| /* |
| * 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 |
| * |
| * https://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.avro.io; |
| |
| import java.io.IOException; |
| |
| import org.apache.avro.Schema; |
| |
| /** |
| * Read data of a schema. |
| * <p> |
| * Determines the in-memory data representation. |
| */ |
| public interface DatumReader<D> { |
| |
| /** Set the writer's schema. */ |
| void setSchema(Schema schema); |
| |
| /** |
| * Read a datum. Traverse the schema, depth-first, reading all leaf values in |
| * the schema into a datum that is returned. If the provided datum is non-null |
| * it may be reused and returned. |
| */ |
| D read(D reuse, Decoder in) throws IOException; |
| |
| } |