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UpdatabilityTest.java

/*
 Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
 

  The MySQL Connector/J is licensed under the terms of the GPLv2
  <http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>, like most MySQL Connectors.
  There are special exceptions to the terms and conditions of the GPLv2 as it is applied to
  this software, see the FLOSS License Exception
  <http://www.mysql.com/about/legal/licensing/foss-exception.html>.

  This program is free software; you can redistribute it and/or modify it under the terms
  of the GNU General Public License as published by the Free Software Foundation; version 2
  of the License.

  This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
  without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  See the GNU General Public License for more details.

  You should have received a copy of the GNU General Public License along with this
  program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth
  Floor, Boston, MA 02110-1301  USA



 */
package testsuite.simple;

import java.sql.DatabaseMetaData;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

import testsuite.BaseTestCase;

import com.mysql.jdbc.NotUpdatable;

/**
 * Tests for updatable result sets
 * 
 * @author Mark Matthews
 * @version $Id: UpdatabilityTest.java,v 1.1.2.1 2005/05/13 18:58:37 mmatthews
 *          Exp $
 */
00044 public class UpdatabilityTest extends BaseTestCase {
      /**
       * Creates a new UpdatabilityTest object.
       * 
       * @param name
       *            DOCUMENT ME!
       */
00051       public UpdatabilityTest(String name) {
            super(name);
      }

      /**
       * Runs all test cases in this test suite
       * 
       * @param args
       */
00060       public static void main(String[] args) {
            junit.textui.TestRunner.run(UpdatabilityTest.class);
      }

      /**
       * DOCUMENT ME!
       * 
       * @throws Exception
       *             DOCUMENT ME!
       */
00070       public void setUp() throws Exception {
            super.setUp();
            createTestTable();
      }

      /**
       * If using MySQL-4.1, tests if aliased tables work as updatable result
       * sets.
       * 
       * @throws Exception
       *             if an error occurs
       */
00082       public void testAliasedTables() throws Exception {
            DatabaseMetaData dbmd = this.conn.getMetaData();

            if (versionMeetsMinimum(4, 1)) {
                  Statement scrollableStmt = null;

                  try {
                        scrollableStmt = this.conn.createStatement(
                                    ResultSet.TYPE_SCROLL_INSENSITIVE,
                                    ResultSet.CONCUR_UPDATABLE);
                        this.rs = scrollableStmt
                                    .executeQuery("SELECT pos1 AS p1, pos2 AS P2, char_field AS cf FROM UPDATABLE AS UPD LIMIT 1");
                        this.rs.next();
                        this.rs.close();
                        this.rs = null;

                        scrollableStmt.close();
                        scrollableStmt = null;
                  } finally {
                        if (this.rs != null) {
                              try {
                                    this.rs.close();
                              } catch (SQLException sqlEx) {
                                    ; // ignore
                              }

                              this.rs = null;
                        }

                        if (scrollableStmt != null) {
                              try {
                                    scrollableStmt.close();
                              } catch (SQLException sqlEx) {
                                    ; // ignore
                              }

                              scrollableStmt = null;
                        }
                  }
            }
      }

      /**
       * Tests that the driver does not let you update result sets that come from
       * tables that don't have primary keys
       * 
       * @throws SQLException
       *             if an error occurs
       */
00131       public void testBogusTable() throws SQLException {
            this.stmt.executeUpdate("DROP TABLE IF EXISTS BOGUS_UPDATABLE");
            this.stmt.executeUpdate("CREATE TABLE BOGUS_UPDATABLE (field1 int)");

            Statement scrollableStmt = null;

            try {
                  scrollableStmt = this.conn.createStatement(
                              ResultSet.TYPE_SCROLL_INSENSITIVE,
                              ResultSet.CONCUR_UPDATABLE);
                  this.rs = scrollableStmt
                              .executeQuery("SELECT * FROM BOGUS_UPDATABLE");

                  try {
                        this.rs.moveToInsertRow();
                        fail("ResultSet.moveToInsertRow() should not succeed on non-updatable table");
                  } catch (NotUpdatable noUpdate) {
                        // ignore
                  }
            } finally {
                  if (scrollableStmt != null) {
                        try {
                              scrollableStmt.close();
                        } catch (SQLException sqlEx) {
                              ;
                        }
                  }

                  this.stmt.executeUpdate("DROP TABLE IF EXISTS BOGUS_UPDATABLE");
            }
      }

      /**
       * Tests that the driver does not let you update result sets that come from
       * queries that haven't selected all primary keys
       * 
       * @throws SQLException
       *             if an error occurs
       */
00170       public void testMultiKeyTable() throws SQLException {
            this.stmt.executeUpdate("DROP TABLE IF EXISTS MULTI_UPDATABLE");
            this.stmt
                        .executeUpdate("CREATE TABLE MULTI_UPDATABLE (field1 int NOT NULL, field2 int NOT NULL, PRIMARY KEY (field1, field2))");

            Statement scrollableStmt = null;

            try {
                  scrollableStmt = this.conn.createStatement(
                              ResultSet.TYPE_SCROLL_INSENSITIVE,
                              ResultSet.CONCUR_UPDATABLE);
                  this.rs = scrollableStmt
                              .executeQuery("SELECT field1 FROM MULTI_UPDATABLE");

                  try {
                        this.rs.moveToInsertRow();
                        fail("ResultSet.moveToInsertRow() should not succeed on query that does not select all primary keys");
                  } catch (NotUpdatable noUpdate) {
                        // ignore
                  }
            } finally {
                  if (scrollableStmt != null) {
                        try {
                              scrollableStmt.close();
                        } catch (SQLException sqlEx) {
                              // ignore
                        }
                  }

                  this.stmt.executeUpdate("DROP TABLE IF EXISTS MULTI_UPDATABLE");
            }
      }

