net.ontopia.persistence.proxy

Class RDBMSStorage

java.lang.Object

net.ontopia.persistence.proxy.RDBMSStorage

All Implemented Interfaces:

StorageIF

public class RDBMSStorage
extends Object
implements StorageIF

INTERNAL: A storage definition implementation for relational databases.

Field Summary

Fields

Modifier and Type	Field and Description
static Set<String>	known_properties
protected Map<IdentityIF,Map<String,EvictableIF>>	qcmap

Constructor Summary

Constructors

Constructor and Description
RDBMSStorage() INTERNAL: Creates a storage definition which gets its settings from system variables.
RDBMSStorage(Map<String,String> properties) INTERNAL: Creates a storage definition that reads its settings from the specified properties.
RDBMSStorage(String propfile) INTERNAL: Creates a storage definition that reads its settings from the specified property file.

Method Summary

Modifier and Type	Method and Description
void	clearCache()
void	clearCache(IdentityIF namespace)
void	close() INTERNAL: Closes the storage definition, which allows it to free its resources.
StorageAccessIF	createAccess(boolean readonly)
QueryIF	createQuery(JDOQuery jdoquery, RDBMSAccess access, ObjectAccessIF oaccess, AccessRegistrarIF registrar, boolean lookup_identities)
QueryIF	createQuery(String name, RDBMSAccess access, ObjectAccessIF oaccess, AccessRegistrarIF registrar)
TransactionIF	createTransaction(boolean readonly) INTERNAL: Creates a new storage access instance.
IdentityIF	generateIdentity(Class<?> type)
int	getActiveTransactionCount()
ConnectionFactoryIF	getConnectionFactory(boolean readonly)
String	getDatabase() INTERNAL: Returns the database type.
EvictableIF	getHelperObject(int identifier, IdentityIF namespace) INTERNAL: Returns the shared caches.
protected InputStream	getInputStream(String property, String filename)
RDBMSMapping	getMapping() INTERNAL: Returns the optimized object relational mapping declaration.
protected Connection	getNonTransactionalReadConnection()
String[]	getPlatforms() INTERNAL: Returns the database platforms.
Map<String,String>	getProperties() INTERNAL: Gets the properties held by the storage.
String	getProperty(String property) INTERNAL: Gets the value of the specified storage property.
String	getProperty(String property, String default_value)
QueryDeclarations	getQueryDeclarations()
protected QueryDescriptor	getQueryDescriptor(String name)
String	getQueryString(String name)
SQLGeneratorIF	getSQLGenerator()
StorageCacheIF	getStorageCache() INTERNAL: Returns the shared storage cache, if any.
Set<AbstractTransaction>	getTransactions() INTERNAL: exposes the set of active transactions.
protected void	init(Map<String,String> properties) INTERNAL: Method shared by constructors to properly initialize members.
boolean	isSharedCache() INTERNAL: Returns true if shared cache is enabled.
void	notifyCluster() INTERNAL: Notify cluster that transaction has been committed, so that batched cluster events can be broadcasted.
void	objectMerged(IdentityIF source, IdentityIF target, AbstractTransaction cause) INTERNAL: Propagates committed merges to other active transactions.
protected void	touch(Connection connection)
protected void	transactionClosed(AbstractTransaction transaction)
void	writeReport(Writer out, TopicMapReferenceIF reference, IdentityIF namespace, boolean dumpCaches)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

known_properties

public static final Set<String> known_properties

qcmap

protected Map<IdentityIF,Map<String,EvictableIF>> qcmap

Constructor Detail

RDBMSStorage

public RDBMSStorage()
             throws IOException

INTERNAL: Creates a storage definition which gets its settings from system variables.

Throws:

IOException

RDBMSStorage

public RDBMSStorage(String propfile)
             throws IOException

INTERNAL: Creates a storage definition that reads its settings from the specified property file.

Throws:

IOException

RDBMSStorage

public RDBMSStorage(Map<String,String> properties)
             throws IOException

INTERNAL: Creates a storage definition that reads its settings from the specified properties.

