Package com.hp.hpl.jena.sparql.sse

Examples of com.hp.hpl.jena.sparql.sse.Item

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        // Restore state
       
        // Choose the result.
        if ( list.size() > 2 )
        {
            Item item = list.getLast() ;
            super.setFormResult(item) ;
        }
    }
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    public void emitPName(int line, int column, String pname)
    {
        if ( inFormDecl() )
        {
            // Record a faked PName.  Works with BuilderPrefixMapping
            Item item = Item.createSymbol(pname, line, column) ;
            listAdd(item) ;
            return ;
        }
        String iriStr = resolvePrefixedName(pname, line, column) ;
        super.emitIRI(line, column, iriStr) ;
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        for (Item pair : prefixes)
        {
            if ( !pair.isList() || pair.getList().size() != 2 )
                BuilderLib.broken(pair, "Not a prefix/IRI pair") ;
            Item prefixItem = pair.getList().get(0) ;
            Item iriItem = pair.getList().get(1) ;

            // Maybe a Node (fake prefixed name) or a Symbol, depending on parser set up.
           
            String prefix = null ;

            // -- Prefix as symbol
            if ( prefixItem.isSymbol() )
                prefix = prefixItem.getSymbol() ;

            // -- Prefix as Node
//            if ( prefixItem.isNode())
//            {
//                Node n = prefixItem.getNode() ;
//                if ( ! n.isURI() )
//                    BuilderBase.broken(pair, "Prefix part is not a prefixed name: "+pair) ;
//
//                prefix = n.getURI();
//                // It will look like :x:
//               
//                if ( ! prefix.startsWith(":") )
//                    BuilderBase.broken(pair, "Prefix part is not a prefix name: "+pair) ;
//                prefix = prefix.substring(1) ;
//            }           

            if ( prefix == null )
                BuilderLib.broken(pair, "Prefix part not recognized: "+prefixItem) ;
           
            if ( ! prefix.endsWith(":") )
                BuilderLib.broken(pair, "Prefix part does not end with a ':': "+pair) ;
            prefix = prefix.substring(0, prefix.length()-1) ;
            if ( StrUtils.contains(prefix, ":") )
                BuilderLib.broken(pair, "Prefix itself contains a ':' : "+pair) ;
            // -- /Prefix
           
            Node iriNode = iriItem.getNode() ;

            if ( iriNode == null || ! iriNode.isURI() )
                BuilderLib.broken(pair, "Not an IRI: "+iriItem) ;

            String iri = iriNode.getURI();
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                    // This is just an example - it reads a graph in
                    // http://jena.apache.org/documentation/notes/sse.html
                    // format.  It is not a streaming parser; it creates some triples,
                    // then send them to the output. This style might be useful for creating
                    // triples from a converter process or program.
                    Item item = SSE.parse(in) ;
                    Graph graph = BuilderGraph.buildGraph(item) ;
                    Iterator<Triple> iter = graph.find(null, null, null) ;
                    for ( ; iter.hasNext() ; )
                        output.triple(iter.next()) ;
                }} ;
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        }
    }
    
    private void onePattern(Item elt)
    {
        Item pat = elt.getList().get(0) ;

        if (pat.isNode())
        {
            // (<uri> weight)
            Node n = pat.getNode() ;
            if (!n.isURI())
            {
                log.warn("Not a preicate URI: " + pat.toString()) ;
                return ;
            }
            addAbbreviation(elt) ;
        }
        else if (pat.isSymbol())
        {
            if ( pat.equals(OTHER) )
            {
                double d = elt.getList().get(1).getDouble() ;
                DefaultMatch = d ;
                return ;
            }
           
            if ( pat.equals(BNODE) || pat.equals(LITERAL) )
            {
                log.warn("Not a match for a predicate URI: " + pat.toString()) ;
                return ;
            }
            if ( pat.equals(TERM) || pat.equals(VAR) || pat.equals(ANY) )
                addAbbreviation(elt) ;
            else
            {
                log.warn("Not understood: " + pat) ;
                return ;
            }
        }
        else if (pat.isList() && pat.getList().size() == 3)
        {
            // It's of the form ((S P O) weight)
            Item w = elt.getList().get(1) ;
            Pattern pattern = new Pattern(((Number)(w.getNode().getLiteralValue())).doubleValue(),
                                          intern(pat.getList().get(0)), intern(pat.getList().get(1)),
                                          intern(pat.getList().get(2))) ;
            addPattern(pattern) ;
        }
        else
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        }
    }
   
    private void addAbbreviation(Item elt)
    {
        Item predicateTerm = elt.getList().get(0) ;
        // Single node - it's a predicate abbreviate.
        double numProp = elt.getList().get(1).getDouble() ;
       
        if ( count < 100 )
            addPatternsSmall(predicateTerm, numProp) ;
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     * @param in
     *            InputStream
     * @return ResultSet
     */
    public static ResultSet fromSSE(InputStream in) {
        Item item = SSE.parse(in);
        Log.warn(ResultSet.class, "Reading SSE result set not full implemented");
        // See SPARQLResult. Have a level of ResultSetFactory that does
        // "get SPARQLResult".
        // Or just boolean/result set because those are both srx. etc.

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    public StatsMatcher() {}
   
    public StatsMatcher(String filename)
    {
        try {
            Item stats = SSE.readFile(filename) ;
            if ( stats.isNil() )
            {
                Log.warn(this, "Empty stats file: "+filename) ;
                return ;
            }
            if ( !stats.isTagged(STATS) )
                throw new ARQException("Not a stats file: "+filename) ;
            init(stats) ;
        } catch (ItemException ex)
        {  // Debug
            throw ex ;
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        ItemList list = stats.getList().cdr();      // Skip tag
       
        if ( list.car().isTagged(META) )
        {       
            // Process the meta tag.
            Item elt1 = list.car();
            list = list.cdr();      // Move list on

            // Get count.
            Item x = Item.find(elt1.getList(), COUNT) ;
            if ( x != null )
                count = x.getList().get(1).asInteger() ;
        }
      
        while (!list.isEmpty())
        {
            Item elt = list.car() ;
            list = list.cdr();
            onePattern(elt) ;
        }
    }
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    }
   
    // The main recursive build operation.
    private Op build(ItemList list)
    {
        Item head = list.get(0) ;
        String tag = head.getSymbol() ;

        Build bob = findBuild(tag) ;
        if ( bob != null )
            return bob.make(list) ;
        else
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Related Classes of com.hp.hpl.jena.sparql.sse.Item

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  • arq.examples.riot.ExRIOT_5$SSEReader
  • arq.examples.riot.ExRIOT_5$SSEReaderFactory
  • com.hp.hpl.jena.query.ResultSetFactory
  • com.hp.hpl.jena.sparql.algebra.Algebra
  • com.hp.hpl.jena.sparql.algebra.AlgebraGenerator
  • com.hp.hpl.jena.sparql.algebra.AlgebraGenerator_LC3
  • com.hp.hpl.jena.sparql.engine.binding.TestBindingStreams
  • com.hp.hpl.jena.sparql.engine.optimizer.StatsMatcher
  • com.hp.hpl.jena.sparql.path.TestPath
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