uk.ac.bbk.dcs.automed.qproc.annotate
Class QueryAnnotator

java.lang.Object
  uk.ac.bbk.dcs.automed.qproc.annotate.QueryAnnotator

public class QueryAnnotator
extends java.lang.Object

This class annotates an input IQL query in the form of an ASG by inserting wrapper objects in the original ASG structure. The wrapper objects are placed after the class discovers the largest possible subtrees that each wrapper can translate.

Author:

Lucas Zamboulis

Constructor Summary

QueryAnnotator(boolean debug, Schema[] tgts)

QueryAnnotator(Schema[] tgts)
Create a new Annotator object

Method Summary

static void	main(java.lang.String[] args)
void	process(ASG query) Processes the input query: checks and finds the largest possible subtrees that can be translated by wrappers & contain schemes from the same data source, then inserts the necessary wrapper objects.

Methods inherited from class java.lang.Object

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

Constructor Detail

QueryAnnotator

public QueryAnnotator(boolean debug,
                      Schema[] tgts)

Parameters:

debug - set to true to display debugging information

QueryAnnotator

public QueryAnnotator(Schema[] tgts)

Create a new Annotator object

Method Detail

process

public void process(ASG query)
             throws java.lang.Exception

Processes the input query: checks and finds the largest possible subtrees that can be translated by wrappers & contain schemes from the same data source, then inserts the necessary wrapper objects.

Parameters:

query - the input query, after it has been processed by the query reformulator

tgts - the target schemas - same as the ones passed to the query reformulator

Throws:

java.lang.Exception

main

public static void main(java.lang.String[] args)