org.apache.iotdb.spark.tsfile.qp.optimizer

类 RemoveNotOptimizer

java.lang.Object

org.apache.iotdb.spark.tsfile.qp.optimizer.RemoveNotOptimizer

所有已实现的接口:

IFilterOptimizer

public class RemoveNotOptimizer
extends Object
implements IFilterOptimizer

构造器概要

构造器

构造器和说明
RemoveNotOptimizer()

方法概要

限定符和类型	方法和说明
FilterOperator	optimize(FilterOperator filter) get DNF(disjunctive normal form) for this filter operator tree.

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

RemoveNotOptimizer

public RemoveNotOptimizer()

方法详细资料

optimize

public FilterOperator optimize(FilterOperator filter)
                        throws RemoveNotException

get DNF(disjunctive normal form) for this filter operator tree. Before getDNF, this op tree must be binary, in another word, each non-leaf node has exactly two children.

指定者:

optimize 在接口中 IFilterOptimizer

参数:

filter - filter operator to be optimized

返回:

optimized filter operator

抛出:

RemoveNotException - excepiton in remove not optimizing