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[FLINK-14490][table-planner] Extract CalciteParser from FlinkPlannerImpl
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71
...ble-planner-blink/src/main/java/org/apache/flink/table/planner/calcite/CalciteParser.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,71 @@ | ||
| /* | ||
| * 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.flink.table.planner.calcite; | ||
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| import org.apache.flink.table.api.SqlParserException; | ||
|
|
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| import org.apache.calcite.sql.SqlIdentifier; | ||
| import org.apache.calcite.sql.SqlNode; | ||
| import org.apache.calcite.sql.parser.SqlParseException; | ||
| import org.apache.calcite.sql.parser.SqlParser; | ||
|
|
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| /** | ||
| * Thin wrapper around {@link SqlParser} that does exception conversion and {@link SqlNode} casting. | ||
| */ | ||
| public class CalciteParser { | ||
| private final SqlParser.Config config; | ||
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|
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| public CalciteParser(SqlParser.Config config) { | ||
| this.config = config; | ||
| } | ||
|
|
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| /** | ||
| * Parses a SQL statement into a {@link SqlNode}. The {@link SqlNode} is not yet validated. | ||
| * | ||
| * @param sql a sql string to parse | ||
| * @return a parsed sql node | ||
| * @throws SqlParserException if an exception is thrown when parsing the statement | ||
| */ | ||
| public SqlNode parse(String sql) { | ||
| try { | ||
| SqlParser parser = SqlParser.create(sql, config); | ||
| return parser.parseStmt(); | ||
| } catch (SqlParseException e) { | ||
| throw new SqlParserException("SQL parse failed. " + e.getMessage()); | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Parses a SQL string as an identifier into a {@link SqlIdentifier}. | ||
| * | ||
| * @param identifier a sql string to parse as an identifier | ||
| * @return a parsed sql node | ||
| * @throws SqlParserException if an exception is thrown when parsing the identifier | ||
| */ | ||
| public SqlIdentifier parseIdentifier(String identifier) { | ||
| try { | ||
| SqlParser parser = SqlParser.create(identifier, config); | ||
| SqlNode sqlNode = parser.parseExpression(); | ||
| return (SqlIdentifier) sqlNode; | ||
| } catch (Exception e) { | ||
| throw new SqlParserException(String.format( | ||
| "Invalid SQL identifier %s. All SQL keywords must be escaped.", identifier)); | ||
| } | ||
| } | ||
| } |
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71 changes: 71 additions & 0 deletions
71
...table/flink-table-planner/src/main/java/org/apache/flink/table/calcite/CalciteParser.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,71 @@ | ||
| /* | ||
| * 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.flink.table.calcite; | ||
|
|
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| import org.apache.flink.table.api.SqlParserException; | ||
|
|
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| import org.apache.calcite.sql.SqlIdentifier; | ||
| import org.apache.calcite.sql.SqlNode; | ||
| import org.apache.calcite.sql.parser.SqlParseException; | ||
| import org.apache.calcite.sql.parser.SqlParser; | ||
|
|
||
| /** | ||
| * Thin wrapper around {@link SqlParser} that does exception conversion and {@link SqlNode} casting. | ||
| */ | ||
| public class CalciteParser { | ||
| private final SqlParser.Config config; | ||
|
|
||
| public CalciteParser(SqlParser.Config config) { | ||
| this.config = config; | ||
| } | ||
|
|
||
| /** | ||
| * Parses a SQL statement into a {@link SqlNode}. The {@link SqlNode} is not yet validated. | ||
| * | ||
| * @param sql a sql string to parse | ||
| * @return a parsed sql node | ||
| * @throws SqlParserException if an exception is thrown when parsing the statement | ||
| */ | ||
| public SqlNode parse(String sql) { | ||
| try { | ||
| SqlParser parser = SqlParser.create(sql, config); | ||
| return parser.parseStmt(); | ||
| } catch (SqlParseException e) { | ||
| throw new SqlParserException("SQL parse failed. " + e.getMessage()); | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Parses a SQL string as an identifier into a {@link SqlIdentifier}. | ||
| * | ||
| * @param identifier a sql string to parse as an identifier | ||
| * @return a parsed sql node | ||
| * @throws SqlParserException if an exception is thrown when parsing the identifier | ||
| */ | ||
| public SqlIdentifier parseIdentifier(String identifier) { | ||
| try { | ||
| SqlParser parser = SqlParser.create(identifier, config); | ||
| SqlNode sqlNode = parser.parseExpression(); | ||
| return (SqlIdentifier) sqlNode; | ||
| } catch (Exception e) { | ||
| throw new SqlParserException(String.format( | ||
| "Invalid SQL identifier %s. All SQL keywords must be escaped.", identifier)); | ||
| } | ||
| } | ||
| } |
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