io.seata.rm.datasource.undo

类 AbstractUndoExecutor

java.lang.Object

io.seata.rm.datasource.undo.AbstractUndoExecutor

直接已知子类:

MySQLUndoDeleteExecutor, MySQLUndoInsertExecutor, MySQLUndoUpdateExecutor, OracleUndoDeleteExecutor, OracleUndoInsertExecutor, OracleUndoUpdateExecutor

public abstract class AbstractUndoExecutor
extends Object

The type Abstract undo executor.

字段概要

字段

限定符和类型	字段和说明
static boolean	IS_UNDO_DATA_VALIDATION_ENABLE Switch of undo data validation
protected SQLUndoLog	sqlUndoLog The Sql undo log.

构造器概要

构造器

构造器和说明
AbstractUndoExecutor(SQLUndoLog sqlUndoLog) Instantiates a new Abstract undo executor.

方法概要

限定符和类型	方法和说明
protected abstract String	buildUndoSQL() Build undo sql string.
protected boolean	dataValidationAndGoOn(Connection conn) Data validation.
void	executeOn(Connection conn) Execute on.
SQLUndoLog	getSqlUndoLog() Gets sql undo log.
protected abstract TableRecords	getUndoRows() Gets undo rows.
protected Object[]	parsePkValues(TableRecords records) Parse pk values object [ ].
protected TableRecords	queryCurrentRecords(Connection conn) Query current records.
protected void	undoPrepare(PreparedStatement undoPST, ArrayList<Field> undoValues, Field pkValue) Undo prepare.

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

IS_UNDO_DATA_VALIDATION_ENABLE

public static final boolean IS_UNDO_DATA_VALIDATION_ENABLE

Switch of undo data validation

sqlUndoLog

protected SQLUndoLog sqlUndoLog

The Sql undo log.

构造器详细资料

AbstractUndoExecutor

public AbstractUndoExecutor(SQLUndoLog sqlUndoLog)

Instantiates a new Abstract undo executor.

参数:

sqlUndoLog - the sql undo log

方法详细资料

buildUndoSQL

protected abstract String buildUndoSQL()

Build undo sql string.

返回:

the string

getSqlUndoLog

public SQLUndoLog getSqlUndoLog()

Gets sql undo log.

返回:

the sql undo log

executeOn

public void executeOn(Connection conn)
               throws SQLException

Execute on.

参数:

conn - the conn

抛出:

SQLException - the sql exception

undoPrepare

protected void undoPrepare(PreparedStatement undoPST,
                           ArrayList<Field> undoValues,
                           Field pkValue)
                    throws SQLException

Undo prepare.

参数:

undoPST - the undo pst

undoValues - the undo values

pkValue - the pk value

抛出:

SQLException - the sql exception

getUndoRows

protected abstract TableRecords getUndoRows()

Gets undo rows.

返回:

the undo rows

dataValidationAndGoOn

protected boolean dataValidationAndGoOn(Connection conn)
                                 throws SQLException

Data validation.

参数:

conn - the conn

返回:

return true if data validation is ok and need continue undo, and return false if no need continue undo.

抛出:

SQLException - the sql exception such as has dirty data

queryCurrentRecords

protected TableRecords queryCurrentRecords(Connection conn)
                                    throws SQLException

Query current records.

参数:

conn - the conn

返回:

the table records

抛出:

SQLException - the sql exception

parsePkValues

protected Object[] parsePkValues(TableRecords records)

Parse pk values object [ ].

参数:

records - the records

返回:

the object [ ]