Examples with TDBException org.apache.jena.tdb.TDBException used on opensource projects

Example 1 with TDBException

use of org.apache.jena.tdb.TDBException in project jena by apache.

the class NodecSSE method encode.

@Override
public int encode(Node node, ByteBuffer bb, PrefixMapping pmap) {
    String str = null;
    if (node.isURI()) {
        // Pesky spaces etc
        String x = StrUtils.encodeHex(node.getURI(), MarkerChar, invalidIRIChars);
        if (x != node.getURI())
            node = NodeFactory.createURI(x);
    }
    if (node.isLiteral() && NodeUtils.isLangString(node)) {
        // Check syntactically valid.
        String lang = node.getLiteralLanguage();
        if (!LangTag.check(lang))
            throw new TDBException("bad language tag: " + node);
    }
    if (node.isBlank() && !onlySafeBNodeLabels) {
        // Special case.
        str = "_:" + node.getBlankNodeLabel();
    }
    // Node->String
    if (str == null)
        str = NodeFmtLib.str(node, (String) null, pmap0);
    // String -> bytes ;
    BlockUTF8.fromChars(str, bb);
    bb.flip();
    return bb.limit();
}

Example 2 with TDBException

use of org.apache.jena.tdb.TDBException in project jena by apache.

the class NodecSSE method decode.

@Override
public Node decode(ByteBuffer bb, PrefixMapping pmap) {
    // Ideally, this would be straight from the byte buffer.
    // But currently we go bytes -> string -> node 
    // Byte -> String
    String str = BlockUTF8.toString(bb);
    // Easy cases.
    if (str.startsWith("_:")) {
        // Must be done this way.
        // In particular, bnode labels can contain ":" from Jena
        // TokenizerText does not recognize these.
        str = str.substring(2);
        return NodeFactory.createBlankNode(str);
    }
    if (str.startsWith("<")) {
        // Do directly.
        // (is it quicker?)
        str = str.substring(1, str.length() - 1);
        str = StrUtils.unescapeString(str);
        str = StrUtils.decodeHex(str, MarkerChar);
        return NodeFactory.createURI(str);
    }
    Tokenizer tokenizer = TokenizerFactory.makeTokenizerString(str);
    if (!tokenizer.hasNext())
        throw new TDBException("Failed to tokenise: " + str);
    Token t = tokenizer.next();
    try {
        Node n = t.asNode();
        if (n == null)
            throw new TDBException("Not a node: " + str);
        return n;
    } catch (RiotException ex) {
        throw new TDBException("Bad string for node: " + str);
    }
}

Example 3 with TDBException

use of org.apache.jena.tdb.TDBException in project jena by apache.

the class TupleTable method find.

/** Find all matching tuples - a slot of NodeId.NodeIdAny (or null) means match any */
public Iterator<Tuple<NodeId>> find(Tuple<NodeId> pattern) {
    if (tupleLen != pattern.len())
        throw new TDBException(format("Mismatch: finding tuple of length %d in a table of tuples of length %d", pattern.len(), tupleLen));
    int numSlots = 0;
    // Canonical form. 
    for (int i = 0; i < tupleLen; i++) {
        NodeId x = pattern.get(i);
        if (!NodeId.isAny(x))
            numSlots++;
    }
    if (numSlots == 0)
        return scanAllIndex.all();
    int indexNumSlots = 0;
    TupleIndex index = null;
    for (TupleIndex idx : indexes) {
        if (idx != null) {
            int w = idx.weight(pattern);
            if (w > indexNumSlots) {
                indexNumSlots = w;
                index = idx;
            }
        }
    }
    if (index == null)
        // No index at all.  Scan.
        index = indexes[0];
    return index.find(pattern);
}

Example 4 with TDBException

use of org.apache.jena.tdb.TDBException in project jena by apache.

the class NodeLib method encodeStore.

public static long encodeStore(Node node, ObjectFile file) {
    // Buffer pool?
    // Nodes can be writtern during reads.
    // Make sure this operation is sync'ed. 
    int maxSize = nodec.maxSize(node);
    Block block = file.allocWrite(maxSize);
    try {
        int len = nodec.encode(node, block.getByteBuffer(), null);
        file.completeWrite(block);
        return block.getId();
    } catch (TDBException ex) {
        file.abortWrite(block);
        throw ex;
    }
}

Example 5 with TDBException

use of org.apache.jena.tdb.TDBException in project jena by apache.

the class NodeLib method setHash.

public static void setHash(Hash h, Node n) {
    NodeType nt = NodeType.lookup(n);
    switch(nt) {
        case URI:
            hash(h, n.getURI(), null, null, nt);
            return;
        case BNODE:
            hash(h, n.getBlankNodeLabel(), null, null, nt);
            return;
        case LITERAL:
            String dt = n.getLiteralDatatypeURI();
            if (NodeUtils.isSimpleString(n) || NodeUtils.isLangString(n)) {
                // RDF 1.1 : No datatype for:
                //   xsd:String as simple literals
                //   rdf:langString and @ 
                dt = null;
            }
            hash(h, n.getLiteralLexicalForm(), n.getLiteralLanguage(), dt, nt);
            return;
        case OTHER:
            throw new TDBException("Attempt to hash something strange: " + n);
    }
    throw new TDBException("NodeType broken: " + n);
}