be.SIRAPRISE.util

Class Relations

java.lang.Object

be.SIRAPRISE.util.Relations

public abstract class Relations
extends java.lang.Object

Author:

Erwin

Constructor Summary

Constructors

Constructor and Description
Relations()

Method Summary

Modifier and Type	Method and Description
static java.lang.String	getRelationAttributeValueCommalist(Relation in, NameIdentifier attributeName) Gets a comma-separated list of values held in the tuples of the given relation for the named attribute
static java.lang.String	getRelationAttributeValueCommalist(Relation in, java.lang.String attributeName) Deprecated. - replace with getRelationAttributeValueCommalist(Relation, NameIdentifier)
static RelationBuffer	orderedRelation(MyReadOnlyCollection<TupleBuffer> tupleBufferCollection, ByAttributesTupleBufferOrderer orderer) Gets a relationBuffer in which iteration over the tuples will be in-order, according to the ordering operators associated with the types of the given ordering attributes
static Relation	orderedRelation(Relation r, ByAttributesTupleBufferOrderer orderer) Gets a relation in which iteration over the tuples will be in-order, according to the ordering operators associated with the types of the given ordering attributes

Methods inherited from class java.lang.Object

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

Constructor Detail

Relations

public Relations()

Method Detail

getRelationAttributeValueCommalist

public static java.lang.String getRelationAttributeValueCommalist(Relation in,
                                                                  NameIdentifier attributeName)

Gets a comma-separated list of values held in the tuples of the given relation for the named attribute

Parameters:

in - A relation from which a comma-separated list of values is to be extracted

attributeName - The name of the attribute the values of which are to be listed

Returns:

a comma-separated list of values held in the tuples of the given relation for the named attribute

getRelationAttributeValueCommalist

@Deprecated
public static java.lang.String getRelationAttributeValueCommalist(Relation in,
                                                                              java.lang.String attributeName)

Deprecated. - replace with getRelationAttributeValueCommalist(Relation, NameIdentifier)

Gets a comma-separated list of values held in the tuples of the given relation for the named attribute

Parameters:

in - A relation from which a comma-separated list of values is to be extracted

attributeName - The name of the attribute the values of which are to be listed

Returns:

a comma-separated list of values held in the tuples of the given relation for the named attribute

orderedRelation

public static RelationBuffer orderedRelation(MyReadOnlyCollection<TupleBuffer> tupleBufferCollection,
                                             ByAttributesTupleBufferOrderer orderer)

Gets a relationBuffer in which iteration over the tuples will be in-order, according to the ordering operators associated with the types of the given ordering attributes

Parameters:

tupleBufferCollection - The tupleBuffer collection of which an ordered equivalent is needed

orderer - The orderer to apply to the given relation

Returns:

a relationBuffer in which iteration over the tuples will be in-order, according to the ordering operators associated with the types of the given ordering attributes

orderedRelation

public static Relation orderedRelation(Relation r,
                                       ByAttributesTupleBufferOrderer orderer)

Gets a relation in which iteration over the tuples will be in-order, according to the ordering operators associated with the types of the given ordering attributes

Parameters:

r - The relation of which an ordered equivalent is needed

orderer - The orderer to apply to the given relation

Returns:

a relation in which iteration over the tuples will be in-order, according to the ordering operators associated with the types of the given ordering attributes