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Java Source Code / Java Documentation » XML » saxonb » net.sf.saxon.instruct 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   net.sf.saxon.expr.ComputedExpression
      net.sf.saxon.instruct.Instruction
         net.sf.saxon.instruct.ParentNodeConstructor
            net.sf.saxon.instruct.ElementCreator
               net.sf.saxon.instruct.ComputedElement

ComputedElement
public class ComputedElement extends ElementCreator (Code)
An instruction representing an xsl:element element in an XSLT stylesheet, or a computed element constructor in XQuery. (In both cases, if the element name is expressed as a compile-time expression, then a FixedElement instruction is used instead.)
See Also:   FixedElement



Constructor Summary
public  ComputedElement(Expression elementName, Expression namespace, NamespaceResolver nsContext, SchemaType schemaType, int validation, boolean inheritNamespaces, boolean allowQName)
     Create an instruction that creates a new element node
Parameters:
  elementName - Expression that evaluates to produce the name of theelement node as a lexical QName
Parameters:
  namespace - Expression that evaluates to produce the namespace URI ofthe element node.

Method Summary
public  voidcheckPermittedContents(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.
public  voiddisplay(int level, NamePool pool, PrintStream out)
    
public  intgetInstructionNameCode()
    
public  ItemTypegetItemType(TypeHierarchy th)
    
public  intgetNameCode(XPathContext context)
    
public  IteratoriterateSubExpressions()
    
protected  voidoutputNamespaceNodes(XPathContext context, Receiver out)
     Callback to output namespace nodes for the new element.
protected  voidpromoteInst(PromotionOffer offer)
     Offer promotion for subexpressions.
public  Expressionsimplify(StaticContext env)
    
public  ExpressiontypeCheck(StaticContext env, ItemType contextItemType)
    


Constructor Detail
ComputedElement
public ComputedElement(Expression elementName, Expression namespace, NamespaceResolver nsContext, SchemaType schemaType, int validation, boolean inheritNamespaces, boolean allowQName)(Code)
Create an instruction that creates a new element node
Parameters:
  elementName - Expression that evaluates to produce the name of theelement node as a lexical QName
Parameters:
  namespace - Expression that evaluates to produce the namespace URI ofthe element node. Set to null if the namespace is to be deduced from the prefixof the elementName.
Parameters:
  nsContext - Saved copy of the static namespace context for the instruction.Can be set to null if namespace is supplied.
Parameters:
  schemaType - The required schema type for the content
Parameters:
  allowQName -




Method Detail
checkPermittedContents
public void checkPermittedContents(SchemaType parentType, StaticContext env, boolean whole) throws XPathException(Code)
Check that any elements and attributes constructed or returned by this expression are acceptable in the content model of a given complex type. It's always OK to say yes, since the check will be repeated at run-time. The process of checking element and attribute constructors against the content model of a complex type also registers the type of content expected of those constructors, so the static validation can continue recursively.



display
public void display(int level, NamePool pool, PrintStream out)(Code)
Display this instruction as an expression, for diagnostics



getInstructionNameCode
public int getInstructionNameCode()(Code)
Get the name of this instruction for diagnostic and tracing purposes



getItemType
public ItemType getItemType(TypeHierarchy th)(Code)
Get the item type of the value returned by this instruction the item type
Parameters:
  th -



getNameCode
public int getNameCode(XPathContext context) throws XPathException, XPathException(Code)
Callback from the superclass ElementCreator to get the nameCode for the element name
Parameters:
  context - The evaluation context (not used) the name code for the element name



iterateSubExpressions
public Iterator iterateSubExpressions()(Code)



outputNamespaceNodes
protected void outputNamespaceNodes(XPathContext context, Receiver out) throws XPathException(Code)
Callback to output namespace nodes for the new element.
Parameters:
  context - The execution context
Parameters:
  out - the Receiver where the namespace nodes are to be written
throws:
  XPathException -



promoteInst
protected void promoteInst(PromotionOffer offer) throws XPathException(Code)
Offer promotion for subexpressions. The offer will be accepted if the subexpression is not dependent on the factors (e.g. the context item) identified in the PromotionOffer. By default the offer is not accepted - this is appropriate in the case of simple expressions such as constant values and variable references where promotion would give no performance advantage. This method is always called at compile time.
Parameters:
  offer - details of the offer, for example the offer to moveexpressions that don't depend on the context to an outer level inthe containing expression
throws:
  net.sf.saxon.trans.XPathException - if any error is detected



simplify
public Expression simplify(StaticContext env) throws XPathException(Code)



typeCheck
public Expression typeCheck(StaticContext env, ItemType contextItemType) throws XPathException(Code)



