org.activiti.engine.impl.db

Class DbSqlSession

java.lang.Object

org.activiti.engine.impl.db.DbSqlSession

All Implemented Interfaces:

Session

Direct Known Subclasses:

ProfilingDbSqlSession

public class DbSqlSession
extends Object
implements Session

Field Summary

Fields

Modifier and Type	Field and Description
protected static List<ActivitiVersion>	ACTIVITI_VERSIONS
protected Map<Class<? extends Entity>,List<BulkDeleteOperation>>	bulkDeleteOperations
protected static Pattern	CLEAN_VERSION_REGEX
protected String	connectionMetadataDefaultCatalog
protected String	connectionMetadataDefaultSchema
protected DbSqlSessionFactory	dbSqlSessionFactory
protected Map<Class<? extends Entity>,Map<String,Entity>>	deletedObjects
protected EntityCache	entityCache
protected Map<Class<? extends Entity>,Map<String,Entity>>	insertedObjects
static String[]	JDBC_METADATA_TABLE_TYPES
protected static String	LAST_V5_VERSION
protected org.apache.ibatis.session.SqlSession	sqlSession
protected List<Entity>	updatedObjects

Constructor Summary

Constructors

Constructor and Description
DbSqlSession(DbSqlSessionFactory dbSqlSessionFactory, EntityCache entityCache)
DbSqlSession(DbSqlSessionFactory dbSqlSessionFactory, EntityCache entityCache, Connection connection, String catalog, String schema)

Method Summary

Modifier and Type	Method and Description
protected String	addMissingComponent(String missingComponents, String component)
protected String	addSqlStatementPiece(String sqlStatement, String line)
protected Entity	cacheLoadOrStore(Entity entity) Returns the object in the cache.
protected List	cacheLoadOrStore(List<Object> loadedObjects)
void	close()
protected void	collectChildExecutionsForInsertion(List<Entity> result, Map<String,List<ExecutionEntity>> parentToChildrenMapping, Set<String> handledExecutionIds, String parentId, boolean parentBeforeChildExecution)
void	commit()
DeploymentQueryImpl	createDeploymentQuery()
ExecutionQueryImpl	createExecutionQuery()
HistoricActivityInstanceQueryImpl	createHistoricActivityInstanceQuery()
HistoricDetailQueryImpl	createHistoricDetailQuery()
HistoricProcessInstanceQueryImpl	createHistoricProcessInstanceQuery()
HistoricTaskInstanceQueryImpl	createHistoricTaskInstanceQuery()
HistoricVariableInstanceQueryImpl	createHistoricVariableInstanceQuery()
JobQueryImpl	createJobQuery()
ModelQueryImpl	createModelQueryImpl()
ProcessDefinitionQueryImpl	createProcessDefinitionQuery()
ProcessInstanceQueryImpl	createProcessInstanceQuery()
TaskQueryImpl	createTaskQuery()
void	dbSchemaCheckVersion()
void	dbSchemaCreate()
protected void	dbSchemaCreateEngine()
protected void	dbSchemaCreateHistory()
void	dbSchemaDrop()
void	dbSchemaPrune()
String	dbSchemaUpdate()
protected void	dbSchemaUpgrade(String component, int currentDatabaseVersionsIndex)
protected void	debugFlush()
void	delete(Entity entity)
void	delete(String statement, Object parameter, Class<? extends Entity> entityClass) Executes a BulkDeleteOperation, with the sql in the statement parameter.
void	determineUpdatedObjects()
void	executeMandatorySchemaResource(String operation, String component)
void	executeSchemaResource(String operation, String component, String resourceName, boolean isOptional)
protected int	findMatchingVersionIndex(String dbVersion) Returns the index in the list of ACTIVITI_VERSIONS matching the provided string version.
void	flush()
protected void	flushBulkDeletes(Class<? extends Entity> entityClass)
protected void	flushBulkInsert(Collection<Entity> entities, Class<? extends Entity> clazz)
protected void	flushDeleteEntities(Class<? extends Entity> entityClass, Collection<Entity> entitiesToDelete)
protected void	flushDeletes()
protected void	flushInsertEntities(Class<? extends Entity> entityClass, Collection<Entity> entitiesToInsert)
protected void	flushInserts()
protected void	flushRegularInsert(Entity entity, Class<? extends Entity> clazz)
protected void	flushUpdates()
protected String	getCleanVersion(String versionString)
<T> T	getCustomMapper(Class<T> type)
DbSqlSessionFactory	getDbSqlSessionFactory()
protected String	getDbVersion()
String	getResourceForDbOperation(String directory, String operation, String component)
org.apache.ibatis.session.SqlSession	getSqlSession()
protected void	incrementRevision(Entity insertedObject)
void	insert(Entity entity)
boolean	isEngineTablePresent()
boolean	isEntityInserted(Entity entity)
boolean	isEntityToBeDeleted(Entity entity)
boolean	isHistoryTablePresent()
protected boolean	isMissingTablesException(Exception e)
boolean	isMysql()
boolean	isOracle()
boolean	isTablePresent(String tableName)
protected boolean	isUpgradeNeeded(String versionInDatabase)
protected Collection<Entity>	orderExecutionEntities(Map<String,Entity> executionEntities, boolean parentBeforeChildExecution)
void	performSchemaOperationsProcessEngineBuild()
void	performSchemaOperationsProcessEngineClose()
protected String	prependDatabaseTablePrefix(String tableName)
protected String	readNextTrimmedLine(BufferedReader reader)
protected void	removeUnnecessaryOperations() Clears all deleted and inserted objects from the cache, and removes inserts and deletes that cancel each other.
void	rollback()
<T extends Entity> T	selectById(Class<T> entityClass, String id)
<T extends Entity> T	selectById(Class<T> entityClass, String id, boolean useCache)
List	selectList(String statement)
List	selectList(String statement, ListQueryParameterObject parameter)
List	selectList(String statement, ListQueryParameterObject parameter, boolean useCache)
List	selectList(String statement, ListQueryParameterObject parameter, Page page)
List	selectList(String statement, ListQueryParameterObject parameter, Page page, boolean useCache)
List	selectList(String statement, Object parameter)
List	selectList(String statement, Object parameter, boolean useCache)
List	selectList(String statement, Object parameter, int firstResult, int maxResults)
List	selectList(String statement, Object parameter, int firstResult, int maxResults, boolean useCache)
List	selectList(String statement, Object parameter, Page page)
List	selectList(String statement, Object parameter, Page page, boolean useCache)
List	selectListWithRawParameter(String statement, Object parameter, int firstResult, int maxResults)
List	selectListWithRawParameter(String statement, Object parameter, int firstResult, int maxResults, boolean useCache)
List	selectListWithRawParameterWithoutFilter(String statement, Object parameter, int firstResult, int maxResults)
Object	selectOne(String statement, Object parameter)
void	update(Entity entity)
int	update(String statement, Object parameters)
protected String	updateDdlForMySqlVersionLowerThan56(String ddlStatements) MySQL is funny when it comes to timestamps and dates.

