Oracle rdf protege plugin and owl

Does the oracle rdf plugin for protege support writing owl files into oracle rdf storage backend? I tried saving a new protege owl project, and get stack dumps (see below).
Thanks
In saveKnowledgeBase 1
java.sql.SQLException: Io exception: The Network Adapter could not establish the
connection
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java
:100)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java
:130)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java
:215)
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:378)
at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:
434)
at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:165)
at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtensio
n.java:31)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:772)
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at oracle.ORDFFrameCreator.finish(ORDFFrameCreator.java:349)
at edu.stanford.smi.protegex.storage.walker.protege.ProtegeFrameWalker.w
alk(Unknown Source)
at oracle.OKnowledgeBaseFactory.saveKnowledgeBase(OKnowledgeBaseFactory.
java:177)
at oracle.OImportExportPlugin.exportProject(OImportExportPlugin.java:124
at oracle.OImportExportPlugin.handleExportRequest(OImportExportPlugin.ja
va:109)
at edu.stanford.smi.protege.ui.ProjectManager.exportProjectRequest(Unkno
wn Source)
at edu.stanford.smi.protege.action.ExportPluginAction.actionPerformed(Un
known Source)
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
at javax.swing.AbstractButton.doClick(Unknown Source)
at javax.swing.plaf.basic.BasicMenuItemUI.doClick(Unknown Source)
at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(Unknown
Source)
at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
null : : : http://www.w3.org/1999/02/22-rdf-syntax-ns#type : http://protege.stan
ford.edu/system#owl_ontology
java.lang.NullPointerException
at oracle.ORDFFrameCreator.finish(ORDFFrameCreator.java:403)
at edu.stanford.smi.protegex.storage.walker.protege.ProtegeFrameWalker.w
alk(Unknown Source)
at oracle.OKnowledgeBaseFactory.saveKnowledgeBase(OKnowledgeBaseFactory.
java:177)
at oracle.OImportExportPlugin.exportProject(OImportExportPlugin.java:124
at oracle.OImportExportPlugin.handleExportRequest(OImportExportPlugin.ja
va:109)
at edu.stanford.smi.protege.ui.ProjectManager.exportProjectRequest(Unkno
wn Source)
at edu.stanford.smi.protege.action.ExportPluginAction.actionPerformed(Un
known Source)
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
at javax.swing.AbstractButton.doClick(Unknown Source)
at javax.swing.plaf.basic.BasicMenuItemUI.doClick(Unknown Source)
at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(Unknown
Source)
at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
WARNING: java.lang.NullPointerException -- OImportExportPlugin.handleErrors()

dlrubin
did you ever figure out your problem? I'm having the same error.
java.sql.SQLException: Io exception: The Network Adapter could not establish the
connection
Not 100% sure where my error is coming from, if its a classpath issue or something else. Just wanted to see if you came up with a solution. Thanks

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Thanks,
A.

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Email: [email protected] .
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Hi
From the Protege Plugin, I've installed a simple Ontology for testing on Oracle 11g, I've added a few individuals to the database with no problem at all, though I can't see the inference on the database!!.
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This snippet is part of the client to perform the inference.
Oracle oracle = new Oracle("jdbc:oracle:thin:@161.x.y.z:1521:NTCSHIST", "user", "password");
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Cheers

<?xml version="1.0"?>
<!DOCTYPE rdf:RDF [
    <!ENTITY owl "http://www.w3.org/2002/07/owl#" >
    <!ENTITY xsd "http://www.w3.org/2001/XMLSchema#" >
    <!ENTITY geosparql "http://www.opengis.net/ont/geosparql#" >
    <!ENTITY rdfs "http://www.w3.org/2000/01/rdf-schema#" >
    <!ENTITY rdf "http://www.w3.org/1999/02/22-rdf-syntax-ns#" >
    <!ENTITY starguidecatalog "http://www.tng.iac.es/ontologies/2014/6/starguidecatalog#" >
]>
<rdf:RDF xmlns="http://www.tng.iac.es/ontologies/2014/6/starguidecatalog#"
    xml:base="http://www.tng.iac.es/ontologies/2014/6/starguidecatalog"
    xmlns:geosparql="http://www.opengis.net/ont/geosparql#"
    xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
    xmlns:owl="http://www.w3.org/2002/07/owl#"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema#"
    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
    xmlns:starguidecatalog="http://www.tng.iac.es/ontologies/2014/6/starguidecatalog#">
    <owl:Ontology rdf:about="http://www.tng.iac.es/ontologies/2014/6/starguidecatalog">
        <owl:imports rdf:resource="http://www.opengis.net/ont/geosparql"/>
        <owl:imports rdf:resource="http://www.opengis.net/ont/sf"/>
    </owl:Ontology>
    
    
    <owl:ObjectProperty rdf:about="&starguidecatalog;border">
        <rdf:type rdf:resource="&owl;SymmetricProperty"/>
        <rdfs:domain rdf:resource="&starguidecatalog;Tile"/>
        <rdfs:range rdf:resource="&starguidecatalog;Tile"/>
        <owl:inverseOf rdf:resource="&starguidecatalog;border"/>
    </owl:ObjectProperty>
    
    <owl:ObjectProperty rdf:about="&starguidecatalog;hasPointGeometry">
        <rdf:type rdf:resource="&owl;FunctionalProperty"/>
        <rdfs:subPropertyOf rdf:resource="&geosparql;hasGeometry"/>
        <rdfs:range rdf:resource="http://www.opengis.net/ont/sf#Point"/>
        <rdfs:domain rdf:resource="&starguidecatalog;AstronomicalObject"/>
    </owl:ObjectProperty>
    
    <owl:ObjectProperty rdf:about="&starguidecatalog;insideOf">
        <rdf:type rdf:resource="&owl;FunctionalProperty"/>
        <rdfs:domain rdf:resource="&starguidecatalog;AstronomicalObject"/>
        <rdfs:range rdf:resource="&starguidecatalog;Tile"/>
    </owl:ObjectProperty>
    
    
    <owl:DatatypeProperty rdf:about="&starguidecatalog;astroClass">
        <rdf:type rdf:resource="&owl;FunctionalProperty"/>
        <rdfs:domain rdf:resource="&starguidecatalog;AstronomicalObject"/>
        <rdfs:subPropertyOf rdf:resource="&starguidecatalog;targetInfo"/>
        <rdfs:range rdf:resource="&xsd;float"/>
    </owl:DatatypeProperty>
    
    <owl:DatatypeProperty rdf:about="&starguidecatalog;coordinates">
        <rdfs:subPropertyOf rdf:resource="&starguidecatalog;targetInfo"/>
    </owl:DatatypeProperty>
    
