Class ValueMetadataComputation

  • Direct Known Subclasses:
    ConsolidationMetadataComputation, TransformationalMetadataComputation

    public abstract class ValueMetadataComputation
    extends Object
    Computation of value metadata. It is used currently in two contexts: 1. During expression evaluation where zero, one, or more input values are combined to form zero, one, or multiple output vales. 2. During consolidation where a set of the same values (possibly with different metadata) are combined into single value with given metadata (that have to be derived from the constituents). Preliminary implementation. For example, - it does no real consolidation: it simply adds all values into respective items; - it works with simplified computation model: its input is simply a list of input values (regardless of their parent item).