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

Example 21 with Item

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

the class ParseHandlerPlain method emitIRI.

@Override
public void emitIRI(int line, int column, String iriStr) {
    Node n = NodeFactory.createURI(iriStr);
    Item item = Item.createNode(n, line, column);
    listAdd(item);
}

Example 22 with Item

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

the class BuilderExpr method buildFunctionCall.

protected static Expr buildFunctionCall(ItemList list) {
    Item head = list.get(0);
    Node node = head.getNode();
    if (node.isBlank())
        BuilderLib.broken(head, "Blank node for function call!");
    if (node.isLiteral())
        BuilderLib.broken(head, "Literal node for function call!");
    ExprList args = buildExprListUntagged(list, 1);
    // Args
    return new E_Function(node.getURI(), args);
}

Example 23 with Item

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

the class BuilderExpr method buildKnownFunction.

protected Expr buildKnownFunction(ItemList list) {
    if (list.size() == 0)
        BuilderLib.broken(list, "Empty list for expression");
    Item item = list.get(0);
    String tag = item.getSymbol();
    if (tag == null)
        BuilderLib.broken(item, "Null tag");
    Build b = findBuild(tag);
    if (b == null)
        BuilderLib.broken(item, "No known symbol for " + tag);
    return b.make(list);
}

Example 24 with Item

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

the class BuilderGraph method buildDataset.

public static DatasetGraph buildDataset(DatasetGraph dsg, ItemList list) {
    BuilderLib.checkTag(list, Tags.tagDataset);
    list = list.cdr();
    for (Item item : list) {
        if (!item.isTagged(Tags.tagGraph)) {
            // Not (graph ...) so it's (quad), short form quad or an error.
            Quad q = BuilderGraph.buildQuad(item.getList(), "Expected (graph ...) or a quad () as elements of a dataset");
            dsg.add(q);
            continue;
        }
        Node name = null;
        ItemList graphContent = item.getList().cdr();
        if (!graphContent.isEmpty() && graphContent.car().isNode()) {
            name = graphContent.car().getNode();
            graphContent = graphContent.cdr();
        }
        Graph g;
        if (name == null) {
            g = dsg.getDefaultGraph();
            if (g == null) {
                g = GraphFactory.createDefaultGraph();
                dsg.setDefaultGraph(g);
            }
        } else {
            g = dsg.getGraph(name);
            if (g == null) {
                g = GraphFactory.createDefaultGraph();
                dsg.addGraph(name, g);
            }
        }
        BuilderGraph.buildGraph(g, graphContent);
    }
    return dsg;
}

Example 25 with Item

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

the class BuilderBinding method buildBinding.

private static Binding buildBinding(ItemList list) {
    // (row or (binding
    if (list.size() == 0)
        BuilderLib.broken(list, "Empty list");
    Item head = list.get(0);
    if (!head.isSymbolIgnoreCase(Tags.tagRow) && !head.isSymbolIgnoreCase(Tags.tagBinding))
        BuilderLib.broken(list, "Does not start (" + Tags.tagRow + " ...) or (" + Tags.tagBinding + " ...)", head);
    BindingMap binding = BindingFactory.create();
    for (int i = 1; i < list.size(); i++) {
        Item item = list.get(i);
        BuilderLib.checkList(item, "Attempt to build a binding pair from non-list: " + item);
        ItemList pair = item.getList();
        BuilderLib.checkLength(2, pair, "Need a pair for a binding");
        Var v = BuilderNode.buildVar(pair.get(0));
        Item cdr = pair.get(1);
        // undef
        if (cdr.isSymbolIgnoreCase(Tags.tagUndef) || cdr.isSymbolIgnoreCase(Tags.tagNull))
            continue;
        BuilderLib.checkNode(cdr);
        Node node = BuilderNode.buildNode(item.getList().get(1));
        if (node == null)
            BuilderLib.broken(item.getList().get(1), "Null node from " + item.getList().get(1));
        if (node.isVariable())
            BuilderLib.broken(item.getList().get(1), "No variables as table values: " + FmtUtils.stringForNode(node));
        if (!node.isConcrete())
            BuilderLib.broken(item.getList().get(1), "Ony concrete nodes as table values: " + FmtUtils.stringForNode(node));
        binding.add(v, node);
    }
    return binding;
}