com.datastax.driver.core

Class KeyspaceMetadata

java.lang.Object

com.datastax.driver.core.KeyspaceMetadata

public class KeyspaceMetadata
extends Object

Describes a keyspace defined in this cluster.

Field Summary

Fields

Modifier and Type	Field and Description
static String	KS_NAME

Method Summary

Modifier and Type	Method and Description
String	asCQLQuery() Returns a CQL query representing this keyspace.
boolean	equals(Object o)
String	exportAsString() Returns a String containing CQL queries representing this keyspace and the user types and tables it contains.
AggregateMetadata	getAggregate(String name, Collection<DataType> argumentTypes) Returns the definition of an aggregate in this keyspace.
AggregateMetadata	getAggregate(String name, DataType... argumentTypes) Returns the definition of an aggregate in this keyspace.
Collection<AggregateMetadata>	getAggregates() Returns the aggregates defined in this keyspace.
FunctionMetadata	getFunction(String name, Collection<DataType> argumentTypes) Returns the definition of a function in this keyspace.
FunctionMetadata	getFunction(String name, DataType... argumentTypes) Returns the definition of a function in this keyspace.
Collection<FunctionMetadata>	getFunctions() Returns the functions defined in this keyspace.
MaterializedViewMetadata	getMaterializedView(String name) Returns the metadata for a materialized view contained in this keyspace.
Collection<MaterializedViewMetadata>	getMaterializedViews() Returns the materialized views defined in this keyspace.
String	getName() Returns the name of this keyspace.
Map<String,String>	getReplication() Returns the replication options for this keyspace.
TableMetadata	getTable(String name) Returns the metadata for a table contained in this keyspace.
Collection<TableMetadata>	getTables() Returns the tables defined in this keyspace.
UserType	getUserType(String name) Returns the definition for a user defined type (UDT) in this keyspace.
Collection<UserType>	getUserTypes() Returns the user types defined in this keyspace.
int	hashCode()
boolean	isDurableWrites() Returns whether durable writes are set on this keyspace.
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

KS_NAME

public static final String KS_NAME

See Also:

Constant Field Values

Method Detail

getName

public String getName()

Returns the name of this keyspace.

Returns:

the name of this CQL keyspace.

isDurableWrites

public boolean isDurableWrites()

Returns whether durable writes are set on this keyspace.

Returns:

true if durable writes are set on this keyspace (the default), false otherwise.

getReplication

public Map<String,String> getReplication()

Returns the replication options for this keyspace.

Returns:

a map containing the replication options for this keyspace.

getTable

public TableMetadata getTable(String name)

Returns the metadata for a table contained in this keyspace.

Parameters:

name - the name of table to retrieve

Returns:

the metadata for table name if it exists in this keyspace, null otherwise.

getTables

public Collection<TableMetadata> getTables()

Returns the tables defined in this keyspace.

Returns:

a collection of the metadata for the tables defined in this keyspace.

getMaterializedView

public MaterializedViewMetadata getMaterializedView(String name)

Returns the metadata for a materialized view contained in this keyspace.

Parameters:

name - the name of materialized view to retrieve

Returns:

the metadata for materialized view name if it exists in this keyspace, null otherwise.

getMaterializedViews

public Collection<MaterializedViewMetadata> getMaterializedViews()

Returns the materialized views defined in this keyspace.

Returns:

a collection of the metadata for the materialized views defined in this keyspace.

getUserType

public UserType getUserType(String name)

Returns the definition for a user defined type (UDT) in this keyspace.

Parameters:

name - the name of UDT definition to retrieve

Returns:

the definition for name if it exists in this keyspace, null otherwise.

getUserTypes

public Collection<UserType> getUserTypes()

Returns the user types defined in this keyspace.

Returns:

a collection of the definition for the user types defined in this keyspace.

getFunction

public FunctionMetadata getFunction(String name,
                                    Collection<DataType> argumentTypes)

Returns the definition of a function in this keyspace.

Parameters:

name - the name of the function.

argumentTypes - the types of the function's arguments.

Returns:

the function definition if it exists in this keyspace, null otherwise.

getFunction

public FunctionMetadata getFunction(String name,
                                    DataType... argumentTypes)

Returns the definition of a function in this keyspace.

Parameters:

name - the name of the function.

argumentTypes - the types of the function's arguments.

Returns:

the function definition if it exists in this keyspace, null otherwise.

getFunctions

public Collection<FunctionMetadata> getFunctions()

Returns the functions defined in this keyspace.

Returns:

a collection of the definition for the functions defined in this keyspace.

getAggregate

public AggregateMetadata getAggregate(String name,
                                      Collection<DataType> argumentTypes)

Returns the definition of an aggregate in this keyspace.

Parameters:

name - the name of the aggregate.

argumentTypes - the types of the aggregate's arguments.

Returns:

the aggregate definition if it exists in this keyspace, null otherwise.

getAggregate

public AggregateMetadata getAggregate(String name,
                                      DataType... argumentTypes)

Returns the definition of an aggregate in this keyspace.

Parameters:

name - the name of the aggregate.

argumentTypes - the types of the aggregate's arguments.

Returns:

the aggregate definition if it exists in this keyspace, null otherwise.

getAggregates

public Collection<AggregateMetadata> getAggregates()

Returns the aggregates defined in this keyspace.

Returns:

a collection of the definition for the aggregates defined in this keyspace.

exportAsString

public String exportAsString()

Returns a String containing CQL queries representing this keyspace and the user types and tables it contains.

In other words, this method returns the queries that would allow to recreate the schema of this keyspace, along with all its user types/tables.

Note that the returned String is formatted to be human readable (for some definition of human readable at least).

Returns:

the CQL queries representing this keyspace schema as a {code String}.

asCQLQuery

public String asCQLQuery()

Returns a CQL query representing this keyspace.

This method returns a single 'CREATE KEYSPACE' query with the options corresponding to this keyspace definition.

Returns:

the 'CREATE KEYSPACE' query corresponding to this keyspace.

See Also:

exportAsString()

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object