Fields inherited from net.sf.saxon.instruct.ElementCreator
protected boolean inheritNamespaces(Code)(Java Doc)

Methods inherited from net.sf.saxon.instruct.ElementCreator
public int computeSpecialProperties()(Code)(Java Doc)
public Item evaluateItem(XPathContext context) throws XPathException(Code)(Java Doc)
public int[] getActiveNamespaces() throws XPathException(Code)(Java Doc)
public int getImplementationMethod()(Code)(Java Doc)
public ItemType getItemType(TypeHierarchy th)(Code)(Java Doc)
abstract public int getNameCode(XPathContext context) throws XPathException(Code)(Java Doc)
public int getValidationMode()(Code)(Java Doc)
abstract protected void outputNamespaceNodes(XPathContext context, Receiver receiver) throws XPathException(Code)(Java Doc)
public TailCall processLeavingTail(XPathContext context) throws XPathException(Code)(Java Doc)
public void setValidationMode(int mode)(Code)(Java Doc)
public void suppressValidation(int validationMode)(Code)(Java Doc)

Fields inherited from net.sf.saxon.instruct.ParentNodeConstructor
protected Expression content(Code)(Java Doc)
int validation(Code)(Java Doc)

Methods inherited from net.sf.saxon.instruct.ParentNodeConstructor
final public boolean createsNewNodes()(Code)(Java Doc)
public int getCardinality()(Code)(Java Doc)
public Expression getContentExpression()(Code)(Java Doc)
public SchemaType getSchemaType()(Code)(Java Doc)
public int getValidationAction()(Code)(Java Doc)
final public boolean isLazyConstruction()(Code)(Java Doc)
public boolean isNamespaceSensitive()(Code)(Java Doc)
public Iterator iterateSubExpressions()(Code)(Java Doc)
public Expression optimize(Optimizer opt, StaticContext env, ItemType contextItemType) throws XPathException(Code)(Java Doc)
protected void promoteInst(PromotionOffer offer) throws XPathException(Code)(Java Doc)
public void setContentExpression(Expression content)(Code)(Java Doc)
public void setLazyConstruction(boolean lazy)(Code)(Java Doc)
public void setSchemaType(SchemaType type)(Code)(Java Doc)
public Expression simplify(StaticContext env) throws XPathException(Code)(Java Doc)
public Expression typeCheck(StaticContext env, ItemType contextItemType) throws XPathException(Code)(Java Doc)
void verifyLazyConstruction()(Code)(Java Doc)

Methods inherited from net.sf.saxon.instruct.Instruction
public static void appendItem(Item it, SequenceReceiver out, int locationId) throws XPathException(Code)(Java Doc)
protected static ParameterSet assembleParams(XPathContext context, WithParam[] actualParams) throws XPathException(Code)(Java Doc)
protected static ParameterSet assembleTunnelParams(XPathContext context, WithParam[] actualParams) throws XPathException(Code)(Java Doc)
public int computeCardinality()(Code)(Java Doc)
public int computeSpecialProperties()(Code)(Java Doc)
public boolean createsNewNodes()(Code)(Java Doc)
protected static XPathException dynamicError(SourceLocator loc, XPathException error, XPathContext context)(Code)(Java Doc)
final public String evaluateAsString(XPathContext context) throws XPathException(Code)(Java Doc)
public Item evaluateItem(XPathContext context) throws XPathException(Code)(Java Doc)
public int getImplementationMethod()(Code)(Java Doc)
public InstructionInfo getInstructionInfo()(Code)(Java Doc)
public int getInstructionNameCode()(Code)(Java Doc)
public ItemType getItemType(TypeHierarchy th)(Code)(Java Doc)
public SourceLocator getSourceLocator()(Code)(Java Doc)
public boolean isXSLT(XPathContext context)(Code)(Java Doc)
public SequenceIterator iterate(XPathContext context) throws XPathException(Code)(Java Doc)
public void process(XPathContext context) throws XPathException(Code)(Java Doc)
abstract public TailCall processLeavingTail(XPathContext context) throws XPathException(Code)(Java Doc)
public Expression promote(PromotionOffer offer) throws XPathException(Code)(Java Doc)
protected void promoteInst(PromotionOffer offer) throws XPathException(Code)(Java Doc)
abstract public Expression simplify(StaticContext env) throws XPathException(Code)(Java Doc)

