net.sf.saxon.sql
Class SQLColumn.ColumnInstruction
java.lang.Object
net.sf.saxon.expr.Expression
net.sf.saxon.instruct.Instruction
net.sf.saxon.instruct.GeneralVariable
net.sf.saxon.sql.SQLColumn.ColumnInstruction
- All Implemented Interfaces:
- Serializable, SourceLocator, Binding, EvaluableItem, SequenceIterable, TailCallReturner, InstructionInfoProvider
- Enclosing class:
- SQLColumn
protected static class SQLColumn.ColumnInstruction
- extends GeneralVariable
- See Also:
- Serialized Form
Methods inherited from class net.sf.saxon.instruct.GeneralVariable |
copy, evaluateItem, explain, getCardinality, getEvaluationMode, getInstructionNameCode, getItemType, getLocalSlotNumber, getRequiredType, getSelectExpression, getSelectValue, getSlotNumber, getVariableQName, init, isAssignable, isGlobal, isImplicitlyRequiredParam, isRequiredParam, isTunnelParam, iterate, iterateSubExpressions, optimize, promoteInst, replaceSubExpression, setAssignable, setImplicitlyRequiredParam, setReferenceCount, setRequiredParam, setRequiredType, setSelectExpression, setSlotNumber, setTunnel, setVariableQName, simplify, typeCheck |
Methods inherited from class net.sf.saxon.instruct.Instruction |
assembleParams, assembleTunnelParams, computeCardinality, computeSpecialProperties, createsNewNodes, dynamicError, evaluateAsString, getImplementationMethod, getSourceLocator, isXSLT, process, promote |
Methods inherited from class net.sf.saxon.expr.Expression |
addToPathMap, adoptChildExpression, checkPermittedContents, computeDependencies, computeStaticProperties, display, doPromotion, dynamicError, effectiveBooleanValue, explain, findParentOf, getColumnNumber, getConstructType, getContainer, getDependencies, getExecutable, getHostLanguage, getIntrinsicDependencies, getLineNumber, getLocationId, getLocationProvider, getPublicId, getSlotsUsed, getSpecialProperties, getSystemId, hasLoopingSubexpression, implementsStaticTypeCheck, iterateEvents, markTailFunctionCalls, resetLocalStaticProperties, setContainer, setFiltered, setFlattened, setLocationId, staticTypeCheck, suppressValidation, toString, typeError |
SQLColumn.ColumnInstruction
public SQLColumn.ColumnInstruction()
getInstructionInfo
public InstructionInfo getInstructionInfo()
- Description copied from class:
Expression
- Get InstructionInfo for this expression
- Specified by:
getInstructionInfo
in interface InstructionInfoProvider
- Overrides:
getInstructionInfo
in class Instruction
processLeavingTail
public TailCall processLeavingTail(XPathContext context)
- Description copied from class:
Instruction
- ProcessLeavingTail: called to do the real work of this instruction. This method
must be implemented in each subclass. The results of the instruction are written
to the current Receiver, which can be obtained via the Controller.
- Specified by:
processLeavingTail
in interface TailCallReturner
- Specified by:
processLeavingTail
in class Instruction
- Parameters:
context
- The dynamic context of the transformation, giving access to the current node,
the current variables, etc.
- Returns:
- null if the instruction has completed execution; or a TailCall indicating
a function call or template call that is delegated to the caller, to be made after the stack has
been unwound so as to save stack space.
evaluateVariable
public ValueRepresentation evaluateVariable(XPathContext context)
throws XPathException
- Evaluate the variable (method exists only to satisfy the interface)
- Parameters:
context
- the XPath dynamic evaluation context
- Returns:
- the result of evaluating the variable
- Throws:
XPathException