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 Summary

Modifier and Type	Method	Description
MergedFieldValue	apply(FieldMergeContext fieldMergeContext)	Applies this function to the given field merge context.

Method Details

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.