/*
* Copyright 2004-2010 the Seasar Foundation and the Others.
*
* 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.slim3.util;
/**
* A utility class for {@link Long}.
*
* @author higa
* @version 3.0
*/
public final class LongUtil {
private LongUtil() {
}
/**
* Converts the object to {@link Long}.
*
* @param o
* the object
* @return the converted value
*/
public static Long toLong(Object o) {
if (o == null) {
return null;
} else if (o.getClass() == Long.class) {
return (Long) o;
} else if (o instanceof Number) {
return Long.valueOf(((Number) o).longValue());
} else if (o.getClass() == String.class) {
String s = (String) o;
if (StringUtil.isEmpty(s)) {
return null;
}
return Long.valueOf(s);
} else if (o.getClass() == Boolean.class) {
return ((Boolean) o).booleanValue() ? Long.valueOf(1) : Long
.valueOf(0);
} else {
return Long.valueOf(o.toString());
}
}
/**
* Converts the object to primitive long.
*
* @param o
* the object
* @return the converted value
*/
public static long toPrimitiveLong(Object o) {
Long l = toLong(o);
if (l == null) {
return 0;
}
return l.longValue();
}
}