LSRelation (bddbddb 1.0 API)

Overview

Package

Class

Use

Tree

Deprecated

Index

Help

PREV CLASS NEXT CLASS

FRAMES NO FRAMES

SUMMARY: NESTED | FIELD | CONSTR | METHOD

DETAIL: FIELD | CONSTR | METHOD

net.sf.bddbddb
Class LSRelation

java.lang.Object
  net.sf.bddbddb.Relation
      net.sf.bddbddb.LSRelation

public class LSRelation
extends Relation
extends Relation

LSRelation

Version:: $Id: LSRelation.java 649 2006-09-16 05:51:04Z joewhaley $
Author:: jwhaley

Nested Class Summary
`static class`	`LSRelation.TupleComparator`

Field Summary
`static LSRelation.TupleComparator`	`TUPLE_COMPARATOR`

Fields inherited from class net.sf.bddbddb.Relation
`attributes, id, name, negated`

Method Summary
`boolean`	`add(java.math.BigInteger[] t)` Add tuple to this relation.
`protected int`	`compress(java.math.BigInteger[] arr)` Compress the given array into a packed value.
`boolean`	`contains(int k, java.math.BigInteger j)` Returns true iff this relation contains a tuple where the kth field is value j.
`Relation`	`copy()` Make a copy of this relation.
`double`	`dsize()` Return the number of tuples in this relation, in double format.
`protected void`	`extract(java.math.BigInteger[] arr, int x)` Extract packed value x into given array.
`void`	`free()` Free the memory associated with this relation.
`void`	`initialize()` Initialize this relation.
`TupleIterator`	`iterator()` Return an iterator over the tuples of this relation.
`TupleIterator`	`iterator(java.math.BigInteger[] j)` Return an iterator over the tuples where the fields match the values in the given array.
`TupleIterator`	`iterator(int k)` Return an iterator over the values in the kth field of the relation.
`TupleIterator`	`iterator(int k, java.math.BigInteger j)` Return an iterator over the tuples where the kth field has value j.
`void`	`load()` Load this relation from disk in its native format.
`void`	`loadTuples()` Load the tuple form of this relation from disk.
`void`	`loadTuples(java.lang.String filename)` Load this relation in tuple form from the given file.
`void`	`save()` Save the current value of this relation to disk in its native format.
`void`	`saveTuples()` Save the current value of this relation to disk in tuple form.
`void`	`saveTuples(java.lang.String filename)` Save the value of this relation in tuple form to the given file.
`java.lang.String`	`verboseToString()` Returns a verbose representation of the relation

Methods inherited from class net.sf.bddbddb.Relation
`elementsToString, fromXMLElement, getAttribNameMap, getAttribute, getAttribute, getAttributes, getConstraints, getNegated, hashCode, makeNegated, numberOfAttributes, setConstraints, size, toString, toXMLElement`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, notify, notifyAll, wait, wait, wait`

Field Detail

TUPLE_COMPARATOR

public static final LSRelation.TupleComparator TUPLE_COMPARATOR

Method Detail

add

public boolean add(java.math.BigInteger[] t)

Add tuple to this relation.

Specified by:: add in class Relation

Parameters:: t - tuple to add
Returns:: whether relation has changed

extract

protected void extract(java.math.BigInteger[] arr,
                       int x)

Extract packed value x into given array.

Parameters:: arr - array to extract into; x - packed value

compress

protected int compress(java.math.BigInteger[] arr)

Compress the given array into a packed value.

Parameters:: arr - array to compress
Returns:: packed value