Application: gvSIG desktop » Library: org.gvsig.tools

package org.gvsig.tools.dataTypes;

import java.math.BigDecimal;

import java.math.MathContext;

import java.math.RoundingMode;

import java.util.Locale;

/**

 *

 * @author jjdelcerro

 */

public class CoercionContextDecimalImpl 

        extends CoercionContextLocaleImpl

        implements CoercionContextDecimal {

  final MathContext mathContext;

  final int scale;

  final int roundMode;

  public CoercionContextDecimalImpl(Locale locale, int precision, int scale, int roundMode) {

    // Precision 0 => MathContext.UNLIMITED

    // scale <0 ==> Sin scale.

    super(locale==null? Locale.ENGLISH:locale);

    if( precision<1 ) {

      this.mathContext = MathContext.UNLIMITED;

    } else {

      this.mathContext = new MathContext(precision, RoundingMode.valueOf(roundMode));

    }

    this.scale = scale;

    this.roundMode = roundMode;

  }

  public CoercionContextDecimalImpl(Locale locale, int precision, int scale) {

    this(locale, precision, scale, BigDecimal.ROUND_HALF_UP);

  }

  public CoercionContextDecimalImpl(int precision, int scale) {

    this(null, precision, scale, BigDecimal.ROUND_HALF_UP);

  }

  public CoercionContextDecimalImpl(Locale locale) {

    this(locale, 0, -1, BigDecimal.ROUND_HALF_UP);

  }

  @Override

  public MathContext getMathContext() {

    return this.mathContext;

  }

  @Override

  public int precision() {

    return this.mathContext.getPrecision();

  }

  @Override

  public int scale() {

    return this.scale;

  }

  @Override

  public boolean hasScale() {

    return this.scale>=0;

  }

  @Override

  public int roundMode() {

    return this.roundMode;

  }

  @Override

  public String toString() {

    return this.locale.toString()+" ("+this.precision()+","+this.scale()+")";

  }

}