com::cosylab::logging::engine::cache::CacheEntry Class Reference

List of all members.

Public Member Functions
	CacheEntry (Integer key, long startPos, long endPos)
	CacheEntry (String hexadecimal)
String	toHexadecimal ()
Public Attributes
final int	key
final long	start
final long	end
Static Public Attributes
static final int	ENTRY_LENGTH = 40

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Detailed Description

An entry of the cache. It contains the name of the file where the entry is stored together with the position of the entry.

Having the name of the file allows to open and close the file when needed. In a previous version there was a RandomAccessFile instead of the name but it ended up with an error because the number of open file was exceeding the maximum allowed.

Author:

acaproni

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Constructor & Destructor Documentation

com::cosylab::logging::engine::cache::CacheEntry::CacheEntry	(	Integer	key,
		long	startPos,
		long	endPos
	)			[inline]

Constructor

Parameters:

	key	The key of the file where the entry is stored
	startPos	The starting position of the entry in the file
	endPos	The ending position of the entry in the file

References end, and start.

com::cosylab::logging::engine::cache::CacheEntry::CacheEntry

(

String

hexadecimal

)

[inline]

Constructor.

Build the entry by its hexadecimal representation

Parameters:

hexadecimal

See also:

toHexadecimal()

References end, key, and start.

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Member Function Documentation

String com::cosylab::logging::engine::cache::CacheEntry::toHexadecimal

(

)

[inline]

Translate the content of the entry in an hexadecimal string composed of the key, the start and end.

The array returned by this method can be written on a file. Its length is constant for each possible entry so the fields are not separated.

Returns:

An hexadecimal string representing the content of this entry

References end, key, and start.

Referenced by alma::acs::jlog::test::EngineCacheTest::testCacheEntryTranslation(), and com::cosylab::logging::engine::cache::CacheEntriesQueue::writePageOnFile().

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Member Data Documentation

final long com::cosylab::logging::engine::cache::CacheEntry::end

The ending position of the entry in the file

Referenced by CacheEntry(), alma::acs::jlog::test::EngineCacheTest::testCacheEntryTranslation(), alma::acs::jlog::test::TestEngineCacheEntriesQueue::testPushPopQueue(), alma::acs::jlog::test::TestEngineCacheEntriesQueue::testPushPopQueueVector(), alma::acs::jlog::test::TestEngineCacheEntriesQueue::testPushPopQueueVectorFile(), alma::acs::jlog::test::TestEngineCacheEntriesQueue::testRandomOrder(), and toHexadecimal().

final int com::cosylab::logging::engine::cache::CacheEntry::ENTRY_LENGTH = 40 [static]

The length of the bytes representing each entry.

This number is useful while caching the entries on a file.

40 is 8 for the integer and 2 time 16 for the longs.

See also:

toBytes()

final int com::cosylab::logging::engine::cache::CacheEntry::key

The key of the file where the entry is stored

Referenced by CacheEntry(), com::cosylab::logging::engine::cache::EngineCache::pop(), alma::acs::jlog::test::EngineCacheTest::testCacheEntryTranslation(), alma::acs::jlog::test::TestEngineCacheEntriesQueue::testPushPopQueue(), alma::acs::jlog::test::TestEngineCacheEntriesQueue::testPushPopQueueVector(), alma::acs::jlog::test::TestEngineCacheEntriesQueue::testPushPopQueueVectorFile(), alma::acs::jlog::test::TestEngineCacheEntriesQueue::testRandomOrder(), and toHexadecimal().

final long com::cosylab::logging::engine::cache::CacheEntry::start

The starting position of the entry in the file

Referenced by CacheEntry(), alma::acs::jlog::test::EngineCacheTest::testCacheEntryTranslation(), alma::acs::jlog::test::TestEngineCacheEntriesQueue::testPushPopQueue(), alma::acs::jlog::test::TestEngineCacheEntriesQueue::testPushPopQueueVector(), alma::acs::jlog::test::TestEngineCacheEntriesQueue::testPushPopQueueVectorFile(), alma::acs::jlog::test::TestEngineCacheEntriesQueue::testRandomOrder(), and toHexadecimal().

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The documentation for this class was generated from the following file:

• CacheEntry.java