| /* |
| * 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. |
| */ |
| /** |
| * Defines {@link org.apache.beam.sdk.transforms.PTransform}s for transforming data in a pipeline. |
| * |
| * <p>A {@link org.apache.beam.sdk.transforms.PTransform} is an operation that takes an {@code |
| * InputT} (some subtype of {@link org.apache.beam.sdk.values.PInput}) and produces an {@code |
| * OutputT} (some subtype of {@link org.apache.beam.sdk.values.POutput}). |
| * |
| * <p>Common PTransforms include root PTransforms like {@link org.apache.beam.sdk.io.TextIO.Read} |
| * and {@link org.apache.beam.sdk.transforms.Create}, processing and conversion operations like |
| * {@link org.apache.beam.sdk.transforms.ParDo}, {@link org.apache.beam.sdk.transforms.GroupByKey}, |
| * {@link org.apache.beam.sdk.transforms.join.CoGroupByKey}, {@link |
| * org.apache.beam.sdk.transforms.Combine}, and {@link org.apache.beam.sdk.transforms.Count}, and |
| * outputting PTransforms like {@link org.apache.beam.sdk.io.TextIO.Write}. |
| * |
| * <p>New PTransforms can be created by composing existing PTransforms. Most PTransforms in this |
| * package are composites, and users can also create composite PTransforms for their own |
| * application-specific logic. |
| */ |
| @DefaultAnnotation(NonNull.class) |
| package org.apache.beam.sdk.transforms; |
| |
| import edu.umd.cs.findbugs.annotations.DefaultAnnotation; |
| import edu.umd.cs.findbugs.annotations.NonNull; |
