Package org.palladiosimulator.edp2.dao

Interface Edp2Dao

All Known Subinterfaces:

BinaryMeasurementsDao<V,Q>, JScienceXmlMeasurementsDao<V,Q>, LocalDirectoryRepository, LocalMemoryRepository, MeasurementsDao<V,Q>, MetaDao, MetaDaoDelegate, RemoteCdoRepository, Repository

All Known Implementing Classes:

AbstractMeasurementsDaoImpl, Edp2DaoImpl, FileBinaryMeasurementsDaoImpl, LocalDirectoryMetaDao, LocalDirectoryRepositoryImpl, LocalMemoryRepositoryImpl, MemoryBinaryMeasurementsDaoImpl, MetaDaoImpl, RemoteCdoRepositoryImpl, RepositoryImpl

public interface Edp2Dao

Generic interface for accessing any DAO in EDP2. See sub-interfaces for more specific information on meta (MetaDao) or measurement data (MeasurementsDao).

Method Summary

Modifier and Type	Method	Description
boolean	canClose()	Checks if the connection of this DAO to the data store can be closed.
boolean	canDelete()	Checks if the data managed by this DAO can be permanently deleted.
boolean	canOpen()	Checks if the data store which is accessed by this DAO is available and can be opened using open().
void	close()	Closes the connection to the data store.
void	delete()	Deletes all of the stored data.
void	flush()	Write all non-persisted data to disk.
boolean	isDeleted()	Returns if the referenced data has been deleted.
boolean	isOpen()	Returns if data is accessible or not.
void	open()	Opens the connection to the data store and makes it's data accessible.

Method Detail

open

void open()
   throws DataNotAccessibleException

Opens the connection to the data store and makes it's data accessible.

Throws:

DataNotAccessibleException - Errors when initializing the data access.

canOpen

boolean canOpen()

Checks if the data store which is accessed by this DAO is available and can be opened using open().

Returns:

true if the data store is available, false otherwise.

close

void close()
    throws DataNotAccessibleException

Closes the connection to the data store. If necessary, data is persisted before closing.

Throws:

DataNotAccessibleException - Errors when accessing data.

canClose

boolean canClose()

Checks if the connection of this DAO to the data store can be closed.

Returns:

true if it can be closed, false otherwise.

canDelete

boolean canDelete()

Checks if the data managed by this DAO can be permanently deleted.

Returns:

true if delete() can be called, false otherwise.

delete

void delete()
     throws DataNotAccessibleException

Deletes all of the stored data.

Throws:

DataNotAccessibleException - Errors when accessing data.

isOpen

boolean isOpen()

Returns if data is accessible or not.

Returns:

true if the connection is open and data is accessible.

isDeleted

boolean isDeleted()

Returns if the referenced data has been deleted.

Returns:

true if the data has been delete.

flush

void flush()

Write all non-persisted data to disk.