JHOVE (Harvard Object Validation Environment)

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JHOVE (Harvard Object Validation Environment)
JHOVE provides functions to perform format-specific identification, validation, and characterization of digital objects.
License:GNU Lesser General Public License (LGPL)
Platforms:JHOVE should be usable on any UNIX, Windows, or OS X platform with an appropriate J2SE installation. It should run on any operating system that supports Java 1.5 and has a directory-based file system.


[edit] Description

JHOVE allows data curators to verify the file formats of the digital objects in their repositories. The analysis consists of three functions: identification, which determines the object’s format; validation, which checks whether the object conforms to its format’s technical norms; and characterization, which gives a report of the object’s salient properties. Detailed information can be found in the DCC JHOVE Case Study.

[edit] Provider

Open Preservation Foundation

[edit] Licensing and cost

GNU Lesser General Public License – free.

[edit] Platform and interoperability

JHOVE is implemented using Java 2 Standard Edition 5.0 (JDK 1.5). It was designed incorporating an API, which can be used on its own to create compatible tools and applications. Developers wishing to recompile the JHOVE source code will require Apache Ant.

[edit] Functional notes

JHOVE includes modules for the following 12 format types: AIFF; ASCII encoded text; GIF; HTML; JPEG; JPEG2000; PDF; TIFF; UTF-8 encoded text; WAVE; XML; and arbitrary bytestreams. Three of these formats (AIFF, GIF and JPEG) will not be supported by JHOVE2, while a further two (JPEG2000 and PDF) are not currently supported by JHOVE2 but may be in future. HTML is not directly supported by JHOVE2 but can be processed either as SGML or XML. A number of limitations have come to light since JHOVE was first released, many of which are addressed with the JHOVE2 project. Currently, identification and validation are linked, with successful identification dependent on the validation process.  This means that any trivial error in the validation process can result in an object failing to be identified. In addition, JHOVE cannot analyze objects that are comprised of multiple file formats. Developers have also remarked that working with the API is difficult.

[edit] Documentation and user support

The JHOVE website includes an excellent introduction and tutorial. It also provides detailed specifications for its modules. The SourceForge code repository includes a forum, which seems to be used only sporadically. It also hosts a mailing list and the usual facilities for filing bug reports, feature requests and support requests.

[edit] Usability

While installation and configuration can be complex, the Swing-based GUI allows for relatively easy use. JHOVE can also be invoked with a command-line interface.

[edit] Expertise required

Installation requires solid knowledge of command line interfaces and experience with manually editing configuration files. Familiarity with metadata outputs is also essential.

[edit] Standards compliance

JHOVE was designed to integrate into the Ingest function of an OAIS. The validation process compares objects’ formats against ISO standards.

[edit] Influence and take-up

The SourceForge website reports approximately 11,400 downloads from the release of JHOVE 1.1 from 2008 to July 2013. Use of JHOVE is widespread in the digital preservation community. JHOVE is integrated within the Planets Testbed and Plato.

[edit] User Experiences

[edit] Development Activity

While much of its development effort has been diverted to JHOVE2, JHOVE is still actively maintained and developed by the OPF [1] as it supports some common formats that JHOVE2 does not.

All development activity is visible on GitHub: http://github.com/openpreserve/jhove/commits

[edit] Release Feed

Below the last 3 release feeds:

2017-07-20 23:51:39
[tag:github.com,2008:Repository/17627031/v1.16.7 JHOVE 1.16.7 Hot Fix]
by carlwilson
2017-05-23 12:11:10
[tag:github.com,2008:Repository/17627031/d1.17.27 d1.17.27]
by opf-buildmanager
2017-05-10 16:53:04
[tag:github.com,2008:Repository/17627031/d1.17.25 d1.17.25]
by opf-buildmanager

[edit] Activity Feed

Below the last 5 activity feeds:

2017-04-26 13:12:05
[tag:github.com,2008:Grit::Commit/73d0d134dee77b34d7d448a76486d5f7345da448 Merge pull request #222 from openpreserve/release-1.16]
by carlwilson https://github.com/carlwilson
2017-03-20 15:12:38
[tag:github.com,2008:Grit::Commit/ce07a7992c0fd233e32b502e4698aab85ada01c6 Merge pull request #198 from openpreserve/test-wav-files]
by carlwilson https://github.com/carlwilson
2017-03-20 14:54:59
[tag:github.com,2008:Grit::Commit/8baaccd4580c079b22bd6c1ff77f41b214603dc5 FIX - 1.16 baseline]
by carlwilson https://github.com/carlwilson
2017-03-20 14:33:42
[tag:github.com,2008:Grit::Commit/007a1f6fe002777a6f6f1b10d3916c86be2d4544 Merge branch 'skip-bytes-fix' of https://github.com/bl-dpt/jhove into…]
by carlwilson https://github.com/carlwilson
2017-03-20 14:22:23
[tag:github.com,2008:Grit::Commit/a290b353c526f0a1e17760a35a0d89985ee52318 TEST - WAV files to example test set]
by carlwilson https://github.com/carlwilson


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