    <owl:DatatypeProperty rdf:about="&starguidecatalog;dec">
        <rdf:type rdf:resource="&owl;FunctionalProperty"/>
        <rdfs:domain rdf:resource="&starguidecatalog;AstronomicalObject"/>
        <rdfs:subPropertyOf rdf:resource="&starguidecatalog;coordinates"/>
        <rdfs:range rdf:resource="&xsd;float"/>
    </owl:DatatypeProperty>
    
    <owl:DatatypeProperty rdf:about="&starguidecatalog;epoch">
        <rdf:type rdf:resource="&owl;FunctionalProperty"/>
        <rdfs:domain rdf:resource="&starguidecatalog;AstronomicalObject"/>
        <rdfs:subPropertyOf rdf:resource="&starguidecatalog;targetInfo"/>
        <rdfs:range rdf:resource="&xsd;integer"/>
    </owl:DatatypeProperty>
    
    <owl:DatatypeProperty rdf:about="&starguidecatalog;f">
        <rdf:type rdf:resource="&owl;FunctionalProperty"/>
        <rdfs:subPropertyOf rdf:resource="&starguidecatalog;magnitude"/>
    </owl:DatatypeProperty>
    
    <owl:DatatypeProperty rdf:about="&starguidecatalog;id">
        <rdf:type rdf:resource="&owl;FunctionalProperty"/>
        <rdfs:domain rdf:resource="&starguidecatalog;AstronomicalObject"/>
        <rdfs:subPropertyOf rdf:resource="&starguidecatalog;targetInfo"/>
        <rdfs:range rdf:resource="&xsd;integer"/>
    </owl:DatatypeProperty>
    
    <owl:DatatypeProperty rdf:about="&starguidecatalog;j">
        <rdf:type rdf:resource="&owl;FunctionalProperty"/>
        <rdfs:subPropertyOf rdf:resource="&starguidecatalog;magnitude"/>
    </owl:DatatypeProperty>
    
    <owl:DatatypeProperty rdf:about="&starguidecatalog;magnitude">
        <rdfs:domain rdf:resource="&starguidecatalog;AstronomicalObject"/>
        <rdfs:subPropertyOf rdf:resource="&starguidecatalog;targetInfo"/>
        <rdfs:range rdf:resource="&xsd;float"/>
    </owl:DatatypeProperty>
    
    <owl:DatatypeProperty rdf:about="&starguidecatalog;n">
        <rdf:type rdf:resource="&owl;FunctionalProperty"/>
        <rdfs:subPropertyOf rdf:resource="&starguidecatalog;magnitude"/>
    </owl:DatatypeProperty>
    
    <owl:DatatypeProperty rdf:about="&starguidecatalog;ra">
        <rdf:type rdf:resource="&owl;FunctionalProperty"/>
        <rdfs:domain rdf:resource="&starguidecatalog;AstronomicalObject"/>
        <rdfs:subPropertyOf rdf:resource="&starguidecatalog;coordinates"/>
        <rdfs:range rdf:resource="&xsd;float"/>
    </owl:DatatypeProperty>
    
    <owl:DatatypeProperty rdf:about="&starguidecatalog;targetInfo">
        <owl:propertyDisjointWith rdf:resource="&starguidecatalog;tileInfo"/>
    </owl:DatatypeProperty>
    
    <owl:DatatypeProperty rdf:about="&starguidecatalog;tileInfo">
        <rdfs:domain rdf:resource="&starguidecatalog;Tile"/>
        <rdfs:range rdf:resource="&xsd;float"/>
    </owl:DatatypeProperty>
    
    <owl:DatatypeProperty rdf:about="&starguidecatalog;v">
        <rdf:type rdf:resource="&owl;FunctionalProperty"/>
        <rdfs:subPropertyOf rdf:resource="&starguidecatalog;magnitude"/>
    </owl:DatatypeProperty>
    
    
    <owl:Class rdf:about="&starguidecatalog;AstronomicalCoordinate">
        <rdfs:subClassOf rdf:resource="http://www.opengis.net/ont/sf#Point"/>
        <rdfs:subClassOf rdf:resource="&starguidecatalog;Sky"/>
        <rdfs:subClassOf>
            <owl:Restriction>
                <owl:onProperty rdf:resource="&starguidecatalog;hasPointGeometry"/>
                <owl:allValuesFrom rdf:resource="http://www.opengis.net/ont/sf#Point"/>
            </owl:Restriction>
        </rdfs:subClassOf>
    </owl:Class>
    
    <owl:Class rdf:about="&starguidecatalog;AstronomicalObject">
        <owl:equivalentClass>
            <owl:Class>
                <owl:unionOf rdf:parseType="Collection">
                    <rdf:Description rdf:about="&starguidecatalog;Galaxy"/>
                    <rdf:Description rdf:about="&starguidecatalog;Star"/>
                    <rdf:Description rdf:about="&starguidecatalog;Supernova"/>
                </owl:unionOf>
            </owl:Class>
        </owl:equivalentClass>
        <rdfs:subClassOf rdf:resource="&starguidecatalog;Sky"/>
        <rdfs:subClassOf>
            <owl:Restriction>
                <owl:onProperty rdf:resource="&starguidecatalog;hasPointGeometry"/>
                <owl:allValuesFrom rdf:resource="http://www.opengis.net/ont/sf#Point"/>
            </owl:Restriction>
        </rdfs:subClassOf>
    </owl:Class>
    
    <owl:Class rdf:about="&starguidecatalog;Galaxy">
        <owl:equivalentClass>
            <owl:Class>
                <owl:intersectionOf rdf:parseType="Collection">
                    <rdf:Description rdf:about="&starguidecatalog;AstronomicalObject"/>
                    <owl:Restriction>
                        <owl:onProperty rdf:resource="&starguidecatalog;astroClass"/>
                        <owl:hasValue rdf:datatype="&xsd;float">3.0</owl:hasValue>
                    </owl:Restriction>
                </owl:intersectionOf>
            </owl:Class>
        </owl:equivalentClass>
        <rdfs:subClassOf rdf:resource="&starguidecatalog;AstronomicalObject"/>
        <rdfs:subClassOf>
            <owl:Restriction>
                <owl:onProperty rdf:resource="&starguidecatalog;border"/>
                <owl:allValuesFrom rdf:resource="&starguidecatalog;Tile"/>
            </owl:Restriction>
        </rdfs:subClassOf>
        <owl:disjointWith rdf:resource="&starguidecatalog;Star"/>
        <owl:disjointWith rdf:resource="&starguidecatalog;Supernova"/>
    </owl:Class>
    
