Packages

abstract class MetadataBackedStats extends RunnableStats with StatsBasedEstimator

Tracks stats via entries stored in metadata

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StatsBasedEstimator, RunnableStats, LazyLogging, GeoMesaStats, Closeable, AutoCloseable, AnyRef, Any
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Inherited
  1. MetadataBackedStats
  2. StatsBasedEstimator
  3. RunnableStats
  4. LazyLogging
  5. GeoMesaStats
  6. Closeable
  7. AutoCloseable
  8. AnyRef
  9. Any
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Visibility
  1. Public
  2. All

Instance Constructors

  1. new MetadataBackedStats(ds: DataStore, metadata: GeoMesaMetadata[Stat])

Type Members

  1. class MetadataStatUpdater extends StatUpdater with LazyLogging

    Stores stats as metadata entries

    Stores stats as metadata entries

    Attributes
    protected
  2. class MetadataStatWriter extends GeoMesaStatWriter

    Stat writer implementation

    Stat writer implementation

    Attributes
    protected

Abstract Value Members

  1. abstract def write(typeName: String, stats: Seq[WritableStat]): Unit

    Write stats

    Write stats

    typeName

    simple feature type name

    stats

    stats to write

    Attributes
    protected

Concrete Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##(): Int
    Definition Classes
    AnyRef → Any
  3. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  4. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  5. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native() @HotSpotIntrinsicCandidate()
  6. def close(): Unit
    Definition Classes
    MetadataBackedStats → RunnableStats → Closeable → AutoCloseable
  7. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  8. def equals(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  9. def estimateCount(sft: SimpleFeatureType, filter: Filter): Option[Long]

    Estimates the count for a given filter, based off the per-attribute metadata we have stored

    Estimates the count for a given filter, based off the per-attribute metadata we have stored

    sft

    simple feature type

    filter

    filter to apply - should have been run through QueryPlanFilterVisitor so all props are right

    returns

    estimated count, if available

    Attributes
    protected
    Definition Classes
    StatsBasedEstimator
  10. def getBounds(sft: SimpleFeatureType, filter: Filter = Filter.INCLUDE, exact: Boolean = false): ReferencedEnvelope

    Get the bounds for data that will be returned for a query

    Get the bounds for data that will be returned for a query

    sft

    simple feature type

    filter

    cql filter

    exact

    rough estimate, or precise bounds. note: precise bounds will likely be expensive.

    returns

    bounds

    Definition Classes
    GeoMesaStats
  11. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  12. def getCount(sft: SimpleFeatureType, filter: Filter, exact: Boolean, queryHints: Hints): Option[Long]

    Gets the number of features that will be returned for a query.

    Gets the number of features that will be returned for a query. May return -1 if exact is false and estimate is unavailable.

    sft

    simple feature type

    filter

    cql filter

    exact

    rough estimate, or precise count. note: precise count will likely be expensive.

    queryHints

    query hints that should be used for query execution

    returns

    count of features, if available - will always be Some if exact == true

    Definition Classes
    MetadataBackedStats → RunnableStats → GeoMesaStats
  13. def getEnumeration[T](sft: SimpleFeatureType, attribute: String, filter: Filter, exact: Boolean): Option[EnumerationStat[T]]

    Get an enumeration stat

    Get an enumeration stat

    T

    attribute type - must correspond to attribute binding

    sft

    simple feature type

    attribute

    attribute name to query

    filter

    cql filter

    exact

    rough estimates, or precise values. note: precise values will likely be expensive.

    Definition Classes
    RunnableStats → GeoMesaStats
  14. def getFrequency[T](sft: SimpleFeatureType, attribute: String, precision: Int, filter: Filter, exact: Boolean): Option[Frequency[T]]

    Get a frequency stat

    Get a frequency stat

    T

    attribute type - must correspond to attribute binding

    sft

    simple feature type

    attribute

    attribute name to query

    precision

    precision of the estimate - @see org.locationtech.geomesa.utils.stats.Frequency

    filter

    cql filter

    exact

    rough estimates, or precise values. note: precise values will likely be expensive.

    Definition Classes
    MetadataBackedStats → RunnableStats → GeoMesaStats
  15. def getHistogram[T](sft: SimpleFeatureType, attribute: String, bins: Int, min: T, max: T, filter: Filter, exact: Boolean): Option[Histogram[T]]

    Get a histogram stat

    Get a histogram stat

    T

    attribute type - must correspond to attribute binding

    sft

    simple feature type

    attribute

    attribute name to query

    bins

    number of buckets used to group values

    min

    minimum value used to create the initial histogram buckets

    max

    maximum value used to create the initial histogram buckets

    filter

    cql filter

    exact

    rough estimates, or precise values. note: precise values will likely be expensive.

