Package com.orchestranetworks.addon.mame.service.mergefunction

Interface FieldMergeFunction

  • Functional Interface:
    This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
    @FunctionalInterface
public interface FieldMergeFunction
    Represents a function that allows you to define a merge field value based on a given field context.

    Code Sample

     // Survive based on the “source’s last update timestamp”
 public class SourceLastUpdateMergeFunctionExecutor implements FieldMergeFunction {
      public MergedFieldValue apply(FieldMergeContext fieldMergeContext) {
          List matchRecords = fieldMergeContext.getRecords();
          Adaptation latestRecord = fieldMergeContext.getGoldenRecord();
          Date latestDateTime = latestRecord
                                .getDate(SupplierPaths._Root_Supplier._SrcSystemAudit_SrcLastUpdatedDate);
          for (Adaptation matchRecord : matchRecords)
          {
              Date timestamp = matchRecord
                     .getDate(SupplierPaths._Root_Supplier._SrcSystemAudit_SrcLastUpdatedDate);
              if (timestamp == null)
              {
                  continue;
              }
              if (latestDateTime == null || latestDateTime.compareTo(timestamp) < 0)
              {
                  latestDateTime = timestamp;
                  latestRecord = matchRecord;
              }
          }
          return fieldMergeContext.createMergedValue(latestRecord.getOccurrencePrimaryKey());
      }
 }

    • Method Detail

      • apply

        MergedFieldValue apply​(FieldMergeContext fieldMergeContext)

        Applies this function to the given field merge context.

        This method is invoked every time when deciding on a survivor field.

        Returns:
        MergedFieldValue Returns the merged value for a field in a golden record.