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IShardMapper<MappingT,ValueT> Interface

Package:

com.microsoft.azure.elasticdb.shard.mapper

Type Parameters

MappingT

ValueT

public interface IShardMapper<MappingT extends IShardProvider,ValueT>

Container for a collection of keys to shards mappings.

Method Summary

Modifier and Type	Method and Description
MappingT	add(MappingT mapping) Adds a mapping.
MappingT	lookup(ValueT key, LookupOptions lookupOptions) Looks up the key value and returns the corresponding mapping.
Connection	openConnectionForKey(ValueT key, String connectionString)
Connection	openConnectionForKey(ValueT key, String connectionString, ConnectionOptions options) Given a key value, obtains a SqlConnection to the shard in the mapping that contains the key value.
Callable<Connection>	openConnectionForKeyAsync(ValueT key, String connectionString)
Callable<Connection>	openConnectionForKeyAsync(ValueT key, String connectionString, ConnectionOptions options) Given a key value, asynchronously obtains a SqlConnection to the shard in the mapping that contains the key value.
void	remove(MappingT mapping, UUID lockOwnerId) Removes a mapping.
boolean	tryLookup(ValueT key, LookupOptions lookupOptions, ReferenceObjectHelper<MappingT> mapping) Tries to looks up the key value and returns the corresponding mapping.

Method Details

add

public MappingT add(MappingT mapping)

Adds a mapping.

Parameters:

mapping - Mapping being added.

lookup

public MappingT lookup(ValueT key, LookupOptions lookupOptions)

Looks up the key value and returns the corresponding mapping.

Parameters:

key - Input key value.

lookupOptions - Whether to use cache and/or storage for lookups.

Returns:

Mapping that contains the key value.

openConnectionForKey

public Connection openConnectionForKey(ValueT key, String connectionString)

Parameters:

key

connectionString

openConnectionForKey

public Connection openConnectionForKey(ValueT key, String connectionString, ConnectionOptions options)

Given a key value, obtains a SqlConnection to the shard in the mapping that contains the key value.

Parameters:

key - Input key value.

connectionString - Connection string with credential information, the DataSource and Database are obtained from the results of the lookup operation for key.

options - Options for validation operations to perform on opened connection.

Returns:

An opened SqlConnection.

openConnectionForKeyAsync

public Callable openConnectionForKeyAsync(ValueT key, String connectionString)

Parameters:

key

connectionString

openConnectionForKeyAsync

public Callable openConnectionForKeyAsync(ValueT key, String connectionString, ConnectionOptions options)

Given a key value, asynchronously obtains a SqlConnection to the shard in the mapping that contains the key value.

Parameters:

key - Input key value.

connectionString - Connection string with credential information, the DataSource and Database are obtained from the results of the lookup operation for key.

options - Options for validation operations to perform on opened connection.

Returns:

An opened SqlConnection.

remove

public void remove(MappingT mapping, UUID lockOwnerId)

Removes a mapping.

Parameters:

mapping - Mapping being removed.

lockOwnerId - Lock owner id of the mapping

tryLookup

public boolean tryLookup(ValueT key, LookupOptions lookupOptions, ReferenceObjectHelper mapping)

Tries to looks up the key value and returns the corresponding mapping.

Parameters:

key - Input key value.

lookupOptions - Whether to use cache and/or storage for lookups.

mapping - Mapping that contains the key value.

Returns:

true if mapping is found, false otherwise.