Methods inherited from class java.lang.Object

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

Field Detail

CLEAN_VERSION_REGEX

protected static final Pattern CLEAN_VERSION_REGEX

LAST_V5_VERSION

protected static final String LAST_V5_VERSION

See Also:

Constant Field Values

ACTIVITI_VERSIONS

protected static final List<ActivitiVersion> ACTIVITI_VERSIONS

sqlSession

protected org.apache.ibatis.session.SqlSession sqlSession

dbSqlSessionFactory

protected DbSqlSessionFactory dbSqlSessionFactory

entityCache

protected EntityCache entityCache

insertedObjects

protected Map<Class<? extends Entity>,Map<String,Entity>> insertedObjects

deletedObjects

protected Map<Class<? extends Entity>,Map<String,Entity>> deletedObjects

bulkDeleteOperations

protected Map<Class<? extends Entity>,List<BulkDeleteOperation>> bulkDeleteOperations

updatedObjects

protected List<Entity> updatedObjects

connectionMetadataDefaultCatalog

protected String connectionMetadataDefaultCatalog

connectionMetadataDefaultSchema

protected String connectionMetadataDefaultSchema

JDBC_METADATA_TABLE_TYPES

public static String[] JDBC_METADATA_TABLE_TYPES

Constructor Detail

DbSqlSession

public DbSqlSession(DbSqlSessionFactory dbSqlSessionFactory,
                    EntityCache entityCache)

DbSqlSession

public DbSqlSession(DbSqlSessionFactory dbSqlSessionFactory,
                    EntityCache entityCache,
                    Connection connection,
                    String catalog,
                    String schema)

Method Detail

insert

public void insert(Entity entity)

update

public void update(Entity entity)

update

public int update(String statement,
                  Object parameters)

delete

public void delete(String statement,
                   Object parameter,
                   Class<? extends Entity> entityClass)

