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java.lang.Object net.sf.saxon.expr.Expression net.sf.saxon.expr.instruct.Instruction net.sf.saxon.expr.instruct.SimpleNodeConstructor net.sf.saxon.expr.instruct.NamespaceConstructor
public class NamespaceConstructor
A namespace constructor instruction. (xsl:namespace in XSLT 2.0, or namespace{}{} in XQuery 1.1)
Field Summary |
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Fields inherited from class net.sf.saxon.expr.instruct.SimpleNodeConstructor |
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select |
Fields inherited from class net.sf.saxon.expr.Expression |
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EFFECTIVE_BOOLEAN_VALUE, EVALUATE_METHOD, EVENT_FEED_METHOD, ITEM_FEED_METHOD, ITERATE_METHOD, locationId, MAX_SEQUENCE_LENGTH, MAX_STRING_LENGTH, PROCESS_METHOD, PUSH_SELECTION, staticProperties, UNBOUNDED_LOWER, UNBOUNDED_UPPER, WATCH_METHOD |
Constructor Summary | |
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NamespaceConstructor(Expression name)
Create an xsl:namespace instruction for dynamic construction of namespace nodes |
Method Summary | |
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Expression |
copy()
Copy an expression. |
NodeInfo |
evaluateItem(XPathContext context)
Evaluate as an expression. |
NodeName |
evaluateNodeName(XPathContext context)
Run-time method to compute the name of the node being constructed. |
void |
explain(ExpressionPresenter out)
Diagnostic print of expression structure. |
int |
getCardinality()
Determine the static cardinality of the expression. |
int |
getInstructionNameCode()
Set 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 |
Expression |
getNameExpression()
Get the expression that defines the namespace node's name |
Iterator<Expression> |
iterateSubExpressions()
Get the immediate sub-expressions of this expression. |
void |
localTypeCheck(ExpressionVisitor visitor,
ExpressionVisitor.ContextItemType contextItemType)
Method to perform type-checking specific to the kind of instruction |
void |
processValue(CharSequence value,
XPathContext context)
Process the value of the node, to create the new node. |
protected void |
promoteInst(PromotionOffer offer)
Offer promotion for subexpressions. |
boolean |
replaceSubExpression(Expression original,
Expression replacement)
Replace one subexpression by a replacement subexpression |
Expression |
simplify(ExpressionVisitor visitor)
Simplify an expression. |
Methods inherited from class net.sf.saxon.expr.instruct.SimpleNodeConstructor |
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checkContent, computeCardinality, computeSpecialProperties, createsNewNodes, getContentExpression, iterate, optimize, processLeavingTail, setSelect, typeCheck |
Methods inherited from class net.sf.saxon.expr.instruct.Instruction |
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assembleParams, assembleTunnelParams, dynamicError, evaluateAsString, getConstructType, getExpressionName, getImplementationMethod, getInstructionName, getIteratorFromProcessMethod, getSourceLocator, isXSLT, process, promote |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Methods inherited from interface javax.xml.transform.SourceLocator |
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getColumnNumber, getLineNumber, getPublicId, getSystemId |
Constructor Detail |
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public NamespaceConstructor(Expression name)
name
- the expression to evaluate the name of the node (that is, the prefix)Method Detail |
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public Expression getNameExpression()
public int getInstructionNameCode()
getInstructionNameCode
in class Instruction
public Expression simplify(ExpressionVisitor visitor) throws XPathException
Instruction
simplify
in class SimpleNodeConstructor
visitor
- an expression visitor
XPathException
- if an error is discovered during expression
rewritingpublic ItemType getItemType(TypeHierarchy th)
Instruction
getItemType
in class Instruction
th
- the type hierarchy cache
public int getCardinality()
Expression
getCardinality
in class Expression
protected void promoteInst(PromotionOffer offer) throws XPathException
SimpleNodeConstructor
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 void localTypeCheck(ExpressionVisitor visitor, ExpressionVisitor.ContextItemType contextItemType) throws XPathException
SimpleNodeConstructor
localTypeCheck
in class SimpleNodeConstructor
visitor
- an expression visitorcontextItemType
- the static type of the context item
XPathException
- if a type error is detectedpublic Iterator<Expression> iterateSubExpressions()
Expression
iterateSubExpressions
in class SimpleNodeConstructor
public Expression copy()
copy
in class Expression
public boolean replaceSubExpression(Expression original, Expression replacement)
replaceSubExpression
in class SimpleNodeConstructor
original
- the original subexpressionreplacement
- the replacement subexpression
public NodeName evaluateNodeName(XPathContext context) throws XPathException
SimpleNodeConstructor
evaluateNodeName
in class SimpleNodeConstructor
context
- the XPath dynamic evaluation context
XPathException
- if any failure occurspublic void processValue(CharSequence value, XPathContext context) throws XPathException
SimpleNodeConstructor
processValue
in class SimpleNodeConstructor
value
- the string value of the new nodecontext
- the dynamic evaluation context
XPathException
- if a dynamic error occurspublic NodeInfo evaluateItem(XPathContext context) throws XPathException
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 explain(ExpressionPresenter out)
explain
in class Expression
out
- the expression presenter used to display the structure
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