Package backend.linguisticFeatures

Class TopicDAO

java.lang.Object

backend.linguisticFeatures.TopicDAO

public class TopicDAO
extends Object

Author:

Kai

Constructor Summary

Constructors

Constructor	Description
TopicDAO()

Method Summary

Modifier and Type	Method	Description
void	close()
void	delete(String topic)
String	findByTopic(String topic)	Finds a document by documentId and returns it as a JSON string.
List<org.bson.Document>	getAllTopics()	Returns all topics from the collection.
List<Speech_impl>	getSpeechesByTopic(String id)	Returns a list of speeches by topic.
List<Speech_impl>	getSpeechesByTopics(List<String> topics)
Set<String>	getSpeechIdsByTopics(List<String> topics)	Findet alle Reden-IDs für mehrere Topics.
void	save(String jsonData)	Saves a JSON string to MongoDB.
void	update(String jsonData)	Updates a document using a JSON string.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

TopicDAO

public TopicDAO()
         throws IOException

Throws:

IOException

Method Details

getAllTopics

public List<org.bson.Document> getAllTopics()

Returns all topics from the collection.

Returns:

List mit allen Topics

getSpeechesByTopic

public List<Speech_impl> getSpeechesByTopic(String id)
                                     throws IOException

Returns a list of speeches by topic.

Parameters:

id - id des topics.

Throws:

IOException

getSpeechIdsByTopics

public Set<String> getSpeechIdsByTopics(List<String> topics)

Findet alle Reden-IDs für mehrere Topics.

Parameters:

topics - Liste der Topic-IDs

Returns:

Set von Speech-IDs, die zu mindestens einem der Topics gehören

getSpeechesByTopics

public List<Speech_impl> getSpeechesByTopics(List<String> topics)
                                      throws IOException

Parameters:

topics - Liste der Topic-IDs

Returns:

Liste von Speech_impl-Objekten

Throws:

IOException - wenn ein Datenbankfehler auftritt

save

public void save(String jsonData)

Saves a JSON string to MongoDB.

findByTopic

public String findByTopic(String topic)

Finds a document by documentId and returns it as a JSON string.

update

public void update(String jsonData)

Updates a document using a JSON string.

delete

public void delete(String topic)

close

public void close()