How to use

TableGenerator

in

org.hibernate.id.enhanced

    dialect
);
table.addInitCommand( generateInsertInitCommand() );
this.selectQuery = buildSelectQuery( dialect );
this.updateQuery = buildUpdateQuery();
this.insertQuery = buildInsertQuery();

@Override
public void configure(Type type, Properties params, Dialect dialect) throws MappingException {
  if (params.get("table_name") == null) {
    params.put("table_name", "SEQUENCE_GENERATOR");
  }
  if (params.get("segment_column_name") == null) {
    params.put("segment_column_name", DEFAULT_SEGMENT_COLUMN_NAME);
  }
  if (params.get("value_column_name") == null) {
    params.put("value_column_name", DEFAULT_VALUE_COLUMN_NAME);
  }
  if (params.get("increment_size") == null) {
    params.put("increment_size", DEFAULT_INCREMENT_SIZE);
  }
  super.configure(type, params, dialect);
  entityName = (String) params.get(ENTITY_NAME_PARAM);
}

/**
 * Determine the segment value corresponding to this generator instance.
 * <p/>
 * Called during {@link #configure configuration}.
 *
 * @see #getSegmentValue()
 * @param params The params supplied in the generator config (plus some standard useful extras).
 * @return The name of the value column
 */
@SuppressWarnings("WeakerAccess")
protected String determineSegmentValue(Properties params) {
  String segmentValue = params.getProperty( SEGMENT_VALUE_PARAM );
  if ( StringHelper.isEmpty( segmentValue ) ) {
    segmentValue = determineDefaultSegmentValue( params );
  }
  return segmentValue;
}

@Override
public void configure(Type type, Properties params, ServiceRegistry serviceRegistry) throws MappingException {
  storeLastUsedValue = serviceRegistry.getService( ConfigurationService.class )
      .getSetting( AvailableSettings.TABLE_GENERATOR_STORE_LAST_USED, StandardConverters.BOOLEAN, true );
  identifierType = type;
  final JdbcEnvironment jdbcEnvironment = serviceRegistry.getService( JdbcEnvironment.class );
  qualifiedTableName = determineGeneratorTableName( params, jdbcEnvironment, serviceRegistry );
  segmentColumnName = determineSegmentColumnName( params, jdbcEnvironment );
  valueColumnName = determineValueColumnName( params, jdbcEnvironment );
  segmentValue = determineSegmentValue( params );
  segmentValueLength = determineSegmentColumnSize( params );
  initialValue = determineInitialValue( params );
  incrementSize = determineIncrementSize( params );
  final String optimizationStrategy = ConfigurationHelper.getString(
      OPT_PARAM,
      params,
      OptimizerFactory.determineImplicitOptimizerName( incrementSize, params )
  );
  int optimizerInitialValue = ConfigurationHelper.getInt( INITIAL_PARAM, params, -1 );
  optimizer = OptimizerFactory.buildOptimizer(
      optimizationStrategy,
      identifierType.getReturnedClass(),
      incrementSize,
      optimizerInitialValue
  );
}

@Override
public void configure(Type type, Properties params, Dialect dialect) throws MappingException {
  identifierType = type;
  tableName = determineGeneratorTableName( params, dialect );
  segmentColumnName = determineSegmentColumnName( params, dialect );
  valueColumnName = determineValueColumnName( params, dialect );
  segmentValue = determineSegmentValue( params );
  segmentValueLength = determineSegmentColumnSize( params );
  initialValue = determineInitialValue( params );
  incrementSize = determineIncrementSize( params );
  this.selectQuery = buildSelectQuery( dialect );
  this.updateQuery = buildUpdateQuery();
  this.insertQuery = buildInsertQuery();
  // if the increment size is greater than one, we prefer pooled optimization; but we
  // need to see if the user prefers POOL or POOL_LO...
  String defaultPooledOptimizerStrategy = ConfigurationHelper.getBoolean( Environment.PREFER_POOLED_VALUES_LO, params, false )
      ? OptimizerFactory.StandardOptimizerDescriptor.POOLED_LO.getExternalName()
      : OptimizerFactory.StandardOptimizerDescriptor.POOLED.getExternalName();
  final String defaultOptimizerStrategy = incrementSize <= 1
      ? OptimizerFactory.StandardOptimizerDescriptor.NONE.getExternalName()
      : defaultPooledOptimizerStrategy;
  final String optimizationStrategy = ConfigurationHelper.getString( OPT_PARAM, params, defaultOptimizerStrategy );
  optimizer = OptimizerFactory.buildOptimizer(
      optimizationStrategy,
      identifierType.getReturnedClass(),
      incrementSize,
      ConfigurationHelper.getInt( INITIAL_PARAM, params, -1 )
  );
}

