private static List<IRecord> getUpdated(
IDataStore prev, RecordIdRetriever currRetr, int prevFieldIndex) {
List<IRecord> updated = new ArrayList<IRecord>();
for (int i = 0; i < prev.getRecordsCount(); i++) {
IRecord prevRec = prev.getRecordAt(i);
IField prevIdField = prevRec.getFieldAt(prevFieldIndex);
Assert.assertNotNull(prevIdField, "prevIdField");
Object prevId = prevIdField.getValue();
Assert.assertNotNull(prevId, "prevId");
IRecord currRec = currRetr.getRecordById(prevId);
if (currRec == null) {
// deleted
continue;
}
// check updated by position of field
// a impossible improvement: check the changes by field meta's name
List<IField> prevFields = prevRec.getFields();
List<IField> currFields = currRec.getFields();
if (prevFields.size() != currFields.size()) {
updated.add(currRec);
continue;
}
// check updated by checking fields values
for (int j = 0; j < prevFields.size(); j++) {
IField prevField = prevFields.get(j);
IField currField = currFields.get(j);
Assert.assertNotNull(prevField, "prevField");
Assert.assertNotNull(currField, "currField");
Object prevValue = prevField.getValue();
Object currValue = currField.getValue();
boolean equals = areEquals(prevValue, currValue);
if (!equals) {
updated.add(currRec);
break;
}
}
}
return updated;
}
private static Map<Object, IRecord> getRecordsById(
List<IRecord> updatedOrAdded, int idFieldIndex) {
Map<Object, IRecord> res = new HashMap<Object, IRecord>(updatedOrAdded.size());
for (IRecord iRecord : updatedOrAdded) {
IField fieldId = iRecord.getFieldAt(idFieldIndex);
Assert.assertNotNull(fieldId, "fieldId");
Object value = fieldId.getValue();
Assert.assertNotNull(value, "value");
res.put(value, iRecord);
}
return res;
}
private static List<IRecord> getAdded(
IDataStore prev, RecordRetriever currRetr, int prevFieldIndex) {
List<IRecord> added = new ArrayList<IRecord>();
for (int i = 0; i < currRetr.countRecords(); i++) {
IRecord currRec = currRetr.getRecord(i);
IField currIdField = currRec.getFieldAt(prevFieldIndex);
Assert.assertNotNull(currIdField, "currId");
Object id = currIdField.getValue();
Assert.assertNotNull(id, "id");
if (prev.getRecordByID(id) == null) {
added.add(currRec);
}
}
return added;
}
private static List<IRecord> getDeleted(IDataStore prev, IDataStore curr, int prevFieldIndex) {
List<IRecord> deleted = new ArrayList<IRecord>();
for (int i = 0; i < prev.getRecordsCount(); i++) {
IRecord prevRec = prev.getRecordAt(i);
IField prevIdField = prevRec.getFieldAt(prevFieldIndex);
Assert.assertNotNull(prevIdField, "prevIdField");
Object prevId = prevIdField.getValue();
Assert.assertNotNull(prevId, "prevId");
IRecord currRec = curr.getRecordByID(prevId);
if (currRec == null) {
deleted.add(prevRec);
continue;
}
}
return deleted;
}