Source for gnu.CORBA.typecodes.FixedTypeCode

   1: /* FixedTypeCode.java --
   2:    Copyright (C) 2005 Free Software Foundation, Inc.
   3: 
   4: This file is part of GNU Classpath.
   5: 
   6: GNU Classpath is free software; you can redistribute it and/or modify
   7: it under the terms of the GNU General Public License as published by
   8: the Free Software Foundation; either version 2, or (at your option)
   9: any later version.
  10: 
  11: GNU Classpath is distributed in the hope that it will be useful, but
  12: WITHOUT ANY WARRANTY; without even the implied warranty of
  13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14: General Public License for more details.
  15: 
  16: You should have received a copy of the GNU General Public License
  17: along with GNU Classpath; see the file COPYING.  If not, write to the
  18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19: 02110-1301 USA.
  20: 
  21: Linking this library statically or dynamically with other modules is
  22: making a combined work based on this library.  Thus, the terms and
  23: conditions of the GNU General Public License cover the whole
  24: combination.
  25: 
  26: As a special exception, the copyright holders of this library give you
  27: permission to link this library with independent modules to produce an
  28: executable, regardless of the license terms of these independent
  29: modules, and to copy and distribute the resulting executable under
  30: terms of your choice, provided that you also meet, for each linked
  31: independent module, the terms and conditions of the license of that
  32: module.  An independent module is a module which is not derived from
  33: or based on this library.  If you modify this library, you may extend
  34: this exception to your version of the library, but you are not
  35: obligated to do so.  If you do not wish to do so, delete this
  36: exception statement from your version. */
  37: 
  38: 
  39: package gnu.CORBA.typecodes;
  40: 
  41: 
  42: import java.math.BigDecimal;
  43: 
  44: import org.omg.CORBA.TCKind;
  45: import org.omg.CORBA.TypeCode;
  46: import org.omg.CORBA.TypeCodePackage.BadKind;
  47: 
  48: /**
  49:  * A typecode for CORBA <code>fixed</code>
  50:  * @author Audrius Meskauskas (AudriusA@Bioinformatics.org)
  51:  */
  52: public class FixedTypeCode
  53:   extends PrimitiveTypeCode
  54: {
  55:   /**
  56:    * Use serialVersionUID for interoperability.
  57:    */
  58:   private static final long serialVersionUID = 1;
  59: 
  60: 
  61:   /**
  62:    * The number of the used digits.
  63:    */
  64:   private short digits;
  65: 
  66:   /**
  67:    * The number of the digits after the decimal point.
  68:    */
  69:   private short scale;
  70: 
  71:   /**
  72:    * Creates the instance of the fixed type code.
  73:    */
  74:   public FixedTypeCode()
  75:   {
  76:     super(TCKind.tk_fixed);
  77:   }
  78: 
  79:   /**
  80:    * Creates the instance of the fixed type code,
  81:    * setting the digits and scale by example.
  82:    */
  83:   public FixedTypeCode(BigDecimal example)
  84:   {
  85:     super(TCKind.tk_fixed);
  86:     if (example != null)
  87:       {
  88:         setScale(example.scale());
  89:         setDigits(countDigits(example));
  90:       }
  91:   }
  92: 
  93:   /**
  94:    * Set the number of digits.
  95:    */
  96:   public void setDigits(int a_digits)
  97:   {
  98:     this.digits = (short) a_digits;
  99:   }
 100: 
 101:   /**
 102:    * Set the number of digits after the decimal point.
 103:    */
 104:   public void setScale(int a_scale)
 105:   {
 106:     this.scale = (short) a_scale;
 107:   }
 108: 
 109:   /**
 110:    * Get the number of digits in thid BigDecimal
 111:    *
 112:    * @param number a BigDecimal to check.
 113:    */
 114:   public static int countDigits(BigDecimal number)
 115:   {
 116:     return number.unscaledValue().abs().toString().length();
 117:   }
 118: 
 119:   /**
 120:    * Compare with other type code for equality.
 121:    */
 122:   public boolean equal(TypeCode other)
 123:   {
 124:     if (other == this) return true;
 125:     try
 126:       {
 127:         TypeCode that = (TypeCode) other;
 128:         return kind() == that.kind() && digits == that.fixed_digits() &&
 129:                scale == that.fixed_scale();
 130:       }
 131:     catch (BadKind ex)
 132:       {
 133:         return false;
 134:       }
 135:   }
 136: 
 137:   /**
 138:    * Get the number of digits.
 139:    */
 140:   public short fixed_digits()
 141:   {
 142:     return digits;
 143:   }
 144: 
 145:   /**
 146:    * Get the number of digits after the decimal point.
 147:    */
 148:   public short fixed_scale()
 149:   {
 150:     return scale;
 151:   }
 152: }