Module datarush.library

Package com.pervasive.datarush.operators.record

package com.pervasive.datarush.operators.record
Provides operators for manipulating record structure. This encompasses a number of activities:
  • Adding new fields to or modifying existing fields of the record. This can be either injection or replacement with a constant or derived value. Values are derived from the field of the record using ScalarValuedFunctions.
  • Deleting, renaming, or reordering fields of the record.
  • Combining records from two sources into a single record in a pairwise fashion. For combining records based on shared keys, use join operators.
    • Classes
      Class
      Description
      ColumnsToRows
      Normalize records by transposing values from row columns into multiple rows.
      DeriveFields
      Applies one or more functions to the input record data.
      DiscoverDomain
      Utility operator for discovering the domain of string fields.
      FieldDerivation
      Defines how a field's value in the output is derived from fields in the input.
      FilterFields
      Base class for operators which filter fields in the input records.
      MergeFields
      Merges two streams of data with an equivalent number of rows into one.
      RemapFields
      Rearranges and renames fields in a record.
      RemoveFields
      Removes a subset of fields from the input records.
      RetainFields
      Preserves a subset of fields from the input records.
      RowsToColumns
      The RowsToColumns operator is used to pivot data from a narrow representation (rows) into a wider representation (columns).
      SelectFields
      Preserves a subset of fields from the input records.