at.dms.compiler.tools.jperf
Class JPerf

java.lang.Object
  at.dms.compiler.tools.jperf.JPerf

public class JPerf
extends Object

This class represents the perfect hashing function generator

Constructor Summary

JPerf(String[] keywords, String[] header, String[] footer)
Constructs a JPerf object with default load factor of 5

JPerf(String[] keywords, String[] header, String[] footer, double loadFactor)
Constructs a JPerf object

Method Summary

void	build() Builds tables and graph.
void	genCode(String fileName) Dumps result to class source.

Methods inherited from class java.lang.Object

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

Constructor Detail

JPerf

public JPerf(String[] keywords,
             String[] header,
             String[] footer,
             double loadFactor)

Constructs a JPerf object

Parameters:

keywords - the keywords to hash

header - the verbatim part to output at the beginning of the file

footer - the verbatim part to output at the end of the file

loadFactor - factor the load factor

JPerf

public JPerf(String[] keywords,
             String[] header,
             String[] footer)

Constructs a JPerf object with default load factor of 5

Parameters:

keywords - the keywords to hash

header - the verbatim part to output at the beginning of the file

footer - the verbatim part to output at the end of the file

Method Detail

build

public void build()

Builds tables and graph. Tasks: 1. generate the tables table1 and table2; 2. generate the graph 3. assure that the graph is acyclic

genCode

public void genCode(String fileName)
             throws IOException

Dumps result to class source.

Parameters:

fileName - the name of the output file.

Throws:

IOException