    <owl:Class rdf:about="&starguidecatalog;Sky"/>
    
    <owl:Class rdf:about="&starguidecatalog;Star">
        <owl:equivalentClass>
            <owl:Class>
                <owl:intersectionOf rdf:parseType="Collection">
                    <rdf:Description rdf:about="&starguidecatalog;AstronomicalObject"/>
                    <owl:Restriction>
                        <owl:onProperty rdf:resource="&starguidecatalog;astroClass"/>
                        <owl:hasValue rdf:datatype="&xsd;float">2.0</owl:hasValue>
                    </owl:Restriction>
                </owl:intersectionOf>
            </owl:Class>
        </owl:equivalentClass>
        <rdfs:subClassOf rdf:resource="&starguidecatalog;AstronomicalObject"/>
        <rdfs:subClassOf>
            <owl:Restriction>
                <owl:onProperty rdf:resource="&starguidecatalog;border"/>
                <owl:allValuesFrom rdf:resource="&starguidecatalog;Tile"/>
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        </rdfs:subClassOf>
        <owl:disjointWith rdf:resource="&starguidecatalog;Supernova"/>
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    <owl:Class rdf:about="&starguidecatalog;Supernova">
        <owl:equivalentClass>
            <owl:Class>
                <owl:intersectionOf rdf:parseType="Collection">
                    <rdf:Description rdf:about="&starguidecatalog;AstronomicalObject"/>
                    <owl:Restriction>
                        <owl:onProperty rdf:resource="&starguidecatalog;astroClass"/>
                        <owl:hasValue rdf:datatype="&xsd;float">1.0</owl:hasValue>
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        <rdfs:subClassOf rdf:resource="&starguidecatalog;AstronomicalObject"/>
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    <owl:Class rdf:about="&starguidecatalog;Tile">
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        <ra rdf:datatype="&xsd;float">1.0</ra>
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    </owl:NamedIndividual>
</rdf:RDF>

Please note this is a scenario for testing proposes only. It's not meant to be a real scenario !
Cheers

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     at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
     at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
     at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
     at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
     at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
     at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
     at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
null : http://protege.stanford.edu/mv#MiniVan : http://www.w3.org/1999/02/22-rdf-syntax-ns#type : http://www.w3.org/2000/01/rdf-schema#Class
============
java.lang.NullPointerException
     at oracle.ORDFFrameCreator.finish(ORDFFrameCreator.java:376)
     at edu.stanford.smi.protegex.storage.walker.protege.ProtegeFrameWalker.walk(Unknown Source)
     at oracle.OKnowledgeBaseFactory.saveKnowledgeBase(OKnowledgeBaseFactory.java:177)
     at oracle.OImportExportPlugin.exportProject(OImportExportPlugin.java:124)
     at oracle.OImportExportPlugin.handleExportRequest(OImportExportPlugin.java:109)
     at edu.stanford.smi.protege.ui.ProjectManager.exportProjectRequest(Unknown Source)
     at edu.stanford.smi.protege.action.ExportPluginAction.actionPerformed(Unknown Source)
     at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
     at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
     at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
     at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
     at javax.swing.AbstractButton.doClick(AbstractButton.java:357)
     at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1223)
     at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1264)
     at java.awt.Component.processMouseEvent(Component.java:6263)
     at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
     at java.awt.Component.processEvent(Component.java:6028)
     at java.awt.Container.processEvent(Container.java:2041)
     at java.awt.Component.dispatchEventImpl(Component.java:4630)
     at java.awt.Container.dispatchEventImpl(Container.java:2099)
     at java.awt.Component.dispatchEvent(Component.java:4460)
     at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4574)
     at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4238)
     at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4168)
     at java.awt.Container.dispatchEventImpl(Container.java:2085)
     at java.awt.Window.dispatchEventImpl(Window.java:2478)
     at java.awt.Component.dispatchEvent(Component.java:4460)
     at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
     at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
     at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
     at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
     at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
     at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
     at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
WARNING: java.lang.NullPointerException -- OImportExportPlugin.handleErrors()
In saveKnowledgeBase 1
java.sql.SQLException: Excepción de E/S: The Network Adapter could not establish the connection
     at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:100)
     at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:130)
     at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:215)
     at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:378)
     at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:434)
     at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:165)
     at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:31)
     at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:772)
     at java.sql.DriverManager.getConnection(DriverManager.java:582)
     at java.sql.DriverManager.getConnection(DriverManager.java:185)
     at oracle.ORDFFrameCreator.finish(ORDFFrameCreator.java:349)
     at edu.stanford.smi.protegex.storage.walker.protege.ProtegeFrameWalker.walk(Unknown Source)
     at oracle.OKnowledgeBaseFactory.saveKnowledgeBase(OKnowledgeBaseFactory.java:177)
     at oracle.OImportExportPlugin.exportProject(OImportExportPlugin.java:124)
     at oracle.OImportExportPlugin.handleExportRequest(OImportExportPlugin.java:109)
     at edu.stanford.smi.protege.ui.ProjectManager.exportProjectRequest(Unknown Source)
     at edu.stanford.smi.protege.action.ExportPluginAction.actionPerformed(Unknown Source)
     at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
     at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
     at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
     at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
     at javax.swing.AbstractButton.doClick(AbstractButton.java:357)
     at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1223)
     at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1264)
     at java.awt.Component.processMouseEvent(Component.java:6263)
     at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
     at java.awt.Component.processEvent(Component.java:6028)
     at java.awt.Container.processEvent(Container.java:2041)
     at java.awt.Component.dispatchEventImpl(Component.java:4630)
     at java.awt.Container.dispatchEventImpl(Container.java:2099)
     at java.awt.Component.dispatchEvent(Component.java:4460)
     at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4574)
     at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4238)
     at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4168)
     at java.awt.Container.dispatchEventImpl(Container.java:2085)
     at java.awt.Window.dispatchEventImpl(Window.java:2478)
     at java.awt.Component.dispatchEvent(Component.java:4460)
     at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
     at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
     at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
     at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
     at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
     at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
     at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
null : http://protege.stanford.edu/mv#MiniVan : http://www.w3.org/1999/02/22-rdf-syntax-ns#type : http://www.w3.org/2000/01/rdf-schema#Class
============
java.lang.NullPointerException
     at oracle.ORDFFrameCreator.finish(ORDFFrameCreator.java:376)
     at edu.stanford.smi.protegex.storage.walker.protege.ProtegeFrameWalker.walk(Unknown Source)
     at oracle.OKnowledgeBaseFactory.saveKnowledgeBase(OKnowledgeBaseFactory.java:177)
     at oracle.OImportExportPlugin.exportProject(OImportExportPlugin.java:124)
     at oracle.OImportExportPlugin.handleExportRequest(OImportExportPlugin.java:109)
     at edu.stanford.smi.protege.ui.ProjectManager.exportProjectRequest(Unknown Source)
     at edu.stanford.smi.protege.action.ExportPluginAction.actionPerformed(Unknown Source)
     at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
     at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
     at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
     at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
     at javax.swing.AbstractButton.doClick(AbstractButton.java:357)
     at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1223)
     at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1264)
     at java.awt.Component.processMouseEvent(Component.java:6263)
     at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
     at java.awt.Component.processEvent(Component.java:6028)
     at java.awt.Container.processEvent(Container.java:2041)
     at java.awt.Component.dispatchEventImpl(Component.java:4630)
     at java.awt.Container.dispatchEventImpl(Container.java:2099)
     at java.awt.Component.dispatchEvent(Component.java:4460)
     at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4574)
     at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4238)
     at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4168)
     at java.awt.Container.dispatchEventImpl(Container.java:2085)
     at java.awt.Window.dispatchEventImpl(Window.java:2478)
     at java.awt.Component.dispatchEvent(Component.java:4460)
     at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
     at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
     at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
     at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
     at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
     at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
     at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
WARNING: java.lang.NullPointerException -- OImportExportPlugin.handleErrors()

