org.openanzo.server.repository.querybuilder
Class RdbGraph

java.lang.Object
  org.openanzo.server.repository.querybuilder.RdbGraph

Direct Known Subclasses:

StatementSubGraph

public class RdbGraph
extends java.lang.Object

Provides RDF graph access to data stored in a relational database. ResourceGroundings and PropertyGroundings define the mapping between RDF Statements and relational tables and columns. The LiteralGrounding class provides types to match with the types of the relational elements.

Author:

Joe Betz

Constructor Summary

RdbGraph(SubjectGrounding... groundings)
Create a new RdbGraph with given SubjectGroundings

Method Summary

void	addResourceGrounding(SubjectGrounding resourceGrounding) Add a SubjectGrounding to this graph
java.util.Collection<Quad>	findQuads(RepositoryConnection repositoryConnection, org.openrdf.model.Resource subj, org.openrdf.model.URI prop, org.openrdf.model.Value obj, java.lang.Long graphId, boolean includeInferredStatements, java.util.Map<java.lang.String,java.lang.Object> variables) Find the quads in this graph that match the statement pattern

Methods inherited from class java.lang.Object

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

Constructor Detail

RdbGraph

public RdbGraph(SubjectGrounding... groundings)

Create a new RdbGraph with given SubjectGroundings

Parameters:

groundings - Set of groundings for this graph

Method Detail

addResourceGrounding

public void addResourceGrounding(SubjectGrounding resourceGrounding)

Add a SubjectGrounding to this graph

Parameters:

resourceGrounding - SubjectGrounding to add

findQuads

public java.util.Collection<Quad> findQuads(RepositoryConnection repositoryConnection,
                                            org.openrdf.model.Resource subj,
                                            org.openrdf.model.URI prop,
                                            org.openrdf.model.Value obj,
                                            java.lang.Long graphId,
                                            boolean includeInferredStatements,
                                            java.util.Map<java.lang.String,java.lang.Object> variables)
                                     throws AnzoException

Find the quads in this graph that match the statement pattern

Parameters:

repositoryConnection - connection to the database

subj - subject to match, or wildcard if null

prop - property to match, or wildcard if null

obj - property to match,or wildcard if null

graphId - ID of namedgraph's URI

includeInferredStatements - include inferred statements

variables - map of variables and values that can be used in the queries

Returns:

quads in this graph that match the statement pattern

Throws:

AnzoException