Executes a BulkDeleteOperation, with the sql in the statement parameter. The passed class determines when this operation will be executed: it will be executed when the particular class has passed in the EntityDependencyOrder.

delete

public void delete(Entity entity)

selectList

public List selectList(String statement)

selectList

public List selectList(String statement,
                       Object parameter)

selectList

public List selectList(String statement,
                       Object parameter,
                       boolean useCache)

selectList

public List selectList(String statement,
                       Object parameter,
                       Page page)

selectList

public List selectList(String statement,
                       Object parameter,
                       Page page,
                       boolean useCache)

selectList

public List selectList(String statement,
                       ListQueryParameterObject parameter,
                       Page page)

selectList

public List selectList(String statement,
                       ListQueryParameterObject parameter,
                       Page page,
                       boolean useCache)

selectList

public List selectList(String statement,
                       Object parameter,
                       int firstResult,
                       int maxResults)

selectList

public List selectList(String statement,
                       Object parameter,
                       int firstResult,
                       int maxResults,
                       boolean useCache)

selectList

public List selectList(String statement,
                       ListQueryParameterObject parameter)

selectList

public List selectList(String statement,
                       ListQueryParameterObject parameter,
                       boolean useCache)

selectListWithRawParameter

public List selectListWithRawParameter(String statement,
                                       Object parameter,
                                       int firstResult,
                                       int maxResults)

selectListWithRawParameter

public List selectListWithRawParameter(String statement,
                                       Object parameter,
                                       int firstResult,
                                       int maxResults,
                                       boolean useCache)

selectListWithRawParameterWithoutFilter

public List selectListWithRawParameterWithoutFilter(String statement,
                                                    Object parameter,
                                                    int firstResult,
                                                    int maxResults)

selectOne

public Object selectOne(String statement,
                        Object parameter)

selectById

public <T extends Entity> T selectById(Class<T> entityClass,
                                       String id)

selectById

public <T extends Entity> T selectById(Class<T> entityClass,
                                       String id,
                                       boolean useCache)

cacheLoadOrStore

protected List cacheLoadOrStore(List<Object> loadedObjects)

cacheLoadOrStore

protected Entity cacheLoadOrStore(Entity entity)

Returns the object in the cache. If this object was loaded before, then the original object is returned (the cached version is more recent). If this is the first time this object is loaded, then the loadedObject is added to the cache.

flush

public void flush()

Specified by:

flush in interface Session

removeUnnecessaryOperations

protected void removeUnnecessaryOperations()

Clears all deleted and inserted objects from the cache, and removes inserts and deletes that cancel each other.

Also removes deletes with duplicate ids.

determineUpdatedObjects

public void determineUpdatedObjects()

debugFlush

protected void debugFlush()

isEntityInserted

public boolean isEntityInserted(Entity entity)

isEntityToBeDeleted

public boolean isEntityToBeDeleted(Entity entity)

flushInserts

protected void flushInserts()

flushInsertEntities

protected void flushInsertEntities(Class<? extends Entity> entityClass,
                                   Collection<Entity> entitiesToInsert)

orderExecutionEntities

protected Collection<Entity> orderExecutionEntities(Map<String,Entity> executionEntities,
                                                    boolean parentBeforeChildExecution)

collectChildExecutionsForInsertion

protected void collectChildExecutionsForInsertion(List<Entity> result,
                                                  Map<String,List<ExecutionEntity>> parentToChildrenMapping,
                                                  Set<String> handledExecutionIds,
                                                  String parentId,
                                                  boolean parentBeforeChildExecution)

flushRegularInsert

protected void flushRegularInsert(Entity entity,
                                  Class<? extends Entity> clazz)

flushBulkInsert

protected void flushBulkInsert(Collection<Entity> entities,
                               Class<? extends Entity> clazz)

incrementRevision

protected void incrementRevision(Entity insertedObject)

flushUpdates

protected void flushUpdates()

flushDeletes

protected void flushDeletes()

flushBulkDeletes

protected void flushBulkDeletes(Class<? extends Entity> entityClass)

flushDeleteEntities

protected void flushDeleteEntities(Class<? extends Entity> entityClass,
                                   Collection<Entity> entitiesToDelete)

close

public void close()

