org.apache.giraph.types.ops.collections

Class BasicCollectionsUtils

java.lang.Object

org.apache.giraph.types.ops.collections.BasicCollectionsUtils

public class BasicCollectionsUtils
extends Object

Utility functions for constructing basic collections

Method Summary

Modifier and Type	Method and Description
static <I extends org.apache.hadoop.io.Writable,V> Basic2ObjectMap<I,V>	create2ObjectMap(Class<I> idClass) Construct OpenHashMap with primitive keys.
static <I extends org.apache.hadoop.io.Writable,V> Basic2ObjectMap<I,V>	create2ObjectMap(Class<I> idClass, WritableWriter<I> keyWriter, WritableWriter<V> valueWriter) Construct OpenHashMap with primitive keys.

Methods inherited from class java.lang.Object

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

Method Detail

create2ObjectMap

public static <I extends org.apache.hadoop.io.Writable,V> Basic2ObjectMap<I,V> create2ObjectMap(Class<I> idClass)

Construct OpenHashMap with primitive keys.

Type Parameters:

I - Vertex id type

V - Value type

Parameters:

idClass - Class type

Returns:

map

create2ObjectMap

public static <I extends org.apache.hadoop.io.Writable,V> Basic2ObjectMap<I,V> create2ObjectMap(Class<I> idClass,
                                                                                                WritableWriter<I> keyWriter,
                                                                                                WritableWriter<V> valueWriter)

Construct OpenHashMap with primitive keys. If keyWriter/valueWriter are not provided, readFields/write will throw an Exception, if called.

Type Parameters:

I - Vertex id type

V - Value type

Parameters:

idClass - Class type

keyWriter - writer for keys

valueWriter - writer for values

Returns:

map