org.apache.cassandra.cql3.statements
Class ModificationStatement

java.lang.Object
  org.apache.cassandra.cql3.statements.ParsedStatement
      org.apache.cassandra.cql3.statements.CFStatement
          org.apache.cassandra.cql3.statements.ModificationStatement

All Implemented Interfaces:

CQLStatement

Direct Known Subclasses:

BatchStatement, DeleteStatement, UpdateStatement

public abstract class ModificationStatement
extends CFStatement
implements CQLStatement

Abstract class for statements that apply on a given column family.

Nested Class Summary

static class

ModificationStatement.Type

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

ParsedStatement.Prepared

Field Summary

static ConsistencyLevel	defaultConsistency
protected ModificationStatement.Type	type

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

cfName

Constructor Summary

ModificationStatement(CFName name, Attributes attrs)

ModificationStatement(CFName name, java.lang.Long timestamp, int timeToLive)

Method Summary

void	checkAccess(ClientState state) Perform any access verification necessary for the statement.
ResultMessage	execute(ConsistencyLevel cl, QueryState queryState, java.util.List<java.nio.ByteBuffer> variables) Execute the statement and return the resulting result or null if there is no result.
ResultMessage	executeInternal(QueryState queryState) Variante of execute used for internal query against the system tables, and thus only query the local node.
protected abstract java.util.Collection<? extends IMutation>	getMutations(java.util.List<java.nio.ByteBuffer> variables, boolean local, ConsistencyLevel cl, long now) Convert statement into a list of mutations to apply on the server
long	getTimestamp(long now)
int	getTimeToLive()
boolean	isSetTimestamp()
abstract ParsedStatement.Prepared	prepare(ColumnSpecification[] boundNames)
protected java.util.Map<java.nio.ByteBuffer,ColumnGroupMap>	readRows(java.util.List<java.nio.ByteBuffer> keys, ColumnNameBuilder builder, java.util.Set<java.nio.ByteBuffer> toRead, CompositeType composite, boolean local, ConsistencyLevel cl)
void	setTimestamp(long timestamp)
void	validate(ClientState state) Perform additional validation required by the statment.
protected abstract void	validateConsistency(ConsistencyLevel cl)

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

columnFamily, keyspace, prepareKeyspace

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

getBoundsTerms, prepare, 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

Field Detail

defaultConsistency

public static final ConsistencyLevel defaultConsistency

type

protected ModificationStatement.Type type

Constructor Detail

ModificationStatement

public ModificationStatement(CFName name,
                             Attributes attrs)

ModificationStatement

public ModificationStatement(CFName name,
                             java.lang.Long timestamp,
                             int timeToLive)

Method Detail

checkAccess

public void checkAccess(ClientState state)
                 throws InvalidRequestException,
                        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:

InvalidRequestException

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

validateConsistency

protected abstract void validateConsistency(ConsistencyLevel cl)
                                     throws InvalidRequestException

Throws:

InvalidRequestException

execute

public ResultMessage execute(ConsistencyLevel cl,
                             QueryState queryState,
                             java.util.List<java.nio.ByteBuffer> variables)
                      throws RequestExecutionException,
                             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

queryState - the current query state

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

Throws:

RequestExecutionException

RequestValidationException

executeInternal

public ResultMessage executeInternal(QueryState queryState)
                              throws RequestValidationException,
                                     RequestExecutionException

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:

queryState - the current query state

Throws:

RequestValidationException

RequestExecutionException

getTimestamp

public long getTimestamp(long now)

setTimestamp

public void setTimestamp(long timestamp)

isSetTimestamp

public boolean isSetTimestamp()

getTimeToLive

public int getTimeToLive()

readRows

protected java.util.Map<java.nio.ByteBuffer,ColumnGroupMap> readRows(java.util.List<java.nio.ByteBuffer> keys,
                                                                     ColumnNameBuilder builder,
                                                                     java.util.Set<java.nio.ByteBuffer> toRead,
                                                                     CompositeType composite,
                                                                     boolean local,
                                                                     ConsistencyLevel cl)
                                                              throws RequestExecutionException,
                                                                     RequestValidationException

Throws:

RequestExecutionException

RequestValidationException

getMutations

protected abstract java.util.Collection<? extends IMutation> getMutations(java.util.List<java.nio.ByteBuffer> variables,
                                                                          boolean local,
                                                                          ConsistencyLevel cl,
                                                                          long now)
                                                                   throws RequestExecutionException,
                                                                          RequestValidationException

Convert statement into a list of mutations to apply on the server

Parameters:

variables - value for prepared statement markers

local - if true, any requests (for collections) performed by getMutation should be done locally only.

cl - the consistency to use for the potential reads involved in generating the mutations (for lists set/delete operations)

now - the current timestamp in microseconds to use if no timestamp is user provided.

Returns:

list of the mutations

Throws:

InvalidRequestException - on invalid requests

RequestExecutionException

RequestValidationException

prepare

public abstract ParsedStatement.Prepared prepare(ColumnSpecification[] boundNames)
                                          throws InvalidRequestException

Throws:

InvalidRequestException