com.ejlchina.searcher.implement.pagination.MaxOffsetPagination Maven / Gradle / Ivy
package com.ejlchina.searcher.implement.pagination;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.ejlchina.searcher.param.SearchParam;
public class MaxOffsetPagination implements Pagination {
protected Logger log = LoggerFactory.getLogger(MaxOffsetPagination.class);
/**
* 最大条数字段参数名
*/
private String maxParamName = "max";
/**
* 偏移条数字段参数名
*/
private String offsetParamName = "offset";
/**
* 最大允许查询条数
*/
private int maxAllowedSize = 100;
@Override
public boolean paginate(SearchParam searchParam, String paraName, String paraValue) {
try {
if (maxParamName.equals(paraName)) {
Integer max = Integer.valueOf(paraValue);
if (max > maxAllowedSize) {
max = maxAllowedSize;
}
searchParam.setMax(max);
return true;
}
if (offsetParamName.equals(paraName)) {
Long offset = Long.valueOf(paraValue);
if (offset < 0) {
offset = 0L;
}
searchParam.setOffset(offset);
return true;
}
} catch (Exception e) {
log.error("解析分页参数异常：", e);
return false;
}
return false;
}
@Override
public String getMaxParamName() {
return maxParamName;
}
@Override
public int getStartPage() {
return 0;
}
public void setMaxParamName(String maxParamName) {
this.maxParamName = maxParamName;
}
public void setOffsetParamName(String offsetParamName) {
this.offsetParamName = offsetParamName;
}
public void setMaxAllowedSize(int maxAllowedSize) {
this.maxAllowedSize = maxAllowedSize;
}
}