public class ComputedElement extends ElementCreator
FixedElement
inheritNamespacesFromParent, inheritNamespacesToChildren
contentOp, preservingTypes
EFFECTIVE_BOOLEAN_VALUE, EVALUATE_METHOD, ITEM_FEED_METHOD, ITERATE_METHOD, MAX_SEQUENCE_LENGTH, MAX_STRING_LENGTH, PROCESS_METHOD, staticProperties, UNBOUNDED_LOWER, UNBOUNDED_UPPER, UPDATE_METHOD, WATCH_METHOD
Constructor and Description |
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ComputedElement(Expression elementName,
Expression namespace,
SchemaType schemaType,
int validation,
boolean inheritNamespaces,
boolean allowQName)
Create an instruction that creates a new element node
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Modifier and Type | Method and Description |
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void |
checkPermittedContents(SchemaType parentType,
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(RebindingMap rebindings)
Copy an expression.
|
void |
export(ExpressionPresenter out)
Diagnostic print of expression structure.
|
NodeName |
getElementName(XPathContext context,
NodeInfo copiedNode)
Callback from the superclass ElementCreator to get the nameCode
for the element name
|
int |
getInstructionNameCode()
Get the name of this instruction for diagnostic and tracing purposes
|
ItemType |
getItemType()
Get the item type of the value returned by this instruction
|
Expression |
getNameExp()
Get the expression used to compute the element name
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Expression |
getNamespaceExp()
Get the expression used to compute the namespace URI
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NamespaceResolver |
getNamespaceResolver()
Get the namespace resolver that provides the namespace bindings defined in the static context
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java.lang.String |
getNewBaseURI(XPathContext context,
NodeInfo copiedNode)
Get the base URI for the element being constructed
|
boolean |
isAllowNameAsQName()
Ask whether the name can be supplied as a QName.
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java.lang.Iterable<Operand> |
operands()
Get the immediate sub-expressions of this expression, with information about the relationship
of each expression to its parent expression.
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void |
outputNamespaceNodes(XPathContext context,
Receiver out,
NodeName nameCode,
NodeInfo copiedNode)
Callback to output namespace nodes for the new element.
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protected void |
setNameExp(Expression elementName) |
protected void |
setNamespaceExp(Expression namespace) |
Expression |
simplify()
Simplify an expression.
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Expression |
typeCheck(ExpressionVisitor visitor,
ContextItemStaticInfo contextInfo)
Perform type checking of an expression and its subexpressions.
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checkContentSequence, computeSpecialProperties, evaluateItem, exportValidationAndType, getActiveNamespaces, getCardinality, getImplementationMethod, getInheritanceFlags, getStreamerName, isInheritNamespacesFromParent, isInheritNamespacesToChildren, processLeavingTail, processLeavingTail, setInheritanceFlags, setInheritNamespacesFromParent, setInheritNamespacesToChildren, suppressValidation
addToPathMap, allowExtractingCommonSubexpressions, alwaysCreatesNewNodes, computeCardinality, getContentExpression, getContentOperand, getSchemaType, getValidationAction, getValidationOptions, isLazyConstruction, isLocal, isPreservingTypes, mayCreateNewNodes, optimize, setBaseURI, setContentExpression, setLazyConstruction, setNoNeedToStrip, setValidationAction
assembleParams, assembleTunnelParams, dynamicError, evaluateAsString, getConstructType, getExpressionName, getInstructionName, getNetCost, getSourceLocator, isInstruction, isXSLT, iterate, process, someOperandCreatesNewNodes
