/**
* 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.apache.aurora.common.args.parsers;
/**
* Parser that handles common functionality for parsing numbers.
*
* @author William Farner
*/
public abstract class NumberParser<T extends Number> extends NonParameterizedTypeParser<T> {
/**
* Performs the actual parsing of the value into the target type.
*
* @param raw Raw value to parse.
* @return The parsed value.
* @throws NumberFormatException If the raw value does not represent a valid number of the target
* type.
*/
abstract T parseNumber(String raw) throws NumberFormatException;
@Override
public T doParse(String raw) throws IllegalArgumentException {
try {
return parseNumber(raw);
} catch (NumberFormatException e) {
throw new IllegalArgumentException(String.format("Invalid value: " + e.getMessage()));
}
}
}