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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.ElementCreator | +--net.sf.saxon.instruct.Element
An instruction representing xsl:element element in the stylesheet.
Field Summary |
Fields inherited from class net.sf.saxon.instruct.ElementCreator |
inheritNamespaces, schemaType, useAttributeSets, validation |
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 | |
Element(Expression elementName,
Expression namespace,
NamespaceResolver nsContext,
AttributeSet[] useAttributeSets,
SchemaType schemaType,
int validation)
Create an instruction that creates a new element node |
Method Summary | |
Expression |
analyze(StaticContext env,
ItemType contextItemType)
Perform static analysis of an expression and its subexpressions. |
void |
display(int level,
NamePool pool,
java.io.PrintStream out)
Display this instruction as an expression, for diagnostics |
int |
getInstructionNameCode()
Get the name of this instruction for diagnostic and tracing purposes |
protected int |
getNameCode(XPathContext context)
Callback from the superclass ElementCreator to get the nameCode for the element name |
java.util.Iterator |
iterateSubExpressions()
Get the immediate sub-expressions of this expression. |
protected void |
outputNamespaceNodes(XPathContext context,
Receiver out)
Callback to output namespace nodes for the new element. |
protected void |
promoteInst(PromotionOffer offer)
Offer promotion for subexpressions. |
Expression |
simplify(StaticContext env)
Simplify an expression. |
Methods inherited from class net.sf.saxon.instruct.ElementCreator |
evaluateItem, getCardinality, getItemType, getValidationMode, processLeavingTail, setValidationMode |
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, iterate, 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 Element(Expression elementName, Expression namespace, NamespaceResolver nsContext, AttributeSet[] useAttributeSets, SchemaType schemaType, int validation)
elementName
- Expression that evaluates to produce the name of the
element node as a lexical QNamenamespace
- Expression that evaluates to produce the namespace URI of
the element node. Set to null if the namespace is to be deduced from the prefix
of the elementName.nsContext
- Saved copy of the static namespace context for the instruction.
Can be set to null if namespace is supplied.useAttributeSets
- Array of attribute sets to be expandedschemaType
- The required schema type for the contentMethod Detail |
public Expression simplify(StaticContext env) throws XPathException
InstructionWithChildren
simplify
in interface Expression
simplify
in class InstructionWithChildren
XPathException
- if an error is discovered during expression
rewritingpublic Expression analyze(StaticContext env, ItemType contextItemType) throws XPathException
InstructionWithChildren
This checks statically that the operands of the expression have the correct type; if necessary it generates code to do run-time type checking or type conversion. A static type error is reported only if execution cannot possibly succeed, that is, if a run-time type error is inevitable. The call may return a modified form of the expression.
This method is called after all references to functions and variables have been resolved to the declaration of the function or variable. However, the types of such functions and variables will only be accurately known if they have been explicitly declared.
analyze
in interface Expression
analyze
in class InstructionWithChildren
env
- the static context of the expression
XPathException
- if an error is discovered during this phase
(typically a type error)public java.util.Iterator iterateSubExpressions()
InstructionWithChildren
iterateSubExpressions
in interface Expression
iterateSubExpressions
in class InstructionWithChildren
protected void promoteInst(PromotionOffer offer) throws XPathException
promoteInst
in class InstructionWithChildren
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 detectedprotected int getNameCode(XPathContext context) throws XPathException, XPathException
getNameCode
in class ElementCreator
context
- The evaluation context (not used)
XPathException
protected void outputNamespaceNodes(XPathContext context, Receiver out) throws XPathException
outputNamespaceNodes
in class ElementCreator
context
- The execution contextout
- the Receiver where the namespace nodes are to be written
XPathException
public int getInstructionNameCode()
getInstructionNameCode
in class Instruction
public void display(int level, NamePool pool, java.io.PrintStream out)
level
- indentation level for this expressionpool
- NamePool used to expand any names appearing in the expressionout
- Output destination
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