nandorKollar commented on code in PR #4583: URL: https://github.com/apache/polaris/pull/4583#discussion_r3333248764
########## persistence/relational-jdbc/src/test/java/org/apache/polaris/persistence/relational/jdbc/H2SchemaVersions.java: ########## @@ -0,0 +1,50 @@ +/* + * 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.polaris.persistence.relational.jdbc; + +import java.util.SortedSet; +import java.util.TreeSet; + +/** Discovers H2 schema versions available on the test classpath. */ +final class H2SchemaVersions { + + private H2SchemaVersions() {} + + /** + * Returns sorted schema versions for which {@code h2/schema-vN.sql} exists on the classpath. + * + * <p>schema-v0.sql lives in test resources to cover legacy bootstrap behavior; newer H2 schema + * files live in main resources. Both are merged on the test classpath. + */ + static SortedSet<Integer> discover() { + ClassLoader classLoader = H2SchemaVersions.class.getClassLoader(); + SortedSet<Integer> versions = new TreeSet<>(); + for (int version = 0; ; version++) { + String resource = String.format("h2/schema-v%d.sql", version); + if (classLoader.getResource(resource) == null) { Review Comment: nit: this will skip schema files, when the numbering is not continuous, like for example: schema-0, schema-1, schema-3. Not sure that this we should prepare for this scenario too, or should we? -- 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]
