archive/net.sourceforge.phpeclipse.quantum.sql/src/com/quantum/adapters/AdapterFactory.java

   1 package com.quantum.adapters;
   2
   3 import java.util.ArrayList;
   4 import java.util.Collections;
   5 import java.util.List;
   6
   7 import com.quantum.Messages;
   8
   9 /**
  10  * @author root
  11  * Basically this Factory is a Singleton that is used to return the proper adapter
  12  */
  13 public class AdapterFactory {
  14         public static final String GENERIC = "GENERIC"; //$NON-NLS-1$
  15     public static final String ORACLE = "ORACLE"; //$NON-NLS-1$
  16     public static final String POSTGRES = "POSTGRES"; //$NON-NLS-1$
  17     public static final String MYSQL = "MYSQL"; //$NON-NLS-1$
  18     public static final String DB2 = "DB2"; //$NON-NLS-1$
  19     public static final String DB2AS400 = "DB2AS400"; //$NON-NLS-1$
  20         public static final String ADABASD = "ADABASD"; //$NON-NLS-1$
  21     public static final String INFORMIX = "INFORMIX"; //$NON-NLS-1$
  22         public static final String REDBRICK = "REDBRICK"; //$NON-NLS-1$
  23     public static final String SYBASE = "SYBASE"; //$NON-NLS-1$
  24
  25     private static AdapterFactory instance;
  26
  27     private ArrayList drivers;
  28
  29     private AdapterFactory() {
  30         loadDrivers();
  31     }
  32     public static synchronized AdapterFactory getInstance() {
  33         if (instance == null) {
  34                 instance = new AdapterFactory();
  35         }
  36         return instance;
  37     }
  38
  39     /**
  40      * Master list of supported drivers
  41      */
  42     private void loadDrivers() {
  43         drivers = new ArrayList();
  44
  45                 DriverInfo generic = new DriverInfo(GENERIC, Messages.getString("adapters.generic"), new GenericAdapter()); //$NON-NLS-1$
  46                 DriverInfo oracle = new DriverInfo(ORACLE, Messages.getString("adapters.oracle"), new OracleAdapter()); //$NON-NLS-1$
  47                 DriverInfo db2 = new DriverInfo(DB2,  Messages.getString("adapters.db2"), new DB2Adapter()); //$NON-NLS-1$
  48                 DriverInfo db2as400 = new DriverInfo(DB2AS400,  Messages.getString("adapters.db2as400"), new DB2AS400Adapter()); //$NON-NLS-1$
  49                 DriverInfo postgres = new DriverInfo(POSTGRES,  Messages.getString("adapters.postgres"), new PostgresAdapter()); //$NON-NLS-1$
  50                 DriverInfo mysql = new DriverInfo(MYSQL,  Messages.getString("adapters.mysql"), new GenericAdapter()); //$NON-NLS-1$
  51                 DriverInfo adabasd = new DriverInfo(ADABASD, Messages.getString("adapters.adabasd"), new AdabasDAdapter()); //$NON-NLS-1$
  52         DriverInfo informix = new DriverInfo(INFORMIX, Messages.getString("adapters.informix"), new GenericAdapter()); //$NON-NLS-1$
  53                 DriverInfo redbrick = new DriverInfo(REDBRICK, Messages.getString("adapters.redbrick"), new RedBrickAdapter()); //$NON-NLS-1$
  54         DriverInfo sybase = new DriverInfo(SYBASE, Messages.getString("adapters.sybase"), new GenericAdapter()); //$NON-NLS-1$
  55
  56         drivers.add(generic);
  57         drivers.add(oracle);
  58         drivers.add(db2);
  59         drivers.add(db2as400);
  60         drivers.add(postgres);
  61         drivers.add(mysql);
  62                 drivers.add(adabasd);
  63         drivers.add(informix);
  64                 drivers.add(redbrick);
  65         drivers.add(sybase);
  66     }
  67
  68     public synchronized DatabaseAdapter getAdapter(String type){
  69         if (drivers == null) {
  70                 loadDrivers();
  71         }
  72         for (int i = 0; i < drivers.size(); i++) {
  73                 DriverInfo info = (DriverInfo) drivers.get(i);
  74                 if (type.equals(info.getDriverType())) {
  75                         return info.getAdapter();
  76                 }
  77         }
  78         // If its not a recognized driver, we return the generic one
  79                 for (int i = 0; i < drivers.size(); i++) {
  80                         DriverInfo info = (DriverInfo) drivers.get(i);
  81                         if (type.equals(GENERIC)) {
  82                                 return info.getAdapter();
  83                         }
  84                 }
  85                 return null;
  86     }
  87
  88     public synchronized DriverInfo[] getDriverList() {
  89         List list = new ArrayList(this.drivers);
  90         Collections.sort(list);
  91         return (DriverInfo[]) list.toArray(new DriverInfo[list.size()]);
  92     }
  93 }