Package net.risesoft.api.utils.jdbc

Class DBUtil

java.lang.Object

net.risesoft.api.utils.jdbc.DBUtil

public final class DBUtil
extends Object

Method Summary

Modifier and Type	Method	Description
static boolean	asyncResultSetNext(ResultSet resultSet)	异步获取resultSet的next(),注意，千万不能应用在数据的读取中。
static boolean	asyncResultSetNext(ResultSet resultSet, int timeout)
static boolean	checkDeletePrivilege(DataBaseType dataBaseType, String jdbcURL, String userName, String password, List<String> tableList)
static boolean	checkInsertPrivilege(DataBaseType dataBaseType, String jdbcURL, String userName, String password, List<String> tableList)
static String	chooseJdbcUrl(DataBaseType dataBaseType, List<String> jdbcUrls, String username, String password, List<String> preSql, boolean checkSlave)
static String	chooseJdbcUrlWithoutRetry(DataBaseType dataBaseType, List<String> jdbcUrls, String username, String password, List<String> preSql, boolean checkSlave)
static void	closeDBResources(ResultSet rs, Statement stmt, Connection conn)
static void	closeDBResources(Statement stmt, Connection conn)
static void	closeResultSet(ResultSet rs)	Close ResultSet, Statement referenced by this ResultSet
static void	executeSqlWithoutResultSet(Statement stmt, String sql)
static org.apache.commons.lang3.tuple.Triple<List<String>,List<Integer>,List<String>>	getColumnMetaData(Connection conn, String tableName, String column)	获取表元数据
static org.apache.commons.lang3.tuple.Triple<List<String>,List<Integer>,List<String>>	getColumnMetaData(DataBaseType dataBaseType, String jdbcUrl, String user, String pass, String tableName, String column)
static Connection	getConnection(DataBaseType dataBaseType, String jdbcUrl, String username, String password)	Get direct JDBC connection
static Connection	getConnection(DataBaseType dataBaseType, String jdbcUrl, String username, String password, String socketTimeout)
static Connection	getConnectionWithoutRetry(DataBaseType dataBaseType, String jdbcUrl, String username, String password)	Get direct JDBC connection
static Connection	getConnectionWithoutRetry(DataBaseType dataBaseType, String jdbcUrl, String username, String password, String socketTimeout)
static List<String>	getTableColumns(DataBaseType dataBaseType, String jdbcUrl, String user, String pass, String tableName)
static List<String>	getTableColumnsByConn(DataBaseType dataBaseType, Connection conn, String tableName, String basicMsg)
static boolean	hasInsertPrivilege(DataBaseType dataBaseType, String jdbcURL, String userName, String password, List<String> tableList)	检查表是否具有insert 权限 insert on *.* 或者 insert on database.* 时验证通过 当insert on database.tableName时，确保tableList中的所有table有insert 权限，验证通过 其它验证都不通过
static boolean	isOracleMaster(String url, String user, String pass)
static ResultSet	query(Connection conn, String sql)
static ResultSet	query(Connection conn, String sql, int fetchSize)	a wrapped method to execute select-like sql statement .
static ResultSet	query(Connection conn, String sql, int fetchSize, int queryTimeout)	a wrapped method to execute select-like sql statement .
static ResultSet	query(Statement stmt, String sql)	a wrapped method to execute select-like sql statement .
static void	sqlValid(String sql, DataBaseType dataBaseType)
static boolean	testConnWithoutRetry(DataBaseType dataBaseType, String url, String user, String pass, boolean checkSlave)
static boolean	testConnWithoutRetry(DataBaseType dataBaseType, String url, String user, String pass, List<String> preSql)

Methods inherited from class java.lang.Object

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

Method Detail

chooseJdbcUrl

public static String chooseJdbcUrl(DataBaseType dataBaseType,
                                   List<String> jdbcUrls,
                                   String username,
                                   String password,
                                   List<String> preSql,
                                   boolean checkSlave)

chooseJdbcUrlWithoutRetry

public static String chooseJdbcUrlWithoutRetry(DataBaseType dataBaseType,
                                               List<String> jdbcUrls,
                                               String username,
                                               String password,
                                               List<String> preSql,
                                               boolean checkSlave)
                                        throws Exception

Throws:

Exception

hasInsertPrivilege

public static boolean hasInsertPrivilege(DataBaseType dataBaseType,
                                         String jdbcURL,
                                         String userName,
                                         String password,
                                         List<String> tableList)

检查表是否具有insert 权限 insert on *.* 或者 insert on database.* 时验证通过 当insert on database.tableName时，确保tableList中的所有table有insert 权限，验证通过 其它验证都不通过

checkInsertPrivilege

public static boolean checkInsertPrivilege(DataBaseType dataBaseType,
                                           String jdbcURL,
                                           String userName,
                                           String password,
                                           List<String> tableList)

checkDeletePrivilege

public static boolean checkDeletePrivilege(DataBaseType dataBaseType,
                                           String jdbcURL,
                                           String userName,
                                           String password,
                                           List<String> tableList)

getConnection

public static Connection getConnection(DataBaseType dataBaseType,
                                       String jdbcUrl,
                                       String username,
                                       String password)