adoptChildExpression, checkedOperands, checkForUpdatingSubexpressions, computeDependencies, computeHashCode, computeStaticProperties, dynamicError, effectiveBooleanValue, evaluatePendingUpdates, explain, getConfiguration, getCost, getDependencies, getEvaluationMethod, getExtraProperty, getIntegerBounds, getInterpretedExpression, getIntrinsicDependencies, getLocalRetainedStaticContext, getLocation, getObjectName, getPackageData, getParentExpression, getProperties, getProperty, getRetainedStaticContext, getScopingExpression, getSlotsUsed, getSpecialProperties, getStaticBaseURI, getStaticBaseURIString, getStaticType, getStaticUType, hasCompatibleStaticContext, hashCode, hasVariableBinding, identityHashCode, implementsStaticTypeCheck, isCallOn, isCallOnSystemFunction, isIdentical, isLiftable, isMultiThreaded, isSameExpression, isStaticPropertiesKnown, isSubtreeExpression, isUpdatingExpression, isVacuousExpression, markTailFunctionCalls, operandList, operandSparseList, optimizeChildren, resetLocalStaticProperties, restoreParentPointers, setEvaluationMethod, setExtraProperty, setFiltered, setFlattened, setLocation, setParentExpression, setRetainedStaticContext, setRetainedStaticContextLocally, setRetainedStaticContextThoroughly, setStaticProperty, simplifyChildren, staticTypeCheck, toPattern, toShortString, toString, typeCheckChildren, typeError, unordered, verifyParentPointers, verifyParentPointers
public ComputedElement(Expression elementName, Expression namespace, SchemaType schemaType, int validation, boolean inheritNamespaces, boolean allowQName)
elementName
- Expression that evaluates to produce the name of the
element node as a lexical QNamenamespace
- Expression that evaluates to produce the namespace URI of
the element node. Set to null if the namespace is to be deduced from the prefix
of the elementName.schemaType
- The required schema type for the contentvalidation
- Required validation mode (e.g. STRICT, LAX, SKIP)inheritNamespaces
- true if child elements automatically inherit the namespaces of their parentallowQName
- True if the elementName expression is allowed to return a QNameValue; false ifpublic Expression getNameExp()
public Expression getNamespaceExp()
protected void setNameExp(Expression elementName)
protected void setNamespaceExp(Expression namespace)
public java.lang.Iterable<Operand> operands()
Expression
If the expression is a Callable, then it is required that the order of the operands returned by this function is the same as the order of arguments supplied to the corresponding call() method.
operands
in class Instruction
public NamespaceResolver getNamespaceResolver()
public Expression simplify() throws XPathException
Expression
simplify
in class Expression
XPathException
- if an error is discovered during expression
rewritingpublic Expression typeCheck(ExpressionVisitor visitor, ContextItemStaticInfo contextInfo) throws XPathException
Expression
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 may not be accurately known if they have not been explicitly declared.
typeCheck
in class ParentNodeConstructor
visitor
- an expression visitorcontextInfo
- Information available statically about the context item: whether it is (possibly)
absent; its static type; its streaming posture.XPathException
- if an error is discovered during this phase
(typically a type error)public Expression copy(RebindingMap rebindings)
copy
in class Expression
rebindings
- public ItemType getItemType()
getItemType
in class ElementCreator
public void checkPermittedContents(SchemaType parentType, 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 typewhole
- 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 contentXPathException
- if the value delivered by this expression cannot be part of the content model
of the given typepublic NodeName getElementName(XPathContext context, NodeInfo copiedNode) throws XPathException
getElementName
in class ElementCreator
context
- The evaluation context (not used)copiedNode
- Not applicable to this overloadXPathException
- if a failure occurspublic boolean isAllowNameAsQName()
public java.lang.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 nullpublic void outputNamespaceNodes(XPathContext context, Receiver out, NodeName nameCode, NodeInfo copiedNode) throws XPathException
outputNamespaceNodes
in class ElementCreator
context
- The execution contextout
- the Receiver where the namespace nodes are to be writtennameCode
- The name of the element node being outputcopiedNode
- Where this is a copied node, the node being copiedXPathException
public int getInstructionNameCode()
getInstructionNameCode
in class Instruction
public void export(ExpressionPresenter out) throws XPathException
export
in interface ExportAgent
export
in class Expression
out
- the expression presenter used to display the structureXPathException
- if the export fails, for example if an expression is found that won't work
in the target environment.Copyright (c) 2004-2018 Saxonica Limited. All rights reserved.