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

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

    {
        // Skips the tag.
        BasicPattern triples = new BasicPattern() ;
        for ( int i = 1 ; i < list.size() ; i++ )
        {
            Item item = list.get(i) ;
            if ( ! item.isList() )
                BuilderLib.broken(item, "Not a triple structure") ;
            Triple t = BuilderGraph.buildTriple(item.getList()) ;
            triples.add(t) ; 
        }
        return triples ;
    }

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    private static ExprList buildExprListUntagged(ItemList list, int idx)
    {
        ExprList exprList = new ExprList() ;
        for ( int i = idx ; i < list.size() ; i++ )
        {
            Item item = list.get(i) ;
            exprList.add(buildExpr(item)) ;
        }
        return exprList ;
    }

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            ItemList list = item.getList() ;
            
            if ( list.size() == 0 )
                BuilderLib.broken(item, "Empty list for expression") ;
            
            Item head = list.get(0) ;
            
            if ( head.isNode() )
            {
                if ( head.getNode().isVariable() && list.size() == 1 )
                {
                    // The case of (?z)
                    return new ExprVar(Var.alloc(head.getNode())) ;
                }
                return buildFunctionCall(list) ;
            }
            else if ( head.isList() )
                BuilderLib.broken(item, "Head is a list") ;
            else if ( head.isSymbol() )
            {
                if ( item.isTagged(Tags.tagExpr) )
                {
                    BuilderLib.checkLength(2, list, "Wrong length: "+item.shortString()) ;
                    item = list.get(1) ;

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    protected Expr buildKnownFunction(ItemList list)
    {
        if ( list.size() == 0 )
            BuilderLib.broken(list, "Empty list for expression") ;
    
        Item item = list.get(0) ;
        String tag = item.getSymbol() ;
        if ( tag == null )
            BuilderLib.broken(item, "Null tag") ;
    
        Build b = findBuild(tag) ;
        if ( b == null )

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        return b.make(list) ;
    }


    protected static Expr buildFunctionCall(ItemList list)
    {
        Item head = list.get(0) ;
        Node node = head.getNode() ;
        if ( node.isBlank() )
            BuilderLib.broken(head, "Blank node for function call!") ;
        if ( node.isLiteral() )
            BuilderLib.broken(head, "Literal node for function call!") ;
        ExprList args = buildExprListUntagged(list, 1) ;

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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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    private static void loadGraph(Graph graph, ItemList list)
    {
        BuilderLib.checkLength(2, list, Tags.tagLoad ) ;
        Item item = list.get(1) ;
        if ( ! item.isNode() )
            BuilderLib.broken(item, "Expected: ("+Tags.tagLoad+" 'filename')") ;
        String s = NodeUtils.stringLiteral(item.getNode()) ;
        if ( s == null )
            BuilderLib.broken(item, "Expected: ("+Tags.tagLoad+" 'filename')") ;
        Model model = ModelFactory.createModelForGraph(graph) ;
        FileManager.get().readModel(model, s) ;
    }

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    @Override
    public void listFinish(int line, int column)
    {
        ItemList list = popList() ;
        Item item = Item.createList(list) ;
        listAdd(item) ;
    }

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            var = varAllocND.allocVar()  ;
        else if ( varName.equals(ARQConstants.allocVarMarker))      // "?." -- Allocate a named variable
            var = varAllocIntern.allocVar()  ;
        else
            var = Var.alloc(varName) ;
        Item item = Item.createNode(var, line, column) ;
        listAdd(item) ;
    }

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