| /** |
| * 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. |
| */ |
| package org.apache.atlas.query; |
| |
| import org.apache.atlas.query.Expressions.Expression; |
| |
| import java.util.Arrays; |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| |
| public class QueryParser { |
| private static final Set<String> RESERVED_KEYWORDS = |
| new HashSet<>(Arrays.asList("[", "]", "(", ")", "=", "<", ">", "!=", "<=", ">=", ",", "and", "or", "+", "-", |
| "*", "/", ".", "select", "from", "where", "groupby", "loop", "isa", "is", "has", |
| "as", "times", "withPath", "limit", "offset", "orderby", "count", "max", "min", |
| "sum", "by", "order", "like")); |
| |
| public static boolean isKeyword(String word) { |
| return RESERVED_KEYWORDS.contains(word); |
| } |
| |
| public static Expression apply(String queryStr, QueryParams params) { |
| Expression ret = null; |
| |
| return ret; |
| } |
| } |