org.aspectj.weaver.tools.cache

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 org.aspectj.weaver.tools.cache.AsynchronousFileCacheBacking

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

Nested classes/interfaces inherited from class org.aspectj.weaver.tools.cache.AbstractIndexedFileCacheBacking

AbstractIndexedFileCacheBacking.IndexEntry

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	ZIP_FILE

Fields inherited from class org.aspectj.weaver.tools.cache.AsynchronousFileCacheBacking

bytesMap, exposedBytes, exposedIndex, index

Fields inherited from class org.aspectj.weaver.tools.cache.AbstractIndexedFileCacheBacking

EMPTY_INDEX, EMPTY_KEYS, INDEX_FILE

Fields inherited from class org.aspectj.weaver.tools.cache.AbstractFileCacheBacking

WEAVED_CLASS_CACHE_DIR

Fields inherited from class org.aspectj.weaver.tools.cache.AbstractCacheBacking

logger

Constructor Summary

Constructors

Constructor and Description
ZippedFileCacheBacking(java.io.File cacheDir)

Method Summary

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

Methods inherited from class org.aspectj.weaver.tools.cache.AsynchronousFileCacheBacking

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

Methods inherited from class org.aspectj.weaver.tools.cache.AbstractIndexedFileCacheBacking

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

Methods inherited from class org.aspectj.weaver.tools.cache.AbstractFileCacheBacking

close, close, delete, getCacheDirectory

Methods inherited from class org.aspectj.weaver.tools.cache.AbstractCacheBacking

crc

Methods inherited from class java.lang.Object

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

Field Detail

ZIP_FILE

public static final java.lang.String ZIP_FILE

See Also:

Constant Field Values

Constructor Detail

ZippedFileCacheBacking

public ZippedFileCacheBacking(java.io.File cacheDir)

Method Detail

getZipFile

public java.io.File getZipFile()

createBacking

public static final ZippedFileCacheBacking createBacking(java.io.File cacheDir)

writeClassBytes

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

Overrides:

writeClassBytes in class AbstractFileCacheBacking

Throws:

java.lang.Exception

removeClassBytes

protected void removeClassBytes(java.lang.String key)
                         throws java.lang.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:

java.lang.Exception - if failed to remove class bytes

readClassBytes

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

Specified by:

readClassBytes in class AsynchronousFileCacheBacking

syncIndexEntries

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

syncClassBytesEntries

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

resolveIndexMapEntry

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

Overrides:

resolveIndexMapEntry in class AbstractIndexedFileCacheBacking

readZipClassBytes

public static final java.util.Map<java.lang.String,byte[]> readZipClassBytes(java.io.File file)
                                                                      throws java.io.IOException

Throws:

java.io.IOException

writeZipClassBytes

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

Throws:

java.io.IOException