FastFieldRules

FAST Field Interpretation Rules

|Field Op  |Presence  |PMAP |Value in Stream|Null? |App Value         |Dictionary        | 
|----------|----------|-----|---------------|------|------------------|------------------| 
|NOP       |Mandatory |None |Value          |N/A   |Value             |N/A               | 
|          |Optional  |None |Nullable Value |NULL  |None              |N/A               | 
|          |          |     |               |VALUE |Value             |N/A               | 
|Constant  |Mandatory |None |No             |N/A   |Constant          |Unchanged         | 
|          |Optional  |0    |No             |N/A   |None              |Unchanged         | 
|          |          |1    |No             |N/A   |Constant          |Unchanged         | 
|Default   |Mandatory |0    |No             |N/A   |Default           |Unchanged         | 
|          |          |1    |Value          |N/A   |Value             |Unchanged         | 
|          |Optional  |0    |No             |N/A   |Default           |Unchanged         | 
|          |          |1    |Nullable Value |NULL  |None              |Unchanged         | 
|          |          |     |               |VALUE |Value             |Unchanged         | 
|Copy      |Mandatory |0    |No             |N/A   |Dictionary        |Unchanged         | 
|          |          |1    |Value          |N/A   |Value             |Value             | 
|          |Optional  |0    |No             |N/A   |Dictionary        |Unchanged         | 
|          |          |1    |Nullable Value |NULL  |None              |Empty             | 
|          |          |     |               |VALUE |Value             |Value             | 
|Delta     |Mandatory |None |Delta          |N/A   |Dictionary + Delta|Dictionary + Delta| 
|          |Optional  |None |Nullable Delta |NULL  |None              |Unchanged         | 
|          |          |     |               |DELTA |Dictionary + Delta|Dictionary + Delta| 
|Increment |Mandatory |0    |No             |N/A   |Dictionary + 1    |Dictionary + 1    | 
|          |          |1    |Value          |N/A   |Value             |Value             | 
|          |Optional  |0    |No             |N/A   |Dictionary + 1    |Dictionary + 1    | 
|          |          |1    |Nullable Value |NULL  |None              |Empty             | 
|          |          |     |               |VALUE |Value             |Value             | 
|Tail      |Mandatory |0    |No             |N/A   |Dictionary        |Unchanged         | 
|          |          |1    |Tail           |N/A   |Dictionary * Tail |Dictionary * Tail | 
|          |Optional  |0    |No             |N/A   |Dictionary        |Unchanged         | 
|          |          |1    |Nullable Tail  |NULL  |None              |Empty             | 
|          |          |     |               |TAIL  |Dictionary * Tail |Dictionary * Tail |

Special Handling for Decimal Fields with individual operators for Exponent and Mantissa

|         |Mandatory treat as|Condition           |Optional treat as |  
|---------|------------------|--------------------|------------------| 
|Exponent |Mandatory Integer |                    | Optional Integer | 
|Mantissa |Mandatory Integer |Exponent is present | Mandatory Integer| 
|         |                  |Exponent not present| Absent           | 

Presence Map Bits: 0, 1, or 2 depending on treatment may change dynamically!