Oracle RDF Rules Semantics

Hi,
Are the semantics of the rules for Oracle RDF documented anywhere? I'm not exactly sure what I can and cannot say.
thanks
John

I'm trying to create user defined rule function and bind variable in rule syntax, but i dont know how to do that in
Oracle Db. I did that successfully when i tried in Jena and using RDF/XML File...
For example i have such RDF/XML file like this :
<?xml version="1.0"?>
<rdf:RDF
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:owl="http://www.w3.org/2002/07/owl#"
xmlns:xsd="http://www.w3.org/2001/XMLSchema#"
xmlns="http://www.owl-ontologies.com/Ontology1230795417.owl#"
xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
xml:base="http://www.owl-ontologies.com/Ontology1230795417.owl">
<owl:Ontology rdf:about=""/>
<owl:Class rdf:ID="Example"/>
<owl:FunctionalProperty rdf:ID="has_factorialvalue">
<rdfs:range rdf:resource="http://www.w3.org/2001/XMLSchema#int"/>
<rdfs:domain rdf:resource="#Example"/>
<rdf:type rdf:resource="http://www.w3.org/2002/07/owl#DatatypeProperty"/>
</owl:FunctionalProperty>
<owl:FunctionalProperty rdf:ID="has_value">
<rdfs:range rdf:resource="http://www.w3.org/2001/XMLSchema#int"/>
<rdfs:domain rdf:resource="#Example"/>
<rdf:type rdf:resource="http://www.w3.org/2002/07/owl#DatatypeProperty"/>
</owl:FunctionalProperty>
<Example rdf:ID="Example_1">
<has_value rdf:datatype="http://www.w3.org/2001/XMLSchema#int" >5</has_value>
</Example>
<Example rdf:ID="Example_2">
<has_value rdf:datatype="http://www.w3.org/2001/XMLSchema#int">3</has_value>
</Example>
</rdf:RDF>
I have one Class "Example" which has 2 datatype properties : has_value and has_factorial_value, So if I have
an Example1 as an instance of Example which has_value is 5 then has_factorial_value must be 120.
So the Rule is
exampletestrule1: (?b rdf:type h:Example) (?b h:has_value ?z) myfactorial(?z,?rs) -> (?b h:has_factorialvalue ?rs)
Here for the source code
Now... The problem is how to implement this user defined rule in Oracle db (create our own builtin function then apply it to oracle semantic rule, in this case, myfactorial

Implementing Oracle RDF for existing databases.

Hi,
I am a newbie to RDF. I am supposed to dio a PoC for a Oracle RDF. I donot know what is RDF [i have learnt it now], OWL, SPARQL etc...I need advice from experienced people about how to start with a simple applications etc...
Please let me know if there is any good step by step tutorials and sample code. I have searched the entire web and i couldn't get a good sample code for Oracle RDF projects.
May i know whether there is any such projects gets implemented in Oracle RDF or is that just a area for research?
Why do we need Jena API? Why should i opt for Oracle RDF? By what means it is going to give me a performance boost? etc.. are some unanswered questions i still have in my mind.
Thanks much in advance for your time....
Regards,
Sakthi.

Hi Sakthi,
My name is Jorge Barba, working in Support for Semantic Technologies.
We have a set of notes that I can share with you so you can start implementing simple ontologies, I can also present to you a 1hour and a half presentation via remote web conference of Semantics and Oracle. If you are interested please send me an email at [email protected]
Regards!
Jorge

Layout issue in Oracle rdf

Hi Experts,
I am facing a strange issue in oracle rdf reports.
Requesting an assistance from you.
I have a report which displays the vendor information.
For all the vendors the layout is working fine for me, but for one particular vendor the vendor name is splitting into 2 lines as follows.
EAD - Empresa de Arquivo de
Documentação, SA
But it is one name as 'EAD - Empresa de Arquivo de Documentação, SA'.
Please help me on this. how to display this as a single value.
Thanks,
Zaheer.

This is probably because the field is not wide enough. Check the horizontal elasticity property of this field (and possibly the frames around it).

