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Java Source Code / Java Documentation » J2EE » Enhydra Application Framework » com.lutris.appserver.server.sql

Source Cross Reference Class Diagram Java Document (Java Doc)

com.lutris.appserver.server.sql .LogicalDatabase

LogicalDatabase
public interface LogicalDatabase (Code)
	Interface for a logical database. Each logical database must provide services for connection and object id allocation. author: Paul Morgan since: LBS1.8 version: $Revision: 1.1 $

Method Summary
public DBConnection	allocateConnection() Return a connection to this logical database.
public ObjectId	allocateObjectId() Return an object id for this logical database.
public void	checkOId(ObjectId oid)
public DBQuery	createQuery() Return a query for use on this logical database.
public DBTransaction	createTransaction() Return a transaction for use on this logical database.
public int	getActiveConnectionCount() Return the number of currently active connections.
public int	getMaxConnectionCount() Return the maximum number of connections active at one time.
public Date	getMaxConnectionCountDate() Return the time when the maximum connection count occured.
public String	getName() Return the symbolic name of this logical database.
public long	getRequestCount() Return the number of database requests.
public String	getType() Return a description of the logical database type.
public void	init(String dbName, Config dbConfig) Initialize the logical database.
public void	resetMaxConnectionCount() Reset the maximum connection count and date.
public void	shutdown() Immediately shutdown the logical database.

Method Detail

allocateConnection
public DBConnection allocateConnection() throws SQLException(Code)
	Return a connection to this logical database. The connection. exception: SQLException - if a SQL error occurs.

allocateObjectId
public ObjectId allocateObjectId() throws ObjectIdException(Code)
	Return an object id for this logical database. The object id. exception: ObjectIdException - if an object id cannot be allocated.

checkOId
public void checkOId(ObjectId oid) throws ObjectIdException(Code)
	Check does oid belong to Object id's range [minOId, currentOId] Parameters: oid - oid which will be checked. exception: ObjectIdException - If a oid does't belong to range.

createQuery
public DBQuery createQuery() throws SQLException(Code)
	Return a query for use on this logical database. The query object. exception: SQLException - if a SQL error occurs.

createTransaction
public DBTransaction createTransaction() throws SQLException(Code)
	Return a transaction for use on this logical database. The transaction object. exception: SQLException - if a SQL error occurs.

getActiveConnectionCount
public int getActiveConnectionCount()(Code)
	Return the number of currently active connections. The number of connections.

getMaxConnectionCount
public int getMaxConnectionCount()(Code)
	Return the maximum number of connections active at one time. The number of connections.

getMaxConnectionCountDate
public Date getMaxConnectionCountDate()(Code)
	Return the time when the maximum connection count occured. The `Date` when the maximum connectioncount occured.

getName
public String getName()(Code)
	Return the symbolic name of this logical database. The symbolic name.

getRequestCount
public long getRequestCount()(Code)
	Return the number of database requests. The number of database requests (queries or transactions).

getType
public String getType()(Code)
	Return a description of the logical database type. The type.

init
public void init(String dbName, Config dbConfig) throws ConfigException, SQLException(Code)
	Initialize the logical database. exception: ConfigException - if there is an error in the configuration. exception: SQLException - if a SQL error occurs.

resetMaxConnectionCount
public void resetMaxConnectionCount()(Code)
	Reset the maximum connection count and date.

shutdown
public void shutdown()(Code)
	Immediately shutdown the logical database. All connections should be closed and any other cleanup performed.

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