Package com.activeviam.directquery.api

Class MeasureMapping

java.lang.Object
com.activeviam.directquery.api.MeasureMapping
public final class MeasureMapping extends Object
Mapping between an aggregation on the fields of a schema and the column of the aggregate table.

  • Method Details

    • count

      public static MeasureMapping count(String targetColumnName)
      Creates a mapping for a pre-aggregated count.
      Parameters:
      targetColumnName - the name of the column containing the pre-aggregated count.

    • sum

      public static MeasureMapping sum(com.activeviam.database.api.schema.FieldPath originField, String targetColumnName)
      Creates a mapping for a pre-aggregated Sum.
      Parameters:
      originField - the field of the origin schema which is aggregated.
      targetColumnName - the name of the column containing the pre-aggregated sum.

    • min

      public static MeasureMapping min(com.activeviam.database.api.schema.FieldPath originField, String targetColumnName)
      Creates a mapping for a pre-aggregated minimum.
      Parameters:
      originField - the field of the origin schema which is aggregated.
      targetColumnName - the name of the column containing the pre-aggregated min.

    • max

      public static MeasureMapping max(com.activeviam.database.api.schema.FieldPath originField, String targetColumnName)
      Creates a mapping for a pre-aggregated maximum.
      Parameters:
      originField - the field of the origin schema which is aggregated.
      targetColumnName - the name of the column containing the pre-aggregated max.

    • avg

      public static MeasureMapping avg(com.activeviam.database.api.schema.FieldPath originField, String targetSumField, String targetColumnName)
      Creates a mapping for a pre-aggregated average. Note that average cannot simply be pre-aggregated into a single column containing the average, in order to be able to re-aggregate the data it requires two pre-aggregated columns: one containing the pre-aggregated sum and the other containing the pre-aggregated count.
      Parameters:
      originField - the field of the origin schema which is aggregated.
      targetSumField - the name of the column containing the pre-aggregated sum.
      targetColumnName - the name of the column containing the pre-aggregated count.

    • sumProduct

      public static MeasureMapping sumProduct(List<com.activeviam.database.api.schema.FieldPath> originFields, String targetColumnName)
      Creates a mapping for a pre-aggregated sum product.
      Parameters:
      originFields - the fields of the origin schema on which the sum product is applied.
      targetColumnName - the name of the column containing the pre-aggregated sum product.

    • agg

      public static MeasureMapping agg(String aggregationFunctionKey, List<com.activeviam.database.api.schema.FieldPath> originFields, List<String> targetColumnNames)

    • getAggregationFunctionKey

      public String getAggregationFunctionKey()

    • getOriginFields

      public List<com.activeviam.database.api.schema.FieldPath> getOriginFields()

    • getTargetColumnNames

      public List<String> getTargetColumnNames()

    • equals

      public boolean equals(Object o)
      Overrides:
      equals in class Object

    • hashCode

      public int hashCode()
      Overrides:
      hashCode in class Object

    • toString

      public String toString()
      Overrides:
      toString in class Object