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.carbondata.core.scan.complextypes;
  
  import java.io.DataOutputStream;
  import java.io.IOException;
  import java.nio.ByteBuffer;
  import java.util.ArrayList;
  import java.util.List;
  import java.util.Map;
  
  import org.apache.carbondata.core.datastore.chunk.DimensionColumnPage;
  import org.apache.carbondata.core.datastore.chunk.impl.DimensionRawColumnChunk;
  import org.apache.carbondata.core.metadata.schema.table.column.CarbonDimension;
  import org.apache.carbondata.core.scan.filter.GenericQueryType;
  import org.apache.carbondata.core.scan.processor.RawBlockletColumnChunks;
  import org.apache.carbondata.core.util.DataTypeUtil;
  
  public class StructQueryType extends ComplexQueryType implements GenericQueryType {
  
    private List<GenericQueryType> children = new ArrayList<GenericQueryType>();
    private String name;
    private String parentName;
  
    public StructQueryType(String name, String parentName, int columnIndex) {
      super(name, parentName, columnIndex);
      this.name = name;
      this.parentName = parentName;
    }
  
    @Override
    public void addChildren(GenericQueryType newChild) {
      if (this.getName().equals(newChild.getParentName())) {
        this.children.add(newChild);
      } else {
        for (GenericQueryType child : this.children) {
          child.addChildren(newChild);
        }
      }
  
    }
  
    @Override
    public String getName() {
      return name;
    }
  
    @Override
    public void setName(String name) {
      this.name = name;
    }
  
    @Override
    public String getParentName() {
      return parentName;
    }
  
    @Override
    public void setParentName(String parentName) {
      this.parentName = parentName;
  
    }
  
    @Override
    public int getColsCount() {
      int colsCount = 1;
      for (int i = 0; i < children.size(); i++) {
        colsCount += children.get(i).getColsCount();
      }
      return colsCount;
    }
  
    @Override
    public void parseBlocksAndReturnComplexColumnByteArray(
        DimensionRawColumnChunk[] dimensionColumnDataChunks,
        DimensionColumnPage[][] dimensionColumnPages, int rowNumber, int pageNumber,
        DataOutputStream dataOutputStream) throws IOException {
      byte[] input =
          copyBlockDataChunk(dimensionColumnDataChunks, dimensionColumnPages, rowNumber, pageNumber);
      ByteBuffer byteArray = ByteBuffer.wrap(input);
      int childElement = byteArray.getShort();
      dataOutputStream.writeShort(childElement);
      if (childElement > 0) {
        for (int i = 0; i < childElement; i++) {
          children.get(i).parseBlocksAndReturnComplexColumnByteArray(dimensionColumnDataChunks,
              dimensionColumnPages, rowNumber, pageNumber, dataOutputStream);
        }
      }
    }
  
    @Override
    public void fillRequiredBlockData(RawBlockletColumnChunks blockChunkHolder)
        throws IOException {
      readBlockDataChunk(blockChunkHolder);
  
      for (int i = 0; i < children.size(); i++) {
        children.get(i).fillRequiredBlockData(blockChunkHolder);
      }
    }
  
    @Override
    public Object getDataBasedOnDataType(ByteBuffer dataBuffer) {
      int childLength = dataBuffer.getShort();
      Object[] fields = new Object[childLength];
      for (int i = 0; i < childLength; i++) {
        fields[i] =  children.get(i).getDataBasedOnDataType(dataBuffer);
      }
      boolean isAllNull = true;
      for (Object field : fields) {
        if (field != null) {
          isAllNull = false;
          break;
        }
      }
      if (isAllNull) {
        return null;
      }
      return DataTypeUtil.getDataTypeConverter().wrapWithGenericRow(fields);
    }
  
    @Override
    public Object[] getObjectArrayDataBasedOnDataType(ByteBuffer dataBuffer) {
      int childLength = dataBuffer.getShort();
      Object[] fields = new Object[childLength];
      for (int i = 0; i < childLength; i++) {
        fields[i] =  children.get(i).getObjectDataBasedOnDataType(dataBuffer);
      }
      return fields;
    }
  
    @Override
    public Object getObjectDataBasedOnDataType(ByteBuffer dataBuffer) {
      return getDataBasedOnDataType(dataBuffer);
    }
  
    @Override
    public Object getDataBasedOnColumn(ByteBuffer dataBuffer, CarbonDimension parent,
        CarbonDimension child) {
      int childLength;
      if (parent.getOrdinal() < child.getOrdinal()) {
        childLength = parent.getNumberOfChild();
        Object[] fields = new Object[childLength];
        for (int i = 0; i < childLength; i++) {
          fields[i] = children.get(i)
              .getDataBasedOnColumn(dataBuffer, parent.getListOfChildDimensions().get(i), child);
        }
        return DataTypeUtil.getDataTypeConverter().wrapWithGenericRow(fields);
      } else if (parent.getOrdinal() > child.getOrdinal()) {
        return null;
      } else {
        //      childLength = dataBuffer.getShort();
        return getDataBasedOnDataType(dataBuffer);
      }
    }
  
    @Override
    public Object getDataBasedOnColumnList(Map<CarbonDimension, ByteBuffer> childBuffer,
        CarbonDimension presentColumn) {
      // Traverse through the Complex Tree and check if the at present column is same as the
      // column present in the child column then fill it up else add null to the column.
      if (childBuffer.get(presentColumn) != null) {
        if (presentColumn.getNumberOfChild() > 0) {
          // This is complex Column. And all its child will be present in the corresponding data
          // buffer.
          return getDataBasedOnDataType(childBuffer.get(presentColumn));
        } else {
          // This is a child column with with primitive data type.
          return children.get(0)
              .getDataBasedOnColumn(childBuffer.get(presentColumn), presentColumn, presentColumn);
        }
      } else {
        int childLength;
        childLength = presentColumn.getNumberOfChild();
        Object[] fields = new Object[childLength];
        for (int i = 0; i < childLength; i++) {
          fields[i] = children.get(i)
              .getDataBasedOnColumnList(childBuffer, presentColumn.getListOfChildDimensions().get(i));
        }
        return DataTypeUtil.getDataTypeConverter().wrapWithGenericRow(fields);
      }
    }
  }
  