How to use

DbPlatforms

in

leap.db

/**
 * Checks is the db type aleady registered. the name compares ignore case.
 */
public static boolean exists(String name){
  return tryGet(name) != null;
}

/**
 * Returns all the registered {@link DbPlatform} objects.
 */
public static Iterable<DbPlatform> all(){
  return currentPlatforms().values();
}

for(DbPlatform platform : DbPlatforms.all()){
  if((db = platform.tryCreateDbInstance(name,ds,connection,dm)) != null){
    break;

/**
 * Returns the {@link DbPlatform} matched the given db type name.
 * 
 * <p>
 * The type name is case sensitive.
 * 
 * @throws ObjectNotFoundException if the given type name not exists.
 */
public static DbPlatform get(String name) throws ObjectNotFoundException {
  DbPlatform p = tryGet(name);
  if(null == p){
    throw new ObjectNotFoundException("No db platform '" + name + "' exists");	
  }
  return p;
}

/**
 * Returns the {@link DbPlatform} matched the given db type name.
 * 
 * <p>
 * Returns <code>null</code> if the given db type name not found.
 * 
 * <p>
 * The type name is case sensitive.
 */
public static DbPlatform tryGet(String name) throws ObjectNotFoundException {
  if(null == name){
    return null;
  }
  return currentPlatforms().get(name.toLowerCase());
}

  protected String resolveDbType(Resource r) {
    String filename = r.getFilename();
    if(null != filename){
      String filenameWithoutExt = Paths.getFileNameWithoutExtension(filename);
      int lastIndexOfUnderscore = filenameWithoutExt.lastIndexOf('_');
      if(lastIndexOfUnderscore > 0){
        String dbType = filenameWithoutExt.substring(lastIndexOfUnderscore + 1);
        if(DbPlatforms.tryGet(dbType) != null){
          return dbType;
        }
      }
    }
    return null;
  }
}

private static Map<String,DbPlatform> currentPlatforms(){
  return currentPlatforms(AppContext.current());
}