      /**
       * DOCUMENT ME!
       * 
       * @throws SQLException
       *             DOCUMENT ME!
       */
00209       public void testUpdatability() throws SQLException {
            Statement scrollableStmt = null;

            try {
                  scrollableStmt = this.conn.createStatement(
                              ResultSet.TYPE_SCROLL_INSENSITIVE,
                              ResultSet.CONCUR_UPDATABLE);
                  this.rs = scrollableStmt
                              .executeQuery("SELECT * FROM UPDATABLE ORDER BY pos1");

                  this.rs.getMetaData().getColumnCount();

                  while (this.rs.next()) {
                        int rowPos = this.rs.getInt(1);
                        this.rs.updateString(3, "New Data" + (100 - rowPos));
                        this.rs.updateRow();
                  }

                  //
                  // Insert a new row
                  //
                  this.rs.moveToInsertRow();
                  this.rs.updateInt(1, 400);
                  this.rs.updateInt(2, 400);
                  this.rs.updateString(3, "New Data" + (100 - 400));
                  this.rs.insertRow();

                  // Test moveToCurrentRow
                  int rememberedPosition = this.rs.getRow();
                  this.rs.moveToInsertRow();
                  this.rs.moveToCurrentRow();
                  assertTrue("ResultSet.moveToCurrentRow() failed",
                              this.rs.getRow() == rememberedPosition);
                  this.rs.close();
                  this.rs = scrollableStmt
                              .executeQuery("SELECT * FROM UPDATABLE ORDER BY pos1");

                  boolean dataGood = true;

                  while (this.rs.next()) {
                        int rowPos = this.rs.getInt(1);

                        if (!this.rs.getString(3).equals("New Data" + (100 - rowPos))) {
                              dataGood = false;
                        }
                  }

                  assertTrue("Updates failed", dataGood);

                  // move back, and change the primary key
                  // This should work
                  int newPrimaryKeyId = 99999;
                  this.rs.absolute(1);
                  this.rs.updateInt(1, newPrimaryKeyId);
                  this.rs.updateRow();

                  int savedPrimaryKeyId = this.rs.getInt(1);
                  assertTrue("Updated primary key does not match",
                              (newPrimaryKeyId == savedPrimaryKeyId));

                  // Check cancelRowUpdates()
                  this.rs.absolute(1);

                  int primaryKey = this.rs.getInt(1);
                  int originalValue = this.rs.getInt(2);
                  this.rs.updateInt(2, -3);
                  this.rs.cancelRowUpdates();

                  int newValue = this.rs.getInt(2);
                  assertTrue("ResultSet.cancelRowUpdates() failed",
                              newValue == originalValue);

                  // Now check refreshRow()
                  // Check cancelRowUpdates()
                  this.rs.absolute(1);
                  primaryKey = this.rs.getInt(1);
                  this.stmt
                              .executeUpdate("UPDATE UPDATABLE SET char_field='foo' WHERE pos1="
                                          + primaryKey);
                  this.rs.refreshRow();
                  assertTrue("ResultSet.refreshRow failed", this.rs.getString(
                              "char_field").equals("foo"));

                  // Now check deleteRow()
                  this.rs.last();

                  int oldLastRow = this.rs.getRow();
                  this.rs.deleteRow();
                  this.rs.last();
                  assertTrue("ResultSet.deleteRow() failed",
                              this.rs.getRow() == (oldLastRow - 1));
                  this.rs.close();

                  /*
                   * FIXME: Move to regression
                   * 
                   * scrollableStmt.executeUpdate("DROP TABLE IF EXISTS test");
                   * scrollableStmt.executeUpdate("CREATE TABLE test (ident INTEGER
                   * PRIMARY KEY, name TINYTEXT, expiry DATETIME default null)");
                   * scrollableStmt.executeUpdate("INSERT INTO test SET ident=1,
                   * name='original'");
                   * 
                   * //Select to get a resultset to work on ResultSet this.rs =
                   * this.stmt.executeQuery("SELECT ident, name, expiry FROM test");
                   * 
                   * //Check that the expiry field was null before we did our update
                   * this.rs.first();
                   * 
                   * java.sql.Date before = this.rs.getDate("expiry");
                   * 
                   * if (this.rs.wasNull()) { System.out.println("Expiry was correctly
                   * SQL null before update"); }
                   * 
                   * //Update a different field this.rs.updateString("name",
                   * "Updated"); this.rs.updateRow();
                   * 
                   * //Test to see if field has been altered java.sql.Date after =
                   * this.rs.getDate(3);
                   * 
                   * if (this.rs.wasNull()) System.out.println("Bug disproved - expiry
                   * SQL null after update"); else System.out.println("Bug proved -
                   * expiry corrupted to '" + after + "'");
                   */
            } finally {
                  if (scrollableStmt != null) {
                        try {
                              scrollableStmt.close();
                        } catch (SQLException sqlEx) {
                              ;
                        }
                  }
            }
      }

      private void createTestTable() throws SQLException {
            //
            // Catch the error, the table might exist
            //
            try {
                  this.stmt.executeUpdate("DROP TABLE UPDATABLE");
            } catch (SQLException SQLE) {
                  ;
            }

            this.stmt
                        .executeUpdate("CREATE TABLE UPDATABLE (pos1 int not null, pos2 int not null, char_field VARCHAR(32), PRIMARY KEY (pos1, pos2))");

            for (int i = 0; i < 100; i++) {
                  this.stmt.executeUpdate("INSERT INTO UPDATABLE VALUES (" + i + ", "
                              + i + ",'StringData" + i + "')");
            }
      }
}

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