public static void insertPost(Post post, String type) {
try {
String postId = post.getId();
IdNameEntity idNameEntity = post.getFrom();
String userId = idNameEntity.getId();
String userName = idNameEntity.getName();
String commentsCount = post.getComments() == null ? "0" : post.getComments().size() + "";
String likeCount = post.getLikes() == null ? "0" : post.getLikes().size() + "";
String columnFamily = COLUMN_FAMILY_FACEBOOK_POST;
String rowKey = type;
String superColumn = postId + "-" + userId + "-" + userName;
Clock clock = new Clock(System.nanoTime());
Column column = new Column();
String columnName = commentsCount + "-" + likeCount;
column.setName(columnName.getBytes(UTF8));
String columnValue = post.getMessage();
if (!StringUtils.isBlank(columnValue)) {
column.setValue(columnValue.getBytes(UTF8));
} else {
column.setValue("".getBytes(UTF8));
}
column.setTimestamp(clock.timestamp);
cassandra.insertSuperColumn(columnFamily, rowKey, superColumn, column);
} catch (UnsupportedEncodingException e) {
logger.error("[Info: encoding invalid] - [Error: {}]", e.toString());
}
}
public static ColumnOrSuperColumn getPostPopular(String type, Integer rankingPosition) {
String rowKey = (type + "-" + rankingPosition);
List<ColumnOrSuperColumn> cscs =
cassandra.findColumnOrSuperColumn(COLUMN_FAMILY_FACEBOOK_POST_POPULAR, rowKey);
if (cscs != null && !cscs.isEmpty()) {
return cscs.get(0); // we are using "index_interval = 1", so we can get the first data
} else {
return null;
}
}
public static void removePost(Post post, String type) {
String postId = post.getId();
IdNameEntity idNameEntity = post.getFrom();
String userId = idNameEntity.getId();
String userName = idNameEntity.getName();
String columnFamily = COLUMN_FAMILY_FACEBOOK_POST;
String rowKey = type;
String superColumn = postId + "-" + userId + "-" + userName;
cassandra.removeSuperColumn(columnFamily, rowKey, superColumn);
}
public static void insertPostPopular(Post post, String type, Integer position) {
try {
String postId = post.getId();
IdNameEntity idNameEntity = post.getFrom();
String userId = idNameEntity.getId();
String userName = idNameEntity.getName();
String columnFamily = COLUMN_FAMILY_FACEBOOK_POST_POPULAR;
String rowKey = (type + "-" + position);
Clock clock = new Clock(System.nanoTime());
Column column = new Column();
String columnName = (postId + "-" + userId + "-" + userName);
column.setName(columnName.getBytes(UTF8));
String columnValue = post.getMessage();
column.setValue(columnValue.getBytes(UTF8));
column.setTimestamp(clock.timestamp);
cassandra.insertColumn(columnFamily, rowKey, column);
} catch (UnsupportedEncodingException e) {
logger.error("[Info: encoding invalid] - [Error: {}]", e.toString());
}
}
public static List<ColumnOrSuperColumn> getPost(String type) {
return cassandra.findColumnOrSuperColumn(COLUMN_FAMILY_FACEBOOK_POST, type);
}
public static Integer countPost(String type) {
return cassandra.countColumnOrSuperColumn(COLUMN_FAMILY_FACEBOOK_POST, type);
}
public static void removePostPopular(String type, Integer position) {
String columnFamily = COLUMN_FAMILY_FACEBOOK_POST_POPULAR;
String rowKey = (type + "-" + position);
cassandra.removeColumn(columnFamily, rowKey);
}