package com.taobao.top.analysis.statistics.map;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import com.taobao.top.analysis.node.job.JobTask;
import com.taobao.top.analysis.statistics.StatisticsEngine;
import com.taobao.top.analysis.statistics.data.ReportEntry;
import com.taobao.top.analysis.util.Threshold;
/**
* 通过final限制mapper的流程
* @author zhudi
*
*/
public abstract class AbstractMapper implements IMapper {
protected static final Log logger = LogFactory.getLog(StatisticsEngine.class);
/**
*
*/
private static final long serialVersionUID = 7568020685361775161L;
protected Threshold threshold;
public AbstractMapper() {
threshold = new Threshold(300);
}
/**
* 通过entry的Condition对象过滤，实现generatekey方法
*/
@Override
public final String mapperKey(ReportEntry entry, String[] contents, JobTask jobtask) {
if(entry.getCondition() == null)
return this.generateKey(entry, contents, jobtask);
if(entry.getCondition().isInCondition(contents)){
return this.generateKey(entry, contents, jobtask);
}
return null;
}
protected abstract String generateKey(ReportEntry entry,String[] contents, JobTask jobtask);
protected abstract Object generateValue(ReportEntry entry,Object[] contents, JobTask jobtask);
/**
* 通过实现类的generateValue方法生成value，通过entry的filter对象filter具体的value值
*/
@Override
public final Object mapperValue(ReportEntry entry, Object[] contents,
JobTask jobtask) {
Object value = generateValue(entry, contents, jobtask);
return entry.getValueFilter().filter(value);
}
}