Skip to content

Instantly share code, notes, and snippets.

@brianmfear
Created May 24, 2022 11:58
Show Gist options
  • Save brianmfear/a141ea12be1bc17e80be783b39c06e21 to your computer and use it in GitHub Desktop.
Save brianmfear/a141ea12be1bc17e80be783b39c06e21 to your computer and use it in GitHub Desktop.
// https://salesforce.stackexchange.com/a/376822/2984
// Efficiently checking if any fields from a list of fields have changed
public class DataUtils {
public class Change {
public String[] changedFields = new String[0];
public sObject record1, record2;
Change(String[] changedFields, sObject record1, sObject record2) {
this.changedFields = changedFields;
this.record1 = record1;
this.record2 = record2;
}
}
// true if any fields requested have changed
public static Boolean hasFieldChanges(String[] fieldsToCheck, sObject firstRecord, sObject secondRecord) {
Map<String, Object> oldValues = firstRecord.getPopulatedFieldsAsMap();
Map<String, Object> newValues = secondRecord.getPopulatedFieldsAsMap();
oldValues.keySet().retainAll(fieldsToCheck);
newValues.keySet().retainAll(fieldsToCheck);
return oldValues != newValues;
}
// Convenience method for checking one record change, returns empty list of fields if no change.
// My preference is to avoid returning null values when possible, but the choice is yours.
public static Change findFieldChanges(String[] fieldsToCheck, sObject firstRecord, sObject secondRecord) {
Change[] results = findFieldChanges(fieldsToCheck, new sObject[] { firstRecord }, new sObject[] { secondRecord });
if(results.size() > 0) {
return results[0];
}
return new Change(new String[0], firstRecord, secondRecord);
}
// Returns a list of records that has at least one change, and the fields that changed
public static Change[] findChangedRecords(String[] fieldsToCheck, sObject[] firstRecordList, sObject[] secondRecordList) {
Change[] results = new Change[0];
for(Integer index = 0, size = firstRecordList.size(); index < size; index++) {
sObject firstRecord = firstRecordList[index];
sObject secondRecord = secondRecordList[index];
Map<String, Object> oldValues = firstRecord.getPopulatedFieldsAsMap();
Map<String, Object> newValues = secondRecord.getPopulatedFieldsAsMap();
String[] changedFields = new String[0];
for(String field: fields) {
if(oldValues.get(field) != newValues.get(field)) {
changedFields.add(field);
}
}
if(changedFields.size() > 0) {
results.add(new Change(changedFields, firstRecord, secondRecord));
}
}
return results;
}
}
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment