Is there any way to make query in twitter4j search for more that one keyword?
Like instead of making more queries in my program I can make one which does it all, so I will have only one big stream of tweets that I can read?
I guess it would be something to replace this:
Query query1 = new Query("SOME RANDOM TEXT1" );
Query query2 = new Query("SOME RANDOM TEXT2" );
Query query3 = new Query("SOME RANDOM TEXT3" );
Query query4 = new Query("SOME RANDOM TEXT4" );
...
Create a FilterQuery object and then set the items to track
FilterQuery filterQuery = new FilterQuery();
Create an array of items to track
String[] itemsToTrack = {"python", "java", "php"};
Set the items to track using FilterQuerys' track method.
filterQuery.track(itemsToTrack);
Assuming you have already created Twitter/TwitterStream object, use the filter method to start streaming using the FilterQuery object just created.
twitterStream.filter(filterQuery);
Hope this helps.
Related
I am still very new to Zend and running into some issues on exporting my data to a CSV.
I found a great resource that explains the headers and download part here however I am running into issues when trying to export the actual data.
If I create a variable like $content = "test" the export works fine using the code above.
However when I duplicate my indexAction code, make some changes, and bring it into my downloadAction, I am getting issues that I believe are due to my content being returned as an Object rather than an array or string.
My Module is grabbing the SQL by using:
public function fetchAllMembers($order = null , $order_by = null, $selectwhere = null) {
$session = new SessionContainer('logggedin_user');
$sql = new Sql($this->adapter);
$select = new Select();
$select->from(array('u' => 'tbl_all_data'));
if ($selectwhere != null){
$select->where($selectwhere);
}
$select->order($order_by . ' ' . $order);
$selectString = $sql->getSqlStringForSqlObject($select);
$results = $this->adapter->query($selectString, Adapter::QUERY_MODE_EXECUTE);
$results->buffer();
return $results;
}
and my Controller is calling that SQL by using:
$content = $modulesTable->fetchAllMembers($order, $order_by, $where);
Any help would be greatly appreciated, and I don't need anyone to write the code for me just help with pointoing me in the right direction.
$this->adapter->query returns a Zend\Db\ResultSet object. So you need to call $results = $results->toArray(); to send an array.
Also you need to loop through the array and echo it out in your view file.
Results, returned by adapter are ResultSet type. I guess you need to call at least
current()
method to grab some data. And they will be of array type, so, again you need to do something with them.
toArray() is often used to quickly get data.
More sophisticated way to get data, is to use next() method with current():
$firstThing = $result->current();
$result->next();
$result->next();
$thirdThing = $result->current();
It's just an example, but it can be useful in some cases.
In my Seeder, I do the below, the order of which they land in the DB seems to be different now and then! I need the order to be consistent because I refer to the IDs using static variables stored. Why is the order different? Can I make it consistent? Thank you.
List<BadgeGroup> BGs = new List<BadgeGroup>();
BadgeGroup Unclassified = new BadgeGroup() { Description = "Unclassified" };
BGs.Add(Unclassified);
BadgeGroup NumVotesOnPost = new BadgeGroup() { Description = "Number of votes on a post" };
BGs.Add(NumVotesOnPost);
foreach (BadgeGroup BG in BGs)
db.BadgeGroups.AddOrUpdate(BG);
db.SaveChanges();
When you save a list of objects, EF doesn't guarantee that it'll be saved in that order. After you save, you can iterate through the objects to get their ids.
I'm just starting out with ZF2 and I've run into a stumbling block and I cant find any useful advice on the internet.
Setting up retrieval of data from a single table and injecting it directly into a specific model is easy, for example, pulling data from a single row from 'school' table and injecting to a 'school' model.
However, I have some slightly more complex data and can't figure out how to return the data in the form of the correct model. For example, pulling multiple addresses from a school address table with a join on the school table.
