java.sql.Driver#getPropertyInfo ( )源码实例Demo

@Test
public void driverPropertyInfoWithoutValues() throws SQLException {
  Driver driver = getDriver();
  DriverPropertyInfo[] properties =
      driver.getPropertyInfo("jdbc:cloudspanner://localhost", null);
  assertEquals(ConnectionProperties.NUMBER_OF_PROPERTIES, properties.length);
  for (DriverPropertyInfo property : properties) {
    if (property.name.equals("AllowExtendedMode") || property.name.equals("AsyncDdlOperations")
        || property.name.equals("AutoBatchDdlOperations")
        || property.name.equals("BatchReadOnlyMode") || property.name.equals("UseCustomHost"))
      assertEquals("false", property.value);
    else if (property.name.equals("ReportDefaultSchemaAsNull"))
      assertEquals("true", property.value);
    else
      assertNull(property.value);
  }
}
 

@Test
public void driverPropertyInfoWithURLValues() throws SQLException {
  Driver driver = getDriver();
  DriverPropertyInfo[] properties = driver.getPropertyInfo(
      "jdbc:cloudspanner://localhost;Project=adroit-hall-xxx;Instance=test-instance;Database=testdb;PvtKeyPath=C:\\Users\\MyUserName\\Documents\\CloudSpannerKeys\\cloudspanner3.json;SimulateProductName=PostgreSQL",
      null);
  assertEquals(ConnectionProperties.NUMBER_OF_PROPERTIES, properties.length);
  assertEquals("adroit-hall-xxx", properties[0].value);
  assertEquals("test-instance", properties[1].value);
  assertEquals("testdb", properties[2].value);
  assertEquals("C:\\Users\\MyUserName\\Documents\\CloudSpannerKeys\\cloudspanner3.json",
      properties[3].value);
  assertNull(properties[4].value);
  assertEquals("PostgreSQL", properties[5].value);
}
 

@Override public DriverPropertyInfo[] getPropertyInfo( String url, Properties info ) throws SQLException {
  Driver driverDelegate = this.delegate;
  if ( driverDelegate == null ) {
    return null;
  }
  return driverDelegate.getPropertyInfo( url, info );
}
 

protected static String getProperty(String property, String connectionString, Driver dbDriver){
  String ret = null;
  if(property != null && !property.isEmpty() && dbDriver != null && connectionString != null && !connectionString.isEmpty()){
    try {
      for (DriverPropertyInfo dpi : dbDriver.getPropertyInfo(connectionString, new Properties())) {
        if(property.equalsIgnoreCase(dpi.name.trim())){
          ret = dpi.value;
          break;
        }
      }
    } catch (SQLException e) {}
  }
  return ret;
}
 

/**
 * DERBY-1296 - Setting property db.system.bootAll causes an Exception
 *
 * Check that setting the system property "derby.system.bootAll" will not
 * cause an exception when used in combination with the system property
 * "derby.system.home".
 *
 * The property "derby.system.home" is set by default for all tests and does
 * not need to be explicitly set in this test.
 */
public void testSettingBootAllPropertyWithHomePropertySet() 
        throws Exception 
{
    JDBCClient embedded = getTestConfiguration().getJDBCClient();

    String driverName = embedded.getJDBCDriverName();
    String url = embedded.getUrlBase();
    
    // Ensure the engine is not booted.
    try {
        DriverManager.getDriver(url);
        fail("Derby is booted!");
    } catch (SQLException e) {
   }

    Class.forName(driverName).newInstance();

    Driver driver = DriverManager.getDriver(url);

    DriverPropertyInfo[] attributes = driver.getPropertyInfo(url, null);
    
    String returnedDatabases[] = null;
    for (int i = 0; i < attributes.length; i++) {
        if (attributes[i].name.equalsIgnoreCase("databaseName")) {
            returnedDatabases = attributes[i].choices;
        }
    }
    
    // We expect at least four databases to be booted,
    // but it could be more if other tests have left databases
    // around.
    // DERBY-2069 the single use databases are not
    // booted automatically, once DERBY-2069 is fixed
    // the length can be compared to four.
    assertNotNull(returnedDatabases);
    assertTrue("Fewer databases booted than expected",
            returnedDatabases.length >= 1);
}
 

/**
 * DERBY-1296 - Setting property gemfirexd.system.bootAll causes an Exception
 *
 * Check that setting the system property "gemfirexd.system.bootAll" will not 
 * cause an exception when used in combination with the system property
 * "gemfirexd.system.home".
 *
 * The property "gemfirexd.system.home" is set by default for all tests and does
 * not need to be explicitly set in this test.
 */
public void testSettingBootAllPropertyWithHomePropertySet() 
        throws Exception 
{
    JDBCClient embedded = getTestConfiguration().getJDBCClient();

    String driverName = embedded.getJDBCDriverName();
    String url = embedded.getUrlBase();
    
