UIQ3/net.sourceforge.uiq3.database/Helper

Helper

abstract class Helper

Database helper class used to manage the creation and upgrading of the database. This class also provides the SQLiteDatabase object used by the other classes.

Author

sergey.zaburunov

Constructors

Helper

protected constructor(context: Context, mapperList: Array<IDataMapper>)

constructor

Types

OpenHelper

protected open class OpenHelper

Open helper class to manage database creation and version management.

Properties

context

private val context: Context

external context

val db: SQLiteDatabase

database connection object

fileDir

val fileDir: File

a directory (mostly on sd card) to store blob objects.

instance

open var instance: Helper

instance object to access the class

mapperList

private val mapperList: Array<IDataMapper>

List of manages data mapper.

openHelper

private val openHelper: Helper.OpenHelper

Open helper to manage database creation and version management

TAG

private val TAG: String

Logging tag

Functions

clone

protected open fun clone(): Any

open fun close()

close all db connections and destroy class

createTables

private open fun createTables(db: SQLiteDatabase)

Create all tables.

Database_Name

protected abstract fun Database_Name(): String

The name of the database file

Database_Version

protected abstract fun Database_Version(): Int

current database version

deleteTables

open fun deleteTables()

Delete all rows from all tables.

dropTables

private open fun dropTables(db: SQLiteDatabase)

Drop all tables.

equals

open fun equals(obj: Any): Boolean

finalize

protected open fun finalize()

getClass

fun getClass(): Class<out Any>

hashCode

open fun hashCode(): Int

hasInstance

open fun hasInstance(): Boolean

Checks if the db singleton has been set.

notify

fun notify()

notifyAll

fun notifyAll()

onUpgrade

protected abstract fun onUpgrade(db: SQLiteDatabase, oldVersion: Int, newVersion: Int): Boolean

upgrade all tables

test_createTables

open fun test_createTables()

Create all tables.

test_dropTables

open fun test_dropTables()

Drop all tables.

toString

open fun toString(): String

wait

fun wait()