private static String writeOscarsXML(Connection db) throws Exception {
/*Create and open new oscars.xml file*/
PrintStream oscarFile = new PrintStream("oscars.XML");
oscarFile.println("<?xml version=\"1.0\"?>");
oscarFile.println("<oscars>");
/* Get oscars */
Statement stmt = db.createStatement();
ResultSet results = stmt.executeQuery("SELECT * FROM Oscar;");
ResultSetMetaData rsmd = results.getMetaData();
/* Create oscar XMLElements */
while (results.next()) {
XMLElement oscar = new XMLElement("oscar", null, false, 1);
String oscarID;
if (results.getString(2) == null) {
oscarID = "O" + results.getString(4) + "0000000";
} else {
oscarID = "O" + results.getString(4) + results.getString(2);
}
oscar.addAttribute("id", oscarID);
ArrayList<XMLElement> children = new ArrayList<XMLElement>();
/* Create children elements if needed */
for (int i = 3; i < 5; i++) {
if (results.getString(i) != null) {
XMLElement child = new XMLElement(rsmd.getColumnLabel(i), results.getString(i), false, 2);
children.add(child);
}
}
/*Add movie Attribute*/
oscar.addAttribute("movie_id", "M" + results.getString(1));
/*Add actor Attribute */
if (results.getString(2) != null) {
oscar.addAttribute("person_id", "P" + results.getString(2));
}
/*write oscar element and it's children to the file*/
oscarFile.println(oscar.getOpenTag());
for (XMLElement child : children) {
oscarFile.println(child.inlineElement());
}
oscarFile.println(oscar.getCloseTag());
}
oscarFile.println("</oscars>");
oscarFile.close();
return "oscar.xml has been written";
}
/**
* Private class that opens the xmL file, performs the queries, create the elements and write them
* to the movies.xml file
*
* @param db The database that is being queried
* @return a success message
* @throws Exception
*/
private static String writeMovieXML(Connection db) throws Exception {
/*Create and open new movie.xml file*/
PrintStream movieFile = new PrintStream("movies.XML");
movieFile.println("<?xml version=\"1.0\"?>");
movieFile.println("<movies>");
/* Get movies */
Statement stmt = db.createStatement();
ResultSet results = stmt.executeQuery("SELECT * FROM Movie;");
ResultSetMetaData rsmd = results.getMetaData();
/* Create movie XMLElements */
while (results.next()) {
XMLElement movie = new XMLElement("movie", null, false, 1);
movie.addAttribute("id", "M" + results.getString(1));
ArrayList<XMLElement> children = new ArrayList<XMLElement>();
/* Create children elements if needed */
for (int i = 2; i < 8; i++) {
if (results.getString(i) != null) {
XMLElement child = new XMLElement(rsmd.getColumnLabel(i), results.getString(i), false, 2);
children.add(child);
}
}
/*Add Directors Attribute*/
Statement dir = db.createStatement();
ResultSet directors =
dir.executeQuery(
"SELECT director_id FROM Director "
+ "WHERE movie_id = \""
+ results.getString(1)
+ "\"");
writePersonAtt("director", movie, directors);
/*Add Actors Attribute */
Statement act = db.createStatement();
ResultSet actors =
act.executeQuery(
"SELECT actor_id FROM Actor " + "WHERE movie_id = \"" + results.getString(1) + "\"");
writePersonAtt("actors", movie, actors);
/*Add Oscars Attribute */
Statement osc = db.createStatement();
ResultSet oscars =
osc.executeQuery(
"SELECT year, person_id FROM Oscar"
+ " WHERE movie_id = \""
+ results.getString(1)
+ "\"");
writeOscarAtt("oscars", movie, oscars);
/*write movie and it's children to the file*/
movieFile.println(movie.getOpenTag());
for (XMLElement child : children) {
movieFile.println(child.inlineElement());
}
movieFile.println(movie.getCloseTag());
}
movieFile.println("</movies>");
movieFile.close();
return "movies.xml has been written.";
}
private static String writePeopleXML(Connection db) throws Exception {
/*Create and open new xml file*/
PrintStream peopleFile = new PrintStream("people.XML");
peopleFile.println("<?xml version=\"1.0\"?>");
peopleFile.println("<people>");
/* Get People results */
Statement stmt = db.createStatement();
ResultSet results = stmt.executeQuery("SELECT * FROM Person;");
ResultSetMetaData rsmd = results.getMetaData();
/* Create person XMLElements */
while (results.next()) {
XMLElement person = new XMLElement("person", null, false, 1);
person.addAttribute("id", "P" + results.getString(1));
ArrayList<XMLElement> children = new ArrayList<XMLElement>();
/* Create children elements if needed */
for (int i = 2; i < 5; i++) {
if (results.getString(i) != null) {
XMLElement child = new XMLElement(rsmd.getColumnLabel(i), results.getString(i), false, 2);
children.add(child);
}
}
/*Add directed Attribute*/
Statement dir = db.createStatement();
ResultSet directed =
dir.executeQuery(
"SELECT movie_id FROM Director "
+ "WHERE director_id = \""
+ results.getString(1)
+ "\"");
writeMovieAtt("directed", person, directed);
/*Add actedIn Attribute */
Statement mov = db.createStatement();
ResultSet movie =
mov.executeQuery(
"SELECT movie_id FROM Actor " + "WHERE actor_id = \"" + results.getString(1) + "\"");
writeMovieAtt("actedIn", person, movie);
/*Add Oscars Attribute */
Statement osc = db.createStatement();
ResultSet oscars =
osc.executeQuery(
"SELECT year, person_id FROM Oscar"
+ " WHERE person_id = \""
+ results.getString(1)
+ "\"");
writeOscarAtt("oscars", person, oscars);
/*write people element and it's children to the file*/
peopleFile.println(person.getOpenTag());
for (XMLElement child : children) {
peopleFile.println(child.inlineElement());
}
peopleFile.println(person.getCloseTag());
}
peopleFile.println("</people>");
peopleFile.close();
return "people.xml has been written";
}