package org.basex.examples.server;

import org.basex.*;
import org.basex.api.client.*;
import org.basex.core.*;
import org.basex.core.cmd.*;

/**
 * This class demonstrates database access via the client/server architecture.
 *
 * @author BaseX Team 2005-17, BSD License
 */
public final class ServerCommands {
  /**
   * Runs the example code.
   * @param args (ignored) command-line arguments
   * @throws Exception exception
   */
  public static void main(final String... args) throws Exception {
    System.out.println("=== ServerCommands ===");

    // Start server on default port 1984
    BaseXServer server = new BaseXServer();

    // Create a client session with host name, port, user name and password
    System.out.println("\n* Create a client session.");

    try(ClientSession session = new ClientSession("localhost", 1984, "admin", "admin")) {

      // Create a database
      System.out.println("\n* Create a database.");

      session.execute(new CreateDB("input", "src/main/resources/xml/input.xml"));

      // Run a query
      System.out.println("\n* Run a query:");

      try(ClientQuery query = session.query("//li")) {
        System.out.println(query.execute());
      }

      // Faster version: specify an output stream and run a query
      System.out.println("\n* Run a query (faster):");

      session.setOutputStream(System.out);
      try(ClientQuery query = session.query("//li")) {
        query.execute();
      }
      System.out.println();

      // Reset output stream
      session.setOutputStream(null);

      // Run a query
      System.out.println("\n\n* Run a buggy query: ");

      try {
        session.execute(new XQuery("///"));
      } catch(final BaseXException ex) {
        System.out.println(ex.getMessage());
      }

      // Drop the database
      System.out.println("\n* Close and drop the database.");

      session.execute(new DropDB("input"));
    }

    // Stop the server
    System.out.println("\n* Stop the server.");

    server.stop();
  }
}