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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.FixedAttribute
An instruction derived from an xsl:attribute element in stylesheet, or from an attribute constructor in XQuery. This version deals only with attributes whose name is known at compile time. It is also used for attributes of literal result elements. The value of the attribute is in general computed at run-time.
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 | |
FixedAttribute(int nameCode,
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 |
Item |
evaluateItem(XPathContext context)
Evaluate as an expression. |
protected int |
evaluateNameCode(XPathContext context)
|
int |
getCardinality()
Determine the static cardinality of the expression. |
InstructionInfo |
getInstructionInfo()
Get InstructionInfo for this expression |
int |
getInstructionNameCode()
Get the name of this instruction (return 'xsl:attribute') |
ItemType |
getItemType()
Get the item type of the items returned by evaluating this instruction |
TailCall |
processLeavingTail(XPathContext context)
Process this instruction |
void |
setNoSpecialChars()
Indicate that the attribute value contains no special characters that might need escaping |
void |
setRejectDuplicates()
Indicate that two attributes with the same name are not acceptable. |
void |
setSelect(Expression select)
Set the expression defining the value of the attribute. |
void |
typeCheck(StaticContext env,
ItemType contextItemType)
|
Methods inherited from class net.sf.saxon.instruct.SimpleNodeConstructor |
analyze, checkContent, expandChildren, iterate, iterateSubExpressions, promoteInst, 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, 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 FixedAttribute(int nameCode, int validationAction, SimpleType schemaType, int annotation)
nameCode
- Represents the attribute nameannotation
- Integer code identifying the type named in the type
attribute
of the instruction - zero if the attribute was not presentMethod Detail |
public int getInstructionNameCode()
getInstructionNameCode
in class Instruction
public void setRejectDuplicates()
public void setNoSpecialChars()
public void setSelect(Expression select) throws StaticError
setSelect
in class SimpleNodeConstructor
select
- The expression defining the content of the attribute
StaticError
- if the expression is a constant, and validation is requested, and
the constant doesn't match the required type.public InstructionInfo getInstructionInfo()
ComputedExpression
getInstructionInfo
in interface InstructionInfoProvider
getInstructionInfo
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 void typeCheck(StaticContext env, ItemType contextItemType)
typeCheck
in class SimpleNodeConstructor
protected int evaluateNameCode(XPathContext context)
evaluateNameCode
in class SimpleNodeConstructor
public TailCall processLeavingTail(XPathContext context) throws XPathException
processLeavingTail
in class Instruction
context
- the dynamic context of the transformation
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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