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'databene commons' is an open source Java library by Volker Bergmann.
It provides extensions to the Java core library by utility classes, abstract concepts
and concrete implementations.
/*
* Copyright (C) 2004-2015 Volker Bergmann ([email protected]).
* All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.databene.commons.converter;
import java.sql.Time;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import org.databene.commons.ConversionException;
import org.databene.commons.Patterns;
import org.databene.commons.StringUtil;
/**
* Parses a String as a time value.
* Created: 14.03.2008 22:15:58
* @author Volker Bergmann
*/
public class String2TimeConverter extends ThreadSafeConverter {
private String pattern;
public String2TimeConverter() {
this(null);
}
public String2TimeConverter(String pattern) {
super(String.class, Time.class);
this.pattern = pattern;
}
@Override
public Time convert(String sourceValue) throws ConversionException {
return parse(sourceValue, pattern);
}
public static Time parse(String value) throws ConversionException {
return parse(value, null);
}
public static Time parse(String value, String pattern) throws ConversionException {
if (StringUtil.isEmpty(value))
return null;
pattern = choosePattern(value, pattern);
try {
Date simpleDate = new SimpleDateFormat(pattern).parse(value);
long millis = simpleDate.getTime();
return new Time(millis);
} catch (ParseException e) {
throw new ConversionException(e);
}
}
private static String choosePattern(String sourceValue, String pattern) {
if (pattern == null)
switch (sourceValue.length()) {
case 12 : pattern = Patterns.DEFAULT_TIME_MILLIS_PATTERN; break;
case 8 : pattern = Patterns.DEFAULT_TIME_SECONDS_PATTERN; break;
case 5 : pattern = Patterns.DEFAULT_TIME_MINUTES_PATTERN; break;
default : throw new IllegalArgumentException("Not a supported time format: " + sourceValue);
}
return pattern;
}
}