java.sql

Interface ShardingKeyBuilder

public interface ShardingKeyBuilder

A builder created from a DataSource or XADataSource object, used to create a ShardingKey with sub-keys of supported data types. Implementations must support JDBCType.VARCHAR and may also support additional data types.

The following example illustrates the use of ShardingKeyBuilder to create a ShardingKey:

 

     DataSource ds = new MyDataSource();
     ShardingKey shardingKey = ds.createShardingKeyBuilder()
                           .subkey("abc", JDBCType.VARCHAR)
                           .subkey(94002, JDBCType.INTEGER)
                           .build();
 
 

Method Summary

Modifier and Type	Method and Description
ShardingKey	build() Returns an instance of the object defined by this builder.
ShardingKeyBuilder	subkey(Object subkey, SQLType subkeyType) This method will be called to add a subkey into a Sharding Key object being built.

Method Detail

subkey

ShardingKeyBuilder subkey(Object subkey,
                          SQLType subkeyType)

This method will be called to add a subkey into a Sharding Key object being built. The order in which subkey method is called is important as it indicates the order of placement of the subkey within the Sharding Key.

Parameters:

subkey - contains the object that needs to be part of shard sub key

subkeyType - sub-key data type of type java.sql.SQLType

Returns:

this builder object

build

ShardingKey build()
           throws SQLException

Returns an instance of the object defined by this builder.

Returns:

The built object

Throws:

SQLException - If an error occurs building the object