Java Doc for ElementCreator.java in  » XML » XPath-Saxon » net » sf » saxon » instruct » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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


net.sf.saxon.instruct.Instruction
   net.sf.saxon.instruct.ParentNodeConstructor
      net.sf.saxon.instruct.ElementCreator

All known Subclasses:   net.sf.saxon.instruct.FixedElement,  net.sf.saxon.instruct.Copy,  net.sf.saxon.instruct.ComputedElement,
ElementCreator
abstract public class ElementCreator extends ParentNodeConstructor (Code)
An instruction that creates an element node. There are two subtypes, FixedElement for use where the name is known statically, and Element where it is computed dynamically. To allow use in both XSLT and XQuery, the class acts both as an Instruction and as an Expression.


Field Summary
protected  booleaninheritNamespaces
     The inheritNamespaces flag indicates that the namespace nodes on the element created by this instruction are to be inherited (copied) on the children of this element.

Constructor Summary
public  ElementCreator()
    

Method Summary
public  intcomputeSpecialProperties()
     Get the static properties of this expression (other than its type).
public  ItemevaluateItem(XPathContext context)
     Evaluate the constructor, returning the constructed element node.
public  int[]getActiveNamespaces()
     Callback to get a list of the intrinsic namespaces that need to be generated for the element. The result is an array of namespace codes, the codes either occupy the whole array or are terminated by a -1 entry.
public  intgetImplementationMethod()
     An implementation of Expression must provide at least one of the methods evaluateItem(), iterate(), or process(). This method indicates which of these methods is prefered.
public  ItemTypegetItemType(TypeHierarchy th)
    
abstract public  intgetNameCode(XPathContext context)
    
public  intgetValidationMode()
    
abstract protected  voidoutputNamespaceNodes(XPathContext context, Receiver receiver)
     Callback to output namespace nodes for the new element.
public  TailCallprocessLeavingTail(XPathContext context)
     Evaluate the instruction to produce a new element node.
public  voidsetValidationMode(int mode)
    
public  voidsuppressValidation(int validationMode)
     Suppress validation on contained element constructors, on the grounds that the parent element is already performing validation.

Field Detail
inheritNamespaces
protected boolean inheritNamespaces(Code)
The inheritNamespaces flag indicates that the namespace nodes on the element created by this instruction are to be inherited (copied) on the children of this element. That is, if this flag is false, the child elements must carry a namespace undeclaration for all the namespaces on the parent, unless they are redeclared in some way.




Constructor Detail
ElementCreator
public ElementCreator()(Code)




Method Detail
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



evaluateItem
public Item evaluateItem(XPathContext context) throws XPathException(Code)
Evaluate the constructor, returning the constructed element node. If lazy construction mode is in effect, then an UnconstructedParent object is returned instead.



getActiveNamespaces
public int[] getActiveNamespaces() throws XPathException(Code)
Callback to get a list of the intrinsic namespaces that need to be generated for the element. The result is an array of namespace codes, the codes either occupy the whole array or are terminated by a -1 entry. A result of null is equivalent to a zero-length array.



getImplementationMethod
public int getImplementationMethod()(Code)
An implementation of Expression must provide at least one of the methods evaluateItem(), iterate(), or process(). This method indicates which of these methods is prefered. For instructions this is the process() method.



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



getNameCode
abstract public int getNameCode(XPathContext context) throws XPathException(Code)



getValidationMode
public int getValidationMode()(Code)
Get the validation mode for the constructed element



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



processLeavingTail
public TailCall processLeavingTail(XPathContext context) throws XPathException(Code)
Evaluate the instruction to produce a new element node. This method is typically used when there is a parent element or document in a result tree, to which the new element is added.
Parameters:
  context - null (this instruction never returns a tail call)
throws:
  XPathException -



setValidationMode
public void setValidationMode(int mode)(Code)
Set the validation mode for the new element



suppressValidation
public void suppressValidation(int validationMode)(Code)
Suppress validation on contained element constructors, on the grounds that the parent element is already performing validation. The default implementation does nothing.



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)

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