Package rasj.odmg

Class RasBag

java.lang.Object

java.util.AbstractCollection

rasj.odmg.RasCollection

rasj.odmg.RasBag

All Implemented Interfaces:

Iterable, Collection, DBag, DCollection

public class RasBag
extends RasCollection
implements DBag

This class implements the ODMG DBag interface.

Constructor Summary

Constructors

Constructor	Description
RasBag()	constructor

Method Summary

Modifier and Type	Method	Description
boolean	add(Object o)	Appends the specified element to this Bag.
DBag	difference(DBag otherBag)	A new DBag instance is created that contains the difference of this object and the DBag instance referenced by otherBag.
DBag	intersection(DBag otherBag)	A new DBag instance is created that contains the intersection of this object and the DBag referenced by otherBag.
Iterator	iterator()	Returns an iterator over the elements in this Bag in proper sequence.
int	occurrences(Object obj)	This method returns the number of occurrences of the object obj in the DBag collection.
int	size()	Returns the number of elements in this Bag.
DBag	union(DBag otherBag)	A new DBag instance is created that is the union of this object and otherBag.

Methods inherited from class rasj.odmg.RasCollection

existsElement, query, select, selectElement

Methods inherited from class java.util.AbstractCollection

addAll, clear, contains, containsAll, isEmpty, remove, removeAll, retainAll, toArray, toArray, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Collection

addAll, clear, contains, containsAll, equals, hashCode, isEmpty, parallelStream, remove, removeAll, removeIf, retainAll, spliterator, stream, toArray, toArray, toArray

Methods inherited from interface org.odmg.DCollection

existsElement, query, select, selectElement

Methods inherited from interface java.lang.Iterable

forEach

Constructor Details

RasBag

public RasBag()

constructor

Method Details

add

public boolean add(Object o)

Appends the specified element to this Bag.

Specified by:

add in interface Collection

Overrides:

add in class AbstractCollection

occurrences

public int occurrences(Object obj)

This method returns the number of occurrences of the object obj in the DBag collection.

Specified by:

occurrences in interface DBag

Parameters:

obj - The value that may have elements in the collection.

Returns:

The number of occurrences of obj in this collection.

difference

public DBag difference(DBag otherBag)

A new DBag instance is created that contains the difference of this object and the DBag instance referenced by otherBag.

Specified by:

difference in interface DBag

Parameters:

otherBag - The other bag to use in creating the difference.

Returns:

A DBag instance that contains the elements of this object minus the elements in otherBag.

intersection

public DBag intersection(DBag otherBag)

A new DBag instance is created that contains the intersection of this object and the DBag referenced by otherBag.

Specified by:

intersection in interface DBag

Parameters:

otherBag - The other bag to use in creating the intersection.

Returns:

A DBag instance that contains the intersection of this object and otherBag.

union

public DBag union(DBag otherBag)

A new DBag instance is created that is the union of this object and otherBag.

Specified by:

union in interface DBag

Parameters:

otherBag - The other bag to use in the union operation.

Returns:

A DBag instance that contains the union of this object and otherBag.

iterator

public Iterator iterator()

Returns an iterator over the elements in this Bag in proper sequence.

Specified by:

iterator in interface Collection

Specified by:

iterator in interface Iterable

Overrides:

iterator in class RasCollection

size

public int size()

Returns the number of elements in this Bag.

Specified by:

size in interface Collection

Overrides:

size in class RasCollection