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.