io.seata.rm.datasource.exec

类 BaseTransactionalExecutor<T,S extends Statement>

java.lang.Object

io.seata.rm.datasource.exec.BaseTransactionalExecutor<T,S>

类型参数:

T - the type parameter

S - the type parameter

所有已实现的接口:

Executor<T>

直接已知子类:

AbstractDMLBaseExecutor, SelectForUpdateExecutor

public abstract class BaseTransactionalExecutor<T,S extends Statement>
extends Object
implements Executor<T>

The type Base transactional executor.

字段概要

字段

限定符和类型	字段和说明
protected SQLRecognizer	sqlRecognizer The Sql recognizer.
protected List<SQLRecognizer>	sqlRecognizers The Sql recognizer.
protected StatementCallback<T,S>	statementCallback The Statement callback.
protected StatementProxy<S>	statementProxy The Statement proxy.

构造器概要

构造器

构造器和说明
BaseTransactionalExecutor(StatementProxy<S> statementProxy, StatementCallback<T,S> statementCallback, List<SQLRecognizer> sqlRecognizers) Instantiates a new Base transactional executor.
BaseTransactionalExecutor(StatementProxy<S> statementProxy, StatementCallback<T,S> statementCallback, SQLRecognizer sqlRecognizer) Instantiates a new Base transactional executor.

方法概要

限定符和类型	方法和说明
protected String	buildLockKey(TableRecords rowsIncludingPK) build lockKey
protected TableRecords	buildTableRecords(Map<String,List<Object>> pkValuesMap) build TableRecords
protected TableRecords	buildTableRecords(TableMeta tableMeta, String selectSQL, ArrayList<List<Object>> paramAppenderList) build a BeforeImage
protected SQLUndoLog	buildUndoItem(TableRecords beforeImage, TableRecords afterImage) build a SQLUndoLog
protected String	buildWhereCondition(WhereRecognizer recognizer, ArrayList<List<Object>> paramAppenderList) build buildWhereCondition
protected boolean	containPK(String columnName) compare column name and primary key name
protected boolean	containsPK(List<String> columns) the columns contains table meta pk
protected abstract T	doExecute(Object... args) Do execute object.
T	execute(Object... args) Execute t.
protected String	getColumnNameInSQL(String columnName) Gets column name in sql.
protected String	getColumnNamesInSQL(List<String> columnNameList) Gets several column name in sql.
protected String	getDbType() get db type
protected String	getFromTableInSQL() Gets from table in sql.
protected String	getStandardPkColumnName(String userColumnName) get standard pk column name from user sql column name
protected TableMeta	getTableMeta() Gets table meta.
protected TableMeta	getTableMeta(String tableName) Gets table meta.
protected void	prepareUndoLog(TableRecords beforeImage, TableRecords afterImage) prepare undo log.

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

statementProxy

protected StatementProxy<S extends Statement> statementProxy

The Statement proxy.

statementCallback

protected StatementCallback<T,S extends Statement> statementCallback

The Statement callback.

sqlRecognizer

protected SQLRecognizer sqlRecognizer

The Sql recognizer.

sqlRecognizers

protected List<SQLRecognizer> sqlRecognizers

The Sql recognizer.

构造器详细资料

BaseTransactionalExecutor

public BaseTransactionalExecutor(StatementProxy<S> statementProxy,
                                 StatementCallback<T,S> statementCallback,
                                 SQLRecognizer sqlRecognizer)

Instantiates a new Base transactional executor.

参数:

statementProxy - the statement proxy

statementCallback - the statement callback

sqlRecognizer - the sql recognizer

BaseTransactionalExecutor

public BaseTransactionalExecutor(StatementProxy<S> statementProxy,
                                 StatementCallback<T,S> statementCallback,
                                 List<SQLRecognizer> sqlRecognizers)

Instantiates a new Base transactional executor.

参数:

statementProxy - the statement proxy

statementCallback - the statement callback

sqlRecognizers - the multi sql recognizer

方法详细资料

execute

public T execute(Object... args)
          throws Throwable

从接口复制的说明: Executor

Execute t.

指定者:

execute 在接口中 Executor<T>

参数:

args - the args

返回:

the t

抛出:

Throwable - the throwable

doExecute

protected abstract T doExecute(Object... args)
                        throws Throwable

Do execute object.

参数:

args - the args

返回:

the object

抛出:

Throwable - the throwable

buildWhereCondition

protected String buildWhereCondition(WhereRecognizer recognizer,
                                     ArrayList<List<Object>> paramAppenderList)

build buildWhereCondition

参数:

recognizer - the recognizer

paramAppenderList - the param paramAppender list

返回:

the string

getColumnNameInSQL

protected String getColumnNameInSQL(String columnName)

Gets column name in sql.

参数:

columnName - the column name

返回:

the column name in sql

getColumnNamesInSQL

protected String getColumnNamesInSQL(List<String> columnNameList)

Gets several column name in sql.

参数:

columnNameList - the column name

返回:

the column name in sql

getFromTableInSQL

protected String getFromTableInSQL()

Gets from table in sql.

返回:

the from table in sql

getTableMeta

protected TableMeta getTableMeta()

Gets table meta.

返回:

the table meta

getTableMeta

protected TableMeta getTableMeta(String tableName)

Gets table meta.

参数:

tableName - the table name

返回:

the table meta

containsPK

protected boolean containsPK(List<String> columns)

the columns contains table meta pk

参数:

columns - the column name list

返回:

true: contains pk false: not contains pk

containPK

protected boolean containPK(String columnName)

compare column name and primary key name

参数:

columnName - the primary key column name

返回:

true: contain false: not contain

getStandardPkColumnName

protected String getStandardPkColumnName(String userColumnName)

get standard pk column name from user sql column name

返回:

prepareUndoLog

protected void prepareUndoLog(TableRecords beforeImage,
                              TableRecords afterImage)
                       throws SQLException

prepare undo log.

参数:

beforeImage - the before image

afterImage - the after image

抛出:

SQLException - the sql exception

buildLockKey

protected String buildLockKey(TableRecords rowsIncludingPK)

build lockKey

参数:

rowsIncludingPK - the records

返回:

the string as local key. the local key example(multi pk): "t_user:1_a,2_b"

buildUndoItem

protected SQLUndoLog buildUndoItem(TableRecords beforeImage,
                                   TableRecords afterImage)

build a SQLUndoLog

参数:

beforeImage - the before image

afterImage - the after image

返回:

sql undo log

buildTableRecords

protected TableRecords buildTableRecords(TableMeta tableMeta,
                                         String selectSQL,
                                         ArrayList<List<Object>> paramAppenderList)
                                  throws SQLException

build a BeforeImage

参数:

tableMeta - the tableMeta

selectSQL - the selectSQL

paramAppenderList - the paramAppender list

返回:

a tableRecords

抛出:

SQLException - the sql exception

buildTableRecords

protected TableRecords buildTableRecords(Map<String,List<Object>> pkValuesMap)
                                  throws SQLException

build TableRecords

参数:

pkValuesMap - the pkValuesMap

返回:

return TableRecords;

抛出:

SQLException

getDbType

protected String getDbType()

get db type

返回: