me.prettyprint.cassandra.service.template
Class ColumnFamilyUpdater<K,N>

java.lang.Object
  me.prettyprint.cassandra.service.template.AbstractTemplateUpdater<K,N>
      me.prettyprint.cassandra.service.template.ColumnFamilyUpdater<K,N>

Type Parameters:

K - the key's data type

N - the standard or super column's data type

public class ColumnFamilyUpdater<K,N>
extends AbstractTemplateUpdater<K,N>

This provides an interface of updating a specified row, most likely with the contents of an object. This would likely by implemented as an anonymous inner class with access to a final object in scope. It would update the given row with the object's data. For more complex behaviour, subclasses should implementat update() to simply make consecutive calls to various set****() methods which already have the contextual information they need to update the correct row. The downside of this approach is that the updater is essentially stateful and cannot be used concurrently. The alternative is to pass an object in to update() as a parameter with the setter methods, leaving the updater to be stateless.

Author:

david, zznate

Field Summary

Fields inherited from class me.prettyprint.cassandra.service.template.AbstractTemplateUpdater

columnFactory, keyPos, keys, mutator, template

Constructor Summary

ColumnFamilyUpdater(ColumnFamilyTemplate<K,N> template, ColumnFactory columnFactory)
Constructs a ColumnFamilyUpdater with the provided ColumnFamilyTemplate and ColumnFactory.

ColumnFamilyUpdater(ColumnFamilyTemplate<K,N> template, ColumnFactory columnFactory, Mutator<K> mutator)
Same as 2-arg version, except we use the provided Mutator

Method Summary

void	deleteColumn(N columnName)
void	setBoolean(N columnName, Boolean value)
void	setByteArray(N columnName, byte[] value)
void	setByteBuffer(N columnName, ByteBuffer value)
<V> void	setColumn(HColumn<N,V> column)
void	setDate(N columnName, Date value)
void	setDouble(N columnName, Double value)
void	setInteger(N columnName, Integer value)
void	setLong(N columnName, Long value)
void	setString(N columnName, String value)
void	setUUID(N columnName, UUID value)
<V> void	setValue(N columnName, V value, Serializer<V> serializer)

Methods inherited from class me.prettyprint.cassandra.service.template.AbstractTemplateUpdater

addKey, getCurrentKey, getCurrentMutator, update

Methods inherited from class java.lang.Object

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

Constructor Detail

ColumnFamilyUpdater

public ColumnFamilyUpdater(ColumnFamilyTemplate<K,N> template,
                           ColumnFactory columnFactory)

Constructs a ColumnFamilyUpdater with the provided ColumnFamilyTemplate and ColumnFactory. A Mutator is created internally for this updater.

Parameters:

template -

columnFactory -

ColumnFamilyUpdater

public ColumnFamilyUpdater(ColumnFamilyTemplate<K,N> template,
                           ColumnFactory columnFactory,
                           Mutator<K> mutator)

Same as 2-arg version, except we use the provided Mutator

Parameters:

template -

columnFactory -

mutator -

Method Detail

deleteColumn

public void deleteColumn(N columnName)

setString

public void setString(N columnName,
                      String value)

setUUID

public void setUUID(N columnName,
                    UUID value)

setLong

public void setLong(N columnName,
                    Long value)

setInteger

public void setInteger(N columnName,
                       Integer value)

setDouble

public void setDouble(N columnName,
                      Double value)

setBoolean

public void setBoolean(N columnName,
                       Boolean value)

setByteArray

public void setByteArray(N columnName,
                         byte[] value)

setByteBuffer

public void setByteBuffer(N columnName,
                          ByteBuffer value)

setDate

public void setDate(N columnName,
                    Date value)

setValue

public <V> void setValue(N columnName,
                         V value,
                         Serializer<V> serializer)

setColumn

public <V> void setColumn(HColumn<N,V> column)