org.apache.cassandra.cql
Class UpdateStatement

java.lang.Object
  org.apache.cassandra.cql.AbstractModification
      org.apache.cassandra.cql.UpdateStatement

public class UpdateStatement
extends AbstractModification

An UPDATE statement parsed from a CQL query statement.

Field Summary

Fields inherited from class org.apache.cassandra.cql.AbstractModification

cLevel, columnFamily, defaultConsistency, keyName, timestamp, timeToLive

Constructor Summary

UpdateStatement(java.lang.String columnFamily, java.lang.String keyName, java.util.List<Term> columnNames, java.util.List<Term> columnValues, java.util.List<Term> keys, Attributes attrs)
Creates a new UpdateStatement from a column family name, a consistency level, key, and lists of column names and values.

UpdateStatement(java.lang.String columnFamily, java.lang.String keyName, java.util.Map<Term,Operation> columns, java.util.List<Term> keys, Attributes attrs)
Creates a new UpdateStatement from a column family name, columns map, consistency level, and key term.

Method Summary

java.lang.String	getColumnFamily()
java.util.Map<Term,Operation>	getColumns()
AbstractType<?>	getComparator(java.lang.String keyspace)
org.apache.cassandra.thrift.ConsistencyLevel	getConsistencyLevel() Returns the consistency level of this UPDATE statement, either one parsed from the CQL statement, or the default level otherwise.
java.util.List<Term>	getKeys()
AbstractType<?>	getKeyType(java.lang.String keyspace)
AbstractType<?>	getValueValidator(java.lang.String keyspace, java.nio.ByteBuffer column)
boolean	isSetConsistencyLevel() True if an explicit consistency level was parsed from the statement.
java.util.List<IMutation>	prepareRowMutations(java.lang.String keyspace, ClientState clientState) Convert statement into a list of mutations to apply on the server
java.util.List<IMutation>	prepareRowMutations(java.lang.String keyspace, ClientState clientState, java.lang.Long timestamp) Convert statement into a list of mutations to apply on the server
java.lang.String	toString()

Methods inherited from class org.apache.cassandra.cql.AbstractModification

getTimestamp, getTimeToLive, isSetTimestamp

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

UpdateStatement

public UpdateStatement(java.lang.String columnFamily,
                       java.lang.String keyName,
                       java.util.Map<Term,Operation> columns,
                       java.util.List<Term> keys,
                       Attributes attrs)

Creates a new UpdateStatement from a column family name, columns map, consistency level, and key term.

Parameters:

columnFamily - column family name

keyName - alias key name

columns - a map of column name/values pairs

keys - the keys to update

attrs - additional attributes for statement (CL, timestamp, timeToLive)

UpdateStatement

public UpdateStatement(java.lang.String columnFamily,
                       java.lang.String keyName,
                       java.util.List<Term> columnNames,
                       java.util.List<Term> columnValues,
                       java.util.List<Term> keys,
                       Attributes attrs)

Creates a new UpdateStatement from a column family name, a consistency level, key, and lists of column names and values. It is intended for use with the alternate update format, INSERT.

Parameters:

columnFamily - column family name

keyName - alias key name

columnNames - list of column names

columnValues - list of column values (corresponds to names)

keys - the keys to update

attrs - additional attributes for statement (CL, timestamp, timeToLive)

Method Detail

getConsistencyLevel

public org.apache.cassandra.thrift.ConsistencyLevel getConsistencyLevel()

Returns the consistency level of this UPDATE statement, either one parsed from the CQL statement, or the default level otherwise.

Overrides:

getConsistencyLevel in class AbstractModification

Returns:

the consistency level as a Thrift enum.

isSetConsistencyLevel

public boolean isSetConsistencyLevel()

True if an explicit consistency level was parsed from the statement.

Overrides:

isSetConsistencyLevel in class AbstractModification

Returns:

true if a consistency was parsed, false otherwise.

prepareRowMutations

public java.util.List<IMutation> prepareRowMutations(java.lang.String keyspace,
                                                     ClientState clientState)
                                              throws org.apache.cassandra.thrift.InvalidRequestException

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

Specified by:

prepareRowMutations in class AbstractModification

Parameters:

keyspace - The working keyspace

clientState - current client status

Returns:

list of the mutations

Throws:

org.apache.cassandra.thrift.InvalidRequestException - on the wrong request

prepareRowMutations

public java.util.List<IMutation> prepareRowMutations(java.lang.String keyspace,
                                                     ClientState clientState,
                                                     java.lang.Long timestamp)
                                              throws org.apache.cassandra.thrift.InvalidRequestException

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

Specified by:

prepareRowMutations in class AbstractModification

Parameters:

keyspace - The working keyspace

clientState - current client status

timestamp - global timestamp to use for all mutations

Returns:

list of the mutations

Throws:

org.apache.cassandra.thrift.InvalidRequestException - on the wrong request

getColumnFamily

public java.lang.String getColumnFamily()

Overrides:

getColumnFamily in class AbstractModification

getKeys

public java.util.List<Term> getKeys()

getColumns

public java.util.Map<Term,Operation> getColumns()
                                         throws org.apache.cassandra.thrift.InvalidRequestException

Throws:

org.apache.cassandra.thrift.InvalidRequestException

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

getKeyType

public AbstractType<?> getKeyType(java.lang.String keyspace)

getComparator

public AbstractType<?> getComparator(java.lang.String keyspace)

getValueValidator

public AbstractType<?> getValueValidator(java.lang.String keyspace,
                                         java.nio.ByteBuffer column)