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Tika

Created by Peter May on Dec 09, 2011 · last edited by Andrew Jackson · on Jan 25, 2012 (view history) · 10 versions

Summary

Purpose Detects and extracts metadata and text content from documents.
Homepage
http://tika.apache.org/
Source Code Repository
https://github.com/apache/tika
License
Apache License, Version 2.0
Debian Package  

Description

Java based tool for detecting and extracting metadata and text content from documents.

User Experiences

e.g. links to AQuA/SCAPE/Hackathon issues that use the tool

News Feeds

Release Feed

Link to any RSS feed that is updated when new releases occur, if any, e.g:

Apache Tika
(The Apache Tika toolkit is an ASFv2 licensed open source tool for extracting information from digital documents. Tika allows search engines, content management systems and other applications that work with various kinds of digital documents to easily detect and extract metadata and content from all major file formats. )
Release of Apache Tika, version 1.0
Apache Tika 1.0

Activity Feed

Link to any RSS feed that is updated when issue or code updates occur, if any, e.g:

Activity Streams
<a href="https://issues.apache.org/jira/secure/ViewProfile.jspa?name=mikemccand" class="activity-item-user activity-item-author">Michael McCandless</a> commented on <a href="https://issues.apache.org/jira/browse/TIKA-1033">TIKA-1033 - Tika doesn&#39;t parse embedded OLE Chart/Graph objects</a>
<a href="https://issues.apache.org/jira/secure/ViewProfile.jspa?name=mikemccand" class="activity-item-user activity-item-author">Michael McCandless</a> commented on <a href="https://issues.apache.org/jira/browse/TIKA-1033">TIKA-1033 - Tika doesn&#39;t parse embedded OLE Chart/Graph objects</a>

Interesting: with PowerPoint 2007, when I double-click the embedded chart, it pops up a dialogue box saying "To edit this chart using the new features available in the 2007 Microsoft Office system, you must first convert it to the 2007 Office system

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<a href="https://issues.apache.org/jira/secure/ViewProfile.jspa?name=gagravarr" class="activity-item-user activity-item-author">Nick Burch</a> commented on <a href="https://issues.apache.org/jira/browse/TIKA-1033">TIKA-1033 - Tika doesn&#39;t parse embedded OLE Chart/Graph objects</a>

It looks like it's a special kind of excel file generated for holding the chart. If I open the ppt file in openoffice and double click on the chart it opens OOCalc, so that too thinks it's a kind of excel file. If you double click in your copy of

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<a href="https://issues.apache.org/jira/secure/ViewProfile.jspa?name=mikemccand" class="activity-item-user activity-item-author">Michael McCandless</a> commented on <a href="https://issues.apache.org/jira/browse/TIKA-1033">TIKA-1033 - Tika doesn&#39;t parse embedded OLE Chart/Graph objects</a>

The "raw chart object" looks to actually be an excel file,

Hmm, so now I'm very confused Did something go wrong when Tika pulled out the bits from emb.ppt to create 1.xls? When I try to open 1.xls in Excel it's unhappy ("Cannot open Microsoft

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<a href="https://issues.apache.org/jira/secure/ViewProfile.jspa?name=mikemccand" class="activity-item-user activity-item-author">Michael McCandless</a> commented on <a href="https://issues.apache.org/jira/browse/TIKA-1033">TIKA-1033 - Tika doesn&#39;t parse embedded OLE Chart/Graph objects</a>
<a href="https://issues.apache.org/jira/secure/ViewProfile.jspa?name=gagravarr" class="activity-item-user activity-item-author">Nick Burch</a> commented on <a href="https://issues.apache.org/jira/browse/TIKA-1033">TIKA-1033 - Tika doesn&#39;t parse embedded OLE Chart/Graph objects</a>

The "raw chart object" looks to actually be an excel file, running org.apache.poi.poifs.dev.POIFSLister against it gives:

Root Entry -
CompObj <(0x01)CompObj>
Workbook
Ole <(0x01)Ole>

So there's an excel workbook in there. POIFSViewer

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<a href="https://issues.apache.org/jira/secure/ViewProfile.jspa?name=mikemccand" class="activity-item-user activity-item-author">Michael McCandless</a> commented on <a href="https://issues.apache.org/jira/browse/TIKA-1033">TIKA-1033 - Tika doesn&#39;t parse embedded OLE Chart/Graph objects</a>

I think emb.ppt was explicitly created as a test case, but not by me ... I'll see if I can get the details.

OK I just ran the attached emb.ppt through the Microsoft Binary File Format Validator tool and it passed, but when I run it on 1.xls (which

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Searching for Tika on OPF Labs

Found 9 search result(s) for Tika.

Page: SO11 The Tika characterisation Tool (SCAPE)
... versioning, so further work is needed to add versions to other mimetypes. Can Tika be extended to support regexp like Fido? Prototype of Tika (https://github.com/openplanets/tika https://github.com/openplanets/tika) up and running that used regular expressions
Jun 14, 2012
Page: Extracting and aggregating metadata with Apache Tika (SPRUCE)
Extracting and aggregating metadata with Apache Tika Extracting and aggregating metadata with Tika At the Glasgow Mashup Peter May created a Python wrapper for Apache Tika. Carl Wilson extended this work, creating a Java utility class that wrapped Tika
Sep 28, 2012
Labels: spruce_london, solution, characterisation
Page: Tika Batch File Identification (SPRUCE)
... investigation and feedback to Apache Tika. \\ \ Some files are only identified as application/octetstream (Tika default).  Needs further investigation and feedback to Tika. \\ \ Some problems with character encoding of metadata returned by Tika causing issues when trying to load JSON output ...
Jun 13, 2012
Labels: spruce, spruce_glasgow, identification, solution
Page: Example - Working with Apache Tika (SCAPE)
... button) # Cloned the fork locally ($ git clone \recursive https://github.com/openplanets/tika) # cd into your local repository ($ cd tika) # Link with the upstream repository ($ git remote add upstream git://github.com/apache ... ...
Jan 24, 2012
Page: SO17 Web Archive Mime-Type detection workflow based on Droid and Apache Tika (SCAPE)
... Involved tools: \\ \\ unARC: \\ A tool (by SB) to unpack ARC files. \\ \\ TIFOWA (using the TIKA API): \\ TIFOWA (by ONB)  is using the TIKA API for extracting meta data from the files contained in an folder structure ...
Mar 01, 2012
Labels: identification, solution
Page: Nexus Characterisation - STFC (SPRUCE)
... Detailed description There are a lot of tools available for characterisation. There are native NeXus tools, Apache Tika and Jhove2. As Nexus is a scientific data format, the issue here is which one of these tools ...
Sep 19, 2012
Labels: spruce_london, issue, conformance
Page: Characterising Externally Generated Content (AQuA)
... description Java code, currently runs as a command line application.  Uses Apache Tika to obtain the content type (mime type) of the file. \\ Tika also gathers other metadata, dependent upon the file format, such as word count ...
May 16, 2012
Labels: fixity, aqua, solution, characterisation, appraisal_assessment
Page: WCT4 Web Archive Mime-Type detection at Austrian National Library (SCAPE)
WCT4 Web Archive MimeType detection at Austrian National Library Collection: Issue: Solutions
Jan 20, 2012
Labels: scenario
Page: WCT3 Characterise web content in ARC and WARC containers at State and University Library Denmark (SCAPE)
WCT3 Characterise web content in ARC and WARC containers at State and University Library Denmark Collection: Issue: Solutions
Mar 13, 2012