com.saxonica.codegen
Class IndexedFilterExpressionCompiler

java.lang.Object
  com.saxonica.codegen.ExpressionCompiler
      com.saxonica.codegen.SequenceExpressionCompiler
          com.saxonica.codegen.IndexedFilterExpressionCompiler

public class IndexedFilterExpressionCompiler
extends SequenceExpressionCompiler

Generate Java code to implement an XPath filter expression, one that has already been marked by the Saxon-SA optimizer as suitable for implementation using an indexed lookup

Constructor Summary

IndexedFilterExpressionCompiler()

Method Summary

String

compileToIterator(CompilerService compiler, Expression expr) Generate Java code to evaluate the expression as a SequenceIterator

Methods inherited from class com.saxonica.codegen.SequenceExpressionCompiler

compilePush, compileToCharSequence, compileToEffectiveBooleanValue, compileToItem

Methods inherited from class com.saxonica.codegen.ExpressionCompiler

compileAsLoop, compileToValueRepresentation

Methods inherited from class java.lang.Object

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

Constructor Detail

IndexedFilterExpressionCompiler

public IndexedFilterExpressionCompiler()

Method Detail

compileToIterator

public String compileToIterator(CompilerService compiler,
                                Expression expr)

Description copied from class: ExpressionCompiler

Generate Java code to evaluate the expression as a SequenceIterator

Specified by:

compileToIterator in class ExpressionCompiler

Parameters:

compiler - the compiler service

expr - the XPath expression to be compiled

Returns:

a simple Java expression (usually the name of a variable that has been declared) which will be of class SequenceIterator, and which at run-time will hold an iterator over the the value of the XPath expression