IMetaDataManager (CDO Model Repository Documentation)

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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