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, CreateIndexStatement, CreateKeyspaceStatement, CreateTableStatement, CreateTriggerStatement, DropIndexStatement, DropKeyspaceStatement, DropTableStatement, DropTriggerStatement

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

Methods

Modifier and Type	Method and Description
abstract void	announceMigration()
abstract ResultMessage.SchemaChange.Change	changeType()
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	prepareKeyspace(ClientState state)

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

columnFamily, keyspace

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

checkAccess, getBoundsTerms, validate

Constructor Detail

SchemaAlteringStatement

protected SchemaAlteringStatement()

SchemaAlteringStatement

protected SchemaAlteringStatement(CFName name)

Method Detail

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

changeType

public abstract ResultMessage.SchemaChange.Change changeType()

announceMigration

public abstract void announceMigration()
                                throws RequestValidationException

Throws:

RequestValidationException

execute

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

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:

RequestValidationException

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