package liquibase.ext.spatial.sqlgenerator;
   
   import liquibase.database.Database;
   import liquibase.database.core.DerbyDatabase;
   import liquibase.database.core.H2Database;
   import liquibase.statement.core.UpdateStatement;
   
   /**
    * <code>SpatialUpdateGeneratorGeoDB</code> generates the SQL for <code>UPDATING</code>ing
   * geometries in Apache Derby and H2.
   */
  public class SpatialUpdateGeneratorGeoDB extends AbstractSpatialUpdateGenerator {
     @Override
     public boolean supports(final UpdateStatement statement, final Database database) {
        return database instanceof DerbyDatabase || database instanceof H2Database;
     }
  
     /**
      * Returns the name of the function that converts Well-Known Text to a database-specific
      * geometry.
      * 
      * @return the name of the function that converts WKT to a geometry.
      */
     @Override
     public String getGeomFromWktFunction() {
        return "ST_GeomFromText";
     }
  
     /**
      * Always returns <code>true</code> for GeoDB.
      * 
      * @see AbstractSpatialInsertGenerator#isSridRequiredInFunction(Database)
      */
     @Override
     public boolean isSridRequiredInFunction(final Database database) {
        return true;
     }
  }