import java.text.DecimalFormat;
import java.io.*;
import java.util.*;

public class Key
{

  private int value = 0;

  public static final int size = 8;
  public static final int versize = 2;
  public static final int abbsize = 2;
  public static final int rowsize = 4;
  private final int abbmask = 0x000000FF;
  private final int abbshift = 24;
  private final int vermask = 0x000000FF;
  private final int vershift = 16;
  private final int rowmask = 0x0000FFFF;
  private final int rowshift = 0;
  private Database TheSchema;
  private boolean Constructed;

  public Key(String strval, Database mySchema)
  {
    String buffer;
    int tmpint;

    Constructed = false;

    do {
        setTheSchema(mySchema);

        buffer = strval.substring(0,2);
        if(!setAbb(buffer))
            break;

        buffer = strval.substring(2,4);
        tmpint = Integer.parseInt(buffer);
        if(!setVersion(tmpint))
            break;

        buffer = strval.substring(4,8);
        tmpint = Integer.parseInt(buffer);
        if(!setRow(tmpint))
            break;

        Constructed = true;
    } while(false);
  }

    public boolean Valid()
    {
        return Constructed;
    }

  public int getValue()
  {
    return value;
  }

  public int compare( Key otherkey )
  {
    return ( value - otherkey.getValue() );
  }

  public boolean setVersion(int r)
  {
    value &= ~(vermask << vershift);	// Clear field
    value |= (r & vermask) << vershift;
    return true;
  }

  public int getVersion()
  {
    return (value >> vershift) & vermask;
  }

  public boolean setRow(int r)
  {
    value &= ~(rowmask << rowshift);
    value |= (r & rowmask) << rowshift;
    return true;
  }

  public int getRow()
  {
    return (value >> rowshift) & rowmask;
  }

  public boolean setAbb(String ab)
  {
    int i;
    i = TheSchema.FindTblIdx(ab);

    if( i < 0 )
      return false;

    value &= ~(abbmask << abbshift);
    value |= (i & abbmask) << abbshift;
    return true;
  }

  public String getAbb()
  {
    int i = (value >> abbshift) & abbmask;

    return TheSchema.FindTblAbbr(i);
  }

    public Database getTheSchema()
    {
        return TheSchema;
    }

    public void setTheSchema(Database value)
    {
        TheSchema = value;
    }

  public String toString()
  {
    String retval;
    DecimalFormat twoDigits = new DecimalFormat( "00" );
    DecimalFormat fourDigits = new DecimalFormat( "0000" );

    retval = getAbb();
    retval += twoDigits.format(getVersion());
    retval += fourDigits.format(getRow());
    return retval;
  }

  public static void main(String[] args)
  {
      Database GlobalSchema = new Database();
    Key testkey = new Key( args[0], GlobalSchema );
    if( testkey.Valid() )
        System.out.println("Valid key : " + testkey);
    else
        System.out.println("Invalid test key : " + args[0]);
  }
}