Examples with HL7QueryParsingException org.apache.nifi.hl7.query.exception.HL7QueryParsingException used on opensource projects

Example 1 with HL7QueryParsingException

use of org.apache.nifi.hl7.query.exception.HL7QueryParsingException in project nifi by apache.

the class HL7Query method buildReferenceEvaluator.

private Evaluator<?> buildReferenceEvaluator(final Tree tree) {
    switch(tree.getType()) {
        case MESSAGE:
            return new MessageEvaluator();
        case SEGMENT_NAME:
            return new SegmentEvaluator(new StringLiteralEvaluator(tree.getText()));
        case IDENTIFIER:
            return new DeclaredReferenceEvaluator(new StringLiteralEvaluator(tree.getText()));
        case DOT:
            final Tree firstChild = tree.getChild(0);
            final Tree secondChild = tree.getChild(1);
            return new DotEvaluator(buildReferenceEvaluator(firstChild), buildIntegerEvaluator(secondChild));
        case STRING_LITERAL:
            return new StringLiteralEvaluator(tree.getText());
        case NUMBER:
            return new IntegerLiteralEvaluator(Integer.parseInt(tree.getText()));
        default:
            throw new HL7QueryParsingException("Failed to build evaluator for " + tree.getText());
    }
}

Example 2 with HL7QueryParsingException

use of org.apache.nifi.hl7.query.exception.HL7QueryParsingException in project nifi by apache.

the class HL7Query method compile.

public static HL7Query compile(final String query) {
    try {
        final CommonTokenStream lexerTokenStream = createTokenStream(query);
        final HL7QueryParser parser = new HL7QueryParser(lexerTokenStream);
        final Tree tree = (Tree) parser.query().getTree();
        return new HL7Query(tree, query);
    } catch (final HL7QueryParsingException e) {
        throw e;
    } catch (final Exception e) {
        throw new HL7QueryParsingException(e);
    }
}

Example 3 with HL7QueryParsingException

use of org.apache.nifi.hl7.query.exception.HL7QueryParsingException in project nifi by apache.

the class HL7Query method createTokenStream.

private static CommonTokenStream createTokenStream(final String expression) throws HL7QueryParsingException {
    final CharStream input = new ANTLRStringStream(expression);
    final HL7QueryLexer lexer = new HL7QueryLexer(input);
    return new CommonTokenStream(lexer);
}