com.hp.hpl.mesa.rdf.jena.rdb
Class DriverGenericAttribute

java.lang.Object
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  +--com.hp.hpl.mesa.rdf.jena.rdb.DriverGenericGeneric
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        +--com.hp.hpl.mesa.rdf.jena.rdb.DriverGenericAttribute

All Implemented Interfaces:

IRDBDriver

public class DriverGenericAttribute

extends DriverGenericGeneric

Adaption of the base generic layout driver to use separate tables for specific predicates (called attributes). This version just duplicates the generic store do a replacement version if this looks useful.

Version:

$Revision: 1.2 $ on $Date: 2001/11/26 18:20:08 $

Author:

Dave Reynolds

Fields inherited from class com.hp.hpl.mesa.rdf.jena.rdb.DriverGenericGeneric

ANON_NAMESPACE

Constructor Summary

DriverGenericAttribute()
Create a bare instance of the driver.

Method Summary

void	addStatement(Statement s, ModelRDB m) Register a statement in the database.
void	cleanDB() Remove all RDF information from a database.
void	hintPropertyTable(Property p) Hint to the store that the given property could be stored as an attribute table.
ResultSetIterator	listStatements(Resource subject, Property predicate, RDFNode object, ModelRDB m) List all the statements in the model which match the given subject, predicate object - each of which can be null (meaning wildcard).

Methods inherited from class com.hp.hpl.mesa.rdf.jena.rdb.DriverGenericGeneric

allocateModelID, attachStore, close, createConstraints, deleteStatement, detachStore, formatDB, getConnection, getLiteral, getLiteralID, getModelID, getNamespace, getProperty, getProperty, getResource, getResource, getResourceID, getSQLCache, isDBFormatOK, isStatementPresent, listModels, listNamespaces, listStatements, listSubjects, loadDatabaseDriver, loadProperties, makeResource, saveProperties, setConnection, supportsMultipleModels, toString, wrapDBID, wrapFlag

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

DriverGenericAttribute

public DriverGenericAttribute()

Create a bare instance of the driver. It is not functional until a database connection has been supplied via setConnection.

Method Detail

hintPropertyTable

public void hintPropertyTable(Property p)
                       throws RDFException

Hint to the store that the given property could be stored as an attribute table.

Overrides:

hintPropertyTable in class DriverGenericGeneric

addStatement

public void addStatement(Statement s,
                         ModelRDB m)
                  throws RDFException

Register a statement in the database.

Overrides:

addStatement in class DriverGenericGeneric

Parameters:

subjId - database index of the subject entry

predId - database index of the predicate entry

objId - database index of the object entry

isLiteral - if the object is a literal rather than a resource

listStatements

public ResultSetIterator listStatements(Resource subject,
                                        Property predicate,
                                        RDFNode object,
                                        ModelRDB m)
                                 throws RDFException

List all the statements in the model which match the given subject, predicate object - each of which can be null (meaning wildcard).

Overrides:

listStatements in class DriverGenericGeneric

cleanDB

public void cleanDB()

Remove all RDF information from a database. This will only work if there are no other clients us the DB so is mostly to simplify testing that a practical tool. Partial DB config or cleaning can leave the DB in a strange state hence it will continue with each cleanup phase even if earlier phases have generated errors and erros are only logged, not propagated as exceptions.

Overrides:

cleanDB in class DriverGenericGeneric