Github user paul-rogers commented on a diff in the pull request: https://github.com/apache/drill/pull/1032#discussion_r150682787 --- Diff: exec/java-exec/src/main/java/org/apache/drill/exec/planner/sql/DynamicSchema.java --- @@ -0,0 +1,65 @@ +/* + * 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.drill.exec.planner.sql; + +import org.apache.calcite.jdbc.CalciteSchema; +import org.apache.calcite.jdbc.SimpleCalciteSchema; +import org.apache.calcite.schema.Schema; +import org.apache.calcite.schema.SchemaPlus; +import org.apache.drill.exec.store.SchemaConfig; +import org.apache.drill.exec.store.StoragePluginRegistry; + + +/** + * Unlike SimpleCalciteSchema, DynamicSchema could have an empty or partial schemaMap, but it could maintain a map of + * name->SchemaFactory, and only register schema when the corresponsdent name is requested. + */ +public class DynamicSchema extends SimpleCalciteSchema { + + protected SchemaConfig schemaConfig; --- End diff -- Seems the schemaConfig is never set or used.
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