de.lmu.ifi.dbs.elki.datasource

Class PresortedBlindJoinDatabaseConnection

java.lang.Object

de.lmu.ifi.dbs.elki.datasource.AbstractDatabaseConnection

de.lmu.ifi.dbs.elki.datasource.PresortedBlindJoinDatabaseConnection

All Implemented Interfaces:

DatabaseConnection

@Description(value="Blindly joins multiple data sources, assuming they are ordered the same way.")
public class PresortedBlindJoinDatabaseConnection
extends AbstractDatabaseConnection

Joins multiple data sources by their existing order. Make sure the data sources are ordered appropriately!

Since:

0.5.0

Author:

Erich Schubert

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	PresortedBlindJoinDatabaseConnection.Parameterizer Parameterization class.

Field Summary

Fields

Modifier and Type	Field and Description
private static Logging	LOG Logger
protected java.util.List<DatabaseConnection>	sources The filters to invoke

Fields inherited from class de.lmu.ifi.dbs.elki.datasource.AbstractDatabaseConnection

filters, LABEL_CONCATENATION

Constructor Summary

Constructors

Constructor and Description
PresortedBlindJoinDatabaseConnection(java.util.List<ObjectFilter> filters, java.util.List<DatabaseConnection> sources) Constructor.

Method Summary

Modifier and Type	Method and Description
protected Logging	getLogger() Get the logger for this database connection.
MultipleObjectsBundle	loadData() Returns the initial data for a database.

Methods inherited from class de.lmu.ifi.dbs.elki.datasource.AbstractDatabaseConnection

invokeBundleFilters, invokeStreamFilters

Methods inherited from class java.lang.Object

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

Field Detail

LOG

private static final Logging LOG

Logger

sources

protected final java.util.List<DatabaseConnection> sources

The filters to invoke

Constructor Detail

PresortedBlindJoinDatabaseConnection

public PresortedBlindJoinDatabaseConnection(java.util.List<ObjectFilter> filters,
                                            java.util.List<DatabaseConnection> sources)

Constructor.

Parameters:

filters - Filters to use.

sources - Data sources to join.

Method Detail

loadData

public MultipleObjectsBundle loadData()

Description copied from interface: DatabaseConnection

Returns the initial data for a database.

Returns:

a database object bundle

getLogger

protected Logging getLogger()

Description copied from class: AbstractDatabaseConnection

Get the logger for this database connection.

Specified by:

getLogger in class AbstractDatabaseConnection

Returns:

Logger