@Test
@TestForIssue( jiraKey = "HHH-9850" )
public void testNewGeneratorTableCreationOnDb2() {
  StandardServiceRegistry ssr = new StandardServiceRegistryBuilder()
      .applySetting( AvailableSettings.DIALECT, DB2Dialect.class.getName() )
      .build();
  try {
    Metadata metadata = new MetadataSources( ssr )
        .buildMetadata();
    assertEquals( 0, metadata.getDatabase().getDefaultNamespace().getTables().size() );
    TableGenerator generator = new TableGenerator();
    Properties properties = new Properties();
    generator.configure( IntegerType.INSTANCE, properties, ssr );
    generator.registerExportables( metadata.getDatabase() );
    assertEquals( 1, metadata.getDatabase().getDefaultNamespace().getTables().size() );
    final Table table = metadata.getDatabase().getDefaultNamespace().getTables().iterator().next();
    final String[] createCommands = new DB2Dialect().getTableExporter().getSqlCreateStrings( table, metadata );
    assertContains( "sequence_name varchar(255) not null", createCommands[0] );
  }
  finally {
    StandardServiceRegistryBuilder.destroy( ssr );
  }
}

if(instanceSeqId == null) {
  logger.warn("没有找到对应的实例，采用缺省的的主键生成方式");
  id = "" + super.generate(session, obj);
    tableGenerator = new TableGenerator();
    tableGenerator.configure(new IntegerType(), defaultParams, defaultDialet);
    multiTenantTableGenerator.put(instanceSeqId, tableGenerator);
    logger.info("创建{}的主键生成器。", instanceSeqId);
  id = "" + tableGenerator.generate(session, obj);

@Override
public void configure(Type type, Properties params, Dialect dialect) throws MappingException {
  identifierType = type;
  tableName = determineGeneratorTableName( params, dialect );
  segmentColumnName = determineSegmentColumnName( params, dialect );
  valueColumnName = determineValueColumnName( params, dialect );
  segmentValue = determineSegmentValue( params );
  segmentValueLength = determineSegmentColumnSize( params );
  initialValue = determineInitialValue( params );
  incrementSize = determineIncrementSize( params );
  this.selectQuery = buildSelectQuery( dialect );
  this.updateQuery = buildUpdateQuery();
  this.insertQuery = buildInsertQuery();
  // if the increment size is greater than one, we prefer pooled optimization; but we
  // need to see if the user prefers POOL or POOL_LO...
  String defaultPooledOptimizerStrategy = ConfigurationHelper.getBoolean( Environment.PREFER_POOLED_VALUES_LO, params, false )
      ? OptimizerFactory.StandardOptimizerDescriptor.POOLED_LO.getExternalName()
      : OptimizerFactory.StandardOptimizerDescriptor.POOLED.getExternalName();
  final String defaultOptimizerStrategy = incrementSize <= 1
      ? OptimizerFactory.StandardOptimizerDescriptor.NONE.getExternalName()
      : defaultPooledOptimizerStrategy;
  final String optimizationStrategy = ConfigurationHelper.getString( OPT_PARAM, params, defaultOptimizerStrategy );
  optimizer = OptimizerFactory.buildOptimizer(
      optimizationStrategy,
      identifierType.getReturnedClass(),
      incrementSize,
      ConfigurationHelper.getInt( INITIAL_PARAM, params, -1 )
  );
}

