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

public interface IMetaDataManager

Since:

2.0

Method Summary

org.eclipse.net4j.db.DBType	getDBType(org.eclipse.emf.ecore.EClassifier eType) Get the DB type associated with the given EClassifier.
long	getMetaID(org.eclipse.emf.ecore.EModelElement modelElement) Returns the meta ID of the given EModelElement.
org.eclipse.emf.ecore.EModelElement	getMetaInstance(long id) Returns the EModelElement referred to by the given ID.
org.eclipse.emf.ecore.EPackage[]	loadPackageUnit(java.sql.Connection connection, InternalCDOPackageUnit packageUnit) Loads a package unit from the database.
java.util.Collection<InternalCDOPackageUnit>	readPackageUnits(java.sql.Connection connection) Reads information about package units present in the database.
void	writePackageUnits(java.sql.Connection connection, InternalCDOPackageUnit[] packageUnits, org.eclipse.net4j.util.om.monitor.OMMonitor monitor) Write package units to the database.

Method Detail

getMetaID

long getMetaID(org.eclipse.emf.ecore.EModelElement modelElement)

Returns the meta ID of the given EModelElement. getMetaID(getMetaInstance(x)) yields x

Parameters:

modelElement - the element

Returns:

the corresponding ID

Since:

2.0

getMetaInstance

org.eclipse.emf.ecore.EModelElement getMetaInstance(long id)

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

Since:

2.0

loadPackageUnit

org.eclipse.emf.ecore.EPackage[] loadPackageUnit(java.sql.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

readPackageUnits

java.util.Collection<InternalCDOPackageUnit> readPackageUnits(java.sql.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 {@link IMetaDataManager#loadPackageUnit(Connection, InternalCDOPackageUnit)) in order to read the EPackage.

Since:

2.0

writePackageUnits

void writePackageUnits(java.sql.Connection connection,
                       InternalCDOPackageUnit[] packageUnits,
                       org.eclipse.net4j.util.om.monitor.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

getDBType

org.eclipse.net4j.db.DBType getDBType(org.eclipse.emf.ecore.EClassifier eType)

Get the DB type associated with the given EClassifier.

Parameters:

eType - the type to look up.

Returns:

the DBType of the given EClassifier.

Since:

2.0