org.apache.cassandra.cql3

Interface CQLStatement

All Known Implementing Classes:

AlterKeyspaceStatement, AlterTableStatement, AlterUserStatement, AuthenticationStatement, AuthorizationStatement, BatchStatement, CreateColumnFamilyStatement, CreateIndexStatement, CreateKeyspaceStatement, CreateTriggerStatement, CreateUserStatement, DeleteStatement, DropColumnFamilyStatement, DropIndexStatement, DropKeyspaceStatement, DropTriggerStatement, DropUserStatement, GrantStatement, ListPermissionsStatement, ListUsersStatement, ModificationStatement, PermissionAlteringStatement, RevokeStatement, SchemaAlteringStatement, SelectStatement, TruncateStatement, UpdateStatement, UseStatement

public interface CQLStatement

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 pageState) 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.
int	getBoundsTerms() Returns the number of bound terms in this statement.
void	validate(ClientState state) Perform additional validation required by the statment.

Method Detail

getBoundsTerms

int getBoundsTerms()

Returns the number of bound terms in this statement.

checkAccess

void checkAccess(ClientState state)
                 throws UnauthorizedException,
                        InvalidRequestException

Perform any access verification necessary for the statement.

Parameters:

state - the current client state

Throws:

UnauthorizedException

InvalidRequestException

validate

void validate(ClientState state)
              throws RequestValidationException

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

Parameters:

state - the current client state

Throws:

RequestValidationException

execute

ResultMessage execute(ConsistencyLevel cl,
                    QueryState state,
                    java.util.List<java.nio.ByteBuffer> variables,
                    int pageSize,
                    PagingState pageState)
                      throws RequestValidationException,
                             RequestExecutionException

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

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.

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

Throws:

RequestValidationException

RequestExecutionException

executeInternal

ResultMessage executeInternal(QueryState state)
                              throws RequestValidationException,
                                     RequestExecutionException

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

Parameters:

state - the current query state

Throws:

RequestValidationException

RequestExecutionException