
/**
 * Copyright (c) 2011-2019, James Zhan 詹波 (jfinal@126.com).
 *
 * 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.tio.jfinal.plugin.activerecord;

import java.io.Serializable;
import java.util.List;
import java.util.Map;

/**
 * Page is the result of Model.paginate(......) or Db.paginate(......)
 */
public class Page<T> implements Serializable {

	private static final long serialVersionUID = -7102129155309986923L;

	private List<T>				list;		// list result of this page
	private int					pageNumber;	// page number
	private int					pageSize;	// result amount of this page
	private int					totalPage;	// total page
	private int					totalRow;	// total row
	private Map<String, Object>	ext	= null;

	/**
	 * Constructor.
	 * @param list the list of paginate result
	 * @param pageNumber the page number
	 * @param pageSize the page size
	 * @param totalPage the total page of paginate
	 * @param totalRow the total row of paginate
	 */
	public Page(List<T> list, int pageNumber, int pageSize, int totalPage, int totalRow) {
		this.list = list;
		this.pageNumber = pageNumber;
		this.pageSize = pageSize;
		this.totalPage = totalPage;
		this.totalRow = totalRow;
	}

	public Page() {

	}

	/**
	 * Return list of this page.
	 */
	public List<T> getList() {
		return list;
	}

	public void setList(List<T> list) {
		this.list = list;
	}

	/**
	 * Return page number.
	 */
	public int getPageNumber() {
		return pageNumber;
	}

	public void setPageNumber(int pageNumber) {
		this.pageNumber = pageNumber;
	}

	/**
	 * Return page size.
	 */
	public int getPageSize() {
		return pageSize;
	}

	public void setPageSize(int pageSize) {
		this.pageSize = pageSize;
	}

	/**
	 * Return total page.
	 */
	public int getTotalPage() {
		return totalPage;
	}

	public void setTotalPage(int totalPage) {
		this.totalPage = totalPage;
	}

	/**
	 * Return total row.
	 */
	public int getTotalRow() {
		return totalRow;
	}

	public void setTotalRow(int totalRow) {
		this.totalRow = totalRow;
	}

	public boolean isFirstPage() {
		return pageNumber == 1;
	}

	public boolean isLastPage() {
		return pageNumber >= totalPage;
	}

	public String toString() {
		StringBuilder msg = new StringBuilder();
		msg.append("pageNumber : ").append(pageNumber);
		msg.append("\npageSize : ").append(pageSize);
		msg.append("\ntotalPage : ").append(totalPage);
		msg.append("\ntotalRow : ").append(totalRow);
		return msg.toString();
	}

	public Map<String, Object> getExt() {
		return ext;
	}

	public void setExt(Map<String, Object> ext) {
		this.ext = ext;
	}
}
