org.hibernate.boot.model.relational.Namespace#locateTable ( )源码实例Demo

@Override
public Table addTable(
		String schemaName,
		String catalogName,
		String name,
		String subselectFragment,
		boolean isAbstract) {
	final Namespace namespace = getDatabase().locateNamespace(
			getDatabase().toIdentifier( catalogName ),
			getDatabase().toIdentifier( schemaName )
	);

	// annotation binding depends on the "table name" for @Subselect bindings
	// being set into the generated table (mainly to avoid later NPE), but for now we need to keep that :(
	final Identifier logicalName;
	if ( name != null ) {
		logicalName = getDatabase().toIdentifier( name );
	}
	else {
		logicalName = null;
	}

	if ( subselectFragment != null ) {
		return new Table( namespace, logicalName, subselectFragment, isAbstract );
	}
	else {
		Table table = namespace.locateTable( logicalName );
		if ( table != null ) {
			if ( !isAbstract ) {
				table.setAbstract( false );
			}
			return table;
		}
		return namespace.createTable( logicalName, isAbstract );
	}
}
 

@Override
public Table addDenormalizedTable(
		String schemaName,
		String catalogName,
		String name,
		boolean isAbstract,
		String subselectFragment,
		Table includedTable) throws DuplicateMappingException {
	final Namespace namespace = getDatabase().locateNamespace(
			getDatabase().toIdentifier( catalogName ),
			getDatabase().toIdentifier( schemaName )
	);

	// annotation binding depends on the "table name" for @Subselect bindings
	// being set into the generated table (mainly to avoid later NPE), but for now we need to keep that :(
	final Identifier logicalName;
	if ( name != null ) {
		logicalName = getDatabase().toIdentifier( name );
	}
	else {
		logicalName = null;
	}

	if ( subselectFragment != null ) {
		return new DenormalizedTable( namespace, logicalName, subselectFragment, isAbstract, includedTable );
	}
	else {
		Table table = namespace.locateTable( logicalName );
		if ( table != null ) {
			throw new DuplicateMappingException( DuplicateMappingException.Type.TABLE, logicalName.toString() );
		}
		else {
			table = namespace.createDenormalizedTable( logicalName, isAbstract, includedTable );
		}
		return table;
	}
}
 

@Override
public void registerExportables(Database database) {
	final Dialect dialect = database.getJdbcEnvironment().getDialect();

	final Namespace namespace = database.locateNamespace(
			qualifiedTableName.getCatalogName(),
			qualifiedTableName.getSchemaName()
	);

	Table table = namespace.locateTable( qualifiedTableName.getObjectName() );
	if ( table == null ) {
		table = namespace.createTable( qualifiedTableName.getObjectName(), false );

		// todo : note sure the best solution here.  do we add the columns if missing?  other?
		final Column segmentColumn = new ExportableColumn(
				database,
				table,
				segmentColumnName,
				StringType.INSTANCE,
				dialect.getTypeName( Types.VARCHAR, segmentValueLength, 0, 0 )
		);
		segmentColumn.setNullable( false );
		table.addColumn( segmentColumn );

		// lol
		table.setPrimaryKey( new PrimaryKey( table ) );
		table.getPrimaryKey().addColumn( segmentColumn );

		final Column valueColumn = new ExportableColumn(
				database,
				table,
				valueColumnName,
				LongType.INSTANCE
		);
		table.addColumn( valueColumn );
	}

	// allow physical naming strategies a chance to kick in
	this.renderedTableName = database.getJdbcEnvironment().getQualifiedObjectNameFormatter().format(
			table.getQualifiedTableName(),
			dialect
	);
	table.addInitCommand( generateInsertInitCommand() );

	this.selectQuery = buildSelectQuery( dialect );
	this.updateQuery = buildUpdateQuery();
	this.insertQuery = buildInsertQuery();
}
 

@Override
public void registerExportables(Database database) {
	final JdbcEnvironment jdbcEnvironment = database.getJdbcEnvironment();
	final Dialect dialect = jdbcEnvironment.getDialect();

	final Namespace namespace = database.locateNamespace(
			logicalQualifiedTableName.getCatalogName(),
			logicalQualifiedTableName.getSchemaName()
	);

	Table table = namespace.locateTable( logicalQualifiedTableName.getObjectName() );
	if ( table == null ) {
		table = namespace.createTable( logicalQualifiedTableName.getObjectName(), false );
	}

	this.tableNameText = jdbcEnvironment.getQualifiedObjectNameFormatter().format(
			table.getQualifiedTableName(),
			dialect
	);

	this.valueColumnNameText = logicalValueColumnNameIdentifier.render( dialect );


	this.selectQuery = "select " + valueColumnNameText + " as id_val" +
			" from " + dialect.appendLockHint( LockMode.PESSIMISTIC_WRITE, tableNameText ) +
			dialect.getForUpdateString();

	this.updateQuery = "update " + tableNameText +
			" set " + valueColumnNameText + "= ?" +
			" where " + valueColumnNameText + "=?";

	ExportableColumn valueColumn = new ExportableColumn(
			database,
			table,
			valueColumnNameText,
			LongType.INSTANCE
	);
	table.addColumn( valueColumn );

	table.addInitCommand(
			new InitCommand( "insert into " + tableNameText + " values ( " + initialValue + " )" )
	);
}
 

@Override
public void registerExportables(Database database) {
	final Namespace namespace = database.locateNamespace(
			qualifiedTableName.getCatalogName(),
			qualifiedTableName.getSchemaName()
	);

	Table table = namespace.locateTable( qualifiedTableName.getObjectName() );
	if ( table == null ) {
		table = namespace.createTable( qualifiedTableName.getObjectName(), false );

		// todo : note sure the best solution here.  do we add the columns if missing?  other?
		table.setPrimaryKey( new PrimaryKey( table ) );

		final Column pkColumn = new ExportableColumn(
				database,
				table,
				segmentColumnName,
				StringType.INSTANCE,
				database.getDialect().getTypeName( Types.VARCHAR, keySize, 0, 0 )
		);
		pkColumn.setNullable( false );
		table.addColumn( pkColumn );
		table.getPrimaryKey().addColumn( pkColumn );

		final Column valueColumn = new ExportableColumn(
				database,
				table,
				valueColumnName,
				LongType.INSTANCE
		);
		table.addColumn( valueColumn );
	}

	final JdbcEnvironment jdbcEnvironment = database.getJdbcEnvironment();

	// allow physical naming strategies a chance to kick in
	tableName = jdbcEnvironment.getQualifiedObjectNameFormatter().format(
			table.getQualifiedTableName(),
			jdbcEnvironment.getDialect()
	);

	query = "select " +
			valueColumnName +
			" from " +
			jdbcEnvironment.getDialect().appendLockHint( LockMode.PESSIMISTIC_WRITE, tableName ) +
			" where " + segmentColumnName + " = '" + segmentName + "'" +
			jdbcEnvironment.getDialect().getForUpdateString();

	update = "update " +
			tableName +
			" set " +
			valueColumnName +
			" = ? where " +
			valueColumnName +
			" = ? and " +
			segmentColumnName +
			" = '" +
			segmentName
			+ "'";

	insert = "insert into " + tableName +
			"(" + segmentColumnName + ", " + valueColumnName + ") " +
			"values('" + segmentName + "', ?)";



}