Package org.apache.iotdb.tsfile.read.filter.operator

Class Like<T extends java.lang.Comparable<T>>

  • Type Parameters:
    T - comparable data type
    All Implemented Interfaces:
    java.io.Serializable, Filter
    Direct Known Subclasses:
    ValueFilter.ValueLike
    public class Like<T extends java.lang.Comparable<T>>
extends java.lang.Object
implements Filter, java.io.Serializable
    Like.
    See Also:
    Serialized Form

    • Field Summary

      Fields 
      Modifier and Type Field Description
      protected FilterType filterType  
      protected boolean not  
      protected java.util.regex.Pattern pattern  
      protected java.lang.String value  

    • Constructor Summary

      Constructors 
      Constructor Description
      Like()  
      Like​(java.lang.String value, FilterType filterType, boolean not)
      The main idea of this part comes from https://codereview.stackexchange.com/questions/36861/convert-sql-like-to-regex/36864

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      boolean allSatisfy​(Statistics statistics)
      To examine whether all data points are satisfied with the filter.
      boolean containStartEndTime​(long startTime, long endTime)
      To examine whether the partition [startTime, endTime] is subsets of filter.
      Filter copy()  
      void deserialize​(java.nio.ByteBuffer buffer)  
      boolean equals​(java.lang.Object o)  
      FilterSerializeId getSerializeId()  
      int hashCode()  
      Filter reverse()  
      boolean satisfy​(long time, java.lang.Object value)
      To examine whether the single point(with time and value) is satisfied with the filter.
      boolean satisfy​(Statistics statistics)
      To examine whether there are data points satisfied with the filter.
      boolean satisfyStartEndTime​(long startTime, long endTime)
      To examine whether the min time and max time are satisfied with the filter.
      void serialize​(java.io.DataOutputStream outputStream)  
      java.lang.String toString()  

      • Methods inherited from class java.lang.Object

        clone, finalize, getClass, notify, notifyAll, wait, wait, wait

    • Field Detail

      • value

        protected java.lang.String value

      • pattern

        protected java.util.regex.Pattern pattern

      • not

        protected boolean not

    • Constructor Detail

      • Like

        public Like()

      • Like

        public Like​(java.lang.String value,
            FilterType filterType,
            boolean not)
        The main idea of this part comes from https://codereview.stackexchange.com/questions/36861/convert-sql-like-to-regex/36864
        Throws:
        java.util.regex.PatternSyntaxException - if the regex expression's syntax is invalid

    • Method Detail

      • satisfy

        public boolean satisfy​(Statistics statistics)
        Description copied from interface: Filter
        To examine whether there are data points satisfied with the filter.
        Specified by:
        satisfy in interface Filter
        Parameters:
        statistics - statistics with min time, max time, min value, max value.

      • allSatisfy

        public boolean allSatisfy​(Statistics statistics)
        Description copied from interface: Filter
        To examine whether all data points are satisfied with the filter.
        Specified by:
        allSatisfy in interface Filter
        Parameters:
        statistics - statistics with min time, max time, min value, max value.

      • satisfy

        public boolean satisfy​(long time,
                       java.lang.Object value)
        Description copied from interface: Filter
        To examine whether the single point(with time and value) is satisfied with the filter.
        Specified by:
        satisfy in interface Filter
        Parameters:
        time - single point time
        value - single point value

      • satisfyStartEndTime

        public boolean satisfyStartEndTime​(long startTime,
                                   long endTime)
        Description copied from interface: Filter
        To examine whether the min time and max time are satisfied with the filter.
        Specified by:
        satisfyStartEndTime in interface Filter
        Parameters:
        startTime - start time of a page, series or device
        endTime - end time of a page, series or device

      • containStartEndTime

        public boolean containStartEndTime​(long startTime,
                                   long endTime)
        Description copied from interface: Filter
        To examine whether the partition [startTime, endTime] is subsets of filter.
        Specified by:
        containStartEndTime in interface Filter
        Parameters:
        startTime - start time of a partition
        endTime - end time of a partition

      • serialize

        public void serialize​(java.io.DataOutputStream outputStream)
        Specified by:
        serialize in interface Filter

      • deserialize

        public void deserialize​(java.nio.ByteBuffer buffer)
        Specified by:
        deserialize in interface Filter

      • toString

        public java.lang.String toString()
        Overrides:
        toString in class java.lang.Object

      • equals

        public boolean equals​(java.lang.Object o)
        Overrides:
        equals in class java.lang.Object

      • hashCode

        public int hashCode()
        Overrides:
        hashCode in class java.lang.Object