    // Ensure the engine is not booted.
    try {
        DriverManager.getDriver(url);
        fail("Derby is booted!");
    } catch (SQLException e) {
   }

    Class.forName(driverName).newInstance();

    Driver driver = DriverManager.getDriver(url);

    DriverPropertyInfo[] attributes = driver.getPropertyInfo(url, null);
    
    String returnedDatabases[] = null;
    for (int i = 0; i < attributes.length; i++) {
        if (attributes[i].name.equalsIgnoreCase("databaseName")) {
            returnedDatabases = attributes[i].choices;
        }
    }
    
    // We expect at least four databases to be booted,
    // but it could be more if other tests have left databases
    // around.
    // DERBY-2069 the single use databases are not
    // booted automatically, once DERBY-2069 is fixed
    // the length can be compared to four.
    assertNotNull(returnedDatabases);
    // GemStone changes BEGIN
    // in gemfirexd, there are no databaseNames
    /*
     assertTrue("Fewer databases booted than expected",
             returnedDatabases.length >= 1);
     */
    assertEquals("Did not expect any databaseName",
                 0,
                 returnedDatabases.length);
    // GemStone changes END
}
 

@Test
public void testGetPropertyInfo() throws SQLException
{
  // Test with blank URL and no properties. ServerURL is needed.
  String url = "";
  Properties props = new Properties();
  Driver driver = DriverManager.getDriver("jdbc:snowflake://snowflake.reg.local:8082");
  DriverPropertyInfo[] info = driver.getPropertyInfo(url, props);
  assertEquals(1, info.length);
  assertEquals("serverURL", info[0].name);
  assertEquals("server URL in form of <protocol>://<host or domain>:<port number>/<path of resource>",
               info[0].description);

  // Test with URL that requires username and password.
  url = "jdbc:snowflake://snowflake.reg.local:8082";
  info = driver.getPropertyInfo(url, props);
  assertEquals(2, info.length);
  assertEquals("user", info[0].name);
  assertEquals("username for account",
               info[0].description);
  assertEquals("password", info[1].name);
  assertEquals("password for account", info[1].description);

  // Add username and try again; get password requirement back
  props.put("user", "snowman");
  props.put("password", "test");
  info = driver.getPropertyInfo(url, props);
  assertEquals(0, info.length);

  props.put("useProxy", "true");
  info = driver.getPropertyInfo(url, props);
  assertEquals(2, info.length);
  assertEquals("proxyHost", info[0].name);
  assertEquals("proxy host name", info[0].description);
  assertEquals("proxyPort", info[1].name);
  assertEquals("proxy port; should be an integer", info[1].description);

  props.put("proxyHost", "dummyHost");
  props.put("proxyPort", "dummyPort");
  info = driver.getPropertyInfo(url, props);
  assertEquals(0, info.length);

  // invalid URL still throws SQLException
  try
  {
    url = "snowflake.reg.local:8082";
    driver.getPropertyInfo(url, props);
  }
  catch (SQLException e)
  {
    assertEquals((int) ErrorCode.INVALID_CONNECT_STRING.getMessageCode(), e.getErrorCode());
  }
}
 

/**
 * DERBY-1296 - Setting property gemfirexd.system.bootAll causes an Exception
 *
 * Check that setting the system property "gemfirexd.system.bootAll" will not 
 * cause an exception when used in combination with the system property
 * "gemfirexd.system.home".
 *
 * The property "gemfirexd.system.home" is set by default for all tests and does
 * not need to be explicitly set in this test.
 */
public void testSettingBootAllPropertyWithHomePropertySet() 
        throws Exception 
{
    JDBCClient embedded = getTestConfiguration().getJDBCClient();

    String driverName = embedded.getJDBCDriverName();
    String url = embedded.getUrlBase();
    
    // Ensure the engine is not booted.
    try {
        DriverManager.getDriver(url);
        fail("Derby is booted!");
    } catch (SQLException e) {
   }

    Class.forName(driverName).newInstance();

    Driver driver = DriverManager.getDriver(url);

    DriverPropertyInfo[] attributes = driver.getPropertyInfo(url, null);
    
    String returnedDatabases[] = null;
    for (int i = 0; i < attributes.length; i++) {
        if (attributes[i].name.equalsIgnoreCase("databaseName")) {
            returnedDatabases = attributes[i].choices;
        }
    }
    
    // We expect at least four databases to be booted,
    // but it could be more if other tests have left databases
    // around.
    // DERBY-2069 the single use databases are not
    // booted automatically, once DERBY-2069 is fixed
    // the length can be compared to four.
    assertNotNull(returnedDatabases);
    // GemStone changes BEGIN
    // in gemfirexd, there are no databaseNames
    /*
     assertTrue("Fewer databases booted than expected",
             returnedDatabases.length >= 1);
     */
    assertEquals("Did not expect any databaseName",
                 0,
                 returnedDatabases.length);
    // GemStone changes END
}