/*
* Copyright 2016 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
*
* 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.springframework.data.gemfire.domain;
import java.util.function.Function;
import org.springframework.data.domain.Page;
/**
* The {@link EmptyPage} class is an implementation of an empty Spring Data {@link Page}.
*
* @author John Blum
* @param <T> {@link Class} type of the elements in this {@link Page}.
* @see org.springframework.core.convert.converter.Converter
* @see org.springframework.data.domain.Page
* @since 1.1.0
*/
@SuppressWarnings("unused")
public final class EmptyPage<T> extends EmptySlice<T> implements Page<T> {
@SuppressWarnings("all")
public static final EmptyPage<?> EMPTY_PAGE = new EmptyPage<>();
/**
* @inheritDoc
*/
@Override
public int getTotalPages() {
return 1;
}
/**
* @inheritDoc
*/
@Override
public long getTotalElements() {
return 0;
}
/**
* @inheritDoc
*/
@Override
@SuppressWarnings("unchecked")
public <S> Page<S> map(Function<? super T, ? extends S> converter) {
return (Page<S>) EMPTY_PAGE;
}
}