/*
* RHQ Management Platform
* Copyright (C) 2005-2008 Red Hat, Inc.
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, version 2, as
* published by the Free Software Foundation, and/or the GNU Lesser
* General Public License, version 2.1, also as published by the Free
* Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License and the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License
* and the GNU Lesser General Public License along with this program;
* if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package org.rhq.core.clientapi.util.units;
import java.math.BigDecimal;
import java.text.NumberFormat;
import java.text.ParseException;
import java.util.Locale;
public abstract class SimpleFormatter implements Formatter {
protected abstract UnitsConstants getUnitType();
protected abstract ScaleConstants getUnitScale();
public FormattedNumber format(UnitNumber val, Locale locale, FormatSpecifics specifics) {
NumberFormat fmt;
fmt = this.getNumberFormat(locale);
return this.formatNumber(val.getValue(), fmt);
}
public FormattedNumber[] formatSame(double[] vals, UnitsConstants unitType, ScaleConstants scale, Locale locale,
FormatSpecifics specifics) {
FormattedNumber[] res;
NumberFormat fmt;
if (unitType != this.getUnitType()) {
throw new IllegalArgumentException("Invalid unit specified");
}
if (scale != this.getUnitScale()) {
throw new IllegalArgumentException("Invalid scale specified");
}
fmt = UnitsUtil.getNumberFormat(vals, locale);
res = new FormattedNumber[vals.length];
for (int i = 0; i < vals.length; i++) {
res[i] = this.formatNumber(vals[i], fmt);
}
return res;
}
protected abstract FormattedNumber formatNumber(double rawValue, NumberFormat fmt);
protected NumberFormat getNumberFormat(Locale locale) {
NumberFormat res = NumberFormat.getInstance(locale);
res.setMinimumFractionDigits(1);
res.setMaximumFractionDigits(1);
return res;
}
public BigDecimal getBaseValue(double value, ScaleConstants scale) {
if (scale != this.getUnitScale()) {
throw new IllegalArgumentException("Invalid scale specified");
}
return new BigDecimal(value);
}
public BigDecimal getScaledValue(BigDecimal value, ScaleConstants targScale) {
if (targScale != this.getUnitScale()) {
throw new IllegalArgumentException("Invalid scale specified");
}
return value;
}
public UnitNumber parse(String val, Locale locale, ParseSpecifics specifics) throws ParseException {
NumberFormat fmt;
fmt = NumberFormat.getInstance(locale);
return new UnitNumber(fmt.parse(val).doubleValue(), this.getUnitType(), this.getUnitScale());
}
}