Configuring Apache HTTP Server with Oracle Weblogic Server plugin

Hello friends,
I have a scenario of OIM 9.1.0.2 on Oracle Application Server 11g and Weblogic Server Apache HTTP Server.
Oracle WebLogic Server is configured in cluster (node1 and node2), also use the Oracle Weblogic Server plugin for integration with Apache.
One of the tests is to lose one of the nodes for the apache plugin redirects the node that has less overhead.
When the mode is node1 and node2 stop start mode and try to access the management console of Oracle Identity Manager, the plugin sometimes redirects to the other active node, and on another occasion shows the oracle management console identity manager without the colors of the basic look and feel.
Deputy of the Apache HTTP Server log, do you expect your comments to solve this case?
*************************************************log****************************************************
Server Details are:
OrigHostInfo [192.168.1.200]
isOrigHostInfoDNS [0]
Host [192.168.1.200]
Port [7002]
SecurePort [7004]
Mon Jan 30 22:10:43 2012 <2600713279794431> Initializing lastIndex=0 for a list of length=1
Mon Jan 30 22:10:43 2012 <2600713279794431> initJVMID: Trying to locate Primary or Secondary using SrvrInfo with JVMID [-872106207]
Mon Jan 30 22:10:43 2012 <2600713279794431> initJVMID: Found Primary 192.168.1.200:7002:7004
Mon Jan 30 22:10:43 2012 <2600713279794431> INFO: Closing SSL context
Mon Jan 30 22:10:43 2012 <2600713279794431> .....internal request /bea_wls_internal/WLDummyInitJVMIDs.....processed
Mon Jan 30 22:10:43 2012 <2600713279794431> getPreferredFromCookie: Found 1 servers
Mon Jan 30 22:10:43 2012 <2600713279794431> attempt #0 out of a max of 5
Mon Jan 30 22:10:43 2012 <2600713279794431> trying connect to PRIMARY '192.168.1.200'/7002/7004
Mon Jan 30 22:10:43 2012 <2600713279794431> getPooledConn: No more connections in the pool for Host[192.168.1.200] Port[7002] SecurePort[7004]
Mon Jan 30 22:10:43 2012 <2600713279794431> New SSL URL: match = 0 oid = 22
Mon Jan 30 22:10:43 2012 <2600713279794431> Connect returns -1, and error no set to 150, msg 'Operation now in progress'
Mon Jan 30 22:10:43 2012 <2600713279794431> EINPROGRESS in connect() - selecting
Mon Jan 30 22:10:43 2012 <2600713279794431> Setting peerID for new SSL connection
Mon Jan 30 22:10:43 2012 <2600713279794431> 0ae2 0436 0000 1b5c ...6...\
Mon Jan 30 22:10:43 2012 <2600713279794431> Local Port of the socket is 39186
Mon Jan 30 22:10:43 2012 <2600713279794431> Remote Host 192.168.1.200 Remote Port 7004
Mon Jan 30 22:10:43 2012 <2600713279794431> created a new connection to preferred server '192.168.1.200/7004' for '/xlWebApp/images/spacer.gif', Local port:39186
Mon Jan 30 22:10:43 2012 <2600713279794431> INFO: CA certificate missing basicConstraints, validation failed
Mon Jan 30 22:10:43 2012 <2600713279794431> ERROR: SSLWrite failed
Mon Jan 30 22:10:43 2012 <2600713279794431> SEND failed (ret=-1) at 793 of file ../nsapi/URL.cpp
Mon Jan 30 22:10:43 2012 <2600713279794431> *******Exception type [WRITE_ERROR_TO_SERVER] raised at line 794 of ../nsapi/URL.cpp
Mon Jan 30 22:10:43 2012 <2600713279794431> Marking 192.168.1.200:7004 as bad
Mon Jan 30 22:10:43 2012 <2600713279794431> got exception in sendRequest phase: WRITE_ERROR_TO_SERVER [os error=0, line 794 of ../nsapi/URL.cpp]: at line 3160
Mon Jan 30 22:10:43 2012 <2600713279794431> INFO: Closing SSL context
Mon Jan 30 22:10:43 2012 <2598413279794431>
================New Request: [GET /images/cab.gif HTTP/1.1] =================
Mon Jan 30 22:10:43 2012 <2598413279794431> INFO: SSL is configured
Mon Jan 30 22:10:43 2012 <2598413279794431> SSL Main Context not set. Calling InitSSL
Mon Jan 30 22:10:43 2012 <2598413279794431> INFO: SSL configured successfully
Mon Jan 30 22:10:43 2012 <2598413279794431> Using Uri /images/cab.gif
Mon Jan 30 22:10:43 2012 <2598413279794431> After trimming path: '/images/cab.gif'
Mon Jan 30 22:10:43 2012 <2598413279794431> adding prepend path: /xlWebApp/
Mon Jan 30 22:10:43 2012 <2598413279794431> The final request string is '/xlWebApp/images/cab.gif'
Mon Jan 30 22:10:43 2012 <2598413279794431> Host extracted from serverlist is [192.168.1.100]
Mon Jan 30 22:10:43 2012 <2598413279794431> Host extracted from serverlist is [192.168.1.200]
Mon Jan 30 22:10:43 2012 <2598413279794431> Initializing lastIndex=0 for a list of length=2
Mon Jan 30 22:10:43 2012 <2598413279794431> getListNode: created a new server node: id='192.168.1.100:7004,192.168.1.200:7004' server_name='OIMSERVER', port='443'
Mon Jan 30 22:10:43 2012 <2598413279794431> getPreferred: availcookie=[JSESSIONID=6RGCPnbTFRG7LBrTRpFnv1QLnQHkxkqr4pjGhhGJyrJWJ1rv86NK!-872106207!NONE]
Mon Jan 30 22:10:43 2012 <2598413279794431> Found cookie from cookie header: JSESSIONID=6RGCPnbTFRG7LBrTRpFnv1QLnQHkxkqr4pjGhhGJyrJWJ1rv86NK!-872106207!NONE
Mon Jan 30 22:10:43 2012 <2598413279794431> Parsing cookie JSESSIONID=6RGCPnbTFRG7LBrTRpFnv1QLnQHkxkqr4pjGhhGJyrJWJ1rv86NK!-872106207!NONE
Mon Jan 30 22:10:43 2012 <2598413279794431> getpreferredServersFromCookie: [-872106207!NONE]
Mon Jan 30 22:10:43 2012 <2598413279794431> primaryJVMID: [-872106207]
secondaryJVMID: [NONE]
Mon Jan 30 22:10:43 2012 <2598413279794431> No of JVMIDs found in cookie: 1
Mon Jan 30 22:10:43 2012 <2598413279794431> getPreferredFromCookie: Start Position is 0, listLen is 2
Mon Jan 30 22:10:43 2012 <2598413279794431> getPreferredFromCookie: Either JVMIDs not set or they are stale. Will try to get JVMIDs from WLS
Mon Jan 30 22:10:43 2012 <2598413279794431> initJVMID: Iterating SrvrList from position 0
Mon Jan 30 22:10:43 2012 <2598413279794431> ======internal request /bea_wls_internal/WLDummyInitJVMIDs======
initJVMID: Trying Host[192.168.1.100] Port[7004] SecurePort[7004] useSSL [1] ioTimeout [30] socketTimeout [2]
Mon Jan 30 22:10:43 2012 <2598413279794431> New SSL URL: match = 0 oid = 0
Mon Jan 30 22:10:43 2012 <2598413279794431> Connect returns -1, and error no set to 146, msg 'Connection refused'
Mon Jan 30 22:10:43 2012 <2598413279794431> Error connecting to host 192.168.1.100:7004
Mon Jan 30 22:10:43 2012 <2598413279794431> *******Exception type [CONNECTION_REFUSED] (Error connecting to host 192.168.1.100:7004 errno = 146) raised at line 1723 of ../nsapi/URL.cpp
Mon Jan 30 22:10:43 2012 <2598413279794431> initJVMID: Failed to retrieved JVMID for 192.168.1.100:7004:7004
Mon Jan 30 22:10:43 2012 <2598413279794431> initJVMID: Marked server as BAD
Mon Jan 30 22:10:43 2012 <2598413279794431> INFO: Closing SSL context
Mon Jan 30 22:10:43 2012 <2598413279794431> .....internal request /bea_wls_internal/WLDummyInitJVMIDs.....processed
Mon Jan 30 22:10:43 2012 <2598413279794431> ======internal request /bea_wls_internal/WLDummyInitJVMIDs======
initJVMID: Trying Host[192.168.1.200] Port[7004] SecurePort[7004] useSSL [1] ioTimeout [30] socketTimeout [2]
Mon Jan 30 22:10:43 2012 <2598413279794431> New SSL URL: match = 0 oid = 0
Mon Jan 30 22:10:43 2012 <2598413279794431> Connect returns -1, and error no set to 150, msg 'Operation now in progress'
Mon Jan 30 22:10:43 2012 <2598413279794431> EINPROGRESS in connect() - selecting
Mon Jan 30 22:10:43 2012 <2598413279794431> Setting peerID for new SSL connection
Mon Jan 30 22:10:43 2012 <2598413279794431> 0ae2 0436 0000 1b5c ...6...\
Mon Jan 30 22:10:43 2012 <2598413279794431> Local Port of the socket is 39188
Mon Jan 30 22:10:43 2012 <2598413279794431> Remote Host 192.168.1.200 Remote Port 7004
Mon Jan 30 22:10:43 2012 <2598413279794431> INFO: Certificate validation succeeded
Mon Jan 30 22:10:43 2012 <2598413279794431> INFO: Negotiated to cipher: 3
Mon Jan 30 22:10:43 2012 <2598413279794431> SSLWrite sent 171
Mon Jan 30 22:10:43 2012 <2598413279794431> SSLWrite completed, sent 171
Mon Jan 30 22:10:43 2012 <2598413279794431> Reader::fill() SSLRead returned: 0 290
Mon Jan 30 22:10:43 2012 <2598413279794431> URL::parseHeaders: CompleteStatusLine set to [HTTP/1.1 404 Not Found]
Mon Jan 30 22:10:43 2012 <2598413279794431> URL::parseHeaders: StatusLine set to [404 Not Found]
Mon Jan 30 22:10:43 2012 <2598413279794431> parsed all headers OK
Mon Jan 30 22:10:43 2012 <2598413279794431> Parsing cluster list: -872106207!182584374!7002!7004
Mon Jan 30 22:10:43 2012 <2598413279794431> parseJVMID: Parsing JVMID '-872106207!182584374!7002!7004'
Mon Jan 30 22:10:43 2012 <2598413279794431> parseJVMID: Actually parsing '-872106207!182584374!7002!7004'
Mon Jan 30 22:10:43 2012 <2598413279794431> ServerInfo struct for JVMID '-872106207' populated
Server Details are:
OrigHostInfo [192.168.1.200]
isOrigHostInfoDNS [0]
Host [192.168.1.200]
Port [7002]
SecurePort [7004]
Mon Jan 30 22:10:43 2012 <2598413279794431> Initializing lastIndex=0 for a list of length=1
Mon Jan 30 22:10:43 2012 <2598413279794431> initJVMID: Trying to locate Primary or Secondary using SrvrInfo with JVMID [-872106207]
Mon Jan 30 22:10:43 2012 <2598413279794431> initJVMID: Found Primary 192.168.1.200:7002:7004
Mon Jan 30 22:10:43 2012 <2598413279794431> INFO: Closing SSL context
Mon Jan 30 22:10:43 2012 <2598413279794431> .....internal request /bea_wls_internal/WLDummyInitJVMIDs.....processed
Mon Jan 30 22:10:43 2012 <2598413279794431> getPreferredFromCookie: Found 1 servers
Mon Jan 30 22:10:43 2012 <2598413279794431> attempt #0 out of a max of 5
Mon Jan 30 22:10:43 2012 <2598413279794431> trying connect to PRIMARY '192.168.1.200'/7002/7004
Mon Jan 30 22:10:43 2012 <2598413279794431> getPooledConn: No more connections in the pool for Host[192.168.1.200] Port[7002] SecurePort[7004]
Mon Jan 30 22:10:43 2012 <2598413279794431> New SSL URL: match = 0 oid = 22
Mon Jan 30 22:10:43 2012 <2598413279794431> Connect returns -1, and error no set to 150, msg 'Operation now in progress'
Mon Jan 30 22:10:43 2012 <2598413279794431> EINPROGRESS in connect() - selecting
Mon Jan 30 22:10:43 2012 <2598413279794431> Setting peerID for new SSL connection
Mon Jan 30 22:10:43 2012 <2598413279794431> 0ae2 0436 0000 1b5c ...6...\
Mon Jan 30 22:10:43 2012 <2598413279794431> Local Port of the socket is 39189
Mon Jan 30 22:10:43 2012 <2598413279794431> Remote Host 192.168.1.200 Remote Port 7004
Mon Jan 30 22:10:43 2012 <2598413279794431> created a new connection to preferred server '192.168.1.200/7004' for '/xlWebApp/images/cab.gif', Local port:39189
Mon Jan 30 22:10:43 2012 <2598413279794431> INFO: CA certificate missing basicConstraints, validation failed
Mon Jan 30 22:10:43 2012 <2598413279794431> ERROR: SSLWrite failed
Mon Jan 30 22:10:43 2012 <2598413279794431> SEND failed (ret=-1) at 793 of file ../nsapi/URL.cpp
Mon Jan 30 22:10:43 2012 <2598413279794431> *******Exception type [WRITE_ERROR_TO_SERVER] raised at line 794 of ../nsapi/URL.cpp
Mon Jan 30 22:10:43 2012 <2598413279794431> Marking 192.168.1.200:7004 as bad
Mon Jan 30 22:10:43 2012 <2598413279794431> got exception in sendRequest phase: WRITE_ERROR_TO_SERVER [os error=0, line 794 of ../nsapi/URL.cpp]: at line 3160
Mon Jan 30 22:10:43 2012 <2598413279794431> INFO: Closing SSL context
Thanks

