Examples with Item org.apache.jena.sparql.sse.Item used on opensource projects

Example 31 with Item

use of org.apache.jena.sparql.sse.Item in project jena by apache.

the class BuilderOp method buildBGP.

private static BasicPattern buildBGP(ItemList list) {
    // 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;
}

Example 32 with Item

use of org.apache.jena.sparql.sse.Item in project jena by apache.

the class BuilderPrefixMapping method build.

public static void build(PrefixMapping newMappings, Item elt) {
    if (!elt.isList())
        BuilderLib.broken(elt, "Prefix mapping requires a list of pairs", elt);
    ItemList prefixes = elt.getList();
    // Strip (prefixmapping  ...)
    if (elt.isTaggedIgnoreCase(Tags.tagPrefixMap) || elt.isTaggedIgnoreCase(Tags.tagPrefixMapping)) {
        BuilderLib.checkLength(2, elt.getList(), "Not of length 2" + elt.shortString());
        // drop the tag
        prefixes = prefixes.cdr();
    }
    for (Item pair : prefixes) {
        if (!pair.isList() || pair.getList().size() != 2)
            BuilderLib.broken(pair, "Not a prefix/IRI pair");
        Item prefixItem = pair.getList().get(0);
        Item iriItem = pair.getList().get(1);
        // Maybe a Node (fake prefixed name) or a Symbol, depending on parser set up.
        String prefix = null;
        // -- Prefix as symbol
        if (prefixItem.isSymbol())
            prefix = prefixItem.getSymbol();
        if (prefix == null)
            BuilderLib.broken(pair, "Prefix part not recognized: " + prefixItem);
        if (!prefix.endsWith(":"))
            BuilderLib.broken(pair, "Prefix part does not end with a ':': " + pair);
        prefix = prefix.substring(0, prefix.length() - 1);
        if (StrUtils.contains(prefix, ":"))
            BuilderLib.broken(pair, "Prefix itself contains a ':' : " + pair);
        // -- /Prefix
        Node iriNode = iriItem.getNode();
        if (iriNode == null || !iriNode.isURI())
            BuilderLib.broken(pair, "Not an IRI: " + iriItem);
        String iri = iriNode.getURI();
        newMappings.setNsPrefix(prefix, iri);
    }
}

Example 33 with Item

use of org.apache.jena.sparql.sse.Item in project jena by apache.

the class BuilderNode method buildVars.

public static List<Var> buildVars(ItemList list) {
    list = BuilderLib.skipTag(list, Tags.tagVars);
    List<Var> x = new ArrayList<>();
    for (int i = 0; i < list.size(); i++) {
        Item item = list.get(i);
        Var var = BuilderNode.buildVar(item);
        x.add(Var.alloc(item.getNode()));
    }
    return x;
}

Example 34 with Item

use of org.apache.jena.sparql.sse.Item in project jena by apache.

the class BuilderNode method buildVarList.

public static List<Var> buildVarList(ItemList list) {
    if (list.size() > 0 && list.getFirst().isSymbol(Tags.tagVars))
        list = list.cdr();
    List<Var> vars = new ArrayList<>();
    for (Item x : list) {
        Var v = buildVar(x);
        vars.add(v);
    }
    return vars;
}

Example 35 with Item

use of org.apache.jena.sparql.sse.Item in project jena by apache.

the class BuilderNode method buildNodeList.

public static List<Node> buildNodeList(ItemList list) {
    List<Node> nodes = new ArrayList<>();
    for (Item item : list) {
        Node v = buildNode(item);
        nodes.add(v);
    }
    return nodes;
}