package org.simantics.xml.sax.ontology;

import org.simantics.db.RequestProcessor;
import org.simantics.db.Resource;
import org.simantics.db.ReadGraph;
import org.simantics.db.request.Read;
import org.simantics.db.Session;
import org.simantics.db.exception.DatabaseException;
import org.simantics.db.service.QueryControl;

public class XMLResource {
    
    public final Resource AttributeGroup;
    public final Resource ComplexType;
    public final Resource Date;
    public final Resource DateTime;
    public final Resource Element;
    public final Resource ElementList;
    public final Resource Entity;
    public final Resource Time;
    public final Resource externalReferenceOf;
    public final Resource hasAttribute;
    public final Resource hasAttribute_Inverse;
    public final Resource hasComplexType;
    public final Resource hasComplexType_Inverse;
    public final Resource hasElement;
    public final Resource hasElementList;
    public final Resource hasElementList_Inverse;
    public final Resource hasElement_Inverse;
    public final Resource hasExternalReference;
    public final Resource hasID;
    public final Resource hasID_Inverse;
    public final Resource hasOriginalElementList;
    public final Resource hasOriginalElementList_Inverse;
    public final Resource hasReference;
    public final Resource referredBy;
        
    public static class URIs {
        public static final String AttributeGroup = "http://www.simantics.org/XML-1.0/AttributeGroup";
        public static final String ComplexType = "http://www.simantics.org/XML-1.0/ComplexType";
        public static final String Date = "http://www.simantics.org/XML-1.0/Date";
        public static final String DateTime = "http://www.simantics.org/XML-1.0/DateTime";
        public static final String Element = "http://www.simantics.org/XML-1.0/Element";
        public static final String ElementList = "http://www.simantics.org/XML-1.0/ElementList";
        public static final String Entity = "http://www.simantics.org/XML-1.0/Entity";
        public static final String Time = "http://www.simantics.org/XML-1.0/Time";
        public static final String externalReferenceOf = "http://www.simantics.org/XML-1.0/externalReferenceOf";
        public static final String hasAttribute = "http://www.simantics.org/XML-1.0/hasAttribute";
        public static final String hasAttribute_Inverse = "http://www.simantics.org/XML-1.0/hasAttribute/Inverse";
        public static final String hasComplexType = "http://www.simantics.org/XML-1.0/hasComplexType";
        public static final String hasComplexType_Inverse = "http://www.simantics.org/XML-1.0/hasComplexType/Inverse";
        public static final String hasElement = "http://www.simantics.org/XML-1.0/hasElement";
        public static final String hasElementList = "http://www.simantics.org/XML-1.0/hasElementList";
        public static final String hasElementList_Inverse = "http://www.simantics.org/XML-1.0/hasElementList/Inverse";
        public static final String hasElement_Inverse = "http://www.simantics.org/XML-1.0/hasElement/Inverse";
        public static final String hasExternalReference = "http://www.simantics.org/XML-1.0/hasExternalReference";
        public static final String hasID = "http://www.simantics.org/XML-1.0/hasID";
        public static final String hasID_Inverse = "http://www.simantics.org/XML-1.0/hasID/Inverse";
        public static final String hasOriginalElementList = "http://www.simantics.org/XML-1.0/hasOriginalElementList";
        public static final String hasOriginalElementList_Inverse = "http://www.simantics.org/XML-1.0/hasOriginalElementList/Inverse";
        public static final String hasReference = "http://www.simantics.org/XML-1.0/hasReference";
        public static final String referredBy = "http://www.simantics.org/XML-1.0/referredBy";
    }
    
    public static Resource getResourceOrNull(ReadGraph graph, String uri) {
        try {
            return graph.getResource(uri);
        } catch(DatabaseException e) {
            System.err.println(e.getMessage());
            return null;
        }
    }
    
    public XMLResource(ReadGraph graph) {
        AttributeGroup = getResourceOrNull(graph, URIs.AttributeGroup);
        ComplexType = getResourceOrNull(graph, URIs.ComplexType);
        Date = getResourceOrNull(graph, URIs.Date);
        DateTime = getResourceOrNull(graph, URIs.DateTime);
        Element = getResourceOrNull(graph, URIs.Element);
        ElementList = getResourceOrNull(graph, URIs.ElementList);
        Entity = getResourceOrNull(graph, URIs.Entity);
        Time = getResourceOrNull(graph, URIs.Time);
        externalReferenceOf = getResourceOrNull(graph, URIs.externalReferenceOf);
        hasAttribute = getResourceOrNull(graph, URIs.hasAttribute);
        hasAttribute_Inverse = getResourceOrNull(graph, URIs.hasAttribute_Inverse);
        hasComplexType = getResourceOrNull(graph, URIs.hasComplexType);
        hasComplexType_Inverse = getResourceOrNull(graph, URIs.hasComplexType_Inverse);
        hasElement = getResourceOrNull(graph, URIs.hasElement);
        hasElementList = getResourceOrNull(graph, URIs.hasElementList);
        hasElementList_Inverse = getResourceOrNull(graph, URIs.hasElementList_Inverse);
        hasElement_Inverse = getResourceOrNull(graph, URIs.hasElement_Inverse);
        hasExternalReference = getResourceOrNull(graph, URIs.hasExternalReference);
        hasID = getResourceOrNull(graph, URIs.hasID);
        hasID_Inverse = getResourceOrNull(graph, URIs.hasID_Inverse);
        hasOriginalElementList = getResourceOrNull(graph, URIs.hasOriginalElementList);
        hasOriginalElementList_Inverse = getResourceOrNull(graph, URIs.hasOriginalElementList_Inverse);
        hasReference = getResourceOrNull(graph, URIs.hasReference);
        referredBy = getResourceOrNull(graph, URIs.referredBy);
    }
    
    public static XMLResource getInstance(ReadGraph graph) {
        Session session = graph.getSession();
        XMLResource ret = session.peekService(XMLResource.class);
        if(ret == null) {
            QueryControl qc = graph.getService(QueryControl.class);
            ret = new XMLResource(qc.getIndependentGraph(graph));
            session.registerService(XMLResource.class, ret);
        }
        return ret;
    }
    
    public static XMLResource getInstance(RequestProcessor session) throws DatabaseException {
        XMLResource ret = session.peekService(XMLResource.class);
        if(ret == null) {
            ret = session.syncRequest(new Read<XMLResource>() {
                public XMLResource perform(ReadGraph graph) throws DatabaseException {
                    QueryControl qc = graph.getService(QueryControl.class);
                    return new XMLResource(qc.getIndependentGraph(graph));
                }
            });
            session.registerService(XMLResource.class, ret);
        }
        return ret;
    }
    
}