/**
* Copyright 2014 Sunny Gleason and original author or authors
*
* 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 io.kazuki.v0.internal.v2schema.types;
import io.kazuki.v0.store.schema.model.Transform;
import io.kazuki.v0.store.schema.model.TransformException;
/**
* Validates / transforms Boolean values.
*/
public class CharOneTransform implements Transform<Object, String> {
@Override
public String pack(Object instance) throws TransformException {
if (instance == null || instance.toString().length() == 0) {
throw new TransformException("must not be null");
}
return instance.toString().substring(0, 1);
}
@Override
public Object unpack(String instance) throws TransformException {
if (instance == null || instance.length() == 0) {
throw new TransformException("must not be null");
}
return instance.toString().substring(0, 1);
}
}