Package com.hp.hpl.jena.sparql.resultset

Examples of com.hp.hpl.jena.sparql.resultset.ResultSetException

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        rows = new ArrayList<Binding>(1000) ;
       
        checkContains(obj, kHead, kResults) ;

        if ( ! obj.hasKey(kHead) )    throw new ResultSetException("No 'head' for results") ;
        if ( ! obj.hasKey(kResults) ) throw new ResultSetException("No 'results' for results") ;
       
        // process head
        if ( ! obj.get(kHead).isObject() )
            throw new ResultSetException("Key 'head' must have a JSON object as value: found: "+obj.get(kHead)) ;
        JsonObject head = obj.get(kHead).getAsObject() ;
       
        // ---- Head
        // -- Link
        String link = stringOrNull(head, kLink) ;
        // -- Vars
        vars = parseVars(head) ;

        // ---- Results
        JsonObject results = obj.get(kResults).getAsObject() ;
        if ( ! results.get(kBindings).isArray() )
            throw new ResultSetException("'bindings' must be an array") ;
        JsonArray array = results.get(kBindings).getAsArray() ;
        Iterator<JsonValue> iter = array.iterator() ;
       
        for ( ; iter.hasNext() ; )
        {
            BindingMap b = BindingFactory.create() ;
            JsonValue v = iter.next() ;
            if ( ! v.isObject() )
                throw new ResultSetException("Entry in 'bindings' array must be an object {}")  ;
            JsonObject x = v.getAsObject() ;
            Set<String> varNames = x.keys() ;
            for ( String vn : varNames )
            {
                if ( ! vars.contains(vn) )
                    ; // Warning
                JsonValue vt = x.get(vn) ;
                if ( ! vt.isObject() )
                    throw new ResultSetException("Binding for variable '"+vn+"' is not a JSON object: "+vt)  ;
                Node n = parseOneTerm(vt.getAsObject()) ;
                b.add(Var.alloc(vn), n) ;
            }
            rows.add(b) ;
        }
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    }
   
    private List<Var> parseVars(JsonObject obj)
    {
        if ( ! obj.get(kVars).isArray() )
            throw new ResultSetException("Key 'vars' must be a JSON array") ;
        JsonArray a = obj.get(kVars).getAsArray() ;
        Iterator<JsonValue> iter = a.iterator() ;
        List<Var> vars = new ArrayList<Var>() ;
        for ( ; iter.hasNext() ; )
        {
            JsonValue v = iter.next() ;
            if ( ! v.isString() )
                throw new ResultSetException("Entries in vars array must be strings") ;
            Var var = Var.alloc(v.getAsString().value()) ;
            vars.add(var) ;
        }
        return vars ;
    }
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        if ( kLiteral.equals(type) || kTypedLiteral.equals(type) )
        {
            String lang = stringOrNull(term, kXmlLang) ;
            String dtStr = stringOrNull(term, kDatatype) ;
            if ( lang != null && dtStr != null )
                throw new ResultSetException("Both language and datatype defined: "+term) ;
            RDFDatatype dt = TypeMapper.getInstance().getSafeTypeByName(dtStr) ;
            return Node.createLiteral(v, lang, dt)  ;
        }
       
        if ( kBnode.equals(type) )
            return labelMap.get(null, v) ;
       
        throw new ResultSetException("Object key not recognized as valid for an RDF term: "+term) ;
    }
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    private static String stringOrNull(JsonObject obj, String key)
    {
        JsonValue v = obj.get(key) ;
        if ( v == null ) return null ;
        if ( ! v.isString() )
            throw new ResultSetException("Not a string") ;
        return v.getAsString().value();
       
