| # Licensed to the Apache Software Foundation (ASF) under one |
| # or more contributor license agreements. See the NOTICE file |
| # distributed with this work for additional information |
| # regarding copyright ownership. The ASF licenses this file |
| # to you under the Apache License, Version 2.0 (the |
| # "License"); you may not use this file except in compliance |
| # with the License. You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, |
| # software distributed under the License is distributed on an |
| # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| # KIND, either express or implied. See the License for the |
| # specific language governing permissions and limitations |
| # under the License. |
| |
| # Common patterns that ought to be the same throughout the framework should be placed |
| # here. |
| |
| import re |
| |
| # http://www.cloudera.com/content/www/en-us/documentation/enterprise/latest/topics/impala_identifiers.html |
| VALID_IMPALA_IDENTIFIER_REGEX = re.compile(r'^[a-zA-Z][a-zA-Z0-9_]{,127}$') |
| |
| |
| def is_valid_impala_identifier(identifier): |
| """Return True if identifier is a valid Impala identifier, False otherwise.""" |
| return VALID_IMPALA_IDENTIFIER_REGEX.match(identifier) is not None |