Throws:

IOException

Since:

1.2.4

Method Detail

getInputStream

protected InputStream getInputStream(String property,
                                     String filename)
                              throws IOException

Throws:

IOException

init

protected void init(Map<String,String> properties)
             throws IOException

INTERNAL: Method shared by constructors to properly initialize members.

Throws:

IOException

getMapping

public RDBMSMapping getMapping()

Description copied from interface: StorageIF

INTERNAL: Returns the optimized object relational mapping declaration.

Specified by:

getMapping in interface StorageIF

getQueryDeclarations

public QueryDeclarations getQueryDeclarations()

generateIdentity

public IdentityIF generateIdentity(Class<?> type)

getProperties

public Map<String,String> getProperties()

Description copied from interface: StorageIF

INTERNAL: Gets the properties held by the storage.

Specified by:

getProperties in interface StorageIF

getProperty

public String getProperty(String property)

Description copied from interface: StorageIF

INTERNAL: Gets the value of the specified storage property.

Specified by:

getProperty in interface StorageIF

getProperty

public String getProperty(String property,
                          String default_value)

createAccess

public StorageAccessIF createAccess(boolean readonly)

createTransaction

public TransactionIF createTransaction(boolean readonly)

Description copied from interface: StorageIF

INTERNAL: Creates a new storage access instance.

Specified by:

createTransaction in interface StorageIF

isSharedCache

public boolean isSharedCache()

Description copied from interface: StorageIF

INTERNAL: Returns true if shared cache is enabled.

Specified by:

isSharedCache in interface StorageIF

getStorageCache

public StorageCacheIF getStorageCache()

Description copied from interface: StorageIF

INTERNAL: Returns the shared storage cache, if any.

Specified by:

getStorageCache in interface StorageIF

getDatabase

public String getDatabase()

INTERNAL: Returns the database type.

getPlatforms

public String[] getPlatforms()

INTERNAL: Returns the database platforms.

close

public void close()

Description copied from interface: StorageIF

INTERNAL: Closes the storage definition, which allows it to free its resources.

Specified by:

close in interface StorageIF

notifyCluster

public void notifyCluster()

Description copied from interface: StorageIF

INTERNAL: Notify cluster that transaction has been committed, so that batched cluster events can be broadcasted.

Specified by:

notifyCluster in interface StorageIF

getHelperObject

public EvictableIF getHelperObject(int identifier,
                                   IdentityIF namespace)

Description copied from interface: StorageIF

INTERNAL: Returns the shared caches.

Specified by:

getHelperObject in interface StorageIF

getQueryString

public String getQueryString(String name)

getQueryDescriptor

protected QueryDescriptor getQueryDescriptor(String name)

createQuery

public QueryIF createQuery(String name,
                           RDBMSAccess access,
                           ObjectAccessIF oaccess,
                           AccessRegistrarIF registrar)

createQuery

public QueryIF createQuery(JDOQuery jdoquery,
                           RDBMSAccess access,
                           ObjectAccessIF oaccess,
                           AccessRegistrarIF registrar,
                           boolean lookup_identities)

getSQLGenerator

public SQLGeneratorIF getSQLGenerator()

getConnectionFactory

public ConnectionFactoryIF getConnectionFactory(boolean readonly)

clearCache

public void clearCache()

clearCache

public void clearCache(IdentityIF namespace)

writeReport

public void writeReport(Writer out,
                        TopicMapReferenceIF reference,
                        IdentityIF namespace,
                        boolean dumpCaches)
                 throws IOException

Throws:

IOException

objectMerged

public void objectMerged(IdentityIF source,
                         IdentityIF target,
                         AbstractTransaction cause)

INTERNAL: Propagates committed merges to other active transactions.

Parameters:

source - Identity of the merge source object

target - Identity of the merge target object

cause - The transaction that committed the merge

Since:

5.4.0

getActiveTransactionCount

public int getActiveTransactionCount()

transactionClosed

protected void transactionClosed(AbstractTransaction transaction)

getTransactions

public Set<AbstractTransaction> getTransactions()

INTERNAL: exposes the set of active transactions.

Since:

5.4.0

getNonTransactionalReadConnection

protected Connection getNonTransactionalReadConnection()

touch

protected void touch(Connection connection)