parquet.thrift.TBaseRecordConverter Maven / Gradle / Ivy

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/* 
 * 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 parquet.thrift;

import org.apache.thrift.TBase;
import org.apache.thrift.TException;
import org.apache.thrift.protocol.TProtocol;

import parquet.io.ParquetDecodingException;
import parquet.schema.MessageType;
import parquet.thrift.struct.ThriftType.StructType;

public class TBaseRecordConverter> extends ThriftRecordConverter {

  public TBaseRecordConverter(final Class thriftClass, MessageType requestedParquetSchema, StructType thriftType) {
    super(new ThriftReader() {
      @Override
      public T readOneRecord(TProtocol protocol) throws TException {
          try {
            T thriftObject = thriftClass.newInstance();
            thriftObject.read(protocol);
            return thriftObject;
          } catch (InstantiationException e) {
            throw new ParquetDecodingException("Could not instantiate Thrift " + thriftClass, e);
          } catch (IllegalAccessException e) {
            throw new ParquetDecodingException("Thrift class or constructor not public " + thriftClass, e);
          }
      }
    }, thriftClass.getSimpleName(), requestedParquetSchema, thriftType);
  }

}