Time Period Format Validation

The Registry will validate observation dates against an expected format. This Data Validator is called “Time Period Format” and enforces that format of the reported time periods match the expected value defined in the DSD. Note: This Data Validator is only applied if the Data Structure has a dimension called “FREQ”. This time formats are defined as follows:

Format	Frequency Code	Example Usage
Yearly	A	2001
Half-Of-Year	S	2001-S1
Third-Of-Year	T	2001-T3
Quarter-Of-Year	Q	2001-Q4
Month	M	2001-12
Week	W	2001-W52
Date	D	2001-12-31
Hour	H	2001-12-31T23
Date Time	I	2001-12-31T23:59:59

Alternate Half-Year Format

The Registry also supports an alternate Half-Year format. With this alternate format, the value of “Half Of Year” may be represented by an H and the Hourly format is not supported.

To enable this mode, the Registry must be started with a Java System variable called “TF_ALTERNATE_HALF_YEAR” must be specified and set to “true”.

The simplest way to perform this is by modifying the setenv.bat or setenv.sh file. To illustrate this:

 SET JAVA_OPTS=-DTF_ALTERNATE_HALF_YEAR=true
 (For Windows systems)

 export JAVA_OPTS=-DTF_ALTERNATE_HALF_YEAR=true
 (For Unix systems)

If this is provided correctly, this will be reported in the startup sequence of the Registry with a log entry like the following:

 2021-12-31 23:59:59.123 INFO main io.sdmx.core.fmr.application.FusionRegistryApplicationInitialiser - Using 'Alternate Half-Year' Setting

or alternatively by performing a GET request to the System Properties Web Service which is detailed here.