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XimpleWare's VTD-XML is, far and away, the industry's most advanced and powerful XML processing model for SOA and Cloud Computing
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/*
* Copyright (C) 2002-2016 XimpleWare, [email protected]
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/*VTD-XML is protected by US patent 7133857, 7260652, an 7761459*/
/*All licenses to any parties in litigation with XimpleWare have been expressly terminated. No new license, and no renewal of any revoked license,
* is granted to those parties as a result of re-downloading software from this or any other website*/
package com.ximpleware.xpath;
import com.ximpleware.*;
/**
* A step is a part of location path as defined in
* Xpath spec
*
*/
public class Step{
public int axis_type;
public NodeTest nt;
public Predicate p,pt;// linked list
public Step nextS; // points to next step
//public int position; // position
public Step prevS; // points to the prev step
public Object o; //AutoPilot or TextIter goes here
public boolean ft; // first time
public boolean hasPredicate;
public boolean nt_eval;
public boolean out_of_range;
public Step(){
nextS = prevS = (Step)null;
p = pt = null;
nt = null;
ft = true;
hasPredicate =false;
nt_eval=false;
out_of_range=false;
//position = 1;
}
final public void reset(VTDNav vn){
ft = true;
if (hasPredicate)
resetP(vn);
//out_of_range=false;
//position = 1;
}
final public void resetP(VTDNav vn){
Predicate temp = p;
while(temp!=null){
temp.reset(vn);
temp = temp.nextP;
}
}
final public void setStep4Predicates(){
Predicate temp = p;
while(temp!=null){
temp.s=this;
temp = temp.nextP;
}
}
final public void resetP(VTDNav vn, Predicate p1){
Predicate temp = p;
while(temp!=p1){
temp.reset(vn);
temp = temp.nextP;
}
}
final public void adjust(int n){
Predicate temp = p;
while(temp!=null){
temp.adjust(n);
temp = temp.nextP;
}
}
final public NodeTest getNodeTest(){
return this.nt;
}
final public Step getNextStep(){
return nextS;
}
final public void setNextStep(Step s){
nextS = s;
}
final public boolean get_ft(){
return ft;
}
final public void set_ft(boolean b){
ft = b;
}
final public Step getPrevStep(){
return prevS;
}
final public void setPrevStep(Step s){
prevS = s;
/*if ((this.axis_type==AxisType.CHILD
|| this.axis_type==AxisType.CHILD0
|| this.axis_type==AxisType.ATTRIBUTE)
&& this.nt.testType==NodeTest.NAMETEST){
}*/
}
final public void setNodeTest(NodeTest n){
nt = n;
if (axis_type == AxisType.CHILD && n.testType ==NodeTest.NAMETEST ){
axis_type = AxisType.CHILD0;
}else if (axis_type == AxisType.DESCENDANT && n.testType ==NodeTest.NAMETEST ){
//if (prevS!=null && prevS.nt.testType==NodeTest.NAMETEST)
axis_type = AxisType.DESCENDANT0;
}else if (axis_type == AxisType.DESCENDANT_OR_SELF && n.testType ==NodeTest.NAMETEST ){
//if (prevS!=null && prevS.nt.testType==NodeTest.NAMETEST)
axis_type = AxisType.DESCENDANT_OR_SELF0;
}else if (axis_type == AxisType.FOLLOWING && n.testType ==NodeTest.NAMETEST ){
axis_type = AxisType.FOLLOWING0;
}else if (axis_type == AxisType.PRECEDING && n.testType ==NodeTest.NAMETEST ){
axis_type = AxisType.PRECEDING0;
}else if (axis_type == AxisType.FOLLOWING_SIBLING && n.testType ==NodeTest.NAMETEST ){
//if (prevS!=null && prevS.nt.testType==NodeTest.NAMETEST)
axis_type = AxisType.FOLLOWING_SIBLING0;
}else if (axis_type == AxisType.PRECEDING_SIBLING&& n.testType ==NodeTest.NAMETEST ){
//if (prevS!=null && prevS.nt.testType==NodeTest.NAMETEST)
axis_type = AxisType.PRECEDING_SIBLING0;
}
if (n.testType== NodeTest.NODE
|| (n.testType==NodeTest.NAMETEST && n.nodeName.equals("*"))){
nt_eval= true;
}
}
final public void setPredicate(Predicate p1){
if (p == null){
p = pt = p1;
} else {
pt.nextP = p1;
pt = pt.nextP;
}
setStep4Predicates();
if (p1!=null) hasPredicate = true;
}
final public boolean eval(VTDNav vn)throws NavException{
/*boolean result = this.nt.eval(vn);
if (result == false)
return false;
return evalPredicates(vn);*/
return nt.eval(vn) && ((!hasPredicate) || evalPredicates(vn));
}
final public boolean eval2(VTDNav vn)throws NavException{
/*boolean result = this.nt.eval(vn);
if (result == false)
return false;
return evalPredicates(vn);*/
//return nt.eval2(vn) && evalPredicates(vn);
return nt.eval2(vn) && ((!hasPredicate) || evalPredicates(vn));
}
final public boolean eval(VTDNav vn, Predicate p) throws NavException{
return nt.eval(vn) && evalPredicates(vn,p);
}
final public boolean eval2(VTDNav vn, Predicate p) throws NavException{
return nt.eval2(vn) && evalPredicates(vn,p);
}
final public boolean evalPredicates(VTDNav vn) throws NavException {
Predicate temp = this.p;
while(temp!=null) {
if (temp.eval(vn)== false)
return false;
temp = temp.nextP;
}
return true;
}
final public boolean evalPredicates(VTDNav vn, Predicate p) throws NavException {
Predicate temp = this.p;
while(temp!=p) {
if (temp.eval(vn)== false)
return false;
temp = temp.nextP;
}
return true;
}
final public void setAxisType(int st){
axis_type = st;
}
final public String toString(){
String s;
if (p == null)
s = axisName(axis_type) + nt;
else
s = axisName(axis_type) + nt + " "+ p ;
if (nextS == null)
return s;
else
return s+"/"+nextS.toString();
}
final public String axisName(int i){
switch(i){
case AxisType.CHILD0:return "child0::";
case AxisType.CHILD: return "child::";
case AxisType.DESCENDANT_OR_SELF0: return "descendant-or-self0::";
case AxisType.DESCENDANT0: return "descendant0::";
case AxisType.PRECEDING0: return "preceding0::";
case AxisType.FOLLOWING0: return "following0::";
case AxisType.DESCENDANT_OR_SELF: return "descendant-or-self::";
case AxisType.DESCENDANT: return "descendant::";
case AxisType.PRECEDING: return "preceding::";
case AxisType.FOLLOWING: return "following::";
case AxisType.PARENT: return "parent::";
case AxisType.ANCESTOR: return "ancestor::";
case AxisType.ANCESTOR_OR_SELF: return "ancestor-or-self::";
case AxisType.SELF: return "self::";
case AxisType.FOLLOWING_SIBLING: return "following-sibling::";
case AxisType.FOLLOWING_SIBLING0: return "following-sibling0::";
case AxisType.PRECEDING_SIBLING: return "preceding-sibling::";
case AxisType.PRECEDING_SIBLING0: return "preceding-sibling0::";
case AxisType.ATTRIBUTE: return "attribute::";
default: return "namespace::";
}
}
}