/*
* 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.jdbi.v3.core.collector;
import java.util.Optional;
class OptionalBuilder<T> {
private Optional<T> optional = Optional.empty();
public void set(T value) {
if (optional.isPresent()) {
throw new IllegalStateException(
String.format("Multiple values for Optional type: ['%s','%s',...]",
optional.get(),
value));
}
optional = Optional.ofNullable(value);
}
public Optional<T> build() {
return optional;
}
}