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java.lang.Object net.sf.saxon.expr.Expression net.sf.saxon.expr.instruct.Instruction net.sf.saxon.expr.instruct.ParentNodeConstructor net.sf.saxon.expr.instruct.ElementCreator net.sf.saxon.expr.instruct.FixedElement
public class 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 | |
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protected NamespaceBinding[] |
namespaceBindings
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Fields inherited from class net.sf.saxon.expr.instruct.ElementCreator |
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inheritNamespaces |
Fields inherited from class net.sf.saxon.expr.instruct.ParentNodeConstructor |
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content, preservingTypes |
Fields inherited from class net.sf.saxon.expr.Expression |
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EFFECTIVE_BOOLEAN_VALUE, EVALUATE_METHOD, EVENT_FEED_METHOD, ITEM_FEED_METHOD, ITERATE_METHOD, locationId, MAX_SEQUENCE_LENGTH, MAX_STRING_LENGTH, PROCESS_METHOD, PUSH_SELECTION, staticProperties, UNBOUNDED_LOWER, UNBOUNDED_UPPER, WATCH_METHOD |
Constructor Summary | |
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FixedElement(NodeName elementName,
NamespaceBinding[] namespaceBindings,
boolean inheritNamespaces,
SchemaType schemaType,
int validation)
Create an instruction that creates a new element node |
Method Summary | |
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protected void |
checkContentSequence(StaticContext env)
Check statically whether the content of the element creates attributes or namespaces after creating any child nodes |
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. |
Expression |
copy()
Copy an expression. |
void |
explain(ExpressionPresenter out)
Diagnostic print of expression structure. |
NamespaceBinding[] |
getActiveNamespaces()
Callback to get a list of the intrinsic namespaces that need to be generated for the element. |
NodeName |
getElementName()
|
NodeName |
getElementName(XPathContext context,
NodeInfo copiedNode)
Callback from the superclass ElementCreator to get the nameCode for the element name |
ItemType |
getItemType(TypeHierarchy th)
Get the type of the item returned by this instruction |
String |
getNewBaseURI(XPathContext context,
NodeInfo copiedNode)
Get the base URI for the element being constructed |
Expression |
optimize(ExpressionVisitor visitor,
ExpressionVisitor.ContextItemType contextItemType)
Perform optimisation of an expression and its subexpressions. |
protected void |
outputNamespaceNodes(XPathContext context,
Receiver out,
NodeName nameCode,
NodeInfo copiedNode)
Callback from the superclass ElementCreator to output the namespace nodes |
Expression |
simplify(ExpressionVisitor visitor)
Simplify an expression. |
Methods inherited from class net.sf.saxon.expr.instruct.ElementCreator |
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computeSpecialProperties, evaluateItem, getImplementationMethod, isInheritNamespaces, iterateEvents, iterateEvents, processLeavingTail, processLeavingTail, processLeft, processLeft, processRight, suppressValidation |
Methods inherited from class net.sf.saxon.expr.instruct.ParentNodeConstructor |
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addToPathMap, computeCardinality, createsNewNodes, getBaseURI, getCardinality, getContentExpression, getSchemaType, getValidationAction, isLazyConstruction, isNamespaceSensitive, isPreservingTypes, iterateSubExpressions, promoteInst, replaceSubExpression, setBaseURI, setContentExpression, setLazyConstruction, setNoNeedToStrip, setSchemaType, setValidationAction, typeCheck |
Methods inherited from class net.sf.saxon.expr.instruct.Instruction |
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assembleParams, assembleTunnelParams, dynamicError, evaluateAsString, getConstructType, getExpressionName, getInstructionName, getInstructionNameCode, getIteratorFromProcessMethod, getSourceLocator, isXSLT, iterate, process, promote |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Methods inherited from interface javax.xml.transform.SourceLocator |
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getColumnNumber, getLineNumber, getPublicId, getSystemId |
Field Detail |
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protected NamespaceBinding[] namespaceBindings
Constructor Detail |
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public FixedElement(NodeName elementName, NamespaceBinding[] namespaceBindings, boolean inheritNamespaces, SchemaType schemaType, int validation)
elementName
- Represents the name of the element nodenamespaceBindings
- List of namespaces to be added to the element node.
Supply an empty array if none are required.inheritNamespaces
- true if the children of this element are to inherit its namespacesschemaType
- Type annotation for the new element nodevalidation
- Validation mode to be applied, for example STRICT, LAX, SKIPMethod Detail |
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public Expression simplify(ExpressionVisitor visitor) throws XPathException
simplify
in class ParentNodeConstructor
visitor
- the expression visitor
XPathException
- if an error is discovered during expression rewritingprotected void checkContentSequence(StaticContext env) throws XPathException
checkContentSequence
in class ElementCreator
env
- the static context
XPathException
public Expression optimize(ExpressionVisitor visitor, ExpressionVisitor.ContextItemType contextItemType) throws XPathException
Expression
This method is called after all references to functions and variables have been resolved to the declaration of the function or variable, and after all type checking has been done.
optimize
in class ParentNodeConstructor
visitor
- an expression visitorcontextItemType
- the static type of "." at the point where this expression is invoked.
The parameter is set to null if it is known statically that the context item will be undefined.
If the type of the context item is not known statically, the argument is set to
Type.ITEM_TYPE
XPathException
- if an error is discovered during this phase
(typically a type error)public Expression copy()
copy
in class Expression
public ItemType getItemType(TypeHierarchy th)
getItemType
in class ElementCreator
th
- The type hierarchy cache
public NodeName getElementName(XPathContext context, NodeInfo copiedNode)
getElementName
in class ElementCreator
context
- The evaluation context (not used)copiedNode
- For the benefit of the xsl:copy instruction, the node to be copied
public NodeName getElementName()
public String getNewBaseURI(XPathContext context, NodeInfo copiedNode)
ElementCreator
getNewBaseURI
in class ElementCreator
context
- the XPath dynamic evaluation contextcopiedNode
- the node being copied (for xsl:copy), otherwise null
public void checkPermittedContents(SchemaType parentType, StaticContext env, boolean whole) throws XPathException
checkPermittedContents
in class Expression
parentType
- the "given complex type": the method is checking that the nodes returned by this
expression are acceptable members of the content model of this typeenv
- the static contextwhole
- if true, we want to check that the value of this expression satisfies the content model
as a whole; if false we want to check that the value of the expression is acceptable as one part
of the content
XPathException
- if the value delivered by this expression cannot be part of the content model
of the given typeprotected void outputNamespaceNodes(XPathContext context, Receiver out, NodeName nameCode, NodeInfo copiedNode) throws XPathException
outputNamespaceNodes
in class ElementCreator
context
- The evaluation context (not used)out
- The receiver to handle the outputnameCode
- the name of this elementcopiedNode
- in the case of xsl:copy, the node being copied
XPathException
- if a dynamic error occurspublic NamespaceBinding[] getActiveNamespaces()
getActiveNamespaces
in class ElementCreator
public void explain(ExpressionPresenter out)
explain
in class Expression
out
- the expression presenter used to display the structure
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