internal override XPathNavigator advance()
{
if (_VarQuery != null)
{
return(_VarQuery.advance());
}
throw new XPathException(Res.Xp_UndefinedXsltContext, Prefix, Name);
} // Advance
internal Boolean toBoolean(XPathNavigator qyContext, XPathNodeIterator iterator)
{
if (_qy.ReturnType() == XPathResultType.NodeSet)
{
_qy.setContext(qyContext.Clone());
XPathNavigator value = _qy.advance();
if (value != null)
{
return(true);
}
else
{
return(false);
}
}
else if (_qy.ReturnType() == XPathResultType.String)
{
object result = _qy.getValue(qyContext, iterator);
if (result.ToString().Length > 0)
{
return(true);
}
else
{
if (result is string)
{
return(false);
}
else
{
Debug.Assert(result is XPathNavigator);
return(true); // RTF can't be empty ?
}
}
}
else if (_qy.ReturnType() == XPathResultType.Boolean)
{
return(Convert.ToBoolean(_qy.getValue(qyContext, iterator)));
}
else if (_qy.ReturnType() == XPathResultType.Number)
{
return(toBoolean(XmlConvert.ToXPathDouble(_qy.getValue(qyContext, iterator))));
}
return(false);
} // toBoolean
internal bool matches(IQuery e, XPathNavigator context)
{
if (_opnd == null)
{
return(false);
}
XPathResultType resultType = _opnd.ReturnType();
if (resultType == XPathResultType.Number)
{
double i = XmlConvert.ToXPathDouble(_opnd.getValue(e));
return(i == e.Position);
}
if (resultType == XPathResultType.NodeSet)
{
_opnd.setContext(context);
if (_opnd.advance() != null)
{
return(true);
}
else
{
return(false);
}
}
if (resultType == XPathResultType.Boolean)
{
return(Convert.ToBoolean(_opnd.getValue(e)));
}
if (resultType == XPathResultType.String)
{
if (_opnd.getValue(context, null).ToString().Length > 0)
{
return(true);
}
else
{
return(false);
}
}
return(false);
}
public override bool MoveNext()
{
nav = query.advance();
if (nav != null)
{
position++;
return(true);
}
else
{
return(false);
}
}
public override bool MoveNext()
{
XPathNavigator n = query.advance();
if (n != null)
{
position++;
if (!nav.MoveTo(n))
{
nav = n;
}
return(true);
}
return(false);
}
private String toString(XPathNavigator qyContext, XPathNodeIterator iterator)
{
if (_ArgList != null && _ArgList.Count > 0)
{
IQuery _qy = (IQuery)_ArgList[0];
if (_qy.ReturnType() == XPathResultType.NodeSet)
{
_qy.setContext(qyContext.Clone());
XPathNavigator value = _qy.advance();
if (value != null)
{
return(value.Value);
}
else
{
return(String.Empty);
}
}
else if (_qy.ReturnType() == XPathResultType.String)
{
return(_qy.getValue(qyContext, iterator).ToString());
}
else if (_qy.ReturnType() == XPathResultType.Boolean)
{
return(Convert.ToBoolean(_qy.getValue(qyContext, iterator)) ? "true" : "false");
}
else
{
return(toString(XmlConvert.ToXPathDouble(_qy.getValue(qyContext, iterator))));
}
}
else if (qyContext != null)
{
return(qyContext.Value);
}
else
{
return(String.Empty);
}
}
private String toString(IQuery qyContext)
{
XPathNavigator value = null;
if (_ArgList != null && _ArgList.Count > 0)
{
IQuery _qy = (IQuery)_ArgList[0];
if (_qy.ReturnType() == XPathResultType.NodeSet)
{
_qy.setContext(qyContext.peekElement().Clone());
value = _qy.advance();
if (value != null)
{
return(value.Value);
}
else
{
return(String.Empty);
}
}
else if (_qy.ReturnType() == XPathResultType.String)
{
return(_qy.getValue(qyContext).ToString());
}
else if (_qy.ReturnType() == XPathResultType.Boolean)
{
return(toString(Convert.ToBoolean(_qy.getValue(qyContext))));
}
return(toString(XmlConvert.ToXPathDouble(_qy.getValue(qyContext))));
}
else
if ((value = qyContext.peekElement()) != null)
{
return(value.Value);
}
else
{
return(String.Empty);
}
}
private void BuildResultsList()
{
XPathNavigator eNext;
SortKey key;
Int32 numSorts = _sortExpressions.Count;
System.Diagnostics.Debug.Assert(numSorts > 0, "Why was the sort query created?");
while (true)
{
eNext = _qyInput.advance();
if (eNext == null)
{
break;
}
// if this is the first time i.e., the cache is empty
// and if we an xslt context to work with
/* if (_ResultCount == 0 && _context != null)
* for (Int32 i=0; i<numSorts; i++)
* ((IQuery)_sortExpressions[i]).SetXsltContext(_context);*/
// create the special object that represent the composite key
// This key object will act as a container for the primary key value,
// secondary key value etc.
