some file types are containers for several files. These containers had been parsed in such a way that the set of resulting parsed content was merged into one single document before parsing. Using this parser infrastructure it is not possible to parse document containers that contain individual files. An example is a rss file where the rss messages can be treated as individual documents with their own url reference. Another example is a surrogate file which was treated with a special operation outside of the parser infrastructure.
This commit introduces a redesigned parser interface and a new abstract parser implementation. The new parser interface has now only one entry point and returns always a set of parsed documents. In case of single documents the parser method returns a set of one documents.
To be compliant with the new interface, the zip and tar parser had been also completely redesigned. All parsers are now much more simple and cleaner in its structure. The switchboard operations had been extended to operate with sets of parsed files, not single parsed files.
additionally, parsing of jar manifest files had been added.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6955 6c8d7289-2bf4-0310-a012-ef5d649a1542
see http://www.gnu.org/licenses/license-list.html for explanation
Since (as far as I know) nobody else has ever contributed to these files I may be allowed to just apply an older license.
You may consider this as a dual-licensing and may use and optionally replicate the older files under GPL 3.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6952 6c8d7289-2bf4-0310-a012-ef5d649a1542
- cleaned uo the code. The new eclipse helios provided new warnings for dead code. This change cleans up most of these warnings
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6945 6c8d7289-2bf4-0310-a012-ef5d649a1542
- removed concurrency overhead for small number of index normalizations as it happens during remote search
- removed 'load only parseable' constraint for snippet fetch because some resources may not have any url file extension and these had therefore not been parseable and searcheable since they may become parseable after loading when their mime type is known
- this partly fixes some problems with http://forum.yacy-websuche.de/viewtopic.php?p=20300#p20300 but more changes are necessary to get all expected search results
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6926 6c8d7289-2bf4-0310-a012-ef5d649a1542
- crawl lists for each domain now uses a HandleSet which should use less memory than LinkedLists
- but: fill more entries into the domain lists (all available entries)
- fixes to selection criteria (best domain selection)
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6909 6c8d7289-2bf4-0310-a012-ef5d649a1542
- it is now possible to crawl the local file system with an intranet peer
- redesign of URL handling
- refactoring: created LGPLed package cora: 'content retrieval api' which may be used externally by other applications without yacy core elements because it has no dependencies to other parts of yacy
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6902 6c8d7289-2bf4-0310-a012-ef5d649a1542
- used that to display two layers on map: cities and search result locations
- added many marker grafics for the display of the markers on the map
- some refactoring of the yacy news code plus bugfixes for latest move from Tree to Table data structure
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6889 6c8d7289-2bf4-0310-a012-ef5d649a1542
- fix for initial generation of crawl profiles (one more reason to remove your crawl profiles)
- more String -> byte[] migration
- more logging for cache store/hit
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6874 6c8d7289-2bf4-0310-a012-ef5d649a1542
- fixes to http file server session handling
- fixes and enhancements to metadata date/time handling
- added dc:publisher metadata field and updated all document parser
- fixed bug in metdata read procedure
- enhanced dublin core and rss parser to understand more fields more properly
- enhanced url selection in case that multiple urls are given in surrogates
- fix for condenser; failure when last word does not end with termination symbol
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6863 6c8d7289-2bf4-0310-a012-ef5d649a1542
- now importing OAI-PMH server list fron two sources
- simultanous import from several servers (even > 2000)
- check buttons on OAI-PMH server list to select multiple servers for import start
- it is possible to select all servers at once for import
- imported XML data is gzipped after import from surrogate reader
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6847 6c8d7289-2bf4-0310-a012-ef5d649a1542
- added crawling queue sizes to /api/status_p.xml, syntax same as in queues_p.html
- fixed a bug in queue enumeration that caused a out of bounds exception
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6842 6c8d7289-2bf4-0310-a012-ef5d649a1542
http://java.sun.com/javase/6/webnotes/trouble/TSG-VM/html/memleaks.html#gbyvh
The finalize method prevents that the memory, used by the objects containing the finalize method, is collected and available for the garbage collector. Instead, the memory allocated by such classes are enqueued to a java-internal finalize queue runner. This slows down all operations that uses a lot of object containing finalize methods.
this fix does not remove all finalize method, but such that may be used for throw-away objects that are allocated many times. This should cause a better run-time performance and less OutOfMemoryErrors
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6835 6c8d7289-2bf4-0310-a012-ef5d649a1542
Non-catched jobs may have been the cause for blockings and freezes in case of overloading during strong processing
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6827 6c8d7289-2bf4-0310-a012-ef5d649a1542
for such cases the delete() operation was introduced which is sometimes much cheaper in operation since it does not need to create objects to hold the removed content and it does not need to read those objects.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6824 6c8d7289-2bf4-0310-a012-ef5d649a1542
- no direct deletion of referenced during search (shifted to time after search)
- bundling of all deletions for the references of a single word into one remove operation
- enhanced remove operation by caring that the collection is stored sorted (experimental)
- more String -> byte[] transition for search word lists
- clean up of unused code
- enhanced memory allocation of RowSet Objects (will use a little bit less memory which was wasted before)
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6823 6c8d7289-2bf4-0310-a012-ef5d649a1542
- removed usage of URL-Caches which could have been a memory leak
- removed unused classes and methods
- removed not necessary synchronizations
- added synchronization hacks where possible
- fine-tuned crawling speed to prevent IO of balancer
- fixed a bug in IODispatcher that may have caused that no merges were done
- reduced number of parameters in very often called methods (compare methods)
- reduced complexity of data structures of now massively used HandleSet class
- reduction of new String() and getBytes() usage / new methods to support this transition
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6820 6c8d7289-2bf4-0310-a012-ef5d649a1542
- enhanced the Balancer performance when building new domain stacks using a new Table buffer
- added the new Table buffer BufferedObjectIndex class
- changed order of access to LURL-read (prefereing segment over Crawl Queues) will reduced blocking time on balancer
- fixed PPM setting in Crawler_p servlet (had doubled values)
- reduced synchronization in IndexCell because it is not necessary: reduced blocking during indexing/merging/dumping
- removed did-you-mean cache in IndexCell because that caused too much overhead and more memory usage but was not very useful. This reduced also deadlocks that could be causes when searched are performed during indexing.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6819 6c8d7289-2bf4-0310-a012-ef5d649a1542
The result should be a less usage of new String() and less memory usage (since a String-encapsulated byte[] has 40 bytes overhead)
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6815 6c8d7289-2bf4-0310-a012-ef5d649a1542
This should prevent URLs with bad referrer entries from being dropped by transferURL or even crashing the whole Transmission$Chunk
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6792 6c8d7289-2bf4-0310-a012-ef5d649a1542
pass value as byte[], not as String. This should cause that less
byte[] <-> String conversions are made during time-critical tasks.
