org.eclipse.persistence.internal.databaseaccess.Platform Maven / Gradle / Ivy
/*
* Copyright (c) 1998, 2022 Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2019 IBM Corporation. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0,
* or the Eclipse Distribution License v. 1.0 which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
*/
// Contributors:
// Oracle - initial API and implementation from Oracle TopLink
package org.eclipse.persistence.internal.databaseaccess;
import java.io.Serializable;
import java.io.Writer;
import java.util.Collections;
import java.util.Map;
import java.util.Properties;
import java.util.Set;
import org.eclipse.persistence.exceptions.ConversionException;
import org.eclipse.persistence.internal.core.databaseaccess.CorePlatform;
import org.eclipse.persistence.internal.helper.ConversionManager;
import org.eclipse.persistence.internal.helper.DatabaseField;
import org.eclipse.persistence.internal.sessions.AbstractSession;
import org.eclipse.persistence.queries.Call;
import org.eclipse.persistence.queries.ValueReadQuery;
import org.eclipse.persistence.sequencing.Sequence;
import org.eclipse.persistence.sessions.Session;
/**
* Platform is private to TopLink. It encapsulates behavior specific to a datasource platform
* (eg. Oracle, Sybase, DB2, Attunity, MQSeries), and provides the interface for TopLink to access this behavior.
*
* @see DatasourcePlatform
* @see DatabasePlatform
* @see org.eclipse.persistence.eis.EISPlatform
*
* @since OracleAS TopLink 10g (10.0.3)
*/
public interface Platform extends CorePlatform, Serializable, Cloneable {
Object clone();
/**
* Convert the object to the appropriate type by invoking the appropriate
* ConversionManager method
* @param sourceObject the object that must be converted
* @param javaClass the class that the object must be converted to
* @exception ConversionException all exceptions will be thrown as this type.
* @return the newly converted object
*/
@Override T convertObject(Object sourceObject, Class javaClass) throws ConversionException;
/**
* Copy the state into the new platform.
*/
void copyInto(Platform platform);
/**
* The platform hold its own instance of conversion manager to allow customization.
*/
@Override ConversionManager getConversionManager();
/**
* The platform hold its own instance of conversion manager to allow customization.
*/
void setConversionManager(ConversionManager conversionManager);
/**
* Return the qualifier for the table. Required by some
* databases such as Oracle and DB2
*/
String getTableQualifier();
/**
* Answer the timestamp from the server.
*/
java.sql.Timestamp getTimestampFromServer(AbstractSession session, String sessionName);
/**
* This method can be overridden by subclasses to return a
* query that will return the timestamp from the server.
* return null if the time should be the local time.
*/
ValueReadQuery getTimestampQuery();
/**
* This method can be overridden by subclasses to return a
* query that will return the UUID from the server.
* return null if UUID generation is not available at the server.
*/
ValueReadQuery getUUIDQuery();
boolean isH2();
boolean isAccess();
boolean isAttunity();
boolean isCloudscape();
boolean isDerby();
boolean isDB2();
boolean isDB2Z();
boolean isDBase();
boolean isHANA();
boolean isHSQL();
boolean isInformix();
boolean isMaxDB();
boolean isMariaDB();
boolean isMySQL();
boolean isODBC();
boolean isOracle();
boolean isOracle9();
boolean isOracle12();
boolean isPointBase();
boolean isSQLAnywhere();
boolean isSQLServer();
boolean isSybase();
boolean isSymfoware();
boolean isTimesTen();
boolean isTimesTen7();
boolean isPostgreSQL();
/**
* Allow the platform to initialize itself after login/init.
*/
void initialize();
/**
* Set the qualifier for the table. Required by some
* databases such as Oracle and DB2
*/
void setTableQualifier(String qualifier);
/**
* Can override the default query for returning a timestamp from the server.
* See: getTimestampFromServer
*/
void setTimestampQuery(ValueReadQuery tsQuery);
/**
* Can override the default query for returning a UUID from the server.
*/
void setUUIDQuery(ValueReadQuery uuidQuery);
/**
* Add the parameter.
