win.doyto.query.core.PageQuery Maven / Gradle / Ivy

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// Generated by delombok at Sat Aug 10 11:56:00 CST 2019
package win.doyto.query.core;

import io.swagger.annotations.ApiModelProperty;
import win.doyto.query.validation.PageGroup;
import java.io.Serializable;
import javax.validation.constraints.Pattern;
import static java.lang.Math.max;

/**
 * PageQuery
 *
 * @author f0rb
 */
public class PageQuery implements Serializable {
    static final String RX_SORT = "(\\w+,(asc|desc);|field\\(\\w+(,[\\w\']+)+\\);)*\\w+,(asc|desc)";
    private Integer pageNumber;
    private Integer pageSize;
    @ApiModelProperty("Sorting field, format: field1,desc;field2,asc")
    @Pattern(regexp = RX_SORT, message = "Sorting field format error", groups = PageGroup.class)
    private String sort;

    public Integer getPageNumber() {
        return getDefault(pageNumber, 0, pageSize == null);
    }

    public Integer getPageSize() {
        return getDefault(pageSize, 10, pageNumber == null);
    }

    private Integer getDefault(Integer number, int defaultValue, boolean canBeNull) {
        if (number == null) {
            if (canBeNull) {
                return null;
            } else {
                number = defaultValue;
            }
        }
        return max(0, number);
    }

    public int getOffset() {
        return needPaging() ? getPageSize() * getPageNumber() : 0;
    }

    public boolean needPaging() {
        return getPageNumber() != null;
    }

    @java.lang.SuppressWarnings("all")
    @lombok.Generated
    public PageQuery setPageNumber(final Integer pageNumber) {
        this.pageNumber = pageNumber;
        return this;
    }

    @java.lang.SuppressWarnings("all")
    @lombok.Generated
    public PageQuery setPageSize(final Integer pageSize) {
        this.pageSize = pageSize;
        return this;
    }

    @java.lang.SuppressWarnings("all")
    @lombok.Generated
    public String getSort() {
        return this.sort;
    }

    @java.lang.SuppressWarnings("all")
    @lombok.Generated
    public PageQuery setSort(final String sort) {
        this.sort = sort;
        return this;
    }
}