com.thinkaurelius.titan.diskstorage.cassandra.utils

Class CassandraHelper

java.lang.Object

com.thinkaurelius.titan.diskstorage.cassandra.utils.CassandraHelper

public class CassandraHelper
extends Object

Constructor Summary

Constructors

Constructor and Description
CassandraHelper()

Method Summary

Modifier and Type	Method and Description
static List<ByteBuffer>	convert(List<StaticBuffer> keys)
static <E> Iterator<Entry>	makeEntryIterator(Iterable<E> entries, StaticArrayEntry.GetColVal<E,ByteBuffer> getter, StaticBuffer lastColumn, int limit)
static <E> EntryList	makeEntryList(Iterable<E> entries, StaticArrayEntry.GetColVal<E,ByteBuffer> getter, StaticBuffer lastColumn, int limit) Constructs an EntryList from the Iterable of entries while excluding the end slice (since the method contract states that the end slice is exclusive, yet Cassandra treats it as inclusive) and respecting the limit.
static KeyRange	transformRange(org.apache.cassandra.dht.Range<org.apache.cassandra.dht.Token> range)
static KeyRange	transformRange(org.apache.cassandra.dht.Token<?> leftKeyExclusive, org.apache.cassandra.dht.Token<?> rightKeyInclusive)

Methods inherited from class java.lang.Object

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

Constructor Detail

CassandraHelper

public CassandraHelper()

Method Detail

convert

public static List<ByteBuffer> convert(List<StaticBuffer> keys)

makeEntryList

public static <E> EntryList makeEntryList(Iterable<E> entries,
                                          StaticArrayEntry.GetColVal<E,ByteBuffer> getter,
                                          StaticBuffer lastColumn,
                                          int limit)

Constructs an EntryList from the Iterable of entries while excluding the end slice (since the method contract states that the end slice is exclusive, yet Cassandra treats it as inclusive) and respecting the limit.

Type Parameters:

E -

Parameters:

entries -

getter -

lastColumn - TODO: make this StaticBuffer so we can avoid the conversion and provide equals method

limit -

Returns:

makeEntryIterator

public static <E> Iterator<Entry> makeEntryIterator(Iterable<E> entries,
                                                    StaticArrayEntry.GetColVal<E,ByteBuffer> getter,
                                                    StaticBuffer lastColumn,
                                                    int limit)

transformRange

public static KeyRange transformRange(org.apache.cassandra.dht.Range<org.apache.cassandra.dht.Token> range)

transformRange

public static KeyRange transformRange(org.apache.cassandra.dht.Token<?> leftKeyExclusive,
                                      org.apache.cassandra.dht.Token<?> rightKeyInclusive)