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java.lang.Objectnet.sf.saxon.expr.ComputedExpression
net.sf.saxon.instruct.Instruction
net.sf.saxon.instruct.ElementCreator
net.sf.saxon.instruct.FixedElement
An instruction that creates an element node whose name is known statically. Used for literal results elements in XSLT, for direct element constructors in XQuery, and for xsl:element in cases where the name and namespace are known statically.
Field Summary | |
protected int[] |
namespaceCodes
|
Fields inherited from class net.sf.saxon.instruct.ElementCreator |
content, inheritNamespaces, schemaType, useAttributeSets, validation |
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 | |
FixedElement(int nameCode,
int[] namespaceCodes,
AttributeSet[] useAttributeSets,
boolean inheritNamespaces,
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 |
checkPermittedContents(SchemaType parentType,
StaticContext env,
boolean whole)
Check that any elements and attributes constructed or returned by this expression are acceptable in the content model of a given complex type. |
void |
display(int level,
NamePool pool,
java.io.PrintStream out)
Display this instruction as an expression, for diagnostics |
InstructionInfo |
getInstructionInfo()
Get InstructionInfo for this expression |
ItemType |
getItemType()
Get the type of the item returned by this instruction |
protected int |
getNameCode(XPathContext context)
Callback from the superclass ElementCreator to get the nameCode for the element name |
protected void |
outputNamespaceNodes(XPathContext context,
Receiver out)
Callback from the superclass ElementCreator to output the namespace nodes |
Expression |
simplify(StaticContext env)
Simplify an expression. |
Methods inherited from class net.sf.saxon.instruct.ElementCreator |
computeSpecialProperties, createsNewNodes, evaluateItem, getCardinality, getImplementationMethod, getValidationMode, iterateSubExpressions, processLeavingTail, promoteInst, setContent, setValidationMode |
Methods inherited from class net.sf.saxon.instruct.Instruction |
appendItem, assembleParams, assembleTunnelParams, computeCardinality, dynamicError, dynamicError, effectiveBooleanValue, evaluateAsString, getInstructionNameCode, getSourceLocator, isXSLT, 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 |
Field Detail |
protected int[] namespaceCodes
Constructor Detail |
public FixedElement(int nameCode, int[] namespaceCodes, AttributeSet[] useAttributeSets, boolean inheritNamespaces, SchemaType schemaType, int validation)
nameCode
- Represents the name of the element nodenamespaceCodes
- List of namespaces to be added to the element node.
May be null if none are required.useAttributeSets
- Array of attribute sets to be expanded. May be null
if none are required.inheritNamespaces
- true if the children of this element are to inherit its namespacesschemaType
- Type annotation for the new element nodeMethod Detail |
public InstructionInfo getInstructionInfo()
ComputedExpression
getInstructionInfo
in interface InstructionInfoProvider
getInstructionInfo
in class Instruction
public Expression simplify(StaticContext env) throws XPathException
simplify
in interface Expression
simplify
in class ElementCreator
XPathException
- if an error is discovered during expression rewritingpublic Expression analyze(StaticContext env, ItemType contextItemType) throws XPathException
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 ElementCreator
env
- the static context of the expression
XPathException
- if an error is discovered during this phase
(typically a type error)public ItemType getItemType()
getItemType
in interface Expression
getItemType
in class ElementCreator
protected int getNameCode(XPathContext context)
getNameCode
in class ElementCreator
context
- The evaluation context (not used)
public void checkPermittedContents(SchemaType parentType, StaticContext env, boolean whole) throws XPathException
checkPermittedContents
in interface Expression
checkPermittedContents
in class ComputedExpression
XPathException
protected void outputNamespaceNodes(XPathContext context, Receiver out) throws XPathException
outputNamespaceNodes
in class ElementCreator
context
- The evaluation context (not used)out
- The receiver to handle the output
XPathException
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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