Package net.sf.saxon.sql
Class SQLColumn.ColumnInstruction
- java.lang.Object
-
- net.sf.saxon.expr.ComputedExpression
-
- net.sf.saxon.instruct.Instruction
-
- net.sf.saxon.instruct.GeneralVariable
-
- net.sf.saxon.sql.SQLColumn.ColumnInstruction
-
- All Implemented Interfaces:
java.io.Serializable
,javax.xml.transform.SourceLocator
,Binding
,Container
,Expression
,TailCallReturner
,InstructionInfoProvider
- Enclosing class:
- SQLColumn
protected static class SQLColumn.ColumnInstruction extends GeneralVariable
- See Also:
- Serialized Form
-
-
Field Summary
-
Fields inherited from class net.sf.saxon.instruct.GeneralVariable
evaluationMode, nameCode, referenceCount, slotNumber
-
Fields inherited from class net.sf.saxon.expr.ComputedExpression
locationId, staticProperties
-
Fields inherited from interface net.sf.saxon.expr.Expression
EVALUATE_METHOD, ITERATE_METHOD, PROCESS_METHOD
-
-
Constructor Summary
Constructors Constructor Description ColumnInstruction()
-
Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description ValueRepresentation
evaluateVariable(XPathContext context)
Evaluate the variable (method exists only to satisfy the interface)InstructionInfo
getInstructionInfo()
Get InstructionInfo for this expressionTailCall
processLeavingTail(XPathContext context)
ProcessLeavingTail: called to do the real work of this instruction.-
Methods inherited from class net.sf.saxon.instruct.GeneralVariable
display, evaluateItem, getCardinality, getInstructionNameCode, getItemType, getLocalSlotNumber, getNameCode, getRequiredType, getSelectExpression, getSelectValue, getSlotNumber, getVariableFingerprint, getVariableName, init, isAssignable, isGlobal, isImplicitlyRequiredParam, isRequiredParam, isTunnelParam, iterate, iterateSubExpressions, optimize, promoteInst, replaceSubExpression, setAssignable, setImplicitlyRequiredParam, setNameCode, setReferenceCount, setRequiredParam, setRequiredType, setSelectExpression, setSlotNumber, setTunnel, setVariableName, simplify, typeCheck
-
Methods inherited from class net.sf.saxon.instruct.Instruction
appendItem, assembleParams, assembleTunnelParams, computeCardinality, computeSpecialProperties, createsNewNodes, dynamicError, evaluateAsString, getImplementationMethod, getSourceLocator, isXSLT, process, promote
-
Methods inherited from class net.sf.saxon.expr.ComputedExpression
adoptChildExpression, checkPermittedContents, computeDependencies, computeStaticProperties, doPromotion, dynamicError, effectiveBooleanValue, getColumnNumber, getConstructType, getDependencies, getExecutable, getHostLanguage, getIntrinsicDependencies, getLineNumber, getLocationId, getLocationProvider, getParentExpression, getPublicId, getSlotsUsed, getSpecialProperties, getSystemId, hasBadParentPointer, markTailFunctionCalls, resetStaticProperties, setLocationId, setParentExpression, setParentExpression, suppressValidation, typeError
-
-
-
-
Method Detail
-
getInstructionInfo
public InstructionInfo getInstructionInfo()
Description copied from class:ComputedExpression
Get InstructionInfo for this expression- Specified by:
getInstructionInfo
in interfaceInstructionInfoProvider
- Overrides:
getInstructionInfo
in classInstruction
-
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 interfaceTailCallReturner
- Specified by:
processLeavingTail
in classInstruction
- 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)- Throws:
XPathException
-
-