    }
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    {
        List<String> x = Arrays.asList(keys) ;
        for ( String k : term.keys() )
        {
            if ( !x.contains(k) )
                throw new ResultSetException("Expected only object keys "+Arrays.asList(keys)+" but encountered '"+k+"'") ;
        }
    }
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        rows = new ArrayList<Binding>(1000) ;
       
        checkContains(obj, kHead, kResults) ;

        if ( ! obj.hasKey(kHead) )    throw new ResultSetException("No 'head' for results") ;
        if ( ! obj.hasKey(kResults) ) throw new ResultSetException("No 'results' for results") ;
       
        // process head
        if ( ! obj.get(kHead).isObject() )
            throw new ResultSetException("Key 'head' must have a JSON object as value: found: "+obj.get(kHead)) ;
        JsonObject head = obj.get(kHead).getAsObject() ;
       
        // ---- Head
        // -- Link
        String link = stringOrNull(head, kLink) ;
        // -- Vars
        vars = parseVars(head) ;

        // ---- Results
        JsonObject results = obj.get(kResults).getAsObject() ;
        if ( ! results.get(kBindings).isArray() )
            throw new ResultSetException("'bindings' must be an array") ;
        JsonArray array = results.get(kBindings).getAsArray() ;
        Iterator<JsonValue> iter = array.iterator() ;
       
        for ( ; iter.hasNext() ; )
        {
            BindingMap b = BindingFactory.create() ;
            JsonValue v = iter.next() ;
            if ( ! v.isObject() )
                throw new ResultSetException("Entry in 'bindings' array must be an object {}")  ;
            JsonObject x = v.getAsObject() ;
            Set<String> varNames = x.keys() ;
            for ( String vn : varNames )
            {
                if ( ! vars.contains(vn) )
                    ; // Warning
                JsonValue vt = x.get(vn) ;
                if ( ! vt.isObject() )
                    throw new ResultSetException("Binding for variable '"+vn+"' is not a JSON object: "+vt)  ;
                Node n = parseOneTerm(vt.getAsObject()) ;
                b.add(Var.alloc(vn), n) ;
            }
            rows.add(b) ;
        }
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    }
   
    private List<Var> parseVars(JsonObject obj)
    {
        if ( ! obj.get(kVars).isArray() )
            throw new ResultSetException("Key 'vars' must be a JSON array") ;
        JsonArray a = obj.get(kVars).getAsArray() ;
        Iterator<JsonValue> iter = a.iterator() ;
        List<Var> vars = new ArrayList<Var>() ;
        for ( ; iter.hasNext() ; )
        {
            JsonValue v = iter.next() ;
            if ( ! v.isString() )
                throw new ResultSetException("Entries in vars array must be strings") ;
            Var var = Var.alloc(v.getAsString().value()) ;
            vars.add(var) ;
        }
        return vars ;
    }
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        if ( kLiteral.equals(type) || kTypedLiteral.equals(type) )
        {
            String lang = stringOrNull(term, kXmlLang) ;
            String dtStr = stringOrNull(term, kDatatype) ;
            if ( lang != null && dtStr != null )
                throw new ResultSetException("Both language and datatype defined: "+term) ;
            RDFDatatype dt = TypeMapper.getInstance().getSafeTypeByName(dtStr) ;
            return Node.createLiteral(v, lang, dt)  ;
        }
       
        if ( kBnode.equals(type) )
            return labelMap.get(null, v) ;
       
        throw new ResultSetException("Object key not recognized as valid for an RDF term: "+term) ;
    }
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    private static String stringOrNull(JsonObject obj, String key)
    {
        JsonValue v = obj.get(key) ;
        if ( v == null ) return null ;
        if ( ! v.isString() )
            throw new ResultSetException("Not a string") ;
        return v.getAsString().value();
       
    }
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    {
        List<String> x = Arrays.asList(keys) ;
        for ( String k : term.keys() )
        {
            if ( !x.contains(k) )
                throw new ResultSetException("Expected only object keys "+Arrays.asList(keys)+" but encountered '"+k+"'") ;
        }
    }
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Related Classes of com.hp.hpl.jena.sparql.resultset.ResultSetException

  • com.hp.hpl.jena.sparql.resultset.JSONInput
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