    Definition Classes
    MetadataBackedStats → RunnableStats → GeoMesaStats
  16. def getMinMax[T](sft: SimpleFeatureType, attribute: String, filter: Filter, exact: Boolean): Option[MinMax[T]]

    Get the minimum and maximum values for the given attribute

    Get the minimum and maximum values for the given attribute

    T

    attribute type - must correspond to attribute binding

    sft

    simple feature type

    attribute

    attribute name to examine

    filter

    cql filter

    exact

    rough estimate, or precise values. note: precise values will likely be expensive.

    returns

    mix/max values and overall cardinality. types will be consistent with the binding of the attribute

    Definition Classes
    MetadataBackedStats → RunnableStats → GeoMesaStats
  17. def getSeqStat[T <: Stat](sft: SimpleFeatureType, queries: Seq[String], filter: Filter = Filter.INCLUDE, exact: Boolean = false): Seq[T]

    Gets arbitrary stats for multiple queries

    Gets arbitrary stats for multiple queries

    T

    type bounds, must match stat query strings

    sft

    simple feature type

    queries

    stats strings

    filter

    cql filter

    exact

    rough estimate, or precise values. note: precise values will likely be expensive.

    Definition Classes
    GeoMesaStats
  18. def getStat[T <: Stat](sft: SimpleFeatureType, query: String, filter: Filter = Filter.INCLUDE, exact: Boolean = false): Option[T]

    Get arbitrary stats

    Get arbitrary stats

    T

    type bounds, must match stat query strings

    sft

    simple feature type

    query

    stats string

    filter

    cql filter

    exact

    rough estimate, or precise values. note: precise values will likely be expensive.

    returns

    stats, if any

    Definition Classes
    MetadataBackedStats → RunnableStats → GeoMesaStats
  19. def getTopK[T](sft: SimpleFeatureType, attribute: String, filter: Filter, exact: Boolean): Option[TopK[T]]

    Get a top k stat

    Get a top k stat

    T

    attribute type - must correspond to attribute binding

    sft

    simple feature type

    attribute

    attribute name to query

    filter

    cql filter

    exact

    rough estimates, or precise values. note: precise values will likely be expensive.

    Definition Classes
    MetadataBackedStats → RunnableStats → GeoMesaStats
  20. def getZ3Histogram(sft: SimpleFeatureType, geom: String, dtg: String, period: TimePeriod, bins: Int, filter: Filter, exact: Boolean): Option[Z3Histogram]

    Get a Z3 histogram stat, where values are grouped based on combined geometry + date

    Get a Z3 histogram stat, where values are grouped based on combined geometry + date

    sft

    simple feature type

    geom

    geometry attribute to query

    dtg

    date attribute to query

    period

    time period used to calculate bins for each value

    bins

    number of buckets used to group values

    filter

    cql filter

    exact

    rough estimates, or precise values. note: precise values will likely be expensive.

    Definition Classes
    MetadataBackedStats → RunnableStats → GeoMesaStats
  21. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  22. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  23. lazy val logger: Logger
    Attributes
    protected
    Definition Classes
    LazyLogging
    Annotations
    @transient()
  24. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  25. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  26. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  27. def query[T <: Stat](sft: SimpleFeatureType, filter: Filter, query: String, queryHints: Hints = new Hints()): Option[T]

    Run an exact query against the data store

    Run an exact query against the data store

    T

    stat type

    sft

    simple feature type

    filter

    filter

    query

    stat string

    Attributes
    protected
    Definition Classes
    RunnableStats
  28. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  29. def toString(): String
    Definition Classes
    AnyRef → Any
  30. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  31. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native()
  32. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  33. val writer: GeoMesaStatWriter

    Gets a writer for updating stats

    Gets a writer for updating stats

    Definition Classes
    MetadataBackedStats → RunnableStats → GeoMesaStats

Deprecated Value Members

  1. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] ) @Deprecated
    Deprecated

Inherited from StatsBasedEstimator

Inherited from RunnableStats

Inherited from LazyLogging

Inherited from GeoMesaStats

Inherited from Closeable

Inherited from AutoCloseable

Inherited from AnyRef

Inherited from Any

Ungrouped