SortWithinGroups

Not available in Community Designer

Short Description
Ports
SortWithinGroups Attributes
Details
See also

Short Description

SortWithinGroups sorts input records within groups of records according to a sort key.

Component Same input metadata Sorted inputs Inputs Outputs Java CTL Auto-propagated metadata
SortWithinGroups-
yes
11-n
no
no
yes

Ports

Port typeNumberRequiredDescriptionMetadata
Input0
yes
For input data recordsAny
Output0
yes
For sorted data recordsInput 0
1-n
no
For sorted data recordsInput 0

SortWithinGroups Attributes

AttributeReqDescriptionPossible values
Basic
Group keyyes

A key defining groups of records. Non-adjacent records with the same key value are considered to be of different groups and each of these different groups is processed separately and independently on the others. For more information, see Group Key.

 
Sort keyyes

A key according to which the records are sorted within each group of adjacent records. For more information, see Sort Key.

 
Advanced
Buffer capacity  The maximum number of records parsed in memory. If there are more input records than this number, external sorting is performed. 10485760 (default) | 1-N
Number of tapes  The number of temporary files used to perform external sorting. Even number higher than 2. 8 (default) | 2*(1-N)

Details

SortWithinGroups receives data records (that are grouped according to a group key) through the single input port, sorts them according to a sort key separately within each group of adjacent records and copies each record to all connected output ports.

Sorting Null Values

Remember that SortWithinGroups processes records in which same fields of the Sort key attribute have null values as if these nulls were equal.

See also

Common Properties of Components
Specific Attribute Types
Common Properties of Transformers
Transformers Comparison