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)
void	commit()
DataSource	getDataSource()
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()

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.)

返回:

isCreated

抛出:

SQLException - if a database access error occurs, this method is called on a closed connection or the given parameter is not one of the Connection constants

另请参阅:

DatabaseMetaData.supportsTransactionIsolationLevel(int), #getTransactionIsolation

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)

参数:

sql -

args -

返回:

list[0]:columnNames

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)