top.onceio.core.db.jdbc

类 JdbcHelper

java.lang.Object

top.onceio.core.db.jdbc.JdbcHelper

public class JdbcHelper
extends Object

构造器概要

构造器

构造器和说明
JdbcHelper()

方法概要

限定符和类型	方法和说明
int[]	batchExec(String... sqls)
int[]	batchUpdate(String sql)
int[]	batchUpdate(String sql, List<Object[]> batchArgs)
boolean	beginTransaction(int level, boolean readOnly) Attempts to change the transaction isolation level for this Connection object to the one given.
List<Object[]>	call(String sql, Object[] args) 返回数据中list[0] 是字段名，list[1-n]是字段所对应的数据
void	commit()
DataSource	getDataSource()
DBType	getDBType()
void	query(String sql, Object[] args, Consumer<ResultSet> consumer)
Object	queryForObject(String sql)
Object	queryForObject(String sql, Object[] args)
void	rollback()
void	rollback(Savepoint sp)
void	setDataSource(DataSource dataSource)
Savepoint	setSavepoint()
int	update(String sql, Object[] args)

从类继承的方法 java.lang.Object

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

构造器详细资料

JdbcHelper

public JdbcHelper()

方法详细资料

getDataSource

public DataSource getDataSource()

getDBType

public DBType getDBType()

setDataSource

public void setDataSource(DataSource dataSource)

beginTransaction

public boolean beginTransaction(int level,
                                boolean readOnly)

Attempts to change the transaction isolation level for this Connection object to the one given. The constants defined in the interface Connection are the possible transaction isolation levels.

Note: If this method is called during a transaction, the result is implementation-defined.

参数:

level - one of the following Connection constants: Connection.TRANSACTION_READ_UNCOMMITTED, Connection.TRANSACTION_READ_COMMITTED, Connection.TRANSACTION_REPEATABLE_READ, or Connection.TRANSACTION_SERIALIZABLE. (Note that Connection.TRANSACTION_NONE cannot be used because it specifies that transactions are not supported.)

readOnly - 是否是只读

返回:

isCreated

另请参阅:

DatabaseMetaData.supportsTransactionIsolationLevel(int)

setSavepoint

public Savepoint setSavepoint()

rollback

public void rollback(Savepoint sp)

rollback

public void rollback()

commit

public void commit()

call

public List<Object[]> call(String sql,
                           Object[] args)

返回数据中list[0] 是字段名，list[1-n]是字段所对应的数据

参数:

sql - 使用替代符的SQL语句

args - SQL参数列表

返回:

list[n]:row data list[0] is the columnNames,list[1] is the first row data of thus columns.

batchExec

public int[] batchExec(String... sqls)

query

public void query(String sql,
                  Object[] args,
                  Consumer<ResultSet> consumer)

queryForObject

public Object queryForObject(String sql)

queryForObject

public Object queryForObject(String sql,
                             Object[] args)

batchUpdate

public int[] batchUpdate(String sql)

batchUpdate

public int[] batchUpdate(String sql,
                         List<Object[]> batchArgs)

update

public int update(String sql,
                  Object[] args)