Reading a XML file dataStoreBD = DataStoreFinder.getDataStore(params) returns null

Question

I am having some problems developing a Maven project with Eclipse. I tried to search on the net, but there is nothing similar.

To sum up, I am using the WFSDataStore (geotools) to get the collection of features from an XML and then adding to a Database.

There are two different behaviours:

1. When I do Run As > Java Application everything is correct and the code is working.

2. When I do Run As > Maven (clean install tomcat:run-war). There is an error on line dataStoreBD = DataStoreFinder.getDataStore(params);, where dataStore is null: (If you want to check the getCapabilities parameter)

   public static void dataAccess(String getCapabilities, WFSDataStoreFactory dsf) throws Exception {
   // Variables
   // WFS Connection
   Map connectionParameters = new HashMap();
   connectionParameters.put(WFSDataStoreFactory.URL.key, getCapabilities);
   connectionParameters.put(WFSDataStoreFactory.PROTOCOL.key, false);
   connectionParameters.put(WFSDataStoreFactory.LENIENT.key, true);
   connectionParameters.put(WFSDataStoreFactory.MAXFEATURES.key, "5");
   connectionParameters.put(WFSDataStoreFactory.TIMEOUT.key, 600000);
   
   // Database Connection
   DataStore dataStoreBD = null;
   Transaction transaction = null;
   Filter filter = null;
   
   Map<String, String> params = new HashMap<String, String>();
   params.put("dbtype", configTypeDatabase);
   params.put("host", configIp);
   params.put("port", configPort);
   params.put("schema", configUser);
   params.put("database", configDatabase);
   params.put("user", configUser);
   params.put("passwd", configPassword);
   params.put("accessToUnderlyingConnectionAllowed", true);
   dataStoreBD = DataStoreFinder.getDataStore(params);
   // Etc. }
   

   The parameters are correct. I am getting them from a configuration file stored in my computer and I debugged like a thousand times to know what is really happening, but maybe there is a problem that I cannot see. After this code I have another piece:

   SimpleFeatureSource initialBDFeatureSource = dataStoreBD.getFeatureSource(configDatesTable);
   FeatureIterator<SimpleFeature> ifs = initialBDFeatureSource.getFeatures().features();
   

   The first line ends the program with this error:

   java.lang.NullPointerException at com.sitep.imi.acefat.server.daemon.InsertarBBDDDaemon.dataAccess(InsertarBBD DDaemon.java:972)

Answer 1

First of all, I deployed the project to try something else (using tomcat7 and adding the information of tomcat.xml (project path from Eclipse's workspace) to context.xml (tomcat7 path: C:\Program Files\Apache Software Foundation\Tomcat 7.0\conf).

Then I was studying the connections (pool, jndi and jdbc) because I was not able to connect properly to my database. That is why I endeded up changing the jdbc (a general-purpose interface to relational databases) connection to jndi (a general-purpose interface to naming systems) connection, like the following:

Map<String, String> params = new HashMap<String, String>();
params.put("dbtype", configTypeDatabase);
params.put("jndiReferenceName", "java:comp/env/jdbc/DBName");
params.put("accessToUnderlyingConnectionAllowed", true);
params.put("schema", configUser);

I omit some parameters because they are not significant nor irrelevant for jndi connection. The reason why is a little bit tricky because after resolving it I can't even explain it. For ever reason when I tried to run the Java Application or option 1 locally it always worked, but I defined the connection as a lookup (<jee:jndi-lookup id="dataSource" jndi-name="java:comp/env/jdbc/DBName"/>) so it only works with jndi when you have to run or deploy it with maven.

If I find more information I will update my answer to clear my it or improve it.