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  package org.apache.cayenne.dba.sybase;
  
  import org.apache.cayenne.configuration.runtime.DbAdapterDetector;
  import org.apache.cayenne.dba.DbAdapter;
  import org.apache.cayenne.di.AdhocObjectFactory;
  import org.apache.cayenne.di.Inject;
  
  import java.sql.DatabaseMetaData;
  import java.sql.SQLException;
  
  /**
   * Detects Sybase database from JDBC metadata.
   *
   * @since 1.2
   */
  public class SybaseSniffer implements DbAdapterDetector {
  
      protected AdhocObjectFactory objectFactory;
  
      public SybaseSniffer(@Inject AdhocObjectFactory objectFactory) {
          this.objectFactory = objectFactory;
      }
  
      @Override
      public DbAdapter createAdapter(DatabaseMetaData md) throws SQLException {
          // JTDS driver returns "sql server" for Sybase, so need to handle it differently
          String driver = md.getDriverName();
          if (driver != null && driver.toLowerCase().startsWith("jtds")) {
              String url = md.getURL();
              return url != null && url.toLowerCase().startsWith("jdbc:jtds:sybase:")
                      ? objectFactory.newInstance(DbAdapter.class, SybaseAdapter.class.getName()) : null;
          } else {
              String dbName = md.getDatabaseProductName();
              return dbName != null && dbName.toUpperCase().contains("ADAPTIVE SERVER")
                      ? objectFactory.newInstance(DbAdapter.class, SybaseAdapter.class.getName()) : null;
          }
      }
  }
  