Package com.hp.hpl.jena.sparql.expr

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

264
265
266
267
268
269
270
271
272
273
274
            {
//                if ( binding.contains(v))
//                    // Already bound. No need to do anything because the
//                    // logical assignment will test value. 
//                    continue ;
                Expr expr = varExprList.getExpr(v) ;
                expr = expr.copySubstitute(binding) ;
                varExprList2.add(v, expr) ;
            }
            return varExprList2 ;
        }
View Full Code Here
618
619
620
621
622
623
624
625
626
627
628
                direction = Query.ORDER_ASCENDING ;
            else
                direction = Query.ORDER_DESCENDING ;
            item = item.getList().get(1) ;
        }
        Expr expr = BuilderExpr.buildExpr(item) ;
        if ( expr.isVariable() )
            return new SortCondition(expr.getExprVar().asVar(), direction) ;
        else
            return new SortCondition(expr, direction) ;
    }
View Full Code Here
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
    public Expr getExpr(Var var) { return exprs.get(var) ; }
   
    // Or Binding.get(var, NamedExprList)
    public Node get(Var var, Binding binding, FunctionEnv funcEnv)
    {
        Expr expr = exprs.get(var) ;
        if ( expr == null )
            return binding.get(var) ;
       
        try {
            NodeValue nv = expr.eval(binding, funcEnv) ;
            if ( nv == null )
                return null ;
            return nv.asNode() ;
        } catch (ExprEvalException ex)
        //{ Log.warn(this, "Eval failure "+expr+": "+ex.getMessage()) ; }
View Full Code Here
120
121
122
123
124
125
126
127
128
    public void addAll(VarExprList other)
    {
        for ( Iterator<Var> iter = other.vars.iterator() ; iter.hasNext() ; )
        {
            Var v = iter.next () ;
            Expr e = other.getExpr(v) ;
            add(v, e) ;
        }
    }
View Full Code Here
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
    {
        ExprList exprList = new ExprList() ;
        if ( pfArg.isNode() )
        {
            Node n = pfArg.getArg() ;
            Expr expr = ExprUtils.nodeToExpr(n) ;
            exprList.add(expr) ;
            return exprList ;
        }
       
        for ( Iterator<Node> iter = pfArg.getArgList().iterator() ; iter.hasNext() ; )
        {
            Node n = iter.next() ;
            Expr expr = ExprUtils.nodeToExpr(n) ;
            exprList.add(expr) ;
        }
        return exprList ;
    }
View Full Code Here
128
129
130
131
132
133
134
135
136
137
138
        BasicPattern bp = new BasicPattern() ;
        Triple t = new Triple(nodeVar, RDFS.label.asNode(), var2) ;
        bp.add(t) ;
        OpBGP op = new OpBGP(bp) ;
       
        Expr regex = new E_Regex(new ExprVar(var2.getName()), pattern, "i") ;
        Op filter = OpFilter.filter(regex, op) ;

        // ---- Evaluation
        if ( true )
        {
View Full Code Here
159
160
161
162
163
164
165
166
167
168
169
        ElementTriplesBlock elementBGP = new ElementTriplesBlock();
        Triple t = new Triple(nodeVar, RDFS.label.asNode(), var2) ;
        elementBGP.addTriple(t) ;
       
        // Regular expression for  regex(?hiddenVar, "pattern", "i")
        Expr regex = new E_Regex(new ExprVar(var2.getName()), pattern, "i") ;
       
        ElementGroup elementGroup = new ElementGroup() ;
        elementGroup.addElement(elementBGP) ;
        elementGroup.addElement(new ElementFilter(regex)) ;
        // Compile it.
View Full Code Here
60
61
62
63
64
65
66
67
68
69
70
       
        // ---- Build expression
        bp.add(new Triple(var_x, NodeFactory.createURI(BASE+"p"), var_z)) ;
        Op op = new OpBGP(bp) ;
        //Expr expr = ExprUtils.parse("?z < 2 ") ;
        Expr expr = new E_LessThan(new ExprVar(var_z), NodeValue.makeNodeInteger(2)) ;
        op = OpFilter.filter(expr, op) ;

        // ---- Example setup
        Model m = makeModel() ;
        m.write(System.out, "TTL") ;
View Full Code Here
65
66
67
68
69
70
71
72
73
74
75
       
        Triple t1 = new Triple(varX, DC.title.asNode(),  varTitle) ;
        elg.addTriplePattern(t1) ;
       
        // Adds a filter.  Need to wrap variable in a NodeVar.
        Expr expr = new E_Regex(new ExprVar(varTitle), "sparql", "i") ;
        ElementFilter filter = new  ElementFilter(expr) ;
        elg.addElementFilter(filter) ;
       
        // Attach the group to query. 
        query.setQueryPattern(elg) ;
View Full Code Here
152
153
154
155
156
157
158
159
160
161
162
        }
       
        if ( exprList2 != null && !exprList2.isEmpty() )
        {
            // These are left as disjunctions.
            Expr eOther = null ;
            for ( Expr e : exprList2 )
            {
                if ( eOther == null )
                    eOther = e ;
                else
View Full Code Here
TOP

Related Classes of com.hp.hpl.jena.sparql.expr.Expr

  • arq.examples.AlgebraExec
  • arq.examples.ExProg2
  • arq.examples.propertyfunction.labelSearch
  • arq.qexpr
  • com.hp.hpl.jena.query.Query
  • com.hp.hpl.jena.sdb.layout2.QueryCompiler2$FilterOptimizer
  • com.hp.hpl.jena.sparql.algebra.AlgebraGenerator
  • com.hp.hpl.jena.sparql.algebra.OpAsQuery$Converter
  • com.hp.hpl.jena.sparql.algebra.optimize.TransformApplyInsideExprFunctionOp
  • com.hp.hpl.jena.sparql.algebra.optimize.TransformExpandOneOf
    • Copyright © 2018 www.massapicom. All rights reserved.
    All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.