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Provides common utility functions
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/*
* Copyright (c) CQSE GmbH
*
* 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.conqat.lib.commons.function;
/**
* Implementation class for {@link SupplierWithException#memoize(SupplierWithException)}
*/
/* package */ final class MemoizingSupplierWithException
implements SupplierWithException {
private SupplierWithException supplier;
private T value;
public MemoizingSupplierWithException(SupplierWithException supplier) {
this.supplier = supplier;
}
@Override
public synchronized T get() throws E {
if (supplier != null) {
value = supplier.get();
supplier = null;
}
return value;
}
}