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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.SimpleNodeConstructor

All known Subclasses:   net.sf.saxon.instruct.Attribute,  net.sf.saxon.instruct.Namespace,  net.sf.saxon.instruct.ValueOf,  net.sf.saxon.instruct.ProcessingInstruction,  net.sf.saxon.instruct.FixedAttribute,  net.sf.saxon.instruct.Comment,
SimpleNodeConstructor
abstract public class SimpleNodeConstructor extends Instruction (Code)
Common superclass for XSLT instructions whose content template produces a text value: xsl:attribute, xsl:comment, xsl:processing-instruction, xsl:namespace, and xsl:text


Field Summary
protected  Expressionselect
    

Constructor Summary
public  SimpleNodeConstructor()
    

Method Summary
protected  StringcheckContent(String data, XPathContext context)
     Check the content of the node, and adjust it if necessary.
public  intcomputeSpecialProperties()
     Get the static properties of this expression (other than its type).
final public  booleancreatesNewNodes()
     Determine whether this instruction creates new nodes.
public  voiddisplay(int level, NamePool pool, PrintStream out)
    
public  ItemevaluateItem(XPathContext context)
     Evaluate as an expression.
protected  intevaluateNameCode(XPathContext context)
    
public  CharSequenceexpandChildren(XPathContext context)
     Expand the stylesheet elements subordinate to this one, returning the result as a string.
public  ExpressiongetSelect()
    
public  SequenceIteratoriterate(XPathContext context)
    
public  IteratoriterateSubExpressions()
    
abstract public  voidlocalTypeCheck(StaticContext env, ItemType contextItemType)
    
public  Expressionoptimize(Optimizer opt, StaticContext env, ItemType contextItemType)
    
protected  voidpromoteInst(PromotionOffer offer)
     Offer promotion for subexpressions.
public  voidsetSelect(Expression select)
    
public  Expressionsimplify(StaticContext env)
    
public  ExpressiontypeCheck(StaticContext env, ItemType contextItemType)
     The analyze() method is called in XQuery, where node constructors are implemented as Expressions.

Field Detail
select
protected Expression select(Code)




Constructor Detail
SimpleNodeConstructor
public SimpleNodeConstructor()(Code)




Method Detail
checkContent
protected String checkContent(String data, XPathContext context) throws DynamicError(Code)
Check the content of the node, and adjust it if necessary. The checks depend on the node kind.
Parameters:
  data - the supplied content
Parameters:
  context - the dynamic context the original content, unless adjustments are needed
throws:
  DynamicError - if the content is invalid



computeSpecialProperties
public int computeSpecialProperties()(Code)
Get the static properties of this expression (other than its type). The result is bit-signficant. These properties are used for optimizations. In general, if property bit is set, it is true, but if it is unset, the value is unknown. a set of flags indicating static properties of this expression



createsNewNodes
final public boolean createsNewNodes()(Code)
Determine whether this instruction creates new nodes. This implementation returns true.



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



evaluateItem
public Item evaluateItem(XPathContext context) throws XPathException(Code)
Evaluate as an expression. We rely on the fact that when these instructions are generated by XQuery, there will always be a valueExpression to evaluate the content



evaluateNameCode
protected int evaluateNameCode(XPathContext context) throws XPathException, XPathException(Code)



expandChildren
public CharSequence expandChildren(XPathContext context) throws XPathException(Code)
Expand the stylesheet elements subordinate to this one, returning the result as a string. The expansion must not generate any element or attribute nodes.
Parameters:
  context - The dynamic context for the transformation



getSelect
public Expression getSelect()(Code)



iterate
public SequenceIterator iterate(XPathContext context) throws XPathException(Code)



iterateSubExpressions
public Iterator iterateSubExpressions()(Code)



localTypeCheck
abstract public void localTypeCheck(StaticContext env, ItemType contextItemType) throws XPathException(Code)



optimize
public Expression optimize(Optimizer opt, StaticContext env, ItemType contextItemType) throws XPathException(Code)



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
exception:
  XPathException - if any error is detected



setSelect
public void setSelect(Expression select) throws StaticError(Code)



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



typeCheck
public Expression typeCheck(StaticContext env, ItemType contextItemType) throws XPathException(Code)
The analyze() method is called in XQuery, where node constructors are implemented as Expressions. In this case the required type for the select expression is a single string.
Parameters:
  env - The static context for the query the rewritten expression
throws:
  XPathException - if any static errors are found in this expressionor any of its children



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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