Package org.apache.druid.query.groupby.having

Interface HavingSpec

All Superinterfaces:
Cacheable
All Known Implementing Classes:
AlwaysHavingSpec, AndHavingSpec, DimensionSelectorHavingSpec, DimFilterHavingSpec, EqualToHavingSpec, GreaterThanHavingSpec, LessThanHavingSpec, NeverHavingSpec, NotHavingSpec, OrHavingSpec
public interface HavingSpec extends Cacheable
A "having" clause that filters aggregated/dimension value. This is similar to SQL's "having" clause. HavingSpec objects are *not* thread-safe and must not be used simultaneously by multiple threads.

  • Method Summary

    Modifier and Type
    Method
    Description
    boolean
    eval(ResultRow row)
    Evaluates if a given row satisfies the having spec.
    void
    setQuery(GroupByQuery query)
    Informs this HavingSpec that rows passed to "eval" will originate from a particular groupBy query.

    Methods inherited from interface org.apache.druid.java.util.common.Cacheable

    getCacheKey

  • Method Details

    • setQuery

      void setQuery(GroupByQuery query)
      Informs this HavingSpec that rows passed to "eval" will originate from a particular groupBy query.

    • eval

      boolean eval(ResultRow row)
      Evaluates if a given row satisfies the having spec.
      Parameters:
      row - A Row of data that may contain aggregated values
      Returns:
      true if the given row satisfies the having spec. False otherwise.