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:
Serializable, SourceLocator, Binding, Container, Expression, TailCallReturner, InstructionInfoProvider
Enclosing class:
SQLColumn
protected static class SQLColumn.ColumnInstruction extends GeneralVariable
See Also:

  • Constructor Details

    • ColumnInstruction

      public ColumnInstruction()

  • Method Details

    • getInstructionInfo

      public InstructionInfo getInstructionInfo()
      Description copied from class: ComputedExpression
      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)
      Throws:
      XPathException