Examples with UpdateArticleMutation com.amazonaws.mobileconnectors.appsync.demo.UpdateArticleMutation used on opensource projects

Example 1 with UpdateArticleMutation

use of com.amazonaws.mobileconnectors.appsync.demo.UpdateArticleMutation in project aws-mobile-appsync-sdk-android by awslabs.

the class TestConflictResolver method resolveConflict.

@SuppressWarnings({ "NullableProblems", "ConstantConditions" })
@Override
public void resolveConflict(ConflictResolutionHandler handler, JSONObject serverState, JSONObject clientState, String recordIdentifier, String operationType) {
    Log.v(TAG, "OperationType is [" + operationType + "]");
    if (operationType.equalsIgnoreCase("UpdateArticleMutation")) {
        try {
            if (clientState == null) {
                Log.v(TAG, "Failing conflict as client state was null");
                handler.fail(recordIdentifier);
                return;
            }
            // For the purposes of this test conflict handler
            // we will fail mutations if the title is ALWAYS DISCARD.
            JSONObject input = clientState.getJSONObject("input");
            if (input == null) {
                Log.v(TAG, "Failing conflict as input was null");
                handler.fail(recordIdentifier);
                return;
            }
            final String title = input.getString("title");
            if ("ALWAYS DISCARD".equals(title)) {
                Log.v(TAG, "Failing conflict as title was ALWAYS DISCARD");
                handler.fail(recordIdentifier);
                return;
            }
            String id = input.getString("id");
            String author = input.getString("author");
            if (id == null || author == null || title == null) {
                Log.v(TAG, "Failing conflict as id, author or title was null");
                handler.fail(recordIdentifier);
            }
            int resolvedVersion = serverState.getInt("version");
            if ("RESOLVE_CONFLICT_INCORRECTLY".equals(title)) {
                // This will fail again.
                Log.v(TAG, "Resolving conflict incorrectly");
                resolvedVersion = resolvedVersion - 1;
            } else {
                Log.v(TAG, "Resolving conflict correctly");
            }
            UpdateArticleInput updateArticleInput = UpdateArticleInput.builder().id(id).title(title).author(author).expectedVersion(resolvedVersion).build();
            UpdateArticleMutation updateArticleMutation = UpdateArticleMutation.builder().input(updateArticleInput).build();
            handler.retryMutation(updateArticleMutation, recordIdentifier);
        } catch (JSONException jsonException) {
            jsonException.printStackTrace();
            // in case of un-expected errors, we fail the mutation
            // we can also call the below method if we want server data to be accepted instead of client.
            handler.fail(recordIdentifier);
        }
    } else {
        handler.fail(recordIdentifier);
    }
}