Specified by:

close in interface Session

commit

public void commit()

rollback

public void rollback()

dbSchemaCheckVersion

public void dbSchemaCheckVersion()

addMissingComponent

protected String addMissingComponent(String missingComponents,
                                     String component)

getDbVersion

protected String getDbVersion()

dbSchemaCreate

public void dbSchemaCreate()

dbSchemaCreateHistory

protected void dbSchemaCreateHistory()

dbSchemaCreateEngine

protected void dbSchemaCreateEngine()

dbSchemaDrop

public void dbSchemaDrop()

dbSchemaPrune

public void dbSchemaPrune()

executeMandatorySchemaResource

public void executeMandatorySchemaResource(String operation,
                                           String component)

dbSchemaUpdate

public String dbSchemaUpdate()

findMatchingVersionIndex

protected int findMatchingVersionIndex(String dbVersion)

Returns the index in the list of ACTIVITI_VERSIONS matching the provided string version. Returns -1 if no match can be found.

isEngineTablePresent

public boolean isEngineTablePresent()

isHistoryTablePresent

public boolean isHistoryTablePresent()

isTablePresent

public boolean isTablePresent(String tableName)

isUpgradeNeeded

protected boolean isUpgradeNeeded(String versionInDatabase)

getCleanVersion

protected String getCleanVersion(String versionString)

prependDatabaseTablePrefix

protected String prependDatabaseTablePrefix(String tableName)

dbSchemaUpgrade

protected void dbSchemaUpgrade(String component,
                               int currentDatabaseVersionsIndex)

getResourceForDbOperation

public String getResourceForDbOperation(String directory,
                                        String operation,
                                        String component)

executeSchemaResource

public void executeSchemaResource(String operation,
                                  String component,
                                  String resourceName,
                                  boolean isOptional)

updateDdlForMySqlVersionLowerThan56

protected String updateDdlForMySqlVersionLowerThan56(String ddlStatements)

MySQL is funny when it comes to timestamps and dates.

More specifically, for a DDL statement like 'MYCOLUMN timestamp(3)': - MySQL 5.6.4+ has support for timestamps/dates with millisecond (or smaller) precision. The DDL above works and the data in the table will have millisecond precision - MySQL < 5.5.3 allows the DDL statement, but ignores it. The DDL above works but the data won't have millisecond precision - MySQL 5.5.3 < [version] < 5.6.4 gives and exception when using the DDL above.

Also, the 5.5 and 5.6 branches of MySQL are both actively developed and patched.

Hence, when doing auto-upgrade/creation of the Activiti tables, the default MySQL DDL file is used and all timestamps/datetimes are converted to not use the millisecond precision by string replacement done in the method below.

If using the DDL files directly (which is a sane choice in production env.), there is a distinction between MySQL version < 5.6.

addSqlStatementPiece

protected String addSqlStatementPiece(String sqlStatement,
                                      String line)

readNextTrimmedLine

protected String readNextTrimmedLine(BufferedReader reader)
                              throws IOException

Throws:

IOException

isMissingTablesException

protected boolean isMissingTablesException(Exception e)

performSchemaOperationsProcessEngineBuild

public void performSchemaOperationsProcessEngineBuild()

performSchemaOperationsProcessEngineClose

public void performSchemaOperationsProcessEngineClose()

getCustomMapper

public <T> T getCustomMapper(Class<T> type)

isMysql

public boolean isMysql()

isOracle

public boolean isOracle()

createDeploymentQuery

public DeploymentQueryImpl createDeploymentQuery()

createModelQueryImpl

public ModelQueryImpl createModelQueryImpl()

createProcessDefinitionQuery

public ProcessDefinitionQueryImpl createProcessDefinitionQuery()

createProcessInstanceQuery

public ProcessInstanceQueryImpl createProcessInstanceQuery()

createExecutionQuery

public ExecutionQueryImpl createExecutionQuery()

createTaskQuery

public TaskQueryImpl createTaskQuery()

createJobQuery

public JobQueryImpl createJobQuery()

createHistoricProcessInstanceQuery

public HistoricProcessInstanceQueryImpl createHistoricProcessInstanceQuery()

createHistoricActivityInstanceQuery

public HistoricActivityInstanceQueryImpl createHistoricActivityInstanceQuery()

createHistoricTaskInstanceQuery

public HistoricTaskInstanceQueryImpl createHistoricTaskInstanceQuery()

createHistoricDetailQuery

public HistoricDetailQueryImpl createHistoricDetailQuery()

createHistoricVariableInstanceQuery

public HistoricVariableInstanceQueryImpl createHistoricVariableInstanceQuery()

getSqlSession

public org.apache.ibatis.session.SqlSession getSqlSession()

getDbSqlSessionFactory

public DbSqlSessionFactory getDbSqlSessionFactory()