I've got the following method in my AddressTable object...
public function fetchAllSchoolAddresses($school_id)
{
$stmt = $this->adapter->createStatement();
$stmt->prepare("CALL get_school_addresses(3)");
$stmt->getResource()->bindParam(3, $school_id, \PDO::PARAM_INT, 3);
$resultSet = $stmt->execute();
$addresses = new \ArrayObject();
if(!empty($resultSet)){
foreach ($resultSet as $result) {
$addresses->append($result);
}
}
return $addresses;
}
This quite nicely returns an array of addresses data but I want these results to be returned as Address objects. I'm not sure how to do this?
ZF2 comes with some standard Hydrators, which you can extend / modify if you wish.
http://framework.zend.com/manual/2.0/en/modules/zend.stdlib.hydrator.html
You could create a Hydrator for your School Object, and a Hydrator for your Address object.
The hydrators will build the object for you given the array data from the database for example
For example, you would Hydrate your School Object, and then find all addresses (like above) and use another hydrator to hydrate those. You would then add those to the School object to get your object graph as needed
$school->addAddress($address); // etc
Have a look here to see an example of using Hydrators and Hydrating ResultSets:
http://blog.evan.pro/zf2-tablegateway-hydration
http://framework.zend.com/manual/2.0/en/modules/zend.db.result-set.html
for exampple you could do something like this:
// How ever you want to get your database result do it here..
// this is where you get all addresses for your School
$stmt = $driver->createStatement($sql);
$stmt->prepare($parameters);
$result = $stmt->execute();
$resultSet = new HydratingResultSet(new ReflectionHydrator, new SchoolAddress);
$resultSet->initialize($result);
foreach ($resultSet as $address) {
$school->addAddress($address);
echo $address->getCity() . ' ' . $user->getPostcode() . PHP_EOL;
}
You would have a resultset (collection) of Addresses to add to your School.
That's code is just a very rough example hacked from the code in the docs to give an idea of what you do
How about this?
if(!empty($resultSet)){
foreach ($resultSet as $result) {
$address = new Address();
$address->exchangeArray($result);
$addresses->append($address);
}
}
I am trying to make following query in Propel:
$criteria = new Criteria();
$criteria->clearSelectColumns();
$criteria->addSelectColumn(TableName::COLUMN1)
->addSelectColumn(TableName::COLUMN2)
->addAsColumn('alias1', 'DATE('.TableName::INIT_TIME.')')
->addAsColumn('alias2', 'COUNT('.TableName::DOWNLOAD_START_TIME.')')
->addGroupByColumn('DATE('.TableName::INIT_TIME.')')
->addGroupByColumn(TableName::DOWNLOAD_START_TIME);
$logs = TableName::doSelect($criteria);
It seems that everything OK and according to MySQL log file query generated and saved to server right. However I cannot get values of aggregated columns.
doSelect returns array of TableName objects which have no methods to fetch aggregated columns. So, how can I do it?
PS: I am talking about symfony 1.4 with Propel if it matters.
You should avoid the use of Criteria, use the ModelCriteria API instead (documentation available at: http://www.propelorm.org/reference/model-criteria.html)
The following query:
<?php
$criteria = new Criteria();
$criteria->clearSelectColumns();
$criteria->addSelectColumn(TableName::COLUMN1)
->addSelectColumn(TableName::COLUMN2)
->addAsColumn('alias1', 'DATE('.TableName::INIT_TIME.')')
->addAsColumn('alias2', 'COUNT('.TableName::DOWNLOAD_START_TIME.')')
->addGroupByColumn('DATE('.TableName::INIT_TIME.')')
