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added the ability to check if a like is alredy present 

git-svn-id: http://svn.research-infrastructures.eu/public/d4science/gcube/trunk/portal/social-networking-library@117281 82a268e6-3cf1-43bd-a215-b396298e98cf
This commit is contained in:
Massimiliano Assante 2015-07-16 14:27:33 +00:00
parent d921f5b282
commit d8948a8580
1 changed files with 53 additions and 19 deletions
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72
src/main/java/org/gcube/portal/databook/server/DBCassandraAstyanaxImpl.java
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@ -520,6 +520,34 @@ public final class DBCassandraAstyanaxImpl implements DatabookStore {
}
return toReturn;
}
/**
* helper method that return whether the user
* @param userid user identifier
* @param feedid the feed identifier
* @return true if the feed id liked already
*/
private boolean isFeedLiked(String userid, String feedid) {
OperationResult<Rows<String, String>> result = null;
try {
result = conn.getKeyspace().prepareQuery(cf_UserLikedFeeds)
.getKeySlice(userid)
.execute();
} catch (ConnectionException e) {
e.printStackTrace();
}
// Iterate rows and their columns looking for the feeid id
for (Row<String, String> row : result.getResult()) {
for (Column<String> column : row.getColumns()) {
if (column.getStringValue().compareTo(feedid)==0)
return true;
}
}
return false;
}
/**
* helper method that retrieve all the feed Ids belonging to an application
* @param appid application identifier
@ -1309,25 +1337,31 @@ public final class DBCassandraAstyanaxImpl implements DatabookStore {
e.printStackTrace();
return false;
}
// Inserting data
MutationBatch m = conn.getKeyspace().prepareMutationBatch();
//an entry in the feed CF
m.withRow(cf_Likes, like.getKey().toString())
.putColumn("Timestamp", like.getTime().getTime()+"", null)
.putColumn("Userid", like.getUserid(), null)
.putColumn("Feedid",like.getFeedid(), null)
.putColumn("FullName",like.getFullName(), null)
.putColumn("ThumbnailURL", like.getThumbnailURL(), null);
//and an entry in the UserLikesCF
m.withRow(cf_UserLikedFeeds, like.getUserid()).putColumn(like.getKey(), like.getFeedid(), null);
if (isFeedLiked(like.getUserid(), feedId)) {
_log.info("User " + like.getUserid() + " already liked Feed " + feedId);
return true;
}
else {
// Inserting data
MutationBatch m = conn.getKeyspace().prepareMutationBatch();
//an entry in the feed CF
m.withRow(cf_Likes, like.getKey().toString())
.putColumn("Timestamp", like.getTime().getTime()+"", null)
.putColumn("Userid", like.getUserid(), null)
.putColumn("Feedid",like.getFeedid(), null)
.putColumn("FullName",like.getFullName(), null)
.putColumn("ThumbnailURL", like.getThumbnailURL(), null);
//and an entry in the UserLikesCF
m.withRow(cf_UserLikedFeeds, like.getUserid()).putColumn(like.getKey(), like.getFeedid(), null);
try {
m.execute();
} catch (ConnectionException e) {
e.printStackTrace();
return false;
}
return updateFeedLikesCount(toLike, true);
try {
m.execute();
} catch (ConnectionException e) {
e.printStackTrace();
return false;
}
return updateFeedLikesCount(toLike, true);
}
}
/**
* {@inheritDoc}
@ -1721,7 +1755,7 @@ public final class DBCassandraAstyanaxImpl implements DatabookStore {
if (column.getStringValue().compareTo(status[i].toString())==0)
invitesIds.add(column.getName());
}
}
}
else {