/*
* Copyright 2017-2020 the 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
*
* https://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.springframework.data.util;
import lombok.Value;
import java.util.Iterator;
import java.util.function.Supplier;
import java.util.stream.Stream;
Author: Oliver Gierke Since: 2.0
/**
* Lazy implementation of {@link Streamable} obtains a {@link Stream} from a given {@link Supplier}.
*
* @author Oliver Gierke
* @since 2.0
*/
@Value(staticConstructor = "of")
class LazyStreamable<T> implements Streamable<T> {
private final Supplier<? extends Stream<T>> stream;
/*
* (non-Javadoc)
* @see java.lang.Iterable#iterator()
*/
@Override
public Iterator<T> iterator() {
return stream().iterator();
}
/*
* (non-Javadoc)
* @see org.springframework.data.util.Streamable#stream()
*/
@Override
public Stream<T> stream() {
return stream.get();
}
}