key = new SortKey(numSorts);
for (Int32 j = 0; j < numSorts; j++)
{
object keyval = ((IQuery)_sortExpressions[j]).getValue(_qyInput);
key.SetKeyValue(keyval, j);
}
_Results.Add(key, eNext.Clone());
_ResultCount++;
}
}
private void BuildResultsList()
{
Int32 numSorts = this.comparer.NumSorts;
Debug.Assert(numSorts > 0, "Why was the sort query created?");
XPathNavigator eNext;
while ((eNext = _qyInput.advance()) != null)
{
SortKey key = new SortKey(numSorts, /*originalPosition:*/ this.results.Count, eNext.Clone());
for (Int32 j = 0; j < numSorts; j++)
{
object keyval = this.comparer.Expression(j).getValue(_qyInput);
key[j] = keyval;
}
results.Add(key);
}
results.Sort(this.comparer);
}
internal void FillList()
{
_elementList = new ArrayList();
while (true)
{
if (_getInput1)
{
_getInput1 = false;
if ((m_eNext = m_qyInput.advance()) == null)
{
_top = _elementList.Count;
return;
}
_child.setContext(m_eNext);
}
while ((m_eNext = _child.advance()) != null)
{
//if ( matches( _child, m_eNext) ) {
NotVisited(m_eNext);
//}
}
_getInput1 = true;
}
}
private double Number(XPathNavigator qyContext, XPathNodeIterator iterator)
{
if (_qy != null)
{
if (_qy.ReturnType() == XPathResultType.NodeSet)
{
_qy.setContext(qyContext.Clone());
XPathNavigator value = _qy.advance();
if (value != null)
{
return(Number(value.Value));
}
else
{
return(double.NaN);
}
}
else
if (_qy.ReturnType() == XPathResultType.String)
{
return(Number(_qy.getValue(qyContext, iterator).ToString()));
}
else
if (_qy.ReturnType() == XPathResultType.Boolean)
{
return(Number(Convert.ToBoolean(_qy.getValue(qyContext, iterator))));
}
else
{
return(XmlConvert.ToXPathDouble(_qy.getValue(qyContext, iterator)));
}
}
else
if (qyContext != null)
{
return(XmlConvert.ToXPathDouble(qyContext.Value));
}
else
{
return(double.NaN);
}
}
static bool compareQueryString1(IQuery opnd1, IQuery opnd2, XPathNavigator qyContext, Operator.Op op, XPathNodeIterator iterator) {
XPathNavigator val1;
opnd1.setContext(qyContext.Clone());
String n2 = XmlConvert.ToXPathString(opnd2.getValue(qyContext, iterator));
while ((val1 = opnd1.advance()) != null) {
if (op == Operator.Op.EQ) {
if (val1.Value == n2) return true;
}
else if (val1.Value != n2) return true;
}
return false;
}
static bool compareQueryString2(IQuery opnd1, IQuery opnd2, IQuery qyContext, Operator.Op op) {
XPathNavigator val1;
opnd1.setContext(qyContext.peekElement().Clone());
double n1, n2 = NumberFunctions.Number(XmlConvert.ToXPathString(opnd2.getValue(qyContext)));
while (true) {
val1 = opnd1.advance();
if (val1 != null)
n1 = NumberFunctions.Number(val1.Value);
else
return false;
switch (op) {
case Operator.Op.LT :if (n1 < n2) return true;
break;
case Operator.Op.GT :if (n1 > n2) return true;
break;
case Operator.Op.LE :if (n1 <= n2) return true;
break;