"One of the tests is to lose one of the nodes for the apache plugin redirects the node that has less overhead."
Note that the plug-in does a round robin load balancing, for example, in the case of three server (1,2,3) it does 1-2-3-1-2-3-1...
with server 3 going down it does 1-2-1-2-1...
An example configuration (with SSL off) looks as follows:
LoadModule weblogic_module   "/home/oracle/weblogic12.1.1/apache/modules/mod_wl.so"
<IfModule weblogic_module>
     ConnectTimeoutSecs 10
     ConnectRetrySecs 2
     DebugConfigInfo ON
     WLSocketTimeoutSecs 2
     WLIOTimeoutSecs 300
     Idempotent ON
     FileCaching ON
     KeepAliveSecs 20
     KeepAliveEnabled ON
     DynamicServerList ON
     WLProxySSL OFF
</IfModule>
<Location /LoadTest6>
     SetHandler weblogic-handler
     WebLogicCluster 172.31.0.175:7002,172.31.0.113:7003
</Location>Also see the complete example here: http://middlewaremagic.com/weblogic/?p=7795
"the plugin sometimes redirects to the other active node"
This is somewhat strange, do you have session binding turned off?
"and on another occasion shows the oracle management console identity manager without the colors of the basic look and feel."
This could happen due to mime types (not really sure just a hunch). Here is a general story on this concept: https://developer.mozilla.org/en/Properly_Configuring_Server_MIME_Types
and the apache module: http://httpd.apache.org/docs/2.2/mod/mod_mime.html

