org.apache.predictionio.data.store

PEventStore

object PEventStore

This object provides a set of operation to access Event Store with Spark's parallelization

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  6. def aggregateProperties(appName: String, entityType: String, channelName: Option[String] = None, startTime: Option[DateTime] = None, untilTime: Option[DateTime] = None, required: Option[Seq[String]] = None)(sc: SparkContext): RDD[(String, PropertyMap)]

    Aggregate properties of entities based on these special events: $set, $unset, $delete events.

    Aggregate properties of entities based on these special events: $set, $unset, $delete events.

    appName

    use events of this app

    entityType

    aggregate properties of the entities of this entityType

    channelName

    use events of this channel (default channel if it's None)

    startTime

    use events with eventTime >= startTime

    untilTime

    use events with eventTime < untilTime

    required

    only keep entities with these required properties defined

    sc

    Spark context

    returns

    RDD[(String, PropertyMap)] RDD of entityId and PropetyMap pair

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  11. def finalize(): Unit

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  12. def find(appName: String, channelName: Option[String] = None, startTime: Option[DateTime] = None, untilTime: Option[DateTime] = None, entityType: Option[String] = None, entityId: Option[String] = None, eventNames: Option[Seq[String]] = None, targetEntityType: Option[Option[String]] = None, targetEntityId: Option[Option[String]] = None)(sc: SparkContext): RDD[Event]

    Read events from Event Store

    Read events from Event Store

    appName

    return events of this app

    channelName

    return events of this channel (default channel if it's None)

    startTime

    return events with eventTime >= startTime

    untilTime

    return events with eventTime < untilTime

    entityType

    return events of this entityType

    entityId

    return events of this entityId

    eventNames

    return events with any of these event names.

    targetEntityType

    return events of this targetEntityType:

    • None means no restriction on targetEntityType
    • Some(None) means no targetEntityType for this event
    • Some(Some(x)) means targetEntityType should match x.
    targetEntityId

    return events of this targetEntityId

    • None means no restriction on targetEntityId
    • Some(None) means no targetEntityId for this event
    • Some(Some(x)) means targetEntityId should match x.
    sc

    Spark context

    returns

    RDD[Event]

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