| /* |
| * 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.thrift; |
| |
| import java.io.IOException; |
| import java.util.Set; |
| import java.util.HashSet; |
| |
| import org.apache.avro.Schema; |
| import org.apache.avro.AvroRuntimeException; |
| import org.apache.avro.generic.GenericDatumReader; |
| import org.apache.avro.specific.SpecificData; |
| import org.apache.avro.io.Decoder; |
| import org.apache.avro.util.ClassUtils; |
| |
| /** |
| * {@link org.apache.avro.io.DatumReader DatumReader} for generated Thrift |
| * classes. |
| */ |
| public class ThriftDatumReader<T> extends GenericDatumReader<T> { |
| public ThriftDatumReader() { |
| this(null, null, ThriftData.get()); |
| } |
| |
| public ThriftDatumReader(Class<T> c) { |
| this(ThriftData.get().getSchema(c)); |
| } |
| |
| /** Construct where the writer's and reader's schemas are the same. */ |
| public ThriftDatumReader(Schema schema) { |
| this(schema, schema, ThriftData.get()); |
| } |
| |
| /** Construct given writer's and reader's schema. */ |
| public ThriftDatumReader(Schema writer, Schema reader) { |
| this(writer, reader, ThriftData.get()); |
| } |
| |
| protected ThriftDatumReader(Schema writer, Schema reader, ThriftData data) { |
| super(writer, reader, data); |
| } |
| |
| @Override |
| protected Object createEnum(String symbol, Schema schema) { |
| try { |
| Class c = ClassUtils.forName(SpecificData.getClassName(schema)); |
| if (c == null) |
| return super.createEnum(symbol, schema); // punt to generic |
| return Enum.valueOf(c, symbol); |
| } catch (Exception e) { |
| throw new AvroRuntimeException(e); |
| } |
| } |
| |
| @Override |
| protected Object readInt(Object old, Schema s, Decoder in) throws IOException { |
| String type = s.getProp(ThriftData.THRIFT_PROP); |
| int value = in.readInt(); |
| if (type != null) { |
| if ("byte".equals(type)) |
| return (byte) value; |
| if ("short".equals(type)) |
| return (short) value; |
| } |
| return value; |
| } |
| |
| @Override |
| protected Object newArray(Object old, int size, Schema schema) { |
| if ("set".equals(schema.getProp(ThriftData.THRIFT_PROP))) { |
| if (old instanceof Set) { |
| ((Set) old).clear(); |
| return old; |
| } |
| return new HashSet(); |
| } else { |
| return super.newArray(old, size, schema); |
| } |
| } |
| |
| } |