public class Variable extends Expression implements PathComponent
| Constructor and Description |
|---|
Variable() |
| Modifier and Type | Method and Description |
|---|---|
void |
callVisitors(ExpressionOwner owner,
XPathVisitor visitor)
This will traverse the heararchy, calling the visitor for
each member.
|
boolean |
deepEquals(Expression expr)
Compare this object with another object and see
if they are equal, include the sub heararchy.
|
XObject |
execute(XPathContext xctxt)
Execute an expression in the XPath runtime context, and return the
result of the expression.
|
XObject |
execute(XPathContext xctxt,
boolean destructiveOK)
Dereference the variable, and return the reference value.
|
void |
fixupVariables(java.util.Vector vars,
int globalsSize)
This function is used to fixup variables from QNames to stack frame
indexes at stylesheet build time.
|
int |
getAnalysisBits()
Get the analysis bits for this walker, as defined in the WalkerFactory.
|
ElemVariable |
getElemVariable()
Get the XSLT ElemVariable that this sub-expression references.
|
boolean |
getGlobal()
Set the index for the variable into the stack.
|
int |
getIndex()
Set the index for the variable into the stack.
|
QName |
getQName()
Get the qualified name of the variable.
|
boolean |
isPsuedoVarRef()
Tell if this is a psuedo variable reference, declared by Xalan instead
of by the user.
|
boolean |
isStableNumber()
Tell if this expression returns a stable number that will not change during
iterations within the expression.
|
void |
setIndex(int index)
Set the index for the variable into the stack.
|
void |
setIsGlobal(boolean isGlobal)
Set whether or not this is a global reference.
|
void |
setQName(QName qname)
Set the qualified name of the variable.
|
asIterator, asIteratorRaw, asNode, assertion, bool, canTraverseOutsideSubtree, error, execute, execute, executeCharsToContentHandler, exprAddChild, exprGetChild, exprGetNumChildren, exprGetParent, exprSetParent, getColumnNumber, getExpressionOwner, getLineNumber, getPublicId, getSystemId, isNodesetExpr, num, warn, xstrpublic void setIndex(int index)
index - a global or local index.public int getIndex()
public void setIsGlobal(boolean isGlobal)
isGlobal - true if this should be a global variable reference.public boolean getGlobal()
public void fixupVariables(java.util.Vector vars,
int globalsSize)
fixupVariables in class Expressionvars - List of QNames that correspond to variables. This list
should be searched backwards for the first qualified name that
corresponds to the variable reference qname. The position of the
QName in the vector from the start of the vector will be its position
in the stack frame (but variables above the globalsTop value will need
to be offset to the current stack frame).public void setQName(QName qname)
qname - Must be a non-null reference to a qualified name.public QName getQName()
public XObject execute(XPathContext xctxt) throws TransformerException
execute in class Expressionxctxt - The XPath runtime context.XObject.TransformerException - if a runtime exception
occurs.public XObject execute(XPathContext xctxt, boolean destructiveOK) throws TransformerException
execute in class Expressionxctxt - The runtime execution context.destructiveOK - true if a "safe" object doesn't need to be returned.TransformerExceptionpublic ElemVariable getElemVariable()
public boolean isStableNumber()
isStableNumber in class Expressionpublic int getAnalysisBits()
getAnalysisBits in interface PathComponentpublic void callVisitors(ExpressionOwner owner, XPathVisitor visitor)
XPathVisitablecallVisitors in interface XPathVisitableowner - The owner of the visitor, where that path may be
rewritten if needed.visitor - The visitor whose appropriate method will be called.XPathVisitable.callVisitors(ExpressionOwner, XPathVisitor)public boolean deepEquals(Expression expr)
ExpressiondeepEquals in class Expressionexpr - Another expression object.Expression.deepEquals(Expression)public boolean isPsuedoVarRef()
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