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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.Attribute
An instruction derived from an xsl:attribute element in stylesheet, or from an attribute constructor in XQuery
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 | |
Attribute(Expression attributeName,
Expression namespace,
NamespaceResolver nsContext,
int validationAction,
SimpleType schemaType,
int annotation)
Construct an Attribute instruction |
Method Summary | |
void |
display(int level,
NamePool pool,
java.io.PrintStream out)
Display this instruction as an expression, for diagnostics |
protected int |
evaluateNameCode(XPathContext context)
|
int |
getCardinality()
Determine the static cardinality of the expression. |
int |
getDependencies()
Determine which aspects of the context the expression depends on. |
int |
getInstructionNameCode()
Get the name of this instruction |
ItemType |
getItemType()
Get the item type of the items returned by evaluating this instruction |
java.util.Iterator |
iterateSubExpressions()
Get the immediate sub-expressions of this expression. |
TailCall |
processLeavingTail(XPathContext context)
Process this instruction |
protected void |
promoteInst(PromotionOffer offer)
Offer promotion for subexpressions. |
void |
setRejectDuplicates()
Indicate that two attributes with the same name are not acceptable. |
Expression |
simplify(StaticContext env)
Simplify an expression. |
void |
typeCheck(StaticContext env,
ItemType contextItemType)
|
Methods inherited from class net.sf.saxon.instruct.SimpleNodeConstructor |
analyze, checkContent, evaluateItem, expandChildren, iterate, setSelect, setSeparator |
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 net.sf.saxon.expr.ComputedExpression |
adoptChildExpression, computeDependencies, computeStaticProperties, dynamicError, dynamicError, getColumnNumber, getConstructType, getExecutable, getIntrinsicDependencies, getLineNumber, getLocationId, getParentExpression, getPublicId, getSpecialProperties, getSystemId, markTailFunctionCalls, resetStaticProperties, setLocationId, setParentExpression, typeError |
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 Attribute(Expression attributeName, Expression namespace, NamespaceResolver nsContext, int validationAction, SimpleType schemaType, int annotation)
attributeName
- An expression to calculate the attribute namenamespace
- An expression to calculate the attribute namespacensContext
- a NamespaceContext object containing the static namespace context of the
stylesheet instructionannotation
- Integer code identifying the type named in the type
attribute
of the instruction - zero if the attribute was not presentMethod Detail |
public void setRejectDuplicates()
public int getInstructionNameCode()
getInstructionNameCode
in class Instruction
public ItemType getItemType()
Instruction
getItemType
in interface Expression
getItemType
in class Instruction
public int getCardinality()
ComputedExpression
getCardinality
in interface Expression
getCardinality
in class ComputedExpression
public Expression simplify(StaticContext env) throws XPathException
InstructionWithChildren
simplify
in interface Expression
simplify
in class SimpleNodeConstructor
XPathException
- if an error is discovered during expression
rewritingpublic void typeCheck(StaticContext env, ItemType contextItemType) throws XPathException
typeCheck
in class SimpleNodeConstructor
XPathException
public int getDependencies()
ComputedExpression
getDependencies
in interface Expression
getDependencies
in class ComputedExpression
public java.util.Iterator iterateSubExpressions()
InstructionWithChildren
iterateSubExpressions
in interface Expression
iterateSubExpressions
in class SimpleNodeConstructor
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 TailCall processLeavingTail(XPathContext context) throws XPathException
processLeavingTail
in class Instruction
context
- the dynamic context of the transformation
XPathException
protected int evaluateNameCode(XPathContext context) throws XPathException, XPathException
evaluateNameCode
in class SimpleNodeConstructor
XPathException
public 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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