void applySqlFilter()

in sql-gremlin/src/main/java/org/twilmes/sql/gremlin/adapter/converter/ast/nodes/select/GremlinSqlSelectSingle.java [289:318]

29 lines of code
8 McCabe index (conditional complexity)


    void applySqlFilter(SqlNode sqlNode, GraphTraversal<?, ?> graphTraversal) throws SQLException {
        if (sqlNode == null) {
            return;
        }

        if (sqlNode instanceof SqlBasicCall) {
            SqlBasicCall sqlBasicCall = (SqlBasicCall) sqlNode;
            if (sqlBasicCall.getOperator() instanceof SqlPrefixOperator) {
                SqlPrefixOperator sqlPrefixOperator = (SqlPrefixOperator) sqlBasicCall.getOperator();
                if (sqlPrefixOperator.kind.equals(SqlKind.NOT)) {
                    if (sqlBasicCall.getOperandList().size() == 1 && sqlBasicCall.operands.length == 1) {
                        GremlinSqlBinaryOperator.appendBooleanEquals(sqlMetadata, graphTraversal,
                                GremlinSqlFactory.createNodeCheckType(sqlBasicCall.operands[0],
                                        GremlinSqlIdentifier.class), false);
                        return;
                    }
                    throw SqlGremlinError.createNotSupported(SqlGremlinError.WHERE_NOT_ONLY_BOOLEAN);
                }
                throw SqlGremlinError.createNotSupported(SqlGremlinError.WHERE_UNSUPPORTED_PREFIX);
            }
            GremlinSqlFactory.createNodeCheckType(sqlNode, GremlinSqlBasicCall.class)
                    .generateTraversal(graphTraversal);
            return;
        } else if (sqlNode instanceof SqlIdentifier) {
            GremlinSqlBinaryOperator.appendBooleanEquals(sqlMetadata, graphTraversal,
                    GremlinSqlFactory.createNodeCheckType(sqlNode, GremlinSqlIdentifier.class), true);
            return;
        }
        throw SqlGremlinError.createNotSupported(SqlGremlinError.WHERE_BASIC_LITERALS);
    }