Package org.intermine.sql.precompute

Class OptimiserCacheLine

java.lang.Object

org.intermine.sql.precompute.OptimiserCacheLine

public class OptimiserCacheLine
extends java.lang.Object

A class that provides an implementation of a cache line, encapsulating several pieces of data.

Author:

Matthew Wakeling

Constructor Summary

Constructors

Constructor	Description
OptimiserCacheLine(java.lang.String optimised, int limit, java.lang.String original)	Constructor for this object.

Method Summary

Modifier and Type	Method	Description
java.lang.String	getOptimised()	Gets the optimised query (minus the LIMIT and OFFSET) from this cache line.
java.lang.String	getOriginal()	Returns the original SQL string.
double	score(int limit)	Scores this cache line according to how far away the required limit is from the limit used to create the line.

Methods inherited from class java.lang.Object

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

Constructor Detail

OptimiserCacheLine

public OptimiserCacheLine(java.lang.String optimised,
                          int limit,
                          java.lang.String original)

Constructor for this object.

Parameters:

optimised - the optimised SQL String, minus the LIMIT and OFFSET

limit - the limit that was used to generate optimised

original - the original sql query

Method Detail

score

public double score(int limit)

Scores this cache line according to how far away the required limit is from the limit used to create the line.

Parameters:

limit - the required limit

Returns:

a double according to how close the match is. Less is better, with 1.0 as a reasonable cut-off point to ignore the line

getOptimised

public java.lang.String getOptimised()

Gets the optimised query (minus the LIMIT and OFFSET) from this cache line.

Returns:

the optimised query

getOriginal

public java.lang.String getOriginal()

Returns the original SQL string.

Returns:

the original SQL string