org.litepal.tablemanager

类 Upgrader

java.lang.Object

org.litepal.LitePalBase

org.litepal.tablemanager.Generator

org.litepal.tablemanager.AssociationCreator

org.litepal.tablemanager.AssociationUpdater

org.litepal.tablemanager.Upgrader

public class Upgrader
extends AssociationUpdater

Upgrade the database. The first step is to remove the columns that can not find the corresponding field in the model class. Then add the new added field as new column into the table. At last it will check all the types of columns to see which are changed.

从以下版本开始:

1.0

字段概要

字段

限定符和类型	字段和说明
protected TableModel	mTableModel Model class for table.
protected TableModel	mTableModelDB Model class for table from database.

从类继承的字段 org.litepal.tablemanager.AssociationUpdater

mDb, TAG

构造器概要

构造器

构造器和说明
Upgrader()

方法概要

限定符和类型	方法和说明
protected void	createOrUpgradeTable(android.database.sqlite.SQLiteDatabase db, boolean force) Analyzing the table model, them remove the dump columns and add new columns of a table.
protected void	createOrUpgradeTable(TableModel tableModel, android.database.sqlite.SQLiteDatabase db, boolean force)
protected java.util.List<java.lang.String>	getCreateTableSQLs(TableModel tableModel, android.database.sqlite.SQLiteDatabase db, boolean force) When creating a new table, it should always try to drop the same name table if exists.

从类继承的方法 org.litepal.tablemanager.AssociationUpdater

addOrUpdateAssociation, clearCopyInTableSchema, dropTables, generateAlterToTempTableSQL, generateDataMigrationSQL, generateDropTempTableSQL, getForeignKeyColumns, getTableModelFromDB, getTempTableName, isForeignKeyColumn, removeColumns

从类继承的方法 org.litepal.tablemanager.AssociationCreator

addForeignKeyColumn, generateAddColumnSQL, generateCreateIndexSQL, generateCreateIndexSQLs, generateCreateTableSQL, generateDropTableSQL, giveTableSchemaACopy, isForeignKeyColumnFormat

从类继承的方法 org.litepal.tablemanager.Generator

execute, getAllAssociations, getAllTableModels

从类继承的方法 org.litepal.LitePalBase

getAssociationInfo, getAssociations, getColumnType, getForeignKeyColumnName, getGenericModels, getGenericTypeClass, getGenericTypeName, getSupportedFields, getSupportedGenericFields, getTableModel, isCollection, isIdColumn, isList, isPrivate, isSet

从类继承的方法 java.lang.Object

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

字段详细资料

mTableModel

protected TableModel mTableModel

Model class for table.

mTableModelDB

protected TableModel mTableModelDB

Model class for table from database.

构造器详细资料

Upgrader

public Upgrader()

方法详细资料

createOrUpgradeTable

protected void createOrUpgradeTable(android.database.sqlite.SQLiteDatabase db,
                                    boolean force)

Analyzing the table model, them remove the dump columns and add new columns of a table.

指定者:

createOrUpgradeTable 在类中 AssociationUpdater

参数:

db - Instance of SQLiteDatabase.

force - Drop the table first if it already exists.

createOrUpgradeTable

protected void createOrUpgradeTable(TableModel tableModel,
                                    android.database.sqlite.SQLiteDatabase db,
                                    boolean force)

getCreateTableSQLs

protected java.util.List<java.lang.String> getCreateTableSQLs(TableModel tableModel,
                                                              android.database.sqlite.SQLiteDatabase db,
                                                              boolean force)

When creating a new table, it should always try to drop the same name table if exists. This method create a SQL array for the whole create table job.

参数:

tableModel - The table model.

db - Instance of SQLiteDatabase.

force - Drop the table first if it already exists.

返回:

A SQL array contains drop table if it exists and create new table.