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java.lang.Object | +--net.sf.saxon.expr.ComputedExpression | +--net.sf.saxon.instruct.Instruction | +--net.sf.saxon.instruct.InstructionWithChildren | +--net.sf.saxon.instruct.SimpleNodeConstructor | +--net.sf.saxon.instruct.ValueOf
An xsl:value-of element in the stylesheet.
The xsl:value-of element takes attributes:
Field Summary |
Fields inherited from class net.sf.saxon.instruct.SimpleNodeConstructor |
select, separator |
Fields inherited from class net.sf.saxon.instruct.InstructionWithChildren |
children |
Fields inherited from class net.sf.saxon.expr.ComputedExpression |
locationId, staticProperties |
Fields inherited from interface net.sf.saxon.expr.Expression |
EVALUATE_METHOD, ITERATE_METHOD, PROCESS_METHOD |
Constructor Summary | |
ValueOf(Expression select,
boolean disable)
|
Method Summary | |
void |
display(int level,
NamePool pool,
java.io.PrintStream out)
Display this instruction as an expression, for diagnostics |
Item |
evaluateItem(XPathContext context)
Evaluate as an expression. |
int |
getCardinality()
Determine the static cardinality of the expression. |
int |
getInstructionNameCode()
Get the name of this instruction for diagnostic and tracing purposes |
ItemType |
getItemType()
Get the item type of the items returned by evaluating this instruction |
TailCall |
processLeavingTail(XPathContext context)
ProcessLeavingTail: called to do the real work of this instruction. |
protected void |
promoteInst(PromotionOffer offer)
Offer promotion for subexpressions. |
void |
setIsNumberingInstruction()
Indicate that this is really an xsl:nunber instruction |
void |
typeCheck(StaticContext env,
ItemType contextItemType)
|
Methods inherited from class net.sf.saxon.instruct.SimpleNodeConstructor |
analyze, checkContent, evaluateNameCode, expandChildren, iterate, iterateSubExpressions, setSelect, setSeparator, simplify |
Methods inherited from class net.sf.saxon.instruct.InstructionWithChildren |
displayChildren, getChildren, processChildren, processChildrenLeavingTail, setChildren |
Methods inherited from class net.sf.saxon.instruct.Instruction |
appendItem, assembleParams, assembleTunnelParams, computeCardinality, computeSpecialProperties, dynamicError, dynamicError, effectiveBooleanValue, evaluateAsString, getImplementationMethod, getInstructionInfo, getSourceLocator, process, promote |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface javax.xml.transform.SourceLocator |
getColumnNumber, getLineNumber, getPublicId, getSystemId |
Constructor Detail |
public ValueOf(Expression select, boolean disable)
Method Detail |
public void setIsNumberingInstruction()
public int getInstructionNameCode()
getInstructionNameCode
in class Instruction
protected void promoteInst(PromotionOffer offer) throws XPathException
promoteInst
in class SimpleNodeConstructor
offer
- details of the offer, for example the offer to move
expressions that don't depend on the context to an outer level in
the containing expression
XPathException
- if any error is detectedpublic ItemType getItemType()
Instruction
getItemType
in interface Expression
getItemType
in class Instruction
public int getCardinality()
ComputedExpression
getCardinality
in interface Expression
getCardinality
in class ComputedExpression
public void typeCheck(StaticContext env, ItemType contextItemType)
typeCheck
in class SimpleNodeConstructor
public TailCall processLeavingTail(XPathContext context) throws XPathException
Instruction
processLeavingTail
in class Instruction
context
- The dynamic context of the transformation, giving access to the current node,
the current variables, etc.
XPathException
public Item evaluateItem(XPathContext context) throws XPathException
SimpleNodeConstructor
evaluateItem
in interface Expression
evaluateItem
in class SimpleNodeConstructor
context
- The context in which the expression is to be evaluated
XPathException
- if any dynamic error occurs evaluating the
expressionpublic void display(int level, NamePool pool, java.io.PrintStream out)
display
in interface Expression
display
in class SimpleNodeConstructor
level
- indentation level for this expressionpool
- NamePool used to expand any names appearing in the expressionout
- Output destination
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