public final class ValueOf extends SimpleNodeConstructor
select
locationId, staticProperties
EVALUATE_METHOD, ITERATE_METHOD, PROCESS_METHOD
Constructor and Description |
---|
ValueOf(Expression select,
boolean disable,
boolean noNodeIfEmpty) |
Modifier and Type | Method and Description |
---|---|
void |
checkPermittedContents(SchemaType parentType,
StaticContext env,
boolean whole)
Check statically that the results of the expression are capable of constructing the content
of a given schema type.
|
int |
computeCardinality()
Get the cardinality of the sequence returned by evaluating this instruction
|
void |
display(int level,
NamePool pool,
PrintStream out)
Display this instruction as an expression, for diagnostics
|
Item |
evaluateItem(XPathContext context)
Evaluate as an expression.
|
int |
getInstructionNameCode()
Get the name of this instruction for diagnostic and tracing purposes
|
ItemType |
getItemType(TypeHierarchy th)
Get the item type of the items returned by evaluating this instruction
|
void |
localTypeCheck(StaticContext env,
ItemType contextItemType) |
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
|
checkContent, computeSpecialProperties, createsNewNodes, evaluateNameCode, expandChildren, getSelect, iterate, iterateSubExpressions, optimize, setSelect, simplify, typeCheck
appendItem, assembleParams, assembleTunnelParams, dynamicError, evaluateAsString, getImplementationMethod, getInstructionInfo, getSourceLocator, isXSLT, process, promote
adoptChildExpression, computeDependencies, computeStaticProperties, doPromotion, dynamicError, dynamicError, effectiveBooleanValue, getCardinality, getColumnNumber, getConstructType, getDependencies, getExecutable, getHostLanguage, getIntrinsicDependencies, getLineNumber, getLocationId, getLocationProvider, getParentExpression, getPublicId, getSlotsUsed, getSpecialProperties, getSystemId, hasBadParentPointer, markTailFunctionCalls, resetStaticProperties, setLocationId, setParentExpression, suppressValidation, typeError, typeError
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
getColumnNumber, getLineNumber, getPublicId, getSystemId
public ValueOf(Expression select, boolean disable, boolean noNodeIfEmpty)
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 expressionXPathException
- if any error is detectedpublic ItemType getItemType(TypeHierarchy th)
Instruction
getItemType
in interface Expression
getItemType
in class Instruction
public int computeCardinality()
Instruction
computeCardinality
in class Instruction
public void localTypeCheck(StaticContext env, ItemType contextItemType)
localTypeCheck
in class SimpleNodeConstructor
public void checkPermittedContents(SchemaType parentType, StaticContext env, boolean whole) throws XPathException
checkPermittedContents
in interface Expression
checkPermittedContents
in class ComputedExpression
parentType
- The schema typeenv
- the static contextwhole
- XPathException
- if the expression doesn't match the required content typepublic TailCall processLeavingTail(XPathContext context) throws XPathException
Instruction
processLeavingTail
in interface TailCallReturner
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 evaluatedXPathException
- if any dynamic error occurs evaluating the
expressionpublic void display(int level, NamePool pool, 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