Get direct JDBC connection

if connecting failed, try to connect for MAX_TRY_TIMES times

NOTE: In DataX, we don't need connection pool in fact

getConnection

public static Connection getConnection(DataBaseType dataBaseType,
                                       String jdbcUrl,
                                       String username,
                                       String password,
                                       String socketTimeout)

Parameters:

dataBaseType -

jdbcUrl -

username -

password -

socketTimeout - 设置socketTimeout，单位ms，String类型

Returns:

getConnectionWithoutRetry

public static Connection getConnectionWithoutRetry(DataBaseType dataBaseType,
                                                   String jdbcUrl,
                                                   String username,
                                                   String password)

Get direct JDBC connection

if connecting failed, try to connect for MAX_TRY_TIMES times

NOTE: In DataX, we don't need connection pool in fact

getConnectionWithoutRetry

public static Connection getConnectionWithoutRetry(DataBaseType dataBaseType,
                                                   String jdbcUrl,
                                                   String username,
                                                   String password,
                                                   String socketTimeout)

query

public static ResultSet query(Connection conn,
                              String sql,
                              int fetchSize)
                       throws SQLException

a wrapped method to execute select-like sql statement .

Parameters:

conn - Database connection .

sql - sql statement to be executed

Returns:

a ResultSet

Throws:

SQLException - if occurs SQLException.

query

public static ResultSet query(Connection conn,
                              String sql,
                              int fetchSize,
                              int queryTimeout)
                       throws SQLException

a wrapped method to execute select-like sql statement .

Parameters:

conn - Database connection .

sql - sql statement to be executed

fetchSize -

queryTimeout - unit:second

Returns:

Throws:

SQLException

query

public static ResultSet query(Statement stmt,
                              String sql)
                       throws SQLException

a wrapped method to execute select-like sql statement .

Parameters:

stmt - Statement

sql - sql statement to be executed

Returns:

a ResultSet

Throws:

SQLException - if occurs SQLException.

executeSqlWithoutResultSet

public static void executeSqlWithoutResultSet(Statement stmt,
                                              String sql)
                                       throws SQLException

Throws:

SQLException

closeResultSet

public static void closeResultSet(ResultSet rs)

Close ResultSet, Statement referenced by this ResultSet

Parameters:

rs - ResultSet to be closed

Throws:

IllegalArgumentException

closeDBResources

public static void closeDBResources(ResultSet rs,
                                    Statement stmt,
                                    Connection conn)

closeDBResources

public static void closeDBResources(Statement stmt,
                                    Connection conn)

getTableColumns

public static List<String> getTableColumns(DataBaseType dataBaseType,
                                           String jdbcUrl,
                                           String user,
                                           String pass,
                                           String tableName)

getTableColumnsByConn

public static List<String> getTableColumnsByConn(DataBaseType dataBaseType,
                                                 Connection conn,
                                                 String tableName,
                                                 String basicMsg)

getColumnMetaData

public static org.apache.commons.lang3.tuple.Triple<List<String>,List<Integer>,List<String>> getColumnMetaData(DataBaseType dataBaseType,
                                                                                                                           String jdbcUrl,
                                                                                                                           String user,
                                                                                                                           String pass,
                                                                                                                           String tableName,
                                                                                                                           String column)

Returns:

Left:ColumnName Middle:ColumnType Right:ColumnTypeName

getColumnMetaData

public static org.apache.commons.lang3.tuple.Triple<List<String>,List<Integer>,List<String>> getColumnMetaData(Connection conn,
                                                                                                                           String tableName,
                                                                                                                           String column)

获取表元数据

Returns:

Left:ColumnName Middle:ColumnType Right:ColumnTypeName

testConnWithoutRetry

public static boolean testConnWithoutRetry(DataBaseType dataBaseType,
                                           String url,
                                           String user,
                                           String pass,
                                           boolean checkSlave)

testConnWithoutRetry

public static boolean testConnWithoutRetry(DataBaseType dataBaseType,
                                           String url,
                                           String user,
                                           String pass,
                                           List<String> preSql)

isOracleMaster

public static boolean isOracleMaster(String url,
                                     String user,
                                     String pass)

query

public static ResultSet query(Connection conn,
                              String sql)
                       throws SQLException

Throws:

SQLException

sqlValid

public static void sqlValid(String sql,
                            DataBaseType dataBaseType)

asyncResultSetNext

public static boolean asyncResultSetNext(ResultSet resultSet)

异步获取resultSet的next(),注意，千万不能应用在数据的读取中。只能用在meta的获取

Parameters:

resultSet -

Returns:

asyncResultSetNext

public static boolean asyncResultSetNext(ResultSet resultSet,
                                         int timeout)