org.apache.cassandra.cql3

Interface CQLStatement

All Known Implementing Classes:

AlterKeyspaceStatement, AlterRoleStatement, AlterTableStatement, AlterTypeStatement, AlterViewStatement, AuthenticationStatement, AuthorizationStatement, BatchStatement, CreateAggregateStatement, CreateFunctionStatement, CreateIndexStatement, CreateKeyspaceStatement, CreateRoleStatement, CreateTableStatement, CreateTriggerStatement, CreateTypeStatement, CreateViewStatement, DeleteStatement, DropAggregateStatement, DropFunctionStatement, DropIndexStatement, DropKeyspaceStatement, DropRoleStatement, DropTableStatement, DropTriggerStatement, DropTypeStatement, DropViewStatement, GrantPermissionsStatement, GrantRoleStatement, ListPermissionsStatement, ListRolesStatement, ListUsersStatement, ModificationStatement, PermissionsManagementStatement, RevokePermissionsStatement, RevokeRoleStatement, RoleManagementStatement, SchemaAlteringStatement, SelectStatement, TruncateStatement, UpdateStatement, UseStatement

public interface CQLStatement

Method Summary

Modifier and Type	Method and Description
void	checkAccess(ClientState state) Perform any access verification necessary for the statement.
ResultMessage	execute(QueryState state, QueryOptions options) Execute the statement and return the resulting result or null if there is no result.
ResultMessage	executeInternal(QueryState state, QueryOptions options) Variant of execute used for internal query against the system tables, and thus only query the local node.
int	getBoundTerms() Returns the number of bound terms in this statement.
java.lang.Iterable<Function>	getFunctions() Return an Iterable over all of the functions (both native and user-defined) used by any component of the statement
void	validate(ClientState state) Perform additional validation required by the statment.

Method Detail

getBoundTerms

int getBoundTerms()

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(QueryState state,
                      QueryOptions options)
               throws RequestValidationException,
                      RequestExecutionException

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

Parameters:

state - the current query state

options - options for this query (consistency, variables, pageSize, ...)

Throws:

RequestValidationException

RequestExecutionException

executeInternal

ResultMessage executeInternal(QueryState state,
                              QueryOptions options)
                       throws RequestValidationException,
                              RequestExecutionException

Variant 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

getFunctions

java.lang.Iterable<Function> getFunctions()

Return an Iterable over all of the functions (both native and user-defined) used by any component of the statement

Returns:

functions all functions found (may contain duplicates)