org.apache.cassandra.cql3.statements

Class UseStatement

java.lang.Object

org.apache.cassandra.cql3.statements.ParsedStatement

org.apache.cassandra.cql3.statements.UseStatement

All Implemented Interfaces:

CQLStatement

public class UseStatement
extends ParsedStatement
implements CQLStatement

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.cassandra.cql3.statements.ParsedStatement

ParsedStatement.Prepared

Constructor Summary

Constructors

Constructor and Description
UseStatement(java.lang.String keyspace)

Method Summary

Methods

Modifier and Type	Method and Description
void	checkAccess(ClientState state) Perform any access verification necessary for the statement.
ResultMessage	execute(ConsistencyLevel cl, QueryState state, java.util.List<java.nio.ByteBuffer> variables, int pageSize, PagingState pagingState) Execute the statement and return the resulting result or null if there is no result.
ResultMessage	executeInternal(QueryState state) Variante of execute used for internal query against the system tables, and thus only query the local node.
ParsedStatement.Prepared	prepare()
void	validate(ClientState state) Perform additional validation required by the statment.

Methods inherited from class org.apache.cassandra.cql3.statements.ParsedStatement

getBoundsTerms, setBoundTerms

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.cassandra.cql3.CQLStatement

getBoundsTerms

Constructor Detail

UseStatement

public UseStatement(java.lang.String keyspace)

Method Detail

prepare

public ParsedStatement.Prepared prepare()
                                 throws InvalidRequestException

Specified by:

prepare in class ParsedStatement

Throws:

InvalidRequestException

checkAccess

public void checkAccess(ClientState state)
                 throws UnauthorizedException

Description copied from interface: CQLStatement

Perform any access verification necessary for the statement.

Specified by:

checkAccess in interface CQLStatement

Parameters:

state - the current client state

Throws:

UnauthorizedException

validate

public void validate(ClientState state)
              throws InvalidRequestException

Description copied from interface: CQLStatement

Perform additional validation required by the statment. To be overriden by subclasses if needed.

Specified by:

validate in interface CQLStatement

Parameters:

state - the current client state

Throws:

InvalidRequestException

execute

public ResultMessage execute(ConsistencyLevel cl,
                    QueryState state,
                    java.util.List<java.nio.ByteBuffer> variables,
                    int pageSize,
                    PagingState pagingState)
                      throws InvalidRequestException

Description copied from interface: CQLStatement

Execute the statement and return the resulting result or null if there is no result.

Specified by:

execute in interface CQLStatement

Parameters:

cl - the consistency level for the query

state - the current query state

variables - the values for bounded variables. The implementation can assume that each bound term have a corresponding value.

pageSize - the initial page size for the result set potentially returned. A negative value means no paging needs to be done. Statements that do not return result sets can ignore this value.

pagingState - the paging state for paged query. All statement except Select should ignore that value.

Throws:

InvalidRequestException

executeInternal

public ResultMessage executeInternal(QueryState state)

Description copied from interface: CQLStatement

Variante of execute used for internal query against the system tables, and thus only query the local node.

Specified by:

executeInternal in interface CQLStatement

Parameters:

state - the current query state