@Override
public void configure(JavaTypeDescriptor javaTypeDescriptor, Properties params, ServiceRegistry serviceRegistry) throws MappingException {
  storeLastUsedValue = serviceRegistry.getService( ConfigurationService.class )
      .getSetting( AvailableSettings.TABLE_GENERATOR_STORE_LAST_USED, StandardConverters.BOOLEAN, true );
  identifierType = javaTypeDescriptor;
  final JdbcEnvironment jdbcEnvironment = serviceRegistry.getService( JdbcEnvironment.class );
  qualifiedTableName = determineGeneratorTableName( params, jdbcEnvironment, serviceRegistry );
  segmentColumnName = determineSegmentColumnName( params, jdbcEnvironment );
  valueColumnName = determineValueColumnName( params, jdbcEnvironment );
  segmentValue = determineSegmentValue( params );
  segmentValueLength = determineSegmentColumnSize( params );
  initialValue = determineInitialValue( params );
  incrementSize = determineIncrementSize( params );
  final String optimizationStrategy = ConfigurationHelper.getString(
      OPT_PARAM,
      params,
      OptimizerFactory.determineImplicitOptimizerName( incrementSize, params )
  );
  int optimizerInitialValue = ConfigurationHelper.getInt( INITIAL_PARAM, params, -1 );
  optimizer = OptimizerFactory.buildOptimizer(
      optimizationStrategy,
      identifierType.getJavaType(),
      incrementSize,
      optimizerInitialValue
  );
}

    dialect
);
table.addInitCommand( generateInsertInitCommand() );
this.selectQuery = buildSelectQuery( dialect );
this.updateQuery = buildUpdateQuery();
this.insertQuery = buildInsertQuery();

/**
 * Determine the segment value corresponding to this generator instance.
 * <p/>
 * Called during {@link #configure configuration}.
 *
 * @see #getSegmentValue()
 * @param params The params supplied in the generator config (plus some standard useful extras).
 * @return The name of the value column
 */
@SuppressWarnings("WeakerAccess")
protected String determineSegmentValue(Properties params) {
  String segmentValue = params.getProperty( SEGMENT_VALUE_PARAM );
  if ( StringHelper.isEmpty( segmentValue ) ) {
    segmentValue = determineDefaultSegmentValue( params );
  }
  return segmentValue;
}

@Override
public void configure(Type type, Properties params, Dialect dialect)
    throws MappingException {
  super.configure(type, params, dialect);
}

/**
 * Determine the segment value corresponding to this generator instance.
 * <p/>
 * Called during {@link #configure configuration}.
 *
 * @see #getSegmentValue()
 * @param params The params supplied in the generator config (plus some standard useful extras).
 * @return The name of the value column
 */
protected String determineSegmentValue(Properties params) {
  String segmentValue = params.getProperty( SEGMENT_VALUE_PARAM );
  if ( StringHelper.isEmpty( segmentValue ) ) {
    segmentValue = determineDefaultSegmentValue( params );
  }
  return segmentValue;
}

  @Override
  public void configure(Type type, Properties params, Dialect dialect)
      throws MappingException {
    // 如果这里写成super.configure(type, params, dialect);会造成死循环
    // 因为TableGenerator默认Integer类型主键
    this.defaultParams = params;
    this.defaultDialet = dialect;
    super.configure(new IntegerType(), params, dialect);
//        format = params.getProperty("format");
  }
 

/**
 * Determine the segment value corresponding to this generator instance.
 * <p/>
 * Called during {@link #configure configuration}.
 *
 * @see #getSegmentValue()
 * @param params The params supplied in the generator config (plus some standard useful extras).
 * @return The name of the value column
 */
protected String determineSegmentValue(Properties params) {
  String segmentValue = params.getProperty( SEGMENT_VALUE_PARAM );
  if ( StringHelper.isEmpty( segmentValue ) ) {
    segmentValue = determineDefaultSegmentValue( params );
  }
  return segmentValue;
}