/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 2008 jOpenDocument, by ILM Informatique. All rights reserved.
*
* The contents of this file are subject to the terms of the GNU
* General Public License Version 3 only ("GPL").
* You may not use this file except in compliance with the License.
* You can obtain a copy of the License at http://www.gnu.org/licenses/gpl-3.0.html
* See the License for the specific language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each file.
*
*/
package org.jopendocument.dom;
import java.math.BigDecimal;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Arrays;
import java.util.Calendar;
import java.util.Date;
import java.util.List;
/**
* A type of value, as per 16.1 "Data Types" and 6.7.1 "Variable Value Types and Values"
*/
public enum ODValueType {
/**
* Parses to {@link BigDecimal} to return the exact number.
*/
FLOAT("value", Number.class) {
@Override
public String format(Object o) {
// avoid 1.23E+3
if (o instanceof BigDecimal)
return ((BigDecimal) o).toPlainString();
else
return ((Number) o).toString();
}
@Override
public BigDecimal parse(String s) {
return new BigDecimal(s);
}
},
PERCENTAGE("value", Number.class) {
@Override
public String format(Object o) {
return FLOAT.format(o);
}
@Override
public Object parse(String s) {
return FLOAT.parse(s);
}
},
CURRENCY("value", Number.class) {
@Override
public String format(Object o) {
return FLOAT.format(o);
}
@Override
public Object parse(String s) {
return FLOAT.parse(s);
}
},
DATE("date-value", Date.class, Calendar.class) {
@Override
public String format(Object o) {
final Date d = o instanceof Calendar ? ((Calendar) o).getTime() : (Date) o;
return OOUtils.DATE_FORMAT.format(d);
}
@Override
public Date parse(String date) {
if (date.length() == 0)
return null;
else {
try {
return (Date) OOUtils.DATE_FORMAT.parseObject(date);
} catch (ParseException e) {
throw new IllegalStateException("wrong date: " + date, e);
}
}
}
},
TIME("time-value", Calendar.class) {
// FIXME
@Override
public String format(Object o) {
final Calendar cal = (Calendar) o;
// adjust the format TZ to the calendar's
// that way even you pass a non default Calendar, if you did
// myCal.set(HOUR_OF_DAY, 22), the string will have "22H"
final SimpleDateFormat fmt = (SimpleDateFormat) OOUtils.TIME_FORMAT.clone();
fmt.setTimeZone(cal.getTimeZone());
return fmt.format(cal.getTime());
}
@Override
public Calendar parse(String date) {
if (date.length() == 0)
return null;
else {
// take the calendar from the format, that way if date contains "22H"
// returnedCal.get(HOUR_OF_DAY) will return 22 (even if TIME_FORMAT wasn't set to
// the default TZ)
final Calendar cal = (Calendar) OOUtils.TIME_FORMAT.getCalendar().clone();
try {
cal.setTime((Date) OOUtils.TIME_FORMAT.parseObject(date));
} catch (ParseException e) {
throw new IllegalStateException("wrong date: " + date, e);
}
return cal;
}
}
},
BOOLEAN("boolean-value", Boolean.class) {
@Override
public String format(Object o) {
return ((Boolean) o).toString().toLowerCase();
}
@Override
public Boolean parse(String s) {
return Boolean.valueOf(s);
}
},
STRING("string-value", String.class) {
@Override
public String format(Object o) {
return o.toString();
}
@Override
public String parse(String s) {
return s;
}
};
private final String attr;
private final List<Class<?>> acceptedClasses;
private ODValueType(String attr, Class<?>... classes) {
this.attr = attr;
this.acceptedClasses = Arrays.asList(classes);
}
/**
* The name of the value attribute for this value type.
*
* @return the value attribute, eg "boolean-value".
*/
public final String getValueAttribute() {
return this.attr;
}
public boolean canFormat(Class<?> toFormat) {
for (final Class<?> c : this.acceptedClasses)
if (c.isAssignableFrom(toFormat))
return true;
return false;
}
public abstract String format(Object o);
public abstract Object parse(String s);
/**
* The value for the value-type attribute.
*
* @return the value for the value-type attribute, eg "float".
*/
public final String getName() {
return this.name().toLowerCase();
}
/**
* The instance for the passed value type.
*
* @param name the value of the value-type attribute, eg "date".
* @return the corresponding instance, eg {@link #DATE}.
*/
public static ODValueType get(String name) {
return ODValueType.valueOf(name.toUpperCase());
}
/**
* Try to guess the value type for the passed object.
*
* @param o the object.
* @return a value type capable of formatting <code>o</code> or <code>null</code>.
*/
public static ODValueType forObject(Object o) {
if (o instanceof Number)
return FLOAT;
else if (o instanceof Boolean)
return BOOLEAN;
else if (o instanceof String)
return STRING;
else if (o instanceof Calendar && !((Calendar) o).isSet(Calendar.DATE))
return TIME;
else if (DATE.canFormat(o.getClass()))
return DATE;
else
return null;
}
}