* Convert the parameter to a string and write it.
*/
void appendParameter(Call call, Writer writer, Object parameter);
/**
* Allow for the platform to handle the representation of parameters specially.
*/
Object getCustomModifyValueForCall(Call call, Object value, DatabaseField field, boolean shouldBind);
/**
* Delimiter to use for fields and tables using spaces or other special values.
*
* Some databases use different delimiters for the beginning and end of the value.
* This delimiter indicates the end of the value.
*/
String getEndDelimiter();
/**
* Delimiter to use for fields and tables using spaces or other special values.
*
* Some databases use different delimiters for the beginning and end of the value.
* This delimiter indicates the start of the value.
*/
String getStartDelimiter();
/**
* Allow for the platform to handle the representation of parameters specially.
*/
boolean shouldUseCustomModifyForCall(DatabaseField field);
/**
* Get default sequence.
* Sequence name shouldn't be altered -
* don't do: getDefaultSequence().setName(newName).
*/
Sequence getDefaultSequence();
/**
* Set default sequence.
* The sequence should have a unique name
* that shouldn't be altered after the sequence has been set:
* don't do: getDefaultSequence().setName(newName)).
* Default constructors for Sequence subclasses
* set name to "SEQ".
*/
void setDefaultSequence(Sequence sequence);
/**
* Add sequence.
* The sequence should have a unique name
* that shouldn't be altered after the sequence has been added -
* don't do: getSequence(name).setName(newName))
* Don't use if the session is connected.
*/
void addSequence(Sequence sequence);
/**
* Add sequence.
* The sequence should have a unique name
* that shouldn't be altered after the sequence has been added -
* don't do: getSequence(name).setName(newName))
* Use this method with isConnected parameter set to true
* to add a sequence to connected session.
* If sequencing is connected then the sequence is added only
* if there is no sequence with the same name already in use.
*/
void addSequence(Sequence sequence, boolean isConnected);
/**
* Get sequence corresponding to the name.
* The name shouldn't be altered -
* don't do: getSequence(name).setName(newName)
*/
Sequence getSequence(String seqName);
/**
* Remove sequence corresponding to the name
* (the sequence was added through addSequence method)
* Don't use if the session is connected.
*/
Sequence removeSequence(String seqName);
/**
* Remove all sequences that were added through addSequence method.
*/
void removeAllSequences();
/**
* INTERNAL:
* Returns a map of sequence names to Sequences (may be null).
*/
Map getSequences();
/**
* INTERNAL:
* Used only for writing into XML or Java.
*/
Map getSequencesToWrite();
/**
* INTERNAL:
* Used only for writing into XML or Java.
*/
Sequence getDefaultSequenceToWrite();
/**
* INTERNAL:
* Used only for reading from XML.
*/
void setSequences(Map sequences);
/**
* INTERNAL:
* Indicates whether defaultSequence is the same as platform default sequence.
*/
boolean usesPlatformDefaultSequence();
/**
* INTERNAL:
* Initialize platform specific identity sequences.
* This method is called from {@code EntityManagerSetupImpl} after login and optional schema generation.
* Method is also called from {@code TableCreator} class during tables creation and update..
* @param session Active database session (in connected state).
* @param defaultIdentityGenerator Default identity generator sequence name.
* @since 2.7
*/
void initIdentitySequences(final Session session, final String defaultIdentityGenerator);
/**
* INTERNAL:
* Remove platform specific identity sequences for specified tables. Default identity sequences are restored.
* Method is also called from {@code TableCreator} class during tables removal.
* @param session Active database session (in connected state).
* @param defaultIdentityGenerator Default identity generator sequence name.
* @param tableNames Set of table names to check for identity sequence removal.
* @since 2.7
*/
void removeIdentitySequences(
final Session session, final String defaultIdentityGenerator, final Set tableNames);
/**
* INTERNAL:
* Get platform specific connection properties.
* @return properties to be added to connection properties
*/
default Map connectionProperties() {
return Collections.emptyMap();
}
}