Package cn.mapway.ui.server.db

Class PgTools

java.lang.Object

cn.mapway.ui.server.db.PgTools

All Implemented Interfaces:

IDbSource, Closeable, AutoCloseable

public class PgTools
extends Object
implements IDbSource, Closeable

Pg数据库工具 -------------------------- 该工具可以将一数据库表的元数据和数据导出到一个SQLITE中 也可以从Sqlite中恢复表 SQLite文件包含了数据表的定义和数据

Constructor Summary

Constructors

Constructor	Description
PgTools(Connection connection, String db)

Method Summary

Modifier and Type	Method	Description
void	backupToSqlite(String schema, String tableName, String sqliteFile, IProgressHandler handler)	备份一张表到sqlite中
void	close()
static PgTools	create(String host, String port, String db, String userName, String password)
boolean	createDatabase(String dbName, String owner)	创建数据库
String	createSqlFromMetadata(TableMetadata tableMetadata, String schemaName, String newTableName)	生成创建表的SQL
void	createTable(TableMetadata tableMetadata, boolean dropIfExists)
void	dropTable(TableMetadata tableMetadata)
void	eachRow(TableMetadata tableMetadata, org.nutz.lang.Each<ResultSet> consumer)	遍历数据库中没一条记录
TableMetadata	fetchTableMetadata(String schema, String sourceTableName)	获取表元数据
String	generateDropTableSql(TableMetadata tableMetadata)
String	generateSelectQuery(TableMetadata tableMetadata)
long	getRowCount(TableMetadata tableMetadata)	获取表的记录数量
boolean	installExtension(String extension)	数据库安装扩展
boolean	isDatabaseExist(String databaseName)	判断postgres是否存在数据库
boolean	isTableExist(String schema, String tableName)
List<String>	listTable(String schema)
List<String>	listView(Connection conn, String schema)
static void	main(String[] args)
void	restore(IDbSource dbSource, TableMetadata sourceMetadata, TableMetadata targetMetadata, IProgressHandler handler)	从数据源中恢复数据
void	restoreFromSqlite(String schema, String tableName, String sqliteFile, IProgressHandler handler)	从sqlite中恢复一张表
void	truncateTable(String schema, String tableName)
void	updateTableIndex(TableMetadata tableMetadata)	更新表索引

Methods inherited from class java.lang.Object

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

Constructor Detail

PgTools

public PgTools(Connection connection,
               String db)

Method Detail

backupToSqlite

public void backupToSqlite(String schema,
                           String tableName,
                           String sqliteFile,
                           IProgressHandler handler)
                    throws Exception

备份一张表到sqlite中

Parameters:

tableName -

sqliteFile -

Throws:

Exception

restoreFromSqlite

public void restoreFromSqlite(String schema,
                              String tableName,
                              String sqliteFile,
                              IProgressHandler handler)
                       throws Exception

从sqlite中恢复一张表

Parameters:

schema -

tableName -

sqliteFile -

handler -

Throws:

Exception

create

public static PgTools create(String host,
                             String port,
                             String db,
                             String userName,
                             String password)
                      throws SQLException

Throws:

SQLException

listTable

public List<String> listTable(String schema)

listView

public List<String> listView(Connection conn,
                             String schema)

fetchTableMetadata

public TableMetadata fetchTableMetadata(String schema,
                                        String sourceTableName)
                                 throws SQLException

获取表元数据

Parameters:

sourceTableName - "public.sys_config"

Returns:

表的元数据

Throws:

SQLException

updateTableIndex

public void updateTableIndex(TableMetadata tableMetadata)

更新表索引

Parameters:

tableMetadata -

eachRow

public void eachRow(TableMetadata tableMetadata,
                    org.nutz.lang.Each<ResultSet> consumer)
             throws SQLException

遍历数据库中没一条记录

Specified by:

eachRow in interface IDbSource

Parameters:

tableMetadata -

consumer -

Throws:

SQLException

restore

public void restore(IDbSource dbSource,
                    TableMetadata sourceMetadata,
                    TableMetadata targetMetadata,
                    IProgressHandler handler)
             throws SQLException

从数据源中恢复数据

Parameters:

dbSource -

sourceMetadata - 原表元数据

targetMetadata - 目标表元数据

handler -

Throws:

SQLException

generateSelectQuery

public String generateSelectQuery(TableMetadata tableMetadata)

getRowCount

public long getRowCount(TableMetadata tableMetadata)

获取表的记录数量

Parameters:

tableMetadata -

Returns:

isTableExist

public boolean isTableExist(String schema,
                            String tableName)

dropTable

public void dropTable(TableMetadata tableMetadata)

truncateTable

public void truncateTable(String schema,
                          String tableName)

generateDropTableSql

public String generateDropTableSql(TableMetadata tableMetadata)

createTable

public void createTable(TableMetadata tableMetadata,
                        boolean dropIfExists)

createSqlFromMetadata

public String createSqlFromMetadata(TableMetadata tableMetadata,
                                    String schemaName,
                                    String newTableName)

生成创建表的SQL

Parameters:

tableMetadata -

Returns:

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Throws:

IOException

isDatabaseExist

public boolean isDatabaseExist(String databaseName)

判断postgres是否存在数据库

Parameters:

databaseName -

Returns:

createDatabase

public boolean createDatabase(String dbName,
                              String owner)

创建数据库

Parameters:

dbName -

owner -

installExtension

public boolean installExtension(String extension)

数据库安装扩展

Parameters:

extension -

Returns:

main

public static void main(String[] args)