import java.util.*;
import java.io.*;

public class IndexData
{
  private char id;
  private long volume = 0;
  
  private Vector child;
  private Vector address;
  public  long position;
  
  
  
  public IndexData( char name)
    {
      child    = new Vector();
      address  = new Vector();
      id = name;
    }
  
  public int ChildSize()
    {
      return child.size();
    }
  
  public String getName()
    {
      return (new Character(id)).toString();
    }
  
  
  public char getID()
    {
      return id;
    }
    
  public void setID(char id)
    {
      this.id = id;
    }
  
  public void addChild(IndexData id)
    {
      child.addElement(id);
    }

  public IndexData getChild(int i)
    {
      if( i < child.size() )
        {
          return (IndexData)child.get(i);
        }
      return null;
    }
  
  public IndexData getChild()
    {
      if(child.size() != 0)
        {
          return (IndexData)child.get(0);
        }
      return null;
    }
  
  public void addAddress(Address str)
    {
      address.addElement(str);
    }

  public Address getAddress()
    {
      return (Address)address.get(0);
    }
  
  public long VolumePlus(long plus)
    {
      volume +=plus;
      return volume;
    }
  
  public long  getVolumu()
    {
      return volume;
    }
  
  public IndexData search(char c)
    {
      for(int i=0; i < child.size();i++)
        {
         
          if( ((IndexData)child.get(i)).getID() == c)
            {
              return (IndexData)child.get(i);
            }
            
        }
         
      return null;
    }
  
  public int getHeadSize()
    {
      
      return 2+8+8+ ChildSize()*(2+8);
    }
  
  public long getSaveSize()
    {
      long sum = 0;
      sum += getHeadSize();
      
      for(int i= 0;i <ChildSize();i++)
        {
         sum += getChild(i).getSaveSize();
        }
      return sum;
    }
  
  public void saveFile(DataOutputStream str)
    {
      try
        {
          long sum=0;
          str.writeChar(getID());
          str.writeLong(ChildSize());
          str.writeLong(volume);
          
          for(int i = 0;i<ChildSize();i++)
            {
              sum += getChild(i).getSaveSize();
              str.writeChar(getChild(i).getID());
              str.writeLong(sum);
            }
        }catch(Exception e)
          {
            System.out.println("Error: saveFile() in IndexData");
          }
      for(int i=0;i<ChildSize();i++)
        {
          getChild(i).saveFile(str);
        }
    }
  
  public void readFileHeader(RandomAccessFile str)
    {
      char name=' ';
      long head_size = 0;
      try
        {
          name= str.readChar();
          head_size = str.readLong();
          this.volume = str.readLong();
          System.out.println("name:"+name);
          
          for(int i=0;i<head_size;i++)
            {
              IndexData dat = new IndexData(str.readChar());
             // dat.setVolumePlus(volume);
              addChild(dat);
              dat.position = str.readLong();
            }
        }catch(Exception e)
          {
            ;
          }
    }
  public void  loadFile(DataInputStream str)
    {
      char name=' ';
      long head_size = 0;
      
      try
        {
          name= str.readChar();
          head_size = str.readLong();
          this.volume = str.readLong();
       //     System.out.println("name:"+name);
          for(int i=0;i<head_size;i++)
            {
              IndexData dat = new IndexData(name);
              addChild(dat);
              str.readChar();
              str.readLong();
            }
          for(int i = 0;i < ChildSize();i++)
            {
              getChild(i).loadFile(str);
            }
        }catch(Exception e)
          {
            System.out.println("Error :readFile in IndedData");
          }
    }
  
  
 
  public static void main(String args[])
    {
      IndexData dat0 = new IndexData('‚ ');
      IndexData dat1 = new IndexData('�h');
      dat0.addChild(dat1);
      System.out.println(dat0.getChild().getID());
    }
  public void Test_viewChild()
    {
      System.out.println("START SCACAN TESTVIEWCHILD ");
      for(int i=0;i<ChildSize();i++)
        {
          System.out.println(getChild(i).getName());
        }
    }
}