Package com.hp.hpl.jena.sparql.core

Examples of com.hp.hpl.jena.sparql.core.Var$NotAVariableException

40
41
42
43
44
45
46
47
48
49
50
51
{
    public static void main (String[] argv)
    {
        String BASE = "http://example/" ;
        BasicPattern bp = new BasicPattern() ;
        Var var_x = Var.alloc("x") ;
        Var var_z = Var.alloc("z") ;
       
        // ---- Build expression
        bp.add(new Triple(var_x, Node.createURI(BASE+"p"), var_z)) ;
        Op op = new OpBGP(bp) ;
        //Expr expr = ExprUtils.parse("?z < 2 ") ;
View Full Code Here
46
47
48
49
50
51
52
53
54
55
56
57
       
        // See also ExProg1
       
        ElementGroup elg = new ElementGroup() ;
       
        Var varTitle = Var.alloc("title") ;
        Var varX = Var.alloc("x") ;
       
        Triple t1 = new Triple(varX, DC.title.asNode(),  varTitle) ;
        elg.addTriplePattern(t1) ;
       
        // Adds a filter.  Need to wrap variable in a NodeVar.
View Full Code Here
44
45
46
47
48
49
50
51
52
53
54
55
       
        // Build pattern
       
        ElementGroup elg = new ElementGroup() ;
       
        Var varTitle = Var.alloc("title") ;
        Var varX = Var.alloc("x") ;
       
        Triple t1 = new Triple(varX, DC.title.asNode(),  varTitle) ;
        elg.addTriplePattern(t1) ;
       
        // Don't use bNodes for anon variables.  The conversion is done in parsing.
View Full Code Here
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
            // Old (ARQ 1) way - not recommended.
            return buildSyntax(input, nodeVar, pattern, execCxt) ;
       
        // Better
        // Build a SPARQL algebra expression
        Var var2 = createNewVar() ;                     // Hidden variable
       
        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
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
   
    // Build SPARQL syntax and compile it.
    // Not recommended.
    private QueryIterator buildSyntax(QueryIterator input, Node nodeVar, String pattern, ExecutionContext execCxt)
    {
        Var var2 = createNewVar() ;
        // Triple patterns for   ?x rdfs:label ?hiddenVar
        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
491
492
493
494
495
496
497
498
499
500
501
            // Aggregators are broken up in the algebra, split between a
            // group and an assignment (extend or assign) using a generated var.
            // We record them here and insert later.
            for (ExprAggregator ea : a) {
                // Substitute generated var for actual
                Var givenVar = ea.getAggVar().asVar();
                // Copy aggregator across (?)
                Expr myAggr = query.allocAggregate(ea.getAggregator());
                varExpression.put(givenVar, myAggr);
            }
View Full Code Here
242
243
244
245
246
247
248
249
250
251
252
            //And the aggregators...
            aggs2 = new ArrayList<ExprAggregator>() ;
            for ( ExprAggregator agg : aggs )
            {
                Aggregator aggregator = agg.getAggregator() ;
                Var v = agg.getVar() ;
               
                // Variable associated with the aggregate
                Expr eVar = agg.getAggVar() ;   // Not .getExprVar()
                Expr eVar2 = ExprTransformer.transform(exprTransform, eVar) ;
                if ( eVar != eVar2 )
View Full Code Here
126
127
128
129
130
131
132
133
134
135
136
        ExprFunction2 eq = (ExprFunction2)e ;
        Expr left = eq.getArg1() ;
        Expr right = eq.getArg2() ;

        Var var = null ;
        NodeValue constant = null ;

        if ( left.isVariable() && right.isConstant() )
        {
            var = left.asVar() ;
View Full Code Here
52
53
54
55
56
57
58
59
60
61
62
       
        List<Var> vars = v.projectVars;
        query.setQueryResultStar(vars.isEmpty()); // SELECT * unless we are projecting
        Iterator<Var> iter = vars.iterator();
        for (; iter.hasNext();) {
            Var var = iter.next();
            if (v.varExpression.containsKey(var))
                query.addResultVar(var, v.varExpression.get(var));
            else
                query.addResultVar(var);
        }
View Full Code Here
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
            while( ! lookingAt(TokenType.DOT) )
            {
                if ( i >= vars.size() )
                    exception(peekToken(), "Too many items in a line.  Expected "+vars.size()) ;
               
                Var v = vars.get(i) ;
               
                Token token = nextToken() ;
                if ( ! token.hasType(TokenType.MINUS ) )
                {
                    Node n ;
                    // One case; VARS line then *
                    if ( token.hasType(TokenType.STAR ) || ( token.isCtlCode() && token.getCntrlCode() == -1 ) )
                        n = lastLine.get(v) ;
                    else if ( token.hasType(TokenType.BNODE) )
                        n = Node.createAnon(new AnonId(NodeFmtLib.decodeBNodeLabel(token.getImage()))) ;
                    else
                        n = profile.create(null, token) ;
                    binding.add(v, n) ;
                }
                i++ ;
            }
            if ( eof() )
                exception(peekToken(), "Line does not end with a DOT") ;
           
            Token dot = nextToken() ;
           
            if ( i != vars.size() )
            {
                Var v = vars.get(vars.size()-1) ;
                exception(dot, "Too many items in a line.  Expected "+vars.size()) ;
            }
            lastLine = binding ;
            return binding ;
        }
View Full Code Here
TOP

Related Classes of com.hp.hpl.jena.sparql.core.Var$NotAVariableException

  • arq.examples.AlgebraExec
  • arq.examples.ExProg1
  • arq.examples.ExProg2
  • arq.examples.propertyfunction.labelSearch
  • com.clarkparsia.pellet.sparqldl.jena.SparqlDLResultSet
  • com.clarkparsia.pellet.sparqldl.jena.SparqlDLStage$PelletQueryIterator
  • com.clarkparsia.pellet.test.query.TestMiscSPARQL
  • com.hp.hpl.jena.graph.Node
  • com.hp.hpl.jena.sdb.compiler.TransformSDB
  • com.hp.hpl.jena.sdb.core.sqlnode.SqlSelectBlock
    • 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.