case Operator.Op.GE :if (n1 >= n2) return true;
break;
case Operator.Op.EQ :if (n1 == n2) return true;
break;
case Operator.Op.NE :if (n1 != n2) return true;
break;
}
}
}
internal override object getValue(IQuery qyContext)
{
XPathNavigator eNext;
switch (_FType)
{
case FT.FuncPosition:
if (qyContext != null)
{
return((double)qyContext.Position);
}
break;
case FT.FuncLast:
if (qyContext != null)
{
if (checkWhitespace)
{
return((double)((PositionQuery)qyContext).getNonWSCount(context));
}
try {
return((double)((PositionQuery)qyContext).getCount());
}
catch (Exception) {
if (last == -1)
{
last = 0;
IQuery temp = qyContext.Clone();
while (temp.advance() != null)
{
last++;
}
}
return(last);
}
}
break;
case FT.FuncCount:
int i = 0;
_Opnd.setContext(qyContext.peekElement());
if (checkWhitespace)
{
XPathNavigator nav;
while ((nav = _Opnd.advance()) != null)
{
if (nav.NodeType != XPathNodeType.Whitespace || context.PreserveWhitespace(nav))
{
i++;
}
}
return((double)i);
}
while (_Opnd.advance() != null)
{
i++;
}
return((double)i);
case FT.FuncNameSpaceUri:
if (_Opnd != null)
{
_Opnd.setContext(qyContext.peekElement());
if ((eNext = _Opnd.advance()) != null)
{
return(eNext.NamespaceURI);
}
else
{
return(String.Empty);
}
}
return(qyContext.peekElement().NamespaceURI);
case FT.FuncLocalName:
if (_Opnd != null)
{
_Opnd.setContext(qyContext.peekElement().Clone());
if ((eNext = _Opnd.advance()) != null)
{
return(eNext.LocalName);
}
else
{
return(String.Empty);
}
}
return(qyContext.peekElement().LocalName);
case FT.FuncName:
if (_Opnd != null)
{
_Opnd.setContext(qyContext.peekElement().Clone());
if ((eNext = _Opnd.advance()) != null)
{
return(eNext.Name);
}
else
{
return(String.Empty);
}
}
return(qyContext.peekElement().Name);
}
return(String.Empty);
}
static bool compareStringQuery1(IQuery opnd1, IQuery opnd2, XPathNavigator qyContext, Operator.Op op , XPathNodeIterator iterator) {
XPathNavigator val1;
opnd2.setContext(qyContext.Clone());
String n2, n1 = XmlConvert.ToXPathString(opnd1.getValue(qyContext, iterator));
while (true) {
val1 = opnd2.advance();
if (val1 != null)
n2 = val1.Value;
else
return false;
switch (op) {
case Operator.Op.EQ : if (n1 == n2) return true ;
break;
case Operator.Op.NE : if (n1 != n2) return true ;
break;
}
}
}
static bool compareStringQuery2(IQuery opnd1, IQuery opnd2, XPathNavigator qyContext, Operator.Op op, XPathNodeIterator iterator) {
XPathNavigator val1;
opnd2.setContext(qyContext.Clone());
double n2, n1 = NumberFunctions.Number(XmlConvert.ToXPathString(opnd1.getValue(qyContext, iterator)));
while (true) {
val1 = opnd2.advance();
if (val1 != null)
n2 = NumberFunctions.Number(val1.Value);
else
return false;
switch (op) {
case Operator.Op.LT :if (n1 < n2) return true ;
break;
case Operator.Op.GT :if (n1 > n2) return true ;
break;
