srielau commented on code in PR #52334: URL: https://github.com/apache/spark/pull/52334#discussion_r2426377757
########## sql/api/src/main/scala/org/apache/spark/sql/catalyst/parser/PositionMapper.scala: ########## @@ -0,0 +1,180 @@ +/* + * 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.spark.sql.catalyst.parser + +/** + * Case class representing a text substitution. + */ +case class Substitution(start: Int, end: Int, replacement: String) + +/** + * Represents a range mapping from substituted positions to original positions. This is used for + * efficient O(k) position mapping where k = number of substitutions. + * + * @param substitutedStart + * Start position in substituted text (inclusive) + * @param substitutedEnd + * End position in substituted text (exclusive) + * @param originalStart + * Start position in original text + * @param offsetDelta + * Offset difference between original and substituted positions + */ +case class PositionRange( + substitutedStart: Int, + substitutedEnd: Int, + originalStart: Int, + offsetDelta: Int) + +/** + * Maps positions between original SQL text and substituted SQL text using sparse ranges. + * + * This implementation uses O(k) space and O(log k) lookup time where k = number of substitutions, + * instead of the previous O(n) space where n = SQL text length. Review Comment: Fixed -- 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: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
