org.apache.seata.rm.datasource.exec

Class BaseTransactionalExecutor<T,S extends Statement>

java.lang.Object

org.apache.seata.rm.datasource.exec.BaseTransactionalExecutor<T,S>

Type Parameters:

T - the type parameter

S - the type parameter

All Implemented Interfaces:

Executor<T>

Direct Known Subclasses:

AbstractDMLBaseExecutor, SelectForUpdateExecutor

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

The type Base transactional executor.

Field Summary

Fields

Modifier and Type	Field and Description
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.

Constructor Summary

Constructors

Constructor and Description
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.

Method Summary

Modifier and Type	Method and Description
protected String	buildLimitCondition(WhereRecognizer recognizer, ArrayList<List<Object>> paramAppenderList) build buildLimitCondition
protected String	buildLockKey(TableRecords rowsIncludingPK) build lockKey
protected String	buildOrderCondition(WhereRecognizer recognizer, ArrayList<List<Object>> paramAppenderList) build buildOrderCondition
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 boolean	containsPK(String tableName, 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 List<String>	getColumnNamesInSQLList(List<String> columnNames) Gets column names in sql.
protected String	getColumnNamesWithTablePrefix(String table, String tableAlias, List<String> columnNameList) Gets several column name in sql.
protected List<String>	getColumnNamesWithTablePrefixList(String table, String tableAlias, List<String> columnNames) Gets column name with table prefix
protected String	getColumnNameWithTablePrefix(String table, String tableAlias, String columnName) Gets column name with table prefix
protected String	getDbType() get db type
protected String	getFromTableInSQL() Gets from table in sql.
protected List<String>	getNeedColumns(String table, String tableAlias, List<String> unescapeColumns)
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.
protected void	validPk(String pkVal) validate that the primary key is free of illegal characters

Methods inherited from class java.lang.Object

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

Field Detail

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.

Constructor Detail

BaseTransactionalExecutor

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

Instantiates a new Base transactional executor.

Parameters:

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.

Parameters:

statementProxy - the statement proxy

statementCallback - the statement callback

sqlRecognizers - the multi sql recognizer

Method Detail

execute

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

Description copied from interface: Executor

Execute t.

Specified by:

execute in interface Executor<T>

Parameters:

args - the args

Returns:

the t

Throws:

Throwable - the throwable

doExecute

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

Do execute object.

Parameters:

args - the args

Returns:

the object

Throws:

Throwable - the throwable

buildWhereCondition

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

build buildWhereCondition

Parameters:

recognizer - the recognizer

paramAppenderList - the param paramAppender list

Returns:

the string

buildOrderCondition

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

build buildOrderCondition

Parameters:

recognizer -

paramAppenderList -

Returns:

the string

buildLimitCondition

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

build buildLimitCondition

Parameters:

recognizer -

paramAppenderList -

Returns:

the string

getColumnNameWithTablePrefix

protected String getColumnNameWithTablePrefix(String table,
                                              String tableAlias,
                                              String columnName)

Gets column name with table prefix

Parameters:

table - the table name

tableAlias - the tableAlias

columnName - the column name

Returns:

getColumnNamesWithTablePrefixList

protected List<String> getColumnNamesWithTablePrefixList(String table,
                                                         String tableAlias,
                                                         List<String> columnNames)

Gets column name with table prefix

Parameters:

table - the table name

tableAlias - the tableAlias

columnNames - the column names

Returns:

getColumnNamesWithTablePrefix

protected String getColumnNamesWithTablePrefix(String table,
                                               String tableAlias,
                                               List<String> columnNameList)

Gets several column name in sql.

Parameters:

table - the table

tableAlias - the table alias

columnNameList - the column name

Returns:

the column name in sql

getColumnNameInSQL

protected String getColumnNameInSQL(String columnName)

Gets column name in sql.

Parameters:

columnName - the column name

Returns:

the column name in sql

getColumnNamesInSQLList

protected List<String> getColumnNamesInSQLList(List<String> columnNames)

Gets column names in sql.

Parameters:

columnNames - the column names

Returns:

getColumnNamesInSQL

protected String getColumnNamesInSQL(List<String> columnNameList)

Gets several column name in sql.

Parameters:

columnNameList - the column name

Returns:

the column name in sql

getFromTableInSQL

protected String getFromTableInSQL()

Gets from table in sql.

Returns:

the from table in sql

getTableMeta

protected TableMeta getTableMeta()

Gets table meta.

Returns:

the table meta

getTableMeta

protected TableMeta getTableMeta(String tableName)

Gets table meta.

Parameters:

tableName - the table name

Returns:

the table meta

containsPK

protected boolean containsPK(List<String> columns)

the columns contains table meta pk

Parameters:

columns - the column name list

Returns:

true: contains pk false: not contains pk

containsPK

protected boolean containsPK(String tableName,
                             List<String> columns)

the columns contains table meta pk

Parameters:

tableName - the tableName

columns - the column name list

Returns:

true: contains pk false: not contains pk

containPK

protected boolean containPK(String columnName)

compare column name and primary key name

Parameters:

columnName - the primary key column name

Returns:

true: contain false: not contain

getStandardPkColumnName

protected String getStandardPkColumnName(String userColumnName)

get standard pk column name from user sql column name

Parameters:

userColumnName - the user column name

Returns:

standard pk column name

prepareUndoLog

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

prepare undo log.

Parameters:

beforeImage - the before image

afterImage - the after image

Throws:

SQLException - the sql exception

validPk

protected void validPk(String pkVal)

validate that the primary key is free of illegal characters

Parameters:

pkVal - primary key value

buildLockKey

protected String buildLockKey(TableRecords rowsIncludingPK)

build lockKey

Parameters:

rowsIncludingPK - the records

Returns:

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

Parameters:

beforeImage - the before image

afterImage - the after image

Returns:

sql undo log

buildTableRecords

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

build a BeforeImage

Parameters:

tableMeta - the tableMeta

selectSQL - the selectSQL

paramAppenderList - the paramAppender list

Returns:

a tableRecords

Throws:

SQLException - the sql exception

buildTableRecords

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

build TableRecords

Parameters:

pkValuesMap - the pkValuesMap

Returns:

return TableRecords;

Throws:

SQLException - the sql exception

getNeedColumns

protected List<String> getNeedColumns(String table,
                                      String tableAlias,
                                      List<String> unescapeColumns)

getDbType

protected String getDbType()

get db type

Returns:

db type