Examples of com.hp.hpl.jena.sparql.expr.Expr

com.hp.hpl.jena.sparql.expr.Expr

            out.print(n) ;


            out.incIndent() ;
            for ( int i = 1 ; ; i++ )
            {
                Expr expr = func.getArg(i) ;
                if ( expr == null )
                    break ; 
                // endLine() ;
                out.print(' ') ;
                expr.visit(this) ;
            }
            out.print(")") ;
            out.decIndent() ;
        }

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                PrefixMapping pmap = PrefixMapping.Factory.create()  ;
                pmap.setNsPrefixes(ARQConstants.getGlobalPrefixMap()) ;
                pmap.setNsPrefix("", "http://example/") ;
                pmap.setNsPrefix("ex", "http://example/ns#") ;
                
                Expr expr = ExprUtils.parse(exprStr, pmap) ;
                if ( verbose )
                    System.out.print(expr.toString()+" => ") ;
                
                if ( actionPrint )
                {
                    if ( actionPrintSPARQL )
                        System.out.println(ExprUtils.fmtSPARQL(expr)) ;
                    if ( actionPrintPrefix )
                        WriterSSE.out(IndentedWriter.stdout, expr, new Prologue(pmap)) ;
                    continue ;
                }
                
                try {
                    if ( actionCopySubstitute )
                    {
                        Expr e = expr.copySubstitute(BindingFactory.create(), true) ;
                        System.out.println(e) ;
                    }
                    else
                    {
                        // Default action

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            for ( Var v : project.getVars() )
            {
                if ( ! first )
                  out.print(" ") ;
                first = false ;
                Expr expr = project.getExpr(v) ;
                if ( expr != null )
                {
                    start() ;
                    out.print(v.toString()) ;
                    out.print(" ") ;

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    private static void _addVar(VarExprList varExprList, Var v)
    {
        if ( varExprList.contains(v) )
        {
            Expr expr = varExprList.getExpr(v) ;
            if ( expr != null )
                
                // SELECT (?a+?b AS ?x) ?x
                throw new QueryBuildException("Duplicate variable (had an expression) in result projection '"+v+"'") ;
            // SELECT ?x ?x

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    {
        VarExprList varExprList2 = new VarExprList() ;
        boolean changed = false ;
        for ( Var v : varExprList.getVars() )
        {
            Expr expr = varExprList.getExpr(v) ;
            Var v2 = (Var)nodeTransform.convert(v) ;
            Expr expr2 = ( expr != null ) ? transform(nodeTransform, expr) : null ;
            
            if ( ! equal(v, v2) || ! equal(expr, expr2) )
                changed = true ;
            varExprList2.add(v2, expr2) ;
        }

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    {
          ExprList exprList2 = new ExprList() ;
          boolean changed = false ;
          for(Expr expr : exprList)
          {
              Expr expr2 = transform(nodeTransform, expr) ;
              if ( expr != expr2 )
                  changed = true ;
              exprList2.add(expr2) ;
          }
          if ( ! changed ) return exprList ;

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    {
        List<SortCondition> conditions2 = new ArrayList<SortCondition>() ;
        boolean same = true ;
        for ( SortCondition sc : conditions )
        {
            Expr expr = sc.getExpression() ;
            Expr expr2 = transform(nodeTransform, expr) ;
            if ( expr != expr2 )
                same = false ;
            SortCondition sc2 = new SortCondition(expr2, sc.getDirection()) ;
            conditions2.add(sc2) ;
        }

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    /** For any expression now in scope, wrap the op with a filter */
    private static Op insertAnyFilter(ExprList exprs, Set<Var> patternVarsScope, Op op)
    {
        for ( Iterator<Expr> iter = exprs.iterator() ; iter.hasNext() ; )
        {
            Expr expr = iter.next() ;
            // Cache
            Set<Var> exprVars = expr.getVarsMentioned() ;
            if ( patternVarsScope.containsAll(exprVars) )
            {
                if ( op == null )
                    op = OpTable.unit() ;
                op = OpFilter.filter(expr, op) ;

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        if ( exprs.isEmpty() )
            return op ;
    
        for ( Iterator<Expr> iter = exprs.iterator() ; iter.hasNext() ; )
        {
            Expr expr = iter.next() ;
            if ( op == null )
                op = OpTable.unit() ;
            op = OpFilter.filter(expr, op) ;
            iter.remove();
        }

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    private static PrefixMapping pmap = ARQConstants.getGlobalPrefixMap() ;
    
    private static void test(String string, String result)
    {
        Expr expr = ExprUtils.parse(string, pmap) ;
        NodeValue nv = expr.eval(null, new FunctionEnvBase()) ;
        Node r = NodeFactoryExtra.parseNode(result) ;
        NodeValue nvr = NodeValue.makeNode(r) ;
        
        assertTrue("Not same value: Expected: "+nvr+" : Actual = "+nv, NodeValue.sameAs(nvr, nv)) ;  
        // test result must be lexical form exact.

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com.hp.hpl.jena.sparql.algebra.optimize.TransformApplyInsideExprFunctionOp

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