net.sf.saxon.sql
Class SQLColumn.ColumnInstruction

java.lang.Object
  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

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

variableFingerprint

Fields inherited from class net.sf.saxon.instruct.Instruction

children

Constructor Summary

SQLColumn.ColumnInstruction()

Method Summary

TailCall	processLeavingTail(XPathContext context) ProcessLeavingTail: called to do the real work of this instruction.
void	setInstructionDetails(Controller controller, NamePool namePool, InstructionDetails details) Get the name of the instruction for use in diagnostics

Methods inherited from class net.sf.saxon.instruct.GeneralVariable

containsLocals, getRequiredType, getResultType, getSelectExpression, getSelectValue, getVariableFingerprint, init, isAssignable, isGlobal, isRequiredParam, isTunnelParam, setAssignable, setContainsLocals, setGlobal, setRequiredParam, setRequiredType, setSelect, setTunnel, setVariableFingerprint

Methods inherited from class net.sf.saxon.instruct.Instruction

assembleParams, assembleTunnelParams, getChildren, getColumnNumber, getInstructionDetails, getInstructionName, getLineNumber, getPublicId, getSystemId, getSystemId, process, processChildren, processChildrenLeavingTail, recoverableError, setChildren, setSourceLocation, styleError, styleError

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SQLColumn.ColumnInstruction

public SQLColumn.ColumnInstruction()

Method Detail

setInstructionDetails

public void setInstructionDetails(Controller controller,
                                  NamePool namePool,
                                  InstructionDetails details)

Description copied from class: Instruction

Get the name of the instruction for use in diagnostics

Overrides:

setInstructionDetails in class GeneralVariable

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 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.