zstan commented on code in PR #4697: URL: https://github.com/apache/ignite-3/pull/4697#discussion_r1838094639
########## modules/sql-engine/src/main/java/org/apache/ignite/internal/sql/engine/exec/fsm/QueryExecutionProgram.java: ########## @@ -0,0 +1,102 @@ +/* + * 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.ignite.internal.sql.engine.exec.fsm; + +import java.util.List; +import org.apache.ignite.internal.sql.engine.AsyncSqlCursor; +import org.apache.ignite.internal.sql.engine.InternalSqlRow; +import org.apache.ignite.internal.sql.engine.SqlOperationContext; +import org.apache.ignite.internal.sql.engine.message.UnknownNodeException; + +/** + * Generic execution program, which accepts query string and initialization parameters as input, and returns cursor as result. + */ +class QueryExecutionProgram extends Program<AsyncSqlCursor<InternalSqlRow>> { + private static final String PROGRAM_NAME = "QUERY_EXECUTION"; + private static final List<Transition> TRANSITIONS = List.of( + new Transition( + ExecutionPhase.REGISTERED, + query -> ExecutionPhase.PARSING + ), + new Transition( + ExecutionPhase.PARSING, + query -> query.parsedResult != null + ? ExecutionPhase.OPTIMIZING + : ExecutionPhase.SCRIPT_INITIALIZATION), + new Transition( + ExecutionPhase.OPTIMIZING, + query -> ExecutionPhase.CURSOR_INITIALIZATION + ), + new Transition( + ExecutionPhase.CURSOR_INITIALIZATION, + query -> ExecutionPhase.EXECUTING + ), + new Transition( + ExecutionPhase.SCRIPT_INITIALIZATION, + query -> ExecutionPhase.EXECUTING + ) + ); + + static final Program<AsyncSqlCursor<InternalSqlRow>> INSTANCE = new QueryExecutionProgram(); + + private QueryExecutionProgram() { + super( + PROGRAM_NAME, + TRANSITIONS, + phase -> phase == ExecutionPhase.EXECUTING, + query -> query.cursor, + QueryExecutionProgram::errorHandler + ); + } + + static boolean errorHandler(Query query, Throwable th) { Review Comment: i think it become more clear if "errorHandler" and "canRecover" will be moved into Program ? -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: notifications-unsubscr...@ignite.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
