com.alexkasko.unsafe.offheapstruct

Class OffHeapStructComparator

java.lang.Object

com.alexkasko.unsafe.offheapstruct.OffHeapStructComparator

 class OffHeapStructComparator
extends Object

Internal wrapper for user-provided comparator. NOT thread-safe.

Author:

alexkasko Date: 9/13/13

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private static class	OffHeapStructComparator.OffHeapStructByteArrayAccessor Struct's accessor implementation for byte array structs
private static class	OffHeapStructComparator.OffHeapStructIndexAccessor Struct's accessor implementation for off-heap stored structs

Field Summary

Fields

Modifier and Type	Field and Description
private OffHeapStructComparator.OffHeapStructByteArrayAccessor	baa1
private OffHeapStructComparator.OffHeapStructByteArrayAccessor	baa2
private Comparator<OffHeapStructAccessor>	comp
private OffHeapStructComparator.OffHeapStructIndexAccessor	ia1
private OffHeapStructComparator.OffHeapStructIndexAccessor	ia2

Constructor Summary

Constructors

Constructor and Description
OffHeapStructComparator(OffHeapStructCollection col, Comparator<OffHeapStructAccessor> comp) Constructor

Method Summary

Methods

Modifier and Type	Method and Description
(package private) int	compare(long index1, byte[] struct2) Calls compare on comparator and return it results
(package private) boolean	eq(byte[] struct1, byte[] struct2) Equals operation
(package private) boolean	eq(long index1, byte[] struct2) Equals operation
(package private) boolean	gt(long index1, byte[] struct2) Greater-then operation
(package private) boolean	gt(long index1, long index2) Greater-then operation
(package private) boolean	lt(byte[] struct1, long index2) Lesser-then operation
(package private) boolean	lt(long index1, byte[] struct2) Lesser-then operation
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

ia1

private final OffHeapStructComparator.OffHeapStructIndexAccessor ia1

ia2

private final OffHeapStructComparator.OffHeapStructIndexAccessor ia2

baa1

private final OffHeapStructComparator.OffHeapStructByteArrayAccessor baa1

baa2

private final OffHeapStructComparator.OffHeapStructByteArrayAccessor baa2

comp

private final Comparator<OffHeapStructAccessor> comp

Constructor Detail

OffHeapStructComparator

OffHeapStructComparator(OffHeapStructCollection col,
                       Comparator<OffHeapStructAccessor> comp)

Constructor

Parameters:

col - collection for index access

comp - comparator

Method Detail

gt

boolean gt(long index1,
         long index2)

Greater-then operation

Parameters:

index1 - collection index

index2 - collection index

Returns:

'gt' operation result

gt

boolean gt(long index1,
         byte[] struct2)

Greater-then operation

Parameters:

index1 - collection index

struct2 - structure

Returns:

'gt' operation result

lt

boolean lt(long index1,
         byte[] struct2)

Lesser-then operation

Parameters:

index1 - collection index

struct2 - structure

Returns:

'lt' operation result

lt

boolean lt(byte[] struct1,
         long index2)

Lesser-then operation

Parameters:

struct1 - structure

index2 - collection index

Returns:

'lt' operation result

eq

boolean eq(long index1,
         byte[] struct2)

Equals operation

Parameters:

index1 - collection index

struct2 - structure

Returns:

'eq' operation result

eq

boolean eq(byte[] struct1,
         byte[] struct2)

Equals operation

Parameters:

struct1 - structure

struct2 - structure

Returns:

'eq' operation result

compare

int compare(long index1,
          byte[] struct2)

Calls compare on comparator and return it results

Parameters:

index1 - collection index

struct2 - structure

Returns:

compare result from comparator

toString

public String toString()

Overrides:

toString in class Object