sjwiesman commented on a change in pull request #13010: URL: https://github.com/apache/flink/pull/13010#discussion_r485782974
########## File path: flink-table/flink-table-api-java-bridge/src/main/java/org/apache/flink/table/factories/datagen/DataGenTableSource.java ########## @@ -0,0 +1,89 @@ +/* + * 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.factories.datagen; + +import org.apache.flink.annotation.Internal; +import org.apache.flink.annotation.VisibleForTesting; +import org.apache.flink.streaming.api.functions.source.StatefulSequenceSource; +import org.apache.flink.streaming.api.functions.source.datagen.DataGenerator; +import org.apache.flink.streaming.api.functions.source.datagen.DataGeneratorSource; +import org.apache.flink.table.api.TableSchema; +import org.apache.flink.table.connector.ChangelogMode; +import org.apache.flink.table.connector.source.DynamicTableSource; +import org.apache.flink.table.connector.source.ScanTableSource; +import org.apache.flink.table.connector.source.SourceFunctionProvider; +import org.apache.flink.table.data.RowData; +import org.apache.flink.table.factories.datagen.types.RowDataGenerator; +import org.apache.flink.table.sources.StreamTableSource; + +/** + * A {@link StreamTableSource} that emits each number from a given interval exactly once, + * possibly in parallel. See {@link StatefulSequenceSource}. + */ +@Internal +public class DataGenTableSource implements ScanTableSource { + + private final DataGenerator[] fieldGenerators; + private final String tableName; + private final TableSchema schema; + private final long rowsPerSecond; + private final Long numberOfRows; + + public DataGenTableSource( + DataGenerator[] fieldGenerators, + String tableName, + TableSchema schema, + long rowsPerSecond, + Long numberOfRows) { + this.fieldGenerators = fieldGenerators; + this.tableName = tableName; + this.schema = schema; + this.rowsPerSecond = rowsPerSecond; + this.numberOfRows = numberOfRows; + } + + @Override + public ScanRuntimeProvider getScanRuntimeProvider(ScanContext context) { + boolean isBounded = numberOfRows == null; Review comment: nice catch ---------------------------------------------------------------- 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. For queries about this service, please contact Infrastructure at: [email protected]
