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[Refactor](dialect) Add sql dialect converter plugins (apache#28890)
The current logic for SQL dialect conversion is all in the `fe-core` module, which may lead to the following issues: - Changes to the dialect conversion logic may occur frequently, requiring users to upgrade the Doris version frequently within the fe-core module, leading to a longer change cycle. - The cost of customized development is high, requiring users to replace the fe-core JAR package. Turning it into a plugin can address the above issues properly.
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101 changes: 101 additions & 0 deletions
101
fe/fe-core/src/main/java/org/apache/doris/nereids/parser/Dialect.java
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| // 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. | ||
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| package org.apache.doris.nereids.parser; | ||
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| import javax.annotation.Nullable; | ||
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| /** | ||
| * ParseDialect enum, maybe support other dialect. | ||
| */ | ||
| public enum Dialect { | ||
| /** | ||
| * Doris parser dialect | ||
| */ | ||
| DORIS("doris"), | ||
| /** | ||
| * Trino parser dialect | ||
| */ | ||
| TRINO("trino"), | ||
| /** | ||
| * Presto parser dialect | ||
| */ | ||
| PRESTO("presto"), | ||
| /** | ||
| * Spark sql parser dialect | ||
| */ | ||
| SPARK_SQL("spark_sql"), | ||
| /** | ||
| * Hive parser dialect | ||
| */ | ||
| HIVE("hive"), | ||
| /** | ||
| * Alibaba max compute parser dialect | ||
| */ | ||
| MAX_COMPUTE("max_compute"), | ||
| /** | ||
| * Mysql parser dialect | ||
| */ | ||
| MYSQL("mysql"), | ||
| /** | ||
| * Postgresql parser dialect | ||
| */ | ||
| POSTGRESQL("postgresql"), | ||
| /** | ||
| * Sqlserver parser dialect | ||
| */ | ||
| SQLSERVER("sqlserver"), | ||
| /** | ||
| * Clickhouse parser dialect | ||
| */ | ||
| CLICKHOUSE("clickhouse"), | ||
| /** | ||
| * Sap hana parser dialect | ||
| */ | ||
| SAP_HANA("sap_hana"), | ||
| /** | ||
| * OceanBase parser dialect | ||
| */ | ||
| OCEANBASE("oceanbase"); | ||
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| public static final int MAX_DIALECT_SIZE = Dialect.values().length; | ||
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| private final String dialectName; | ||
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| Dialect(String dialectName) { | ||
| this.dialectName = dialectName; | ||
| } | ||
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| public String getDialectName() { | ||
| return dialectName; | ||
| } | ||
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| /** | ||
| * Get dialect by name | ||
| */ | ||
| public static @Nullable Dialect getByName(String dialectName) { | ||
| if (dialectName == null) { | ||
| return null; | ||
| } | ||
| for (Dialect dialect : Dialect.values()) { | ||
| if (dialect.getDialectName().equals(dialectName.toLowerCase())) { | ||
| return dialect; | ||
| } | ||
| } | ||
| return null; | ||
| } | ||
| } |
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