/**
* A private method to read the connection string parameter from the web.xml file
*
* @return the database connection string
*/
private String getConnectionString() {
if (InputUtils.isValid(rdf.getContextParam("databaseConnectionString")) == false) {
throw new RuntimeException(
"Unable to read the connection string parameter from the web.xml file");
} else {
return rdf.getContextParam("databaseConnectionString");
}
}
public DatabaseManager(String connectionString) {
if (InputUtils.isValid(connectionString) == false) {
throw new IllegalArgumentException("The connection string cannot be null or empty");
} else {
this.connectionString = connectionString;
}
}
/**
* A method to build a collection of collaborator objects representing a network based on an
* organisation
*
* @param id the id of the central organisation
* @param radius the number of edges required from the central contributor
* @return the collection of collaborator objects
*/
@SuppressWarnings("rawtypes")
public TreeMap<Integer, Collaborator> getRawCollaboratorData_org(String id, int radius) {
// check the parameters
if (InputUtils.isValidInt(id) == false) {
throw new IllegalArgumentException("Error: the id parameter is required");
}
if (InputUtils.isValidInt(radius, ExportServlet.MIN_DEGREES, ExportServlet.MAX_DEGREES)
== false) {
throw new IllegalArgumentException(
"Error: the radius parameter must be between "
+ ExportServlet.MIN_DEGREES
+ " and "
+ ExportServlet.MAX_DEGREES);
}
// define helper variables
// collection of collaborators
java.util.TreeMap<Integer, Collaborator> cId_cObj_map =
new java.util.TreeMap<Integer, Collaborator>();
// set of collaborators that we've already processed
java.util.TreeSet<Integer> foundCollaboratorsSet = new java.util.TreeSet<Integer>();
// define other helper variables
String contributor_id = null;
QuerySolution row = null;
Collaborator collaborator = null;
String sql =
"SELECT DISTINCT b.eventid "
+ "FROM events a, orgevlink b "
+ "WHERE b.organisationid = ? " // +id
+ "AND a.eventid = b.eventid";
int[] param = {Integer.parseInt(id)};
java.sql.ResultSet resultSet = db.exePreparedStatement(sql, param);
ArrayList<String> eventResults = new ArrayList<String>();
try {
// check to see that data was returned
if (!resultSet.last()) {
db.tidyup();
return null;
} else resultSet.beforeFirst();
// loop through the resultset
while (resultSet.next() == true) {
eventResults.add(resultSet.getString(1));
}
} catch (java.sql.SQLException ex) {
System.out.println("Exception: " + ex.getMessage());
resultSet = null;
}
db.tidyup();
// helper
int first = 0;
// define the query
String sparqlQuery1 =
"PREFIX foaf: <"
+ FOAF.NS
+ "> "
+ "PREFIX ausestage: <"
+ AuseStage.NS
+ "> "
+ "PREFIX event: <http://purl.org/NET/c4dm/event.owl#> "
+ "PREFIX dcterms: <http://purl.org/dc/terms/> "
+ "SELECT DISTINCT ?agent ?givenName ?familyName "
+ "WHERE { ";
for (String event : eventResults) {
if (first > 0) {
sparqlQuery1 += "UNION ";
}
first++;
sparqlQuery1 +=
"{<ausstage:e:"
+ event
+ "> a event:Event; "
+ " event:agent ?agent. "
+ " ?agent a foaf:Person; "
+ " foaf:givenName ?givenName; "
+ " foaf:familyName ?familyName. "
+ " } ";
}
sparqlQuery1 += " } ";
// execute query
ResultSet results = rdf.executeSparqlQuery(sparqlQuery1);
// now we transfer the results to a TreeMap <Integer,
while (results.hasNext()) {
row = results.nextSolution();
contributor_id = AusStageURI.getId(row.get("agent").toString());
collaborator = new Collaborator(contributor_id);
cId_cObj_map.put(Integer.parseInt(contributor_id), collaborator);
foundCollaboratorsSet.add(Integer.parseInt(contributor_id));
}
rdf.tidyUp();
return cId_cObj_map;
} // end getRawCollaboratorData_org method
/**
* A method to build a list of Collaboration objects representing a list of collaborations
* associated with a collaborator
*
* @param id the unique identifier of a collaborator
* @return a CollaborationList object containing a list of Collaboration objects
*/
public CollaborationList getCollaborationList_org(String org_id, String id) {
// check on the input parameters
if (InputUtils.isValidInt(id) == false) {
throw new IllegalArgumentException("The id parameter cannot be null");
}
// declare helper variables
CollaborationList list = new CollaborationList(id);
// define other helper variables
Collaboration collaboration = null;
// define other helper variables
String partner = null;
Integer count = null;
String firstDate = null;
String lastDate = null;
// define the base sql query
String sqlQuery =
"SELECT distinct count(*), con.contributorid, min(e.first_date), max(e.first_date) "
+ "FROM contributor con, conevlink c , conevlink c2, orgevlink o, events e "
+ "WHERE o.organisationid = ? " // + org_id + " "
+ "AND c.eventid = O.EVENTID "
+ "AND e.eventid = O.EVENTID "
+ "AND e.eventid = c.EVENTID "
+ "AND c.contributorid != ?" // + id + " "
+ "AND con.contributorid = c.contributorid "
+ "AND c2.contributorid = ? " // + id + " "
+ "AND c2.eventid = c.eventid "
+ "GROUP BY con.contributorid, con.first_name ";
int[] param = {Integer.parseInt(org_id), Integer.parseInt(id), Integer.parseInt(id)};
// execute the query
java.sql.ResultSet resultSet = db.exePreparedStatement(sqlQuery, param);
try {
// check to see that data was returned
if (!resultSet.last()) {
db.tidyup();
return null;
} else resultSet.beforeFirst();
// loop though the resulset
while (resultSet.next()) {
// get the data
partner = resultSet.getString(2);
count = resultSet.getInt(1);
firstDate = resultSet.getDate(3).toString();
lastDate = resultSet.getDate(4).toString();
// create the collaboration object
collaboration = new Collaboration(id, partner, count, firstDate, lastDate);
// add the collaboration to the list
list.addCollaboration(collaboration);
}
} catch (java.sql.SQLException ex) {
System.out.println("Exception: " + ex.getMessage());
resultSet = null;
}
db.tidyup();
// return the list of collaborations
return list;
} // end the CollaborationList method