| /* |
| * 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.beam.sdk.extensions.sql.meta.provider.seqgen; |
| |
| import com.google.auto.service.AutoService; |
| import org.apache.beam.sdk.extensions.sql.meta.BeamSqlTable; |
| import org.apache.beam.sdk.extensions.sql.meta.Table; |
| import org.apache.beam.sdk.extensions.sql.meta.provider.InMemoryMetaTableProvider; |
| import org.apache.beam.sdk.extensions.sql.meta.provider.TableProvider; |
| |
| /** |
| * Sequence generator table provider. |
| * |
| * <p>A sample of text table is: |
| * |
| * <pre>{@code |
| * CREATE EXTERNAL TABLE MY_SEQUENCE( |
| * sequence BIGINT COMMENT 'this is the primary key', |
| * event_time TIMESTAMP COMMENT 'this is the element timestamp' |
| * ) |
| * TYPE 'sequence'; |
| * }</pre> |
| */ |
| @AutoService(TableProvider.class) |
| public class GenerateSequenceTableProvider extends InMemoryMetaTableProvider { |
| |
| @Override |
| public String getTableType() { |
| return "sequence"; |
| } |
| |
| @Override |
| public BeamSqlTable buildBeamSqlTable(Table table) { |
| return new GenerateSequenceTable(table); |
| } |
| } |