case Operator.Op.LE :if (n1 <= n2) return true ;
break;
case Operator.Op.GE :if (n1 >= n2) return true ;
break;
case Operator.Op.EQ :if (n1 == n2) return true ;
break;
case Operator.Op.NE :if (n1 != n2) return true ;
break;
}
}
}
internal override XPathNavigator advance()
{
return(_ResultQuery.advance());
}
static bool compareQueryBool1(IQuery opnd1, IQuery opnd2, IQuery qyContext, Operator.Op op) {
XPathNavigator val1;
opnd1.setContext(qyContext.peekElement().Clone());
Boolean n1 = false, n2 = Convert.ToBoolean(opnd2.getValue(qyContext));
val1 = opnd1.advance();
if (val1 != null) {
n1 = true;
}
else {
if (op == Operator.Op.EQ ) {
return (n2 == n1);
}
return (n2 != n1);
}
switch (op) {
case Operator.Op.EQ : return (n1 == n2) ;
case Operator.Op.NE : return (n1 != n2) ;
}
return false;
}
static bool compareQueryQuery2(
IQuery opnd1,
IQuery opnd2,
IQuery qyContext,
Operator.Op op) {
XPathNavigator val1, val2;
double n1,n2;
opnd1.setContext(qyContext.peekElement().Clone());
opnd2.setContext(qyContext.peekElement().Clone());
while (true) {
val1 = opnd1.advance();
if (val1 != null)
n1 = NumberFunctions.Number(val1.Value);
else
return false;
val2 = opnd2.advance();
if (val2 != null)
n2 = NumberFunctions.Number(val2.Value);
else
return false;
while (true) {
switch (op) {
case Operator.Op.LT : if (n1 < n2) return true;
break;
case Operator.Op.GT : if (n1 > n2) return true;
break;
case Operator.Op.LE : if (n1 <= n2) return true;
break;
case Operator.Op.GE : if (n1 >= n2) return true;
break;
case Operator.Op.EQ : if (n1 == n2) return true;
break;
case Operator.Op.NE : if (n1 != n2) return true;
break;
}
val2 = opnd2.advance();
if (val2 != null)
n2 = NumberFunctions.Number(val2.Value);
else {
opnd2.reset();
break;
}
}
}
}
static bool compareQueryBool2(IQuery opnd1, IQuery opnd2, IQuery qyContext, Operator.Op op) {
XPathNavigator val1;
opnd1.setContext(qyContext.peekElement().Clone());
double n1, n2 = NumberFunctions.Number(Convert.ToBoolean(opnd2.getValue(qyContext)));
val1 = opnd1.advance();
if (val1 != null)
n1 = 1.0;
else {
n1 = 0;
switch (op) {
case Operator.Op.LT : return (n1 < n2) ;
case Operator.Op.GT : return (n1 > n2) ;
case Operator.Op.LE : return (n1 <= n2) ;
case Operator.Op.GE : return (n1 >= n2) ;
}
}
switch (op) {
case Operator.Op.LT : return (n1 < n2) ;
case Operator.Op.GT : return (n1 > n2) ;
case Operator.Op.LE : return (n1 <= n2) ;
case Operator.Op.GE : return (n1 >= n2) ;
}
return false;
}
static bool compareBoolQuery2(IQuery opnd1, IQuery opnd2, XPathNavigator qyContext, Operator.Op op, XPathNodeIterator iterator) {
XPathNavigator val1;
opnd2.setContext(qyContext.Clone());
double n2, n1 = NumberFunctions.Number(Convert.ToBoolean(opnd1.getValue(qyContext, iterator)));
val1 = opnd2.advance();
if (val1 != null)
n2 = 1.0;
else {
n2 = 0;
