public static String getStringifyTargetIDPropName(ContentInfo contentInfo) {
String modifier;
ContentType ct = contentInfo.getContentType();
if (ct == ContentType.WALL) modifier = "post";
else modifier = ct.toString().toLowerCase();
return modifier + "_id";
}
public static ContentInfo getInfo(JSONObject responseJson, ContentType contentType)
throws Exception {
String id, ownerId, title;
title = "title";
if (contentType == ContentType.AUDIO) {
id = "aid";
ownerId = "owner_id";
} else if (contentType == ContentType.VIDEO) {
id = "vid";
ownerId = "owner_id";
} else if (contentType == ContentType.WALL) {
id = "id";
ownerId = "from_id";
} else {
throw new IllegalArgumentException("ContentType must be one of those: AUDIO, VIDEO, WALL");
}
ContentInfo contentInfo = new ContentInfo();
contentInfo.setContentType(contentType);
JSONObject body = responseJson;
try {
if (body.containsKey(id)) {
contentInfo.setId((long) body.get(id));
} else {
throw new IllegalArgumentException("Argument does not contain id key");
}
if (body.containsKey(ownerId)) {
contentInfo.setOwnerId((long) body.get(ownerId));
} else {
throw new IllegalArgumentException("Argument does not contain ownerId key");
}
// Not necessary parameter so no exception is thrown
if (body.containsKey(title)) {
contentInfo.setTitle((String) body.get(title));
} else {
contentInfo.setTitle("**No title**");
}
} catch (ClassCastException e) {
String msg =
"Invalid argument: types are not equal. "
+ "This may be internal program error. Details: "
+ e.getMessage();
throw new IllegalArgumentException(msg);
}
return contentInfo;
}