org.apache.cassandra.cql3.statements

Class SchemaAlteringStatement

java.lang.Object

org.apache.cassandra.cql3.statements.ParsedStatement

org.apache.cassandra.cql3.statements.CFStatement

org.apache.cassandra.cql3.statements.SchemaAlteringStatement

All Implemented Interfaces:

CQLStatement

Direct Known Subclasses:

AlterKeyspaceStatement, AlterTableStatement, AlterTypeStatement, AlterViewStatement, CreateAggregateStatement, CreateFunctionStatement, CreateIndexStatement, CreateKeyspaceStatement, CreateTableStatement, CreateTriggerStatement, CreateTypeStatement, CreateViewStatement, DropAggregateStatement, DropFunctionStatement, DropIndexStatement, DropKeyspaceStatement, DropTableStatement, DropTriggerStatement, DropTypeStatement, DropViewStatement

public abstract class SchemaAlteringStatement
extends CFStatement
implements CQLStatement

Abstract class for statements that alter the schema.

Nested Class Summary

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

ParsedStatement.Prepared

Field Summary

Fields inherited from class org.apache.cassandra.cql3.statements.CFStatement

cfName

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	SchemaAlteringStatement()
protected	SchemaAlteringStatement(CFName name)

Method Summary

Modifier and Type	Method and Description
protected abstract Event.SchemaChange	announceMigration(QueryState queryState, boolean isLocalOnly) Announces the migration to other nodes in the cluster.
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.
protected void	grantPermissionsToCreator(QueryState state) Schema alteration may result in a new database object (keyspace, table, role, function) being created capable of having permissions GRANTed on it.
ParsedStatement.Prepared	prepare()
void	prepareKeyspace(ClientState state)

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

columnFamily, keyspace, prepareKeyspace

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

getBoundVariables, getFunctions, setBoundVariables, setBoundVariables

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

checkAccess, getFunctions, validate

Constructor Detail

SchemaAlteringStatement

protected SchemaAlteringStatement()

SchemaAlteringStatement

protected SchemaAlteringStatement(CFName name)

Method Detail

getBoundTerms

public int getBoundTerms()

Description copied from interface: CQLStatement

Returns the number of bound terms in this statement.

Specified by:

getBoundTerms in interface CQLStatement

prepareKeyspace

public void prepareKeyspace(ClientState state)
                     throws InvalidRequestException

Overrides:

prepareKeyspace in class CFStatement

Throws:

InvalidRequestException

prepare

public ParsedStatement.Prepared prepare()

Specified by:

prepare in class ParsedStatement

grantPermissionsToCreator

protected void grantPermissionsToCreator(QueryState state)

Schema alteration may result in a new database object (keyspace, table, role, function) being created capable of having permissions GRANTed on it. The creator of the object (the primary role assigned to the AuthenticatedUser performing the operation) is automatically granted ALL applicable permissions on the object. This is a hook for subclasses to override in order to perform that grant when the statement is executed.

announceMigration

protected abstract Event.SchemaChange announceMigration(QueryState queryState,
                                                        boolean isLocalOnly)
                                                 throws RequestValidationException

Announces the migration to other nodes in the cluster.

Returns:

the schema change event corresponding to the execution of this statement, or null if no schema change has occurred (when IF NOT EXISTS is used, for example)

Throws:

RequestValidationException

execute

public ResultMessage execute(QueryState state,
                             QueryOptions options)
                      throws RequestValidationException

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:

state - the current query state

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

Throws:

RequestValidationException

executeInternal

public ResultMessage executeInternal(QueryState state,
                                     QueryOptions options)

Description copied from interface: CQLStatement

Variant 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