uk.ac.ic.doc.rodex.qproc
Interface QueryRewritable

All Known Subinterfaces:

IQueryCache

All Known Implementing Classes:

DefaultQueryCache, QueryCache

public interface QueryRewritable

QueryRewritable.java To be implemented by query caches that want to use QueryRewrite service (e.g. DefaultQueryCache for an example)

Author:

Duc M Le dmle@doc.ic.ac.uk

Method Summary

QueryRewriterResult

rewrite(ASG query, Schema querySchema, int type) Rewrite a query associated to a schema s using the local query cache

Method Detail

rewrite

QueryRewriterResult rewrite(ASG query,
                            Schema querySchema,
                            int type)
                            throws QueryRewriterException

Rewrite a query associated to a schema s using the local query cache

Parameters:

query - the ASG query

querySchema - the source schema over which query is executed

type - specifies the type of query rewriting algorithm used (QueryRewriteProcessor for list of types)

Returns:

QueryRewriterResult a result object that can be used to manipulate the rewriting results

Throws:

QueryRewriterException