org.apache.cassandra.io.sstable

Class Component

java.lang.Object

org.apache.cassandra.io.sstable.Component

public class Component
extends java.lang.Object

SSTables are made up of multiple components in separate files. Components are identified by a type and an id, but required unique components (such as the Data and Index files) may have implicit ids assigned to them.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Component.Type

Field Summary

Fields

Modifier and Type	Field and Description
static Component	COMPRESSION_INFO
static Component	CRC
static Component	DATA
static Component	DIGEST
static Component	FILTER
int	hashCode
java.lang.String	name
static Component	PRIMARY_INDEX
static char	separator
static Component	STATS
static Component	SUMMARY
static Component	TOC
Component.Type	type

Constructor Summary

Constructors

Constructor and Description
Component(Component.Type type)
Component(Component.Type type, java.lang.String name)

Method Summary

Methods

Modifier and Type	Method and Description
boolean	equals(java.lang.Object o)
static Pair<Descriptor,Component>	fromFilename(java.io.File directory, java.lang.String name) Filename of the form "/-[tmp-][-]-",
int	hashCode()
java.lang.String	name()
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

separator

public static final char separator

See Also:

Constant Field Values

DATA

public static final Component DATA

PRIMARY_INDEX

public static final Component PRIMARY_INDEX

FILTER

public static final Component FILTER

COMPRESSION_INFO

public static final Component COMPRESSION_INFO

STATS

public static final Component STATS

DIGEST

public static final Component DIGEST

CRC

public static final Component CRC

SUMMARY

public static final Component SUMMARY

TOC

public static final Component TOC

type

public final Component.Type type

name

public final java.lang.String name

hashCode

public final int hashCode

Constructor Detail

Component

public Component(Component.Type type)

Component

public Component(Component.Type type,
         java.lang.String name)

Method Detail

name

public java.lang.String name()

Returns:

The unique (within an sstable) name for this component.

fromFilename

public static Pair<Descriptor,Component> fromFilename(java.io.File directory,
                                      java.lang.String name)

Filename of the form "/-[tmp-][-]-",

Returns:

A Descriptor for the SSTable, and a Component for this particular file. TODO move descriptor into Component field

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object