org.eclipse.emf.cdo.server.db
Interface IMetaDataManager


public interface IMetaDataManager

Manages the elements of the meta model level of a CDO repository.

Since:
2.0
No Implement
This interface is not intended to be implemented by clients.
No Extend
This interface is not intended to be extended by clients.

Method Summary
 void clearMetaIDMappings()
           
 CDOID getMetaID(EModelElement modelElement, long commitTime)
          Returns the meta ID of the given EModelElement.
 EModelElement getMetaInstance(CDOID id)
          Returns the EModelElement referred to by the given ID.
 EPackage[] loadPackageUnit(Connection connection, InternalCDOPackageUnit packageUnit)
          Loads a package unit from the database.
 void rawExport(Connection connection, CDODataOutput out, long fromCommitTime, long toCommitTime)
           
 Collection<InternalCDOPackageUnit> rawImport(Connection connection, CDODataInput in, long fromCommitTime, long toCommitTime, OMMonitor monitor)
           
 Collection<InternalCDOPackageUnit> readPackageUnits(Connection connection)
          Reads information about package units present in the database.
 void writePackageUnits(Connection connection, InternalCDOPackageUnit[] packageUnits, OMMonitor monitor)
          Write package units to the database.
 

Method Detail

getMetaID

CDOID getMetaID(EModelElement modelElement,
                long commitTime)
Returns the meta ID of the given EModelElement. getMetaID(getMetaInstance(x)) yields x

Parameters:
modelElement - the element
Returns:
the corresponding ID
Since:
4.0

getMetaInstance

EModelElement getMetaInstance(CDOID id)
Returns the EModelElement referred to by the given ID. getMetaInstance(getMetaID(m)) yields m

Since:
4.0

loadPackageUnit

EPackage[] loadPackageUnit(Connection connection,
                           InternalCDOPackageUnit packageUnit)
Loads a package unit from the database.

Parameters:
connection - the DB connection to read from.
packageUnit - the package unit to load.
Returns:
the loaded package unit.
Since:
2.0

clearMetaIDMappings

void clearMetaIDMappings()
Since:
4.0

readPackageUnits

Collection<InternalCDOPackageUnit> readPackageUnits(Connection connection)
Reads information about package units present in the database.

Parameters:
connection - the DB connection to read from.
Returns:
a collection of package unit information records which can be passed to loadPackageUnit(Connection, InternalCDOPackageUnit) in order to read the EPackage.
Since:
2.0

writePackageUnits

void writePackageUnits(Connection connection,
                       InternalCDOPackageUnit[] packageUnits,
                       OMMonitor monitor)
Write package units to the database.

Parameters:
connection - the DB connection to write to.
packageUnits - the package units to write.
monitor - the monitor to indicate progress.
Since:
2.0

rawExport

void rawExport(Connection connection,
               CDODataOutput out,
               long fromCommitTime,
               long toCommitTime)
               throws IOException
Throws:
IOException
Since:
3.0

rawImport

Collection<InternalCDOPackageUnit> rawImport(Connection connection,
                                             CDODataInput in,
                                             long fromCommitTime,
                                             long toCommitTime,
                                             OMMonitor monitor)
                                             throws IOException
Throws:
IOException
Since:
4.0


Copyright (c) 2004 - 2012 Eike Stepper (Berlin, Germany) and others.