Oracle RDF / Joseki : issue with large literals

Hi,
I have been using Joseki to query an Oracle RDF model. There seems to be an issue with large literals (according to a few unreliable tests, I would say this concerns literals around and over 4000 chars).
Here are the two potential behaviours :
First case:
If the results contains several lines, one of which contains an overly large literal, there are NO exception on the server side, but the resulting xml is incomplete.
It misses the "line" containing the large literal, and the xml is stopped there (which means that it also misses the closing </results> and </sparql>. In my case, I am using the results through Jena's sparqlService, which means I get this message :
XMLStreamException: Unexpected EOF; was expecting a close tag for element <results>
+at [row,col {unknown-source}]: [31,0]+
Second case:
If the query only returns one line which contains an overly large literal, the client receives a simple *"HttpException: 500 Internal Server Error"*
Here is the error message from my server :
+INFO [[ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)'] (SPARQL.java:165) - Throwable: we+
blogic.jdbc.wrapper.Clob_oracle_sql_CLOB cannot be cast to oracle.sql.CLOB
java.lang.ClassCastException: weblogic.jdbc.wrapper.Clob_oracle_sql_CLOB cannot be cast to oracle.sql.CLOB
at oracle.spatial.rdf.client.jena.OracleSemIterator.getNodesFromResultSet(OracleSemIterator.java:579)
at oracle.spatial.rdf.client.jena.OracleSemIterator.next(OracleSemIterator.java:445)
at oracle.spatial.rdf.client.jena.OracleLeanQueryIter.moveToNextBinding(OracleLeanQueryIter.java:135)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.nextBinding(QueryIteratorBase.java:98)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIterConvert.moveToNextBinding(QueryIterConvert.java:56)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.nextBinding(QueryIteratorBase.java:98)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIterRepeatApply.moveToNextBinding(QueryIterRepeatApply.java:76)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.nextBinding(QueryIteratorBase.java:98)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIterProcessBinding.hasNextBinding(QueryIterProcessBinding.java:54
+)+
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:69)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIterConvert.hasNextBinding(QueryIterConvert.java:50)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:69)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorWrapper.hasNextBinding(QueryIteratorWrapper.java:30)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:69)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorWrapper.hasNextBinding(QueryIteratorWrapper.java:30)
at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:69)
at com.hp.hpl.jena.sparql.engine.ResultSetStream.hasNext(ResultSetStream.java:62)
at org.joseki.processors.SPARQL.executeQuery(SPARQL.java:309)
at org.joseki.processors.SPARQL.execQueryWorker(SPARQL.java:288)
at org.joseki.processors.SPARQL.execQueryProtected(SPARQL.java:126)
at org.joseki.processors.SPARQL.execOperation(SPARQL.java:120)
at org.joseki.processors.ProcessorBase.exec(ProcessorBase.java:112)
at org.joseki.ServiceRequest.exec(ServiceRequest.java:36)
at org.joseki.Dispatcher.dispatch(Dispatcher.java:59)
at org.joseki.http.Servlet.doCommon(Servlet.java:177)
at org.joseki.http.Servlet.doGet(Servlet.java:138)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:292)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:175)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3594)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2202)
at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2108)
at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1432)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)
Would there be any fix / workaround ?
Please let me know if you need further information / tests.
Thanks,
Regards,
Julien

Thanks for your reply.
While trying to build up a small test case, I found out why there were discrepancies between the two cases I described.
Indeed, usually, the two cases return the same thing (no exception on the server side, but incomplete resulting XML).
The exception I described happened when I tried something else. Since I saw that issues were coming from long literals, I used fn:string-length (ARQ) to figure out how long they were.
The test case resulting in the CLOB-cast-exception is:
- too large literal
- only one result "line" containing this literal
- usage of fn:string-length (which does not change the behaviour in other cases (i.e. no long literals or/and several lines).
Anyway, you will receive the other test cases shortly.
Thanks,
Regards,
Julien

How do you query Oracle RDF database using Java program?

Does anyone know how to get data out of the oracle RDF database using Java?
I'm running the following java code and it returns basically null values. My guess is that the get_triple() function returns a dataset other than resultset. I've tried searching the Oracle web site. Am I supposed to be using CLOB object? Any help would be appreciated. Thanks
sql = "SELECT a.triple.GET_TRIPLE() AS triple FROM family_rdf_data a";
ResultSet rs = stmt.executeQuery( sql ) ;
while ( rs.next() )
System.out.println( rs.getString(1) ) ;
rs.close() ;

get_triple() returns an object, and the code would be different from the code of retrieving a string. Some sample code for retrieving objects is at http://www.oracle.com/technology/sample_code/tech/java/sqlj_jdbc/files/advanced/advanced.html
get_subject(), get_property() return strings so the code below should work. get_object() returns a CLOB so different handling would be required and there is some sample code at the link above.
Melli

Where i can find this validator oracle.iam.requestactions.plugins.dataval ?