This redesign is not yet complete, more to come ..
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6775 6c8d7289-2bf4-0310-a012-ef5d649a1542
- reverted SVN 6766, this is too dangerous (may cause unexpected memory usage) and should not be necessary
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6773 6c8d7289-2bf4-0310-a012-ef5d649a1542
This should speed up RWI cache dump and RWI merge operations and should cause less blocking time during these processes for the indexer.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6771 6c8d7289-2bf4-0310-a012-ef5d649a1542
- added 'select all' feature in Tables_p
- enhanced ViewFile.html: has now an input field to load arbitrary resources from the web and analyze them (!!!)
- included the ViewFile servlet into the Index Administration menu
- show in ViewFile if ressource is in url-db and/or in Web cache
- bugfixes to BEncodedHeap and Tables management
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6713 6c8d7289-2bf4-0310-a012-ef5d649a1542
- moved storage of robots.txt entries to WorkTables, so it is now possible to browse the robots entries with the table browser
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6710 6c8d7289-2bf4-0310-a012-ef5d649a1542
will loose its leading role for the re-crawl funtion when the new api tables will work. To be prepared for a replacement
of such functions the bookmark class is re-organised.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6637 6c8d7289-2bf4-0310-a012-ef5d649a1542
all operations on YaCy in a database that should make it possible
1) to re-create a setting on fresh peers
2) to transmit a setting from one peer to another
3) to re-create crawl starts after a complete deletion of the index
This functionality will also support
4) scheduled re-crawls (new implementation)
To implement this, a new database structure has been crated that stores maps into blob heaps. to encode maps the b-encoding technique was used (this is the same encoding that torrent files use)
- added a b-encoder
- enhanced the b-decoder
- added a b-encoded map heap data structure
- added a table organisation based on b-encoded heaps
- added a servlet to maintain such tables (see Tables_p.html)
- integrated the servlet into the Advanced Settings menu
- added an api recording based on the new tables
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6606 6c8d7289-2bf4-0310-a012-ef5d649a1542
- added BEncodedHeap class that encodes B data structures and stores that to a heap
- refactoring of MapView, this is now named MapHeap to fit into the naming scheme of the BEncodedHeap
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6579 6c8d7289-2bf4-0310-a012-ef5d649a1542
- increased sort limit, now 3000 entries, before: 1000
this should cause that more results can be shown in case
of strong limitating constraints, like domain navigation
- enhanced the sort process
- check against domain navigator bugs
- fix in sort stack
- showing now all naviagtion pages at first search (not only next page)
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6569 6c8d7289-2bf4-0310-a012-ef5d649a1542
http://forum.yacy-websuche.de/viewtopic.php?p=15004#p15004
old index blobs where deletions have been made because of DHT transmission should be melted down to new blobs. This uses sixcoolers methods from the forum thread but modifies the process in such a way that the blobs are not merged with themselves but simply rewritten to smaller files.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6548 6c8d7289-2bf4-0310-a012-ef5d649a1542
- some refactoring in search process
- fixed image search for json and rss output
- search navigation on bottom of search result page in cases where there are more than 6 results on page
- fixes for number of displayed documents
- disabled pseudostemming
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6504 6c8d7289-2bf4-0310-a012-ef5d649a1542
- fixes for bad equals() methods that had not been used by hash maps and therefore some classes did not work as objects in hash maps.
- this may also affect some cases where double-checks should have been, but did not work.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6495 6c8d7289-2bf4-0310-a012-ef5d649a1542
memory.acceptDHT in kbytes
not yet pre-enabled, will clear on every startup
please review since this could break dht in freeworld
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6459 6c8d7289-2bf4-0310-a012-ef5d649a1542
- extended the OAI-PMH test applet and integrated it into the menu. Does still not import OAI-PMH records, but shows that it is able to read and parse this data
- some redesign in ZURL storage: refactoring of access methods, better concurrency, less synchronization
- added a limitation to the LURL metadata database table cache to 20 million entries: this cache was until now not limited and only limited by the available RAM which may have caused a memory-leak-like behavior.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6440 6c8d7289-2bf4-0310-a012-ef5d649a1542
- some documentation fixes
- adopted a default setting for the search window: moves css setting to base.css
- some enhancements for the DocumentIndex class
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6410 6c8d7289-2bf4-0310-a012-ef5d649a1542
orbiter