StaticArrayDatabase (ELKI: Environment for DeveLoping KDD-Applications Supported by Index-Structures)

java.lang.Object
- elki.database.AbstractDatabase
- - elki.database.StaticArrayDatabase

All Implemented Interfaces:

Database
```
@Description("Database using an in-memory hashtable and at least providing linear scans.")
public class StaticArrayDatabase
extends AbstractDatabase
```
This database class uses array-based storage and thus does not allow for dynamic insert, delete and update operations. However, array access is expected to be faster and use less memory.

Since:

0.4.0

Author:

Arthur Zimek, Erich Schubert

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static class StaticArrayDatabase.Par
Parameterization class.

Field Summary

Fields
Modifier and Type	Field	Description
`protected DatabaseConnection`	`databaseConnection`	The data source we get the initial data from.
`private DBIDView`	`idrep`	The DBID representation we use
`private ArrayStaticDBIDs`	`ids`	IDs of this database
`private static Logging`	`LOG`	Our logger

Fields inherited from class elki.database.AbstractDatabase
eventManager, indexFactories, relations

Constructor Summary

Constructors
Constructor	Description
`StaticArrayDatabase(DatabaseConnection databaseConnection)`	Constructor with no indexes.
`StaticArrayDatabase(DatabaseConnection databaseConnection, java.util.Collection<? extends IndexFactory<?>> indexFactories)`	Constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected Logging`	`getLogger()`	Get the class logger.
`void`	`initialize()`	Initialize the database by getting the initial data from the database connection.

Methods inherited from class elki.database.AbstractDatabase
accumulateDataStoreEvents, addDataStoreListener, flushDataStoreEvents, getBundle, getLongName, getRelation, getRelations, getShortName, removeDataStoreListener

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
```
    Our logger
  - ids
```
private ArrayStaticDBIDs ids
```
    IDs of this database
  - idrep
```
private DBIDView idrep
```
    The DBID representation we use
  - databaseConnection
```
protected DatabaseConnection databaseConnection
```
    The data source we get the initial data from.
- Constructor Detail
  - StaticArrayDatabase
```
public StaticArrayDatabase(DatabaseConnection databaseConnection,
                           java.util.Collection<? extends IndexFactory<?>> indexFactories)
```
    Constructor.
    
    Parameters:
    
    databaseConnection - Database connection to get the initial data from.
    
    indexFactories - Indexes to add
  - StaticArrayDatabase
```
public StaticArrayDatabase(DatabaseConnection databaseConnection)
```
    Constructor with no indexes.
    
    Parameters:
    
    databaseConnection - Database connection to get the initial data from.
- Method Detail
  - initialize
```
public void initialize()
```
    Initialize the database by getting the initial data from the database connection.
  - getLogger
```
protected Logging getLogger()
```
    Description copied from class: AbstractDatabase
    
    Get the class logger.
    
    Specified by:
    
    getLogger in class AbstractDatabase
    
    Returns:
    
    Class logger