org.makumba.providers.query
Class Pass1ASTPrinter.AssociativeFlatVisitor

java.lang.Object
  org.makumba.providers.QueryAnalysisProvider.ASTTransformVisitor
      org.makumba.providers.query.Pass1ASTPrinter.AssociativeFlatVisitor

Enclosing class:

Pass1ASTPrinter

static class Pass1ASTPrinter.AssociativeFlatVisitor
extends QueryAnalysisProvider.ASTTransformVisitor

Pulls up an associative operator from (OP a (OP b c)) to (OP (OP a b) c). This helps detect equivalent trees.

Version:

$Id: Pass1ASTPrinter.java,v 1.1 Apr 21, 2010 9:34:21 AM cristi Exp $

Author:

cristi

Field Summary

Fields inherited from class org.makumba.providers.QueryAnalysisProvider.ASTTransformVisitor

repetitive

Constructor Summary

Pass1ASTPrinter.AssociativeFlatVisitor()

Method Summary

antlr.collections.AST

visit(antlr.collections.AST current)

Methods inherited from class org.makumba.providers.QueryAnalysisProvider.ASTTransformVisitor

getPath, isRepetitive, traverse

Methods inherited from class java.lang.Object

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

Constructor Detail

Pass1ASTPrinter.AssociativeFlatVisitor

public Pass1ASTPrinter.AssociativeFlatVisitor()

Method Detail

visit

public antlr.collections.AST visit(antlr.collections.AST current)

Specified by:

visit in class QueryAnalysisProvider.ASTTransformVisitor