/**
* Will convert an {@code com.sola.instagram.model.User} model to our cassandra model, {@code
* com.andrewzurn.instagram.analyzer.model.SourceUser}, by extrapulating and calculating
* information based on the user's list of {@code
* com.andrewzurn.instagram.analyzer.model.RawUserMedia}. An optional updateDate can be passed in,
* for the case that we already have the User in our cassandra cluster, and need to merely update
* it's values.
*
* @param user the user to convert
* @param userRecentMedia the user's converted media
* @return the converted {@code com.andrewzurn.instagram.analyzer.model.SourceUser}
* @throws Exception if an error occures while accessing the {@code
* come.sola.isntagram.model.User} object.
*/
private SourceUser convertToSourceUser(User user, List<RawUserMedia> userRecentMedia)
throws Exception {
// gather engagement ratings for user
float averagedEngagementRating = 0;
float mostRecentMediaEngagementRating = 0;
try {
averagedEngagementRating =
analyticsUtils.averagedEngagementRating(userRecentMedia, user.getFollowerCount());
mostRecentMediaEngagementRating =
analyticsUtils.averagedEngagementRating(
userRecentMedia.subList(0, 1), user.getFollowerCount());
} catch (Exception e) {
// this was more than likely caused by calling the getFollowerCount() method
throw new InstagramApiException("ERROR while creating the engagement ratings.\n" + e);
}
// gather the impression and trending info for user
float trendingRating = analyticsUtils.getTrendingRating(userRecentMedia);
boolean trending = trendingRating > 0.0;
// gather location information and recent media ids
List<String> locations = this.mapLocations(userRecentMedia);
List<String> recentMediaIds = this.mapRecentMediaIds(userRecentMedia);
Date createdTime = new Date();
Date updatedTime = new Date();
return SourceUser.build(
user,
averagedEngagementRating,
mostRecentMediaEngagementRating,
trendingRating,
trending,
locations,
recentMediaIds,
createdTime,
updatedTime,
false,
null);
}
public SourceUser createSourceUser(User user, List<RawUserMedia> userMedias)
throws DataModelConverterException {
SourceUser sourceUser;
try {
sourceUser = this.convertToSourceUser(user, userMedias);
} catch (Exception e) {
throw new DataModelConverterException(
String.format(
"could not convert the user media to %s.",
user.getClass().getCanonicalName().toString()));
}
return sourceUser;
}