switch (op) {
case Operator.Op.LT : return (n1 < n2) ;
case Operator.Op.GT : return (n1 > n2) ;
case Operator.Op.LE : return (n1 <= n2) ;
case Operator.Op.GE : return (n1 >= n2) ;
}
}
switch (op) {
case Operator.Op.LT : return (n1 < n2) ;
case Operator.Op.GT : return (n1 > n2) ;
case Operator.Op.LE : return (n1 <= n2) ;
case Operator.Op.GE : return (n1 >= n2) ;
}
return false;
}
static bool compareBoolQuery1(IQuery opnd1, IQuery opnd2, XPathNavigator qyContext, Operator.Op op, XPathNodeIterator iterator) {
XPathNavigator val1;
opnd2.setContext(qyContext.Clone());
Boolean n2 = false, n1 = Convert.ToBoolean(opnd1.getValue(qyContext, iterator));
val1 = opnd2.advance();
if (val1 != null)
n2 = true;
else {
if (op == Operator.Op.EQ ) {
return (n2 == n1);
}
return (n2 != n1);
}
switch (op) {
case Operator.Op.EQ : return (n1 == n2) ;
case Operator.Op.NE : return (n1 != n2) ;
}
return false;
}
internal override XPathNavigator advance()
{
XPathNavigator res1, res2;
XmlNodeOrder order = 0;
if (advance1)
{
res1 = qy1.advance();
}
else
{
res1 = _last;
}
if (advance2)
{
res2 = qy2.advance();
}
else
{
res2 = _last;
}
if (res1 != null && res2 != null)
{
order = res1.ComparePosition(res2);
}
else if (res2 == null)
{
advance1 = true;
advance2 = false;
m_eNext = res1;
_last = null;
return(res1);
}
else
{
advance1 = false;
advance2 = true;
m_eNext = res2;
_last = null;
return(res2);
}
if (order == XmlNodeOrder.Same)
{
return(ProcessSamePosition(res1));
}
if (order == XmlNodeOrder.Before)
{
return(ProcessBeforePosition(res1, res2));
}
if (order == XmlNodeOrder.After)
{
return(ProcessAfterPosition(res1, res2));
}
//Now order is XmlNodeOrder.Unknown
XPathNavigator dummyres1 = res1.Clone();
dummyres1.MoveToRoot();
XPathNavigator dummyres2 = res2.Clone();
dummyres2.MoveToRoot();
int uriOrder = context.CompareDocument(dummyres1.BaseURI, dummyres2.BaseURI);
if (uriOrder == 0)
{
return(ProcessSamePosition(res1));
}
if (uriOrder < 0)
{
return(ProcessBeforePosition(res1, res2));
}
if (uriOrder > 0)
{
return(ProcessAfterPosition(res1, res2));
}
Debug.Assert(false, "should not be herein OrQuery.advance()");
return(null);
}
static bool compareQueryQuery1(
IQuery opnd1,
IQuery opnd2,
IQuery qyContext,
Operator.Op op) {
XPathNavigator val1, val2;
String str1,str2;
opnd1.setContext(qyContext.peekElement().Clone());
opnd2.setContext(qyContext.peekElement().Clone());
while (true) {
val1 = opnd1.advance();
if (val1 != null)
str1 = val1.Value;
else
return false;
val2 = opnd2.advance();
if (val2 != null)
str2 = val2.Value;
else
return false;
while (true) {
switch (op) {
case Operator.Op.EQ :
if (str1 == str2)
return true;
break;
case Operator.Op.NE :
if (str1 != str2)
return true;
break;
}
val2 = opnd2.advance();
if (val2 != null)
str2 = val2.Value;
else {
opnd2.reset();
break;
}
}
}
}
