com.wavemaker.runtime.data.dao.util.PageUtils Maven / Gradle / Ivy
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* Copyright (C) 2022-2023 WaveMaker, Inc.
*
* 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
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******************************************************************************/
package com.wavemaker.runtime.data.dao.util;
import org.springframework.data.domain.PageRequest;
import org.springframework.data.domain.Pageable;
import org.springframework.data.domain.Sort;
/**
* @author Dilip Kumar
* @since 11/4/18
*/
public interface PageUtils {
int DEFAULT_PAGE_NUMBER = 0;
int DEFAULT_PAGE_SIZE = 20;
static Pageable defaultIfNull(Pageable pageable) {
if (pageable == null) {
return PageRequest.of(DEFAULT_PAGE_NUMBER, DEFAULT_PAGE_SIZE);
} else if (pageable.getSort() == null) {
return PageRequest.of(pageable.getPageNumber(), pageable.getPageSize(), Sort.unsorted());
} else {
return pageable;
}
}
static Pageable overrideExportSize(final Pageable pageable, final Integer exportSize) {
final Pageable validPageable;
if (exportSize == null || exportSize <= 0) {
if (pageable == null) {
validPageable = new SortedUnPagedRequest(0, -1);
} else {
validPageable = new SortedUnPagedRequest(0, -1, pageable.getSort());
}
} else {
if (pageable == null) {
validPageable = PageRequest.of(0, exportSize);
} else {
validPageable = PageRequest.of(pageable.getPageNumber(), exportSize, pageable.getSort());
}
}
return validPageable;
}
}