public Map<String, GridParameter> getParameters() {
if (parameters == null) readParameterTable();
return parameters;
}
/**
* Looks for the parameter table which matches the center, subcenter and table version from the
* tables array. If this is the first time asking for this table, then the parameters for this
* table have not been read in yet, so this is done as well.
*
* @param center - integer from PDS octet 5, representing Center.
* @param subcenter - integer from PDS octet 26, representing Subcenter
* @param number - integer from PDS octet 4, representing Parameter Table Version
* @param firstTry - Is this the first call or are we trying the wild cards
* @return GribPDSParamTable matching center, subcenter, and number
*/
private static GribPDSParamTable readParameterTable(
int center, int subcenter, int number, boolean firstTry) {
if (firstTry) wmoTable = number;
GribPDSParamTable[] localCopy = paramTables; // thread safe
for (GribPDSParamTable table : localCopy) {
if (center == table.center_id) {
if ((table.subcenter_id == -1) || (subcenter == table.subcenter_id)) {
if (number == table.table_number) {
// now that this table is being used, check to see if the
// parameters for this table have been read in yet.
// If not, initialize table and read them in now.
if (table.parameters == null) {
if (!firstTry) {
logger.warn(
"GribPDSParamTable: Using default table:"
+ table.path
+ " ("
+ table.center_id
+ ":"
+ table.subcenter_id
+ ":"
+ table.table_number
+ ")");
}
table.readParameterTable();
if (table.parameters
== null) // failed - maybe theres another entry table in paramTables
continue;
// success - initialize other tables parameters with the same name
for (int j = 0; j < paramTables.length; j++) {
GribPDSParamTable tab = paramTables[j];
if (tab.path.equals(table.path)) {
tab.parameters = table.parameters;
}
}
}
return table;
}
}
}
}
// Try with the wild cards
if (number != -1) {
return readParameterTable(center, subcenter, -1, false);
} else if (subcenter != -1) {
logger.warn(
"GribPDSParamTable: Could not find table for center:"
+ center
+ " subcenter:"
+ subcenter
+ " number:"
+ wmoTable);
return readParameterTable(center, -1, -1, false);
} else if (center != -1) {
// return readParameterTable(-1, -1, -1, false);
return readParameterTable(-1, -1, wmoTable, false);
}
return null;
}