Examples with ASTBaseDecl org.eclipse.rdf4j.query.parser.sparql.ast.ASTBaseDecl used on opensource projects

Example 1 with ASTBaseDecl

use of org.eclipse.rdf4j.query.parser.sparql.ast.ASTBaseDecl in project rdf4j by eclipse.

the class BaseDeclProcessor method process.

/**
 * Resolves relative URIs in the supplied query model using either the specified <tt>externalBaseURI</tt>
 * or, if this parameter is <tt>null</tt>, the base URI specified in the query model itself.
 *
 * @param qc
 *        The query model to resolve relative URIs in.
 * @param externalBaseURI
 *        The external base URI to use for resolving relative URIs, or <tt>null</tt> if the base URI that
 *        is specified in the query model should be used.
 * @throws IllegalArgumentException
 *         If an external base URI is specified that is not an absolute URI.
 * @throws MalformedQueryException
 *         If the base URI specified in the query model is not an absolute URI.
 */
public static void process(ASTOperationContainer qc, String externalBaseURI) throws MalformedQueryException {
    ParsedIRI parsedBaseURI = null;
    // Use the query model's own base URI, if available
    ASTBaseDecl baseDecl = qc.getBaseDecl();
    if (baseDecl != null) {
        try {
            parsedBaseURI = new ParsedIRI(baseDecl.getIRI());
        } catch (URISyntaxException e) {
            throw new MalformedQueryException(e);
        }
        if (!parsedBaseURI.isAbsolute()) {
            throw new MalformedQueryException("BASE IRI is not an absolute IRI: " + externalBaseURI);
        }
    } else if (externalBaseURI != null) {
        // Use external base URI if the query doesn't contain one itself
        try {
            parsedBaseURI = new ParsedIRI(externalBaseURI);
        } catch (URISyntaxException e) {
            throw new MalformedQueryException(e);
        }
        if (!parsedBaseURI.isAbsolute()) {
            throw new IllegalArgumentException("Supplied base URI is not an absolute IRI: " + externalBaseURI);
        }
    } else {
    // FIXME: use the "Default Base URI"?
    }
    if (parsedBaseURI != null) {
        ASTUnparsedQuadDataBlock dataBlock = null;
        if (qc.getOperation() instanceof ASTInsertData) {
            ASTInsertData insertData = (ASTInsertData) qc.getOperation();
            dataBlock = insertData.jjtGetChild(ASTUnparsedQuadDataBlock.class);
        } else if (qc.getOperation() instanceof ASTDeleteData) {
            ASTDeleteData deleteData = (ASTDeleteData) qc.getOperation();
            dataBlock = deleteData.jjtGetChild(ASTUnparsedQuadDataBlock.class);
        }
        if (dataBlock != null) {
            final String baseURIDeclaration = "BASE <" + parsedBaseURI + "> \n";
            dataBlock.setDataBlock(baseURIDeclaration + dataBlock.getDataBlock());
        } else {
            RelativeIRIResolver visitor = new RelativeIRIResolver(parsedBaseURI);
            try {
                qc.jjtAccept(visitor, null);
            } catch (VisitorException e) {
                throw new MalformedQueryException(e);
            }
        }
    }
}