Interface: IBinaryFindKeyBuilder

Defines a life cycle for building a binary find key object using a field intercept pattern. This abstract design allows hooking of binary key creation into ETL artifact generation. The intent is to create a binary find key object that can be compared with a predecessor key object.

Methods

Get the binary find key object that was built (and is assumed to be complete), typically invoked after all fields in data row have been processed. Returns: a Comparable binary find key object. public java.lang.Comparable getKeyObject()

Reset building of key object, typically called when a new row of data is seen. public void reset()

Intercept a field value that is being processed and, if the field is part of the binary find key, set the field value into the key object being built. Parameters: aFieldValue - native (e.g., Integer, java.util.Date) field value, may possibly be NULL. aColdef - defines the column associated with the field value. aMapperLineNumber - line number of Mapper tuple (data row) where field value occurs. Throws: MJTranslateException - if field should be set into binary find key but cannot be. public void setKeyFieldIfApplicable(java.lang.Object aFieldValue, com.arsi.mj.maprpt.entity.handler.AnnotatedColumnDef aColdef, int aMapperLineNumber)     throws com.arsi.mj.MJTranslateException