package jef.database.routing.sql;
import jef.database.routing.PartitionResult;
/**
* 抽象执行计划
* @author jiyi
*
*/
public abstract class AbstractExecutionPlan{
protected PartitionResult[] sites;
protected AbstractExecutionPlan(PartitionResult[] sites){
this.sites=sites;
}
public boolean isMultiDatabase() {
return sites.length>1;
}
public boolean isSimple() {
if(sites==null) return true;
return sites.length==1 && sites[0].tableSize()==1;
}
public boolean isEmpty() {
return sites==null || sites.length==0;
}
public PartitionResult[] getSites() {
return sites;
}
}