Class ZippedFileCacheBacking

java.lang.Object

org.aspectj.weaver.tools.cache.AbstractCacheBacking

org.aspectj.weaver.tools.cache.AbstractFileCacheBacking

org.aspectj.weaver.tools.cache.AbstractIndexedFileCacheBacking

org.aspectj.weaver.tools.cache.AsynchronousFileCacheBacking

org.aspectj.weaver.tools.cache.ZippedFileCacheBacking

All Implemented Interfaces:

CacheBacking

public class ZippedFileCacheBacking
extends AsynchronousFileCacheBacking

Uses a ZIP file to store the instrumented classes/aspects - each one as a separate ZipEntry. This mechanism is suitable for relatively large numbers of instrumented classes/aspects (100's and more) since it holds all of them in a single (ZIP) file. The down side is that any modifications to the cache require re-writing the entire ZIP file. This can cause the ZIP file to become corrupted if interrupted in mid-update, thus requiring the re-population of the cache on next application activation (though the overhead in this case is not prohibitvely high...)

Nested Class Summary

Nested classes/interfaces inherited from class AsynchronousFileCacheBacking

AsynchronousFileCacheBacking.AbstractCommand, AsynchronousFileCacheBacking.AsyncCommand, AsynchronousFileCacheBacking.AsynchronousFileCacheBackingCreator<T>, AsynchronousFileCacheBacking.ClearCommand, AsynchronousFileCacheBacking.InsertCommand, AsynchronousFileCacheBacking.KeyedCommand, AsynchronousFileCacheBacking.RemoveCommand, AsynchronousFileCacheBacking.UpdateIndexCommand

Nested classes/interfaces inherited from class AbstractIndexedFileCacheBacking

AbstractIndexedFileCacheBacking.IndexEntry

Field Summary

Fields

Modifier and Type	Field	Description
static final String	ZIP_FILE

Fields inherited from class AsynchronousFileCacheBacking

bytesMap, exposedBytes, exposedIndex, index

Fields inherited from class AbstractIndexedFileCacheBacking

EMPTY_INDEX, EMPTY_KEYS, INDEX_FILE

Fields inherited from class AbstractFileCacheBacking

WEAVED_CLASS_CACHE_DIR

Fields inherited from class AbstractCacheBacking

logger

Constructor Summary

Constructors

Constructor	Description
ZippedFileCacheBacking(File cacheDir)

Method Summary

Modifier and Type	Method	Description
static final ZippedFileCacheBacking	createBacking(File cacheDir)
File	getZipFile()
protected Map<String,byte[]>	readClassBytes(Map<String, AbstractIndexedFileCacheBacking.IndexEntry> indexMap, File cacheDir)
static final Map<String,byte[]>	readZipClassBytes(File file)
protected void	removeClassBytes(String key)	Helper for AsynchronousFileCacheBacking.executeRemoveCommand(RemoveCommand)
protected AbstractIndexedFileCacheBacking.IndexEntry	resolveIndexMapEntry(File cacheDir, AbstractIndexedFileCacheBacking.IndexEntry ie)
protected boolean	syncClassBytesEntries(File dataFile, Map<String, AbstractIndexedFileCacheBacking.IndexEntry> indexMap, Map<String,byte[]> entriesMap)
protected Collection<String>	syncIndexEntries(File dataFile, Map<String, AbstractIndexedFileCacheBacking.IndexEntry> indexMap, Map<String,byte[]> entriesMap)
protected void	writeClassBytes(String key, byte[] bytes)
static final void	writeZipClassBytes(File file, Map<String,byte[]> entriesMap)

Methods inherited from class AsynchronousFileCacheBacking

clear, createBacking, executeClearCommand, executeCommand, executeInsertCommand, executeRemoveCommand, executeUpdateIndexCommand, get, getBytesMap, getIndex, getIndexEntries, getIndexMap, postCacheCommand, put, remove, remove, toString

Methods inherited from class AbstractIndexedFileCacheBacking

createIndexEntry, getIndexFile, getKeys, readIndex, readIndex, readIndex, writeIndex, writeIndex, writeIndex, writeIndex, writeIndex

Methods inherited from class AbstractFileCacheBacking

close, close, delete, getCacheDirectory

Methods inherited from class AbstractCacheBacking

crc

Methods inherited from class Object

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

Field Details

ZIP_FILE

public static final String ZIP_FILE

See Also:

• Constant Field Values

Constructor Details

ZippedFileCacheBacking

public ZippedFileCacheBacking(File cacheDir)

Method Details

getZipFile

public File getZipFile()

createBacking

public static final ZippedFileCacheBacking createBacking(File cacheDir)

writeClassBytes

protected void writeClassBytes(String key,
 byte[] bytes)
                        throws Exception

Overrides:

writeClassBytes in class AbstractFileCacheBacking

Throws:

Exception

removeClassBytes

protected void removeClassBytes(String key)
                         throws Exception

Description copied from class: AsynchronousFileCacheBacking

Helper for AsynchronousFileCacheBacking.executeRemoveCommand(RemoveCommand)

Specified by:

removeClassBytes in class AsynchronousFileCacheBacking

Parameters:

key - The key representing the class whose bytes are to be removed

Throws:

Exception - if failed to remove class bytes

readClassBytes

protected Map<String,byte[]> readClassBytes(Map<String, AbstractIndexedFileCacheBacking.IndexEntry> indexMap,
 File cacheDir)

Specified by:

readClassBytes in class AsynchronousFileCacheBacking

syncIndexEntries

protected Collection<String> syncIndexEntries(File dataFile,
 Map<String, AbstractIndexedFileCacheBacking.IndexEntry> indexMap,
 Map<String,byte[]> entriesMap)

syncClassBytesEntries

protected boolean syncClassBytesEntries(File dataFile,
 Map<String, AbstractIndexedFileCacheBacking.IndexEntry> indexMap,
 Map<String,byte[]> entriesMap)

resolveIndexMapEntry

protected AbstractIndexedFileCacheBacking.IndexEntry resolveIndexMapEntry(File cacheDir,
 AbstractIndexedFileCacheBacking.IndexEntry ie)

Overrides:

resolveIndexMapEntry in class AbstractIndexedFileCacheBacking

readZipClassBytes

public static final Map<String,byte[]> readZipClassBytes(File file)
                                                  throws IOException

Throws:

IOException

writeZipClassBytes

public static final void writeZipClassBytes(File file,
 Map<String,byte[]> entriesMap)
                                     throws IOException

Throws:

IOException