infovis.metadata
Class AggregationFactory

java.lang.Object
  infovis.utils.BasicFactory
      infovis.metadata.AggregationFactory

All Implemented Interfaces:

AggregationConstants, Constants

public class AggregationFactory
extends BasicFactory
implements AggregationConstants

Class AggregationFactory manages hierarchical aggregation in columns.

Version:

$Revision: 1.3 $

Author:

Jean-Daniel Fekete

Field Summary

static AggregationFactory

instance Instance of AggregationFactory.

Fields inherited from interface infovis.metadata.AggregationConstants

AGGREGATE_COMPATIBLE, AGGREGATE_NO, AGGREGATE_YES, AGGREGATION_TYPE, AGGREGATION_TYPE_ADDITIVE, AGGREGATION_TYPE_ATLEAF, AGGREGATION_TYPE_CONCAT, AGGREGATION_TYPE_MAX, AGGREGATION_TYPE_MEAN, AGGREGATION_TYPE_MIN, AGGREGATION_TYPE_NONE

Fields inherited from interface infovis.metadata.Constants

CONTRIBUTOR, COVERAGE, CREATOR, DATE, DESCRITION, FORMAT, IDENTIFIER, LANGUAGE, PUBLISHER, RELATION, RIGHTS, SOURCE, SUBJECT, TITLE, TYPE

Constructor Summary

AggregationFactory()

Method Summary

Aggregation	get(Column col, Tree tree)
Aggregation	get(String type)
static Aggregation	getAggregation(Column col, Tree tree)
static String	getAggregationType(Column col, Tree tree) Returns the aggregation type name of a specified column in a specified tree.
static AggregationFactory	getInstance() Returns the instance.
String	getType(Column col, Tree tree)
String	guessAggregationType(Column col, Tree tree)
Iterator	iterator()
Aggregation	putAggregationType(String type, Aggregation aggr)

Methods inherited from class infovis.utils.BasicFactory

loadProperties

Methods inherited from class java.lang.Object

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

Field Detail

instance

public static final AggregationFactory instance

Instance of AggregationFactory.

Constructor Detail

AggregationFactory

public AggregationFactory()

Method Detail

getInstance

public static AggregationFactory getInstance()

Returns the instance.

Returns:

the instance.

getAggregationType

public static String getAggregationType(Column col,
                                        Tree tree)

Returns the aggregation type name of a specified column in a specified tree.

Parameters:

col - the column

tree - the tree

Returns:

the aggregation type name

getAggregation

public static Aggregation getAggregation(Column col,
                                         Tree tree)

get

public Aggregation get(String type)

get

public Aggregation get(Column col,
                       Tree tree)

getType

public String getType(Column col,
                      Tree tree)

guessAggregationType

public String guessAggregationType(Column col,
                                   Tree tree)

putAggregationType

public Aggregation putAggregationType(String type,
                                      Aggregation aggr)

iterator

public Iterator iterator()