com.hp.hpl.mesa.rdf.jena.rdb
Interface IConstraints

All Known Implementing Classes:

ConstraintsGeneric

public interface IConstraints

Interface for objects which apply a set of additional constraints to a listStatements operation. These are generated by factory methods on the driver IRDBDriver.createConstraints(com.hp.hpl.mesa.rdf.jena.rdb.ModelRDB) since different database layouts may require different constraint implementations.

Version:

$Revision: 1.2 $ on $Date: 2001/11/26 18:20:09 $

Author:

Dave Reynolds

Method Summary

IConstraints	addIntConstraint(java.lang.String op, int constraint) Add a constraint that the object field should match the given integer literal using the sql comparison operator op - examples include "≥" and "≤=".
IConstraints	addObjectConstraint(Literal l) Add a constraint that the object field should match the given literal exactly
IConstraints	addObjectConstraint(Resource r) Add a constraint that the object field should match the given resource
IConstraints	addPropertyConstraint(Resource r) Add a constraint that the property field should match the given resource
IConstraints	addStringConstraint(java.lang.String op, java.lang.String constraint) Add a constraint that the object field should match the given string literal using the sql comparison operator op - such as "LIKE" or "NOT LIKE"
IConstraints	addSubjectConstraint(Resource r) Add a constraint that the subject field should match the given resource
IConstraints	reset() Clear all constraints
ResultSetIterator	runQuery(IRDBDriver driver, ModelRDB m) Execute the query implied by this set of constraints against the statements in the given model.

Method Detail

addSubjectConstraint

public IConstraints addSubjectConstraint(Resource r)
                                  throws RDFException

Add a constraint that the subject field should match the given resource

addPropertyConstraint

public IConstraints addPropertyConstraint(Resource r)
                                   throws RDFException

Add a constraint that the property field should match the given resource

addObjectConstraint

public IConstraints addObjectConstraint(Resource r)
                                 throws RDFException

Add a constraint that the object field should match the given resource

addObjectConstraint

public IConstraints addObjectConstraint(Literal l)
                                 throws RDFException

Add a constraint that the object field should match the given literal exactly

addStringConstraint

public IConstraints addStringConstraint(java.lang.String op,
                                        java.lang.String constraint)

Add a constraint that the object field should match the given string literal using the sql comparison operator op - such as "LIKE" or "NOT LIKE"

addIntConstraint

public IConstraints addIntConstraint(java.lang.String op,
                                     int constraint)

Add a constraint that the object field should match the given integer literal using the sql comparison operator op - examples include "≥" and "≤=".

reset

public IConstraints reset()

Clear all constraints

runQuery

public ResultSetIterator runQuery(IRDBDriver driver,
                                  ModelRDB m)
                           throws RDFException

Execute the query implied by this set of constraints against the statements in the given model.