Hi,
I need to modify this validator -> oracle.iam.requestactions.plugins.datavalidator.CreateUserDataValidator.
this is possible?
when i create a new validator the create user template doesn't work.
error:
[2012-10-10T14:28:13.548-05:00] [oim_server1] [NOTIFICATION] [IAM-0080006] [oracle.iam.platform.kernel.impl] [tid: [ACTIVE].ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)'] [userId: oiminternal] [ecid: e48b78a1878c940d:-1d5fbd71:13a4b638645:-8000-00000000000022b6,0] [APP: oim#11.1.1.3.0] Orchestration process moved to failed stage, and the corresponding error is - {0}[[
oracle.iam.platform.kernel.EventFailedException: IAM-3050096:An error occurred while generating the Username. Invalid values passed for attribute Email.:Email
     at oracle.iam.identity.usermgmt.utils.UserManagerUtils.createEventFailedException(UserManagerUtils.java:660)
     at oracle.iam.identity.usermgmt.utils.UserManagerUtils.createEventFailedException(UserManagerUtils.java:640)
     at oracle.iam.identity.usermgmt.impl.handlers.create.CreateUserPreProcessHandler.execute(CreateUserPreProcessHandler.java:407)
     at oracle.iam.platform.kernel.impl.OrchProcessData.runPreProcessEvents(OrchProcessData.java:899)
     at oracle.iam.platform.kernel.impl.OrchProcessData.runEvents(OrchProcessData.java:634)
     at oracle.iam.platform.kernel.impl.OrchProcessData.executeEvents(OrchProcessData.java:227)
     at oracle.iam.platform.kernel.impl.OrchestrationEngineImpl.resumeProcess(OrchestrationEngineImpl.java:749)
     at oracle.iam.platform.kernel.impl.OrchestrationEngineImpl.resumeProcess(OrchestrationEngineImpl.java:780)
     at oracle.iam.platform.kernel.impl.OrhestrationAsyncTask.execute(OrhestrationAsyncTask.java:129)
     at oracle.iam.platform.async.impl.TaskExecutor.executeUnmanagedTask(TaskExecutor.java:101)
     at oracle.iam.platform.async.impl.TaskExecutor.execute(TaskExecutor.java:71)
     at oracle.iam.platform.async.messaging.MessageReceiver.onMessage(MessageReceiver.java:68)
     at sun.reflect.GeneratedMethodAccessor1738.invoke(Unknown Source)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:597)
     at com.bea.core.repackaged.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:310)
     at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
     at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
     at com.bea.core.repackaged.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:89)
     at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
     at com.bea.core.repackaged.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)
     at com.bea.core.repackaged.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)
     at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
     at com.bea.core.repackaged.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
     at $Proxy352.onMessage(Unknown Source)
     at weblogic.ejb.container.internal.MDListener.execute(MDListener.java:574)
     at weblogic.ejb.container.internal.MDListener.transactionalOnMessage(MDListener.java:477)
     at weblogic.ejb.container.internal.MDListener.onMessage(MDListener.java:379)
     at weblogic.jms.client.JMSSession.onMessage(JMSSession.java:4659)
     at weblogic.jms.client.JMSSession.execute(JMSSession.java:4345)
     at weblogic.jms.client.JMSSession.executeMessage(JMSSession.java:3821)
     at weblogic.jms.client.JMSSession.access$000(JMSSession.java:115)
     at weblogic.jms.client.JMSSession$UseForRunnable.run(JMSSession.java:5170)
     at weblogic.work.SelfTuningWorkManagerImpl$WorkAdapterImpl.run(SelfTuningWorkManagerImpl.java:528)
     at weblogic.work.ExecuteThread.execute(ExecuteThread.java:209)
     at weblogic.work.ExecuteThread.run(ExecuteThread.java:178)
Caused by: oracle.iam.identity.exception.UserNameGenerationException: IAM-3050096 : An error occurred while generating the Username. Invalid values passed for attribute Email.:Email
     at oracle.iam.identity.usermgmt.utils.UserNameGenerationUtil.checkEmailFormat(UserNameGenerationUtil.java:439)
     at oracle.iam.identity.usermgmt.utils.UserNameGenerationUtil.validateInputData(UserNameGenerationUtil.java:290)
     at oracle.iam.identity.usermgmt.utils.UserNameGenerationUtil.generateUserName(UserNameGenerationUtil.java:111)
     at oracle.iam.identity.usermgmt.utils.UserNameGenerationUtil.generateUserName(UserNameGenerationUtil.java:95)
     at oracle.iam.identity.usermgmt.impl.handlers.create.CreateUserPreProcessHandler.execute(CreateUserPreProcessHandler.java:386)
     ... 33 more
any idea??
thanks.!

The DataSetValidator element is an optional element in request dataset. It is one of the child elements of the request-data-set element that describes the user-defined plug-in details meant for validating the dataset attribute values. The request engine runs the implemented plug-in to validate request data during submission. If the validation is successful, then the request gets created. Otherwise, the request is not created. You must implement the plug-in logic. Each dataset can have only one DataSetValidator defined.
These are the attributes:
name: This attribute specifies a logical name of the DataSetValidator plug-in.
classname: This attribute specifies the fully qualified name of the implemented plug-in class.
The following example shows the DataSetValidator element:
<DataSetValidator name="CreateUserDataValidator" classname="oracle.iam.requestactions.plugins.datavalidator.CreateUserDataValidator"/>
And yes, The classname in the DataSetValidators in these default request datasets can be changed to a customized class to have customized validation.
Check this out:
http://docs.oracle.com/cd/E21764_01/doc.1111/e14309/request.htm#CIHCFIAE
I hope this really helps you,
Thiago Leoncio.

Weblogic plugin and cluster concepts

Hi,
I would like to clearly understand how the plugin and cluster work together in achieving load balancing.
For example if Apache proxies the request to each server instance in a cluster(if we use weblogic cluster parameter) on the round robin basis. How does the cluster do the the load balancing and how does it respond to webserver. I have read some documentation in edocs but couldnt find anything that would clearly explain how this works. All it talks about is the configuration of plugin and load balancing techniques in the cluster.Please throw some light on this and help me figure out how this thing works.
Thankyou very much.

Hi Hoze,
In Oracle Enterprise Manager lingo, a plug-in simply enables EM to monitor heterogeneous environments. In some cases this capability is available OOB or after the fact.
The table here
http://www.oracle.com/technology/products/oem/extensions/index.html
makes it clear if a plug-in is available OOB or available for download.
Thanks

Oracle RDF graph DB data modeling

I am wondering how Oracle RDF graph DB modeling the attributes of the node or relationship? Suppose a node (dubject or object) is a person which has a lot of attriubtes, say age, birthdate, ssn, address, etc, it sounds to me Oracle RDF cannot assoicate attriubtes to the node and instead it just models each attribute as a node in the graph. Is it common practice to include so many attributes in the graph database?

Hi,
RDF (and Oracle's RDF offering) in general allows associating as many attributes as you need to nodes in the graph. You are right in saying that those attributes are
modeled as RDF resources (nodes). This promotes sharing of resources.
e.g. The first two triples associate the same street resource with two individuals. The third triple
provides some descriptive information about this street resource.
<urn:John> <urn:livesOnStreet> <urn:StreetXYZ>
<urn:Mary> <urn:livesOnStreet> <urn:StreetXYZ>
<urn:StreetXYZ> rdfs:comment "Sunset Rd. .... "
It is usually up to an application to determine how many attributes to use. The underlying RDF graph model supports
multiple attributes and Oracle's RDF implementation supports multiple attributes.
It is also possible to store attributes in a separate relational table and use a SQL to join the graph query results
with your relational data.
Hope it helps,
Zhe Wu

Oracle rdf protege plugin and owl

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