Package org.neo4j.graphdb

Interface ExecutionPlanDescription.ProfilerStatistics

Enclosing interface:
ExecutionPlanDescription
public static interface ExecutionPlanDescription.ProfilerStatistics
Instances describe statistics from the profiler of a particular step in the execution plan.

  • Method Details

    • hasRows

      boolean hasRows()
      Returns:
      if the number of rows was recorded.

    • getRows

      long getRows()
      Returns:
      number of rows processed by the associated execution step
      Throws:
      IllegalStateException - if no time was recorded.

    • hasDbHits

      boolean hasDbHits()
      Returns:
      if the number of DB hits was recorded.

    • getDbHits

      long getDbHits()
      Returns:
      number of database hits (potential disk accesses) caused by executing the associated execution step
      Throws:
      IllegalStateException - if no time was recorded.

    • hasPageCacheStats

      boolean hasPageCacheStats()
      Returns:
      if the number page cache hits and misses and the ratio was recorded.

    • getPageCacheHits

      long getPageCacheHits()
      Returns:
      number of page cache hits caused by executing the associated execution step
      Throws:
      IllegalStateException - if no time was recorded.

    • getPageCacheMisses

      long getPageCacheMisses()
      Returns:
      number of page cache misses caused by executing the associated execution step
      Throws:
      IllegalStateException - if no time was recorded.

    • getPageCacheHitRatio

      default double getPageCacheHitRatio()
      Returns:
      the ratio of page cache hits to total number of lookups or 0 if no data is available
      Throws:
      IllegalStateException - if no time was recorded.

    • hasTime

      boolean hasTime()
      Returns:
      if the time was recorded.

    • getTime

      long getTime()
      Returns:
      amount of time spent in the associated execution step.
      Throws:
      IllegalStateException - if no time was recorded.