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.dataflow.data.nontagged.printers.adm;
  
  import java.io.PrintStream;
  import java.util.List;
  
  import org.apache.asterix.formats.nontagged.ADMPrinterFactoryProvider;
  import org.apache.asterix.om.types.ATypeTag;
  import org.apache.asterix.om.types.AUnionType;
  import org.apache.asterix.om.types.IAType;
  import org.apache.hyracks.algebricks.data.IPrinter;
  import org.apache.hyracks.algebricks.data.IPrinterFactory;
  import org.apache.hyracks.api.context.IEvaluatorContext;
  import org.apache.hyracks.api.exceptions.HyracksDataException;
  
  public class AUnionPrinterFactory implements IPrinterFactory {
  
      private static final long serialVersionUID = 1L;
      private AUnionType unionType;
  
      public AUnionPrinterFactory(AUnionType unionType) {
          this.unionType = unionType;
      }
  
      @Override
      public IPrinter createPrinter(IEvaluatorContext context) {
          return new IPrinter() {
              private IPrinter[] printers;
              private List<IAType> unionList;
  
              @Override
              public void init() throws HyracksDataException {
                  unionList = unionType.getUnionList();
                  printers = new IPrinter[unionType.getUnionList().size()];
                  for (int i = 0; i < printers.length; i++) {
                      printers[i] =
                              (ADMPrinterFactoryProvider.INSTANCE.getPrinterFactory(unionType.getUnionList().get(i)))
                                      .createPrinter(context);
                      printers[i].init();
                  }
              }
  
              @Override
              public void print(byte[] b, int s, int l, PrintStream ps) throws HyracksDataException {
                  ATypeTag tag = unionList.get(b[s + 1]).getTypeTag();
                  if (tag == ATypeTag.UNION) {
                      printers[b[s + 1]].print(b, s + 1, l, ps);
                  } else {
                      if (tag == ATypeTag.ANY) {
                          printers[b[s + 1]].print(b, s + 2, l, ps);
                      } else {
                          printers[b[s + 1]].print(b, s + 1, l, ps);
                      }
                  }
              }
          };
      }
  }
  