content: /*
   * 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.asterix.external.library.adapter;
  
  import java.io.IOException;
  import java.io.InputStream;
  import java.util.Map;
  
  import org.apache.asterix.common.api.IApplicationContext;
  import org.apache.asterix.common.cluster.ClusterPartition;
  import org.apache.asterix.common.external.IDataSourceAdapter;
  import org.apache.asterix.common.external.IExternalFilterEvaluatorFactory;
  import org.apache.asterix.external.api.ITypedAdapterFactory;
  import org.apache.asterix.external.dataflow.TupleForwarder;
  import org.apache.asterix.external.parser.ADMDataParser;
  import org.apache.asterix.om.types.ARecordType;
  import org.apache.hyracks.algebricks.common.constraints.AlgebricksAbsolutePartitionConstraint;
  import org.apache.hyracks.api.application.ICCServiceContext;
  import org.apache.hyracks.api.comm.IFrameWriter;
  import org.apache.hyracks.api.context.IHyracksTaskContext;
  import org.apache.hyracks.api.exceptions.HyracksDataException;
  import org.apache.hyracks.api.exceptions.IWarningCollector;
  import org.apache.hyracks.dataflow.common.comm.io.ArrayTupleBuilder;
  import org.apache.hyracks.dataflow.std.file.ITupleParser;
  import org.apache.hyracks.dataflow.std.file.ITupleParserFactory;
  
  public class TestTypedAdapterFactory implements ITypedAdapterFactory {
  
      private static final long serialVersionUID = 1L;
  
      private ARecordType outputType;
  
      public static final String KEY_NUM_OUTPUT_RECORDS = "num_output_records";
  
      private Map<String, String> configuration;
  
      @Override
      public String getAlias() {
          return "test_typed";
      }
  
      @Override
      public AlgebricksAbsolutePartitionConstraint getPartitionConstraint() {
          throw new IllegalStateException(); // shouldn't be called for external adapters
      }
  
      @Override
      public IDataSourceAdapter createAdapter(IHyracksTaskContext ctx, int partition) throws HyracksDataException {
          final String nodeId = ctx.getJobletContext().getServiceContext().getNodeId();
          final ITupleParserFactory tupleParserFactory = new ITupleParserFactory() {
              private static final long serialVersionUID = 1L;
  
              @Override
              public ITupleParser createTupleParser(IHyracksTaskContext ctx) throws HyracksDataException {
                  ADMDataParser parser;
  
                  ArrayTupleBuilder tb;
                  IApplicationContext appCtx =
                          (IApplicationContext) ctx.getJobletContext().getServiceContext().getApplicationContext();
                  ClusterPartition nodePartition = appCtx.getMetadataProperties().getNodePartitions().get(nodeId)[0];
                  parser = new ADMDataParser(outputType, true);
                  tb = new ArrayTupleBuilder(1);
                  return new ITupleParser() {
                      @Override
                      public void parse(InputStream in, IFrameWriter writer) throws HyracksDataException {
                          try {
                              parser.setInputStream(in);
                              TupleForwarder forwarder = new TupleForwarder(ctx, writer);
                              while (true) {
                                  tb.reset();
                                  if (!parser.parse(tb.getDataOutput())) {
                                      break;
                                  }
                                  tb.addFieldEndOffset();
                                  forwarder.addTuple(tb);
                              }
                              forwarder.complete();
                          } catch (Exception e) {
                              throw HyracksDataException.create(e);
                          }
                      }
                  };
              }
          };
          try {
              return new TestTypedAdapter(tupleParserFactory, outputType, ctx, configuration, partition);
          } catch (IOException e) {
              throw HyracksDataException.create(e);
          }
      }
  
      @Override
      public void configure(ICCServiceContext serviceContext, Map<String, String> configuration,
              IWarningCollector warningCollector, IExternalFilterEvaluatorFactory filterEvaluatorFactory) {
          this.configuration = configuration;
      }
  
      @Override
      public void setOutputType(ARecordType outputType) {
          this.outputType = outputType;
      }
  
      @Override
      public void setMetaType(ARecordType metaType) {
      }
  
      @Override
      public ARecordType getOutputType() {
          return outputType;
      }
  
      @Override
      public ARecordType getMetaType() {
          return null;
      }
  }
  