Fields inherited from net.sf.saxon.expr.ComputedExpression
protected int locationId(Code)(Java Doc)
protected int staticProperties(Code)(Java Doc)

Methods inherited from net.sf.saxon.expr.ComputedExpression
public void adoptChildExpression(Expression child)(Code)(Java Doc)
public void checkPermittedContents(SchemaType parentType, StaticContext env, boolean whole) throws XPathException(Code)(Java Doc)
abstract protected int computeCardinality()(Code)(Java Doc)
public int computeDependencies()(Code)(Java Doc)
public int computeSpecialProperties()(Code)(Java Doc)
final public void computeStaticProperties()(Code)(Java Doc)
final public Expression doPromotion(Expression subexpression, PromotionOffer offer) throws XPathException(Code)(Java Doc)
protected void dynamicError(String message, XPathContext context) throws DynamicError(Code)(Java Doc)
protected void dynamicError(String message, String code, XPathContext context) throws DynamicError(Code)(Java Doc)
public boolean effectiveBooleanValue(XPathContext context) throws XPathException(Code)(Java Doc)
public String evaluateAsString(XPathContext context) throws XPathException(Code)(Java Doc)
public Item evaluateItem(XPathContext context) throws XPathException(Code)(Java Doc)
public int getCardinality()(Code)(Java Doc)
public int getColumnNumber()(Code)(Java Doc)
protected int getConstructType()(Code)(Java Doc)
public int getDependencies()(Code)(Java Doc)
public Executable getExecutable()(Code)(Java Doc)
public int getImplementationMethod()(Code)(Java Doc)
public InstructionInfo getInstructionInfo()(Code)(Java Doc)
public int getIntrinsicDependencies()(Code)(Java Doc)
public int getLineNumber()(Code)(Java Doc)
final public int getLocationId()(Code)(Java Doc)
public LocationProvider getLocationProvider()(Code)(Java Doc)
public Container getParentExpression()(Code)(Java Doc)
final public String getPublicId()(Code)(Java Doc)
public int[] getSlotsUsed()(Code)(Java Doc)
final public int getSpecialProperties()(Code)(Java Doc)
public String getSystemId()(Code)(Java Doc)
public boolean hasBadParentPointer()(Code)(Java Doc)
public SequenceIterator iterate(XPathContext context) throws XPathException(Code)(Java Doc)
public Iterator iterateSubExpressions()(Code)(Java Doc)
public boolean markTailFunctionCalls()(Code)(Java Doc)
public void process(XPathContext context) throws XPathException(Code)(Java Doc)
public Expression promote(PromotionOffer offer) throws XPathException(Code)(Java Doc)
final public void resetStaticProperties()(Code)(Java Doc)
public void setLocationId(int id)(Code)(Java Doc)
public void setParentExpression(Container parent)(Code)(Java Doc)
public Expression simplify(StaticContext env) throws XPathException(Code)(Java Doc)
public void suppressValidation(int validationMode)(Code)(Java Doc)
protected void typeError(String message, XPathContext context) throws DynamicError(Code)(Java Doc)
protected void typeError(String message, String errorCode, XPathContext context) throws DynamicError(Code)(Java Doc)

Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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