trait QueryPlan[DS <: GeoMesaDataStore[DS]] extends AnyRef

Plan for querying a GeoMesaDataStore

DS

type of this data store

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Type Members

  1. abstract type Results

    Type of raw results returned from the underlying database

Abstract Value Members

  1. abstract def explain(explainer: Explainer, prefix: String = ""): Unit

    Explains details on how this query plan will be executed

    Explains details on how this query plan will be executed

    explainer

    explainer to use for explanation

    prefix

    prefix for explanation lines, used for nesting explanations

  2. abstract def filter: FilterStrategy

    Reference back to the strategy

  3. abstract def maxFeatures: Option[Int]

    Max features to return from the scan

  4. abstract def projection: Option[QueryReferenceSystems]

    Geometry projection

  5. abstract def reducer: Option[FeatureReducer]

    Optional reduce step for simple features coming back

  6. abstract def resultsToFeatures: ResultsToFeatures[Results]

    Transform results coming back from a raw scan into features

  7. abstract def scan(ds: DS): CloseableIterator[Results]

    Runs the query plan against the underlying database

    Runs the query plan against the underlying database

    ds

    data store - provides connection object and metadata

  8. abstract def sort: Option[Seq[(String, Boolean)]]

    Sort fields and reverse order flags (true flips order to descending, false keeps order as ascending)

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