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Comparing records

Sometimes you need to know what’s the difference between records. I made a simple function to do just that.It takes two records and returns a container with the field IDs and the values from both records. For simplicity I used a flattened container instead of more complicated data structures. Feel free to replace it with nested containers or some kind of collection.

I added this to the class Global for easy access.

public static container compareRecords(Common _record1, Common _record2)
{
SysDictTable dictTable = new SysDictTable(_record1.TableId);
SysDictField dictField;
FieldId fieldId, extFieldId;
container ret;
int i, j;
;

if (_record1.TableId != _record2.TableId)
return conNull();

for (i=1; i<=dictTable.fieldCnt(); ++i)
{
fieldId = dictTable.fieldCnt2Id(i);
dictField = new SysDictField(_record1.tableId, fieldId);

if (!dictField.isSystem())
{
for (j=1; j<= dictField.arraySize(); ++j)
{
extFieldId = fieldId2Ext(fieldId, j);

if (_record1.(extFieldId) != _record2.(extFieldId))
{
ret += [extFieldId, _record1.(extFieldId), _record2.(extFieldId)];
}
}
}
}

return ret;
}
As you can see it only compares records of the same type and skips system fields (e.g. RecId). Special care is taken to handle array fields correctly.

Using it is quite straightforward.

static void demoCompareRecords(Args _args)
{
CustTable custTable1 = CustTable::find('1101'); // CEE demo data
CustTable custTable2 = CustTable::find('1102'); // CEE demo data

container con;
int i;
;

con = Global::compareRecords(custTable1, custTable2);

for (i=1; i<=conLen(con); i+=3)
{
info(strFmt("%1: '%2' <-> '%3'"
,fieldId2Name(tableNum(CustTable), conPeek(con, i))
,conPeek(con, i+1)
,conPeek(con, i+2)
)
);
}
}

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