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Allow implementors to control network syncing #33

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Allow implementors to control network syncing #33

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23 changes: 18 additions & 5 deletions src/edu/mit/mobile/android/content/SimpleContentProvider.java
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Original file line number Diff line number Diff line change
Expand Up @@ -453,7 +453,8 @@ public int delete(Uri uri, String selection, String[] selectionArgs) {
}
final int count = mDBHelperMapper.delete(match, this, db, uri, selection, selectionArgs);

getContext().getContentResolver().notifyChange(uri, null);
// Never need to synchronize deletes.
getContext().getContentResolver().notifyChange(uri, null, false);

return count;
}
Expand Down Expand Up @@ -557,7 +558,7 @@ public Uri insert(Uri uri, ContentValues values) {
}
final Uri newUri = mDBHelperMapper.insert(match, this, db, uri, values);
if (newUri != null) {
getContext().getContentResolver().notifyChange(uri, null);
getContext().getContentResolver().notifyChange(uri, null, shouldSyncChanges(values));
}
return newUri;
}
Expand All @@ -579,17 +580,19 @@ public int bulkInsert(Uri uri, ContentValues[] values) {
int numSuccessfulAdds = 0;
db.beginTransaction();
try {
boolean syncToNetwork = false;

for (final ContentValues cv : values) {
final Uri newUri = mDBHelperMapper.insert(match, this, db, uri, cv);
final Uri newUri = mDBHelperMapper.insert(match, this, db, uri, cv);
if (newUri != null) {
numSuccessfulAdds++;
syncToNetwork = syncToNetwork || shouldSyncChanges(cv);
}
}
db.setTransactionSuccessful();

if (numSuccessfulAdds > 0) {
getContext().getContentResolver().notifyChange(uri, null);
getContext().getContentResolver().notifyChange(uri, null, syncToNetwork);
}
} finally {
db.endTransaction();
Expand Down Expand Up @@ -647,12 +650,22 @@ public int update(Uri uri, ContentValues values, String selection, String[] sele
final int changed = mDBHelperMapper.update(match, this, db, uri, values, selection,
selectionArgs);
if (changed != 0) {
getContext().getContentResolver().notifyChange(uri, null);
getContext().getContentResolver().notifyChange(uri, null, shouldSyncChanges(values));
}
return changed;
}

// ///////////////////// private methods

/**
* Given the values, determine if the network sync should be called.
* @param values
* @return true if changes should be synced to network.
*/
protected boolean shouldSyncChanges(ContentValues values) {
return true;
}

/**
* Generates a name for the database from the content provider.
*
Expand Down