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Diffstat (limited to 'manuals_and_examples/examples/java/Lookup.java')
-rw-r--r-- | manuals_and_examples/examples/java/Lookup.java | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/manuals_and_examples/examples/java/Lookup.java b/manuals_and_examples/examples/java/Lookup.java new file mode 100644 index 0000000..4b5eefc --- /dev/null +++ b/manuals_and_examples/examples/java/Lookup.java @@ -0,0 +1,130 @@ +/* +* This file is part of rasdaman community. +* +* Rasdaman community is free software: you can redistribute it and/or modify +* it under the terms of the GNU General Public License as published by +* the Free Software Foundation, either version 3 of the License, or +* (at your option) any later version. +* +* Rasdaman community is distributed in the hope that it will be useful, +* but WITHOUT ANY WARRANTY; without even the implied warranty of +* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +* GNU General Public License for more details. +* +* You should have received a copy of the GNU General Public License +* along with rasdaman community. If not, see <http://www.gnu.org/licenses/>. +* +* Copyright 2003, 2004, 2005, 2006, 2007, 2008, 2009 Peter Baumann / +rasdaman GmbH. +* +* For more information please see <http://www.rasdaman.org> +* or contact Peter Baumann via <baumann@rasdaman.com>. +*/ +/************************************************************* + * + * + * PURPOSE: Example Java program for looking up a collection + * + * + ************************************************************/ + +import rasj.*; +import rasj.odmg.*; +import org.odmg.*; +import java.util.*; + +/** + * Example Java program for looking up a collection + * + * set the server name with -server, the database name with -database, the collection name with -collection, + * the port number with -port, the user login with -user, the password with -passwd + */ +public class Lookup +{ + public static void main(String[] args) + { + String server = "localhost"; + String base = "RASBASE"; + String coll = "rockies"; + String port = "7001"; + String user = "rasguest"; + String passwd = "rasguest"; + + for (int i=args.length-1; i>=0; i--) + { + //System.out.println(args[i]); + if (args[i].equals("-server")) + server = args[i+1]; + if (args[i].equals("-database")) + base = args[i+1]; + if (args[i].equals("-collection")) + coll = args[i+1]; + if (args[i].equals("-port")) + port = args[i+1]; + if (args[i].equals("-user")) + user = args[i+1]; + if (args[i].equals("-passwd")) + passwd = args[i+1]; + } + //System.out.println(server+base+coll+port+user+passwd); + + DBag resultBag = null; + Object result = null; + Transaction myTa = null; + Database myDb = null; + OQLQuery myQu = null; + + try + { + Implementation myApp = new RasImplementation("http://"+server+":"+port); + ((RasImplementation)myApp).setUserIdentification(user, passwd); + myDb = myApp.newDatabase(); + + System.out.println("Opening database ..."); + myDb.open(base, Database.OPEN_READ_ONLY); + + System.out.println("Starting transaction ..."); + myTa = myApp.newTransaction(); + myTa.begin(); + + System.out.println("Retrieving results ..."); + myQu = myApp.newOQLQuery(); + myQu.create("select img from "+coll+" as img"); + resultBag = (DBag)myQu.execute(); + if (resultBag != null) + { + Iterator iter = resultBag.iterator(); + while (iter.hasNext()) + { + result = iter.next(); + System.out.println(result); + } + System.out.println("All results"); + } + + System.out.println( "Committing transaction ..." ); + myTa.commit(); + + System.out.println( "Closing database ..." ); + myDb.close(); + + } + catch (org.odmg.ODMGException e) + { + System.out.println("An exception has occurred: " + e.getMessage()); + System.out.println("Try to abort the transaction ..."); + if(myTa != null) myTa.abort(); + + try + { + System.out.println("Try to close the database ..."); + if(myDb != null) myDb.close(); + } + catch ( org.odmg.ODMGException exp ) + { + System.err.println("Could not close the database: " + exp.getMessage()); + } + } + System.out.println( "Done." ); + } +} |