
_children.length - 1;
for ( int
i=0;
i <
last; ++
i ) {
_children[
i].
getValue(
context,
target );
}
_children[
last].
setValue(
context,
target,
value );
}
public
Class getGetterClass()
{
return
_getterClass;
}
public
Class getSetterClass()
{
return null;
}
public
String getLastExpression()
{
return
_lastExpression;
}
public
String getCoreExpression()
{
return
_coreExpression;
}
public
String toString()
{
String result = "";
for ( int
i=0;
i <
_children.length; ++
i ) {
if (
i > 0) {
result =
result + ", ";
}
result =
result +
_children[
i];
}
return
result;
}
public
String toSetSourceString(
OgnlContext context,
Object target)
{
return "";
}
public
String toGetSourceString(
OgnlContext context,
Object target)
{
String result = "";
NodeType _lastType = null;
for (int
i = 0;
i <
_children.length; ++
i)
{
//System.out.println("astsequence child : " + _children[i].getClass().getName());
String seqValue =
_children[
i].
toGetSourceString(
context,
target);
if ((
i + 1) <
_children.length
&&
ASTOr.class.
isInstance(
_children[
i])) {
seqValue = "(" +
seqValue + ")";
}
if (
i > 0 &&
ASTProperty.class.
isInstance(
_children[
i])
&&
seqValue != null &&
seqValue.
trim().
length() > 0)
{
String pre = (
String)
context.
get("_currentChain");
if (
pre == null)
pre = "";
seqValue =
ExpressionCompiler.
getRootExpression(
_children[
i],
context.
getRoot(),
context) +
pre +
seqValue;
context.
setCurrentAccessor(
context.
getRoot().
getClass());
}
if ((
i + 1) >=
_children.length)
{
_coreExpression =
result;
_lastExpression =
seqValue;
}
if (
seqValue != null &&
seqValue.
trim().
length() > 0 && (
i + 1) <
_children.length)
result +=
seqValue + ";";
else if (
seqValue != null &&
seqValue.
trim().
length() > 0)
result +=
seqValue;
// set last known type from last child with a type
if (
NodeType.class.
isInstance(
_children[
i]) && ((
NodeType)
_children[
i]).
getGetterClass() != null)
_lastType = (
NodeType)
_children[
i];
}
if (
_lastType != null)
{
_getterClass =
_lastType.
getGetterClass();
}
return
result;
}
}