->addGroupByColumn(TableName::DOWNLOAD_START_TIME);
$logs = TableName::doSelect($criteria);
Can be rewritten as below:
$query = TableNameQuery::create()
->select(array('Column1', 'Column2'))
->withColumn('DATE(InitTime)', 'alias1')
->withColumn('COUNT(DownloadStartTime)', 'alias2')
->groupBy('alias1')
->groupByDownloadStartTime()
;
$logs = $query->find();
Note you won't select both columns alias1 and alias2 as you didn't add them to the selected columns in your code. You can do that by adding the two alias to the select() clause:
->select(array('Column1', 'Column2', 'alias1', 'alias2'))
I used this snippet to retrieve and fetch data when I followed this same approach, but selecting only one column in my criteria through addSelectColumn:
$logs = TableName::doSelectStmt($criteria);
$data = $logs->fetchAll(PDO::FETCH_COLUMN, 0);
I hope this can help you.
My method is to make a query and iterate through a recordset. As suggested I use FETCH_BOTH to get array positions, but names as well. I take those values and hydrate my object, but also manually populate the properties of the object that are meant to hold the aggregate values. I pass those objects back to my application and use them as normal objects would be used in my view.
$stmt = self::doSelectStmt($c);
// empty array for now
$results = array();
// lets iterate through this
while($row = $stmt->fetch(PDO::FETCH_BOTH)) {
// we need to create a new object
$division = new Division();
// and we'll hydrate each row turning into an object so we can use it easily
$division->hydrate($row);
// now here's the magic, this object did not exist from our tables, we'll fix that
$division->setNumPlayers($row['num_players']);
$division->setNumTeams($row['teams']);
// set the output object
$results[] = $division;
}
return $results; // array of objects including aggregate values
i'm working on a symfony project to manage a database. First i explain how it works:
In the database, all elements are associated to an unique element 'scene'. When a user accesses the application, chooses what scene he wants to see (it saves that in a user parameter). So when listing elements, the application should only list elements associated with the scene selected by the user.
*Note: all elements have an scene attribute in the table definition.
So my problem comes here:
I developed a listing of an element entities using the help of a sfPropelPager class to paginate. Also added some filters to search in the list, and for that i used the filter system provided by symfony (<element>FormFilter.class.php and stuff).
Now i want the list to not show elements from other scenes than the selected by the user.
How can i do to add additional criteria to the criteria given by the filter class?
or How would you solve the problem?
here is my action code:
public function executeUnidadfilter(sfWebRequest $request){
$this->filter = new BaUnidadorganizativaTblFormFilter();
$c = $this->filter->getCriteria();
$this->filter->bind($request->getParameter($this->filter->getName()));
if($this->filter->isValid()){
$this->pager = new sfPropelPager('BaUnidadorganizativaTbl',$this->sfPropelPagerLines);
echo $this->getUser()->getEscenario();
$this->pager->setCriteria($c);
$this->pager->init();
}else{
$this->pager = new sfPropelPager('BaUnidadorganizativaTbl',$this->sfPropelPagerLines);
$this->pager->init();
}
$this->setTemplate('Unidadlist');
}
*Note: 'scene' mentioned below is Escenario in the code
thank you very much for your time
I solved the problem. The trouble was that i assigned the formfilter generated criteria to my criteria var Before the filter was filled. That's why of the error.
The resulting code is that:
public function executeUnidadfilter(sfWebRequest $request){
$this->filter = new BaUnidadorganizativaTblFormFilter();
$this->filter->bind($request->getParameter($this->filter->getName()));
if($this->filter->isValid()){
$this->pager = new sfPropelPager('BaUnidadorganizativaTbl',$this->sfPropelPagerLines);
$esc = $this->getUser()->getEscenario();
$c = new Criteria();
$c = $this->filter->getCriteria();
$c->addAnd('codigo_escenario',$esc);
$this->pager->setCriteria($c);
$this->pager->init();
}else{
$this->pager = new sfPropelPager('BaUnidadorganizativaTbl',$this->sfPropelPagerLines);
$this->pager->setCriteria($this->filter->getCriteria());
$this->pager->init();
}
$this->message=null;
$this->messageType=null;
$this->setTemplate('Unidadlist');
}