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#
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# '$RCSfile$'
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# '$Author$'
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# '$Revision$'
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# '$Date$'
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#
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Metacat: XML Metadata Database
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------------------------------
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Version: 1.2.0 Release
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Send feedback and bugs to: metacat-dev@ecoinformatics.org
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http://bugzilla.ecoinformatics.org
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Contributors: Matt Jones (jones@nceas.ucsb.edu)
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Chad Berkley (berkley@nceas.ucsb.edu)
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Jing Tao (tao@nceas.ucsb.edu)
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Jivka Bojilova (bojilova@nceas.ucsb.edu)
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Dan Higgins (higgins@nceas.ucsb.edu)
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Metacat is a flexible database storage system for XML formatted
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documents. Metacat models the structure of the XML document, therefore
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allowing storage of XML documents with arbitrary schemas. Metacat supports
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several databases on the back-end, including Oracle, PostgreSQL and SQL
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Server. The server supports XML document storage, retrievel, query,
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validation, and transformation (using the XSLT stylesheet language).
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In addition, there is a mechanism for replicating the database
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to other metacat instances for backup and load balancing purposes.
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Metacat currently uses an LDAP database for authenticating users, but
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was written to accomodate other authentication services as well.
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Release Notes
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In this release, the structure of the xml_replication table was changed.
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If you try to update a previously installed Metacat, you should run a script
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file to updated the table structure before installation.
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For Oracle user: At the SQLPLUS prompt type the following -
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@src/xmlreplicationtable.sql
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For Postgresql user: At install directory prompt type the following -
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psql exp < src/xmlreplicationtable_postgres.sql
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(where 'exp' is the database name).
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If you are a new Metacat user, this step is unneeded.
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The build.xml file now has a property named datafilepath. It should be set
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to the location of where you want your data files stored. The data directory
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needs to be writeable by whatever user is running tomcat. If you are an
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existing user, the data directory is now /<tomcatdir>/webapps/metacat/data
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where <tomcatdir> is the your tomcat installation directory where
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your webapps directory is located and 'metacat' is the name of your servlet
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instance. If you leave your data directory where it currently is, your
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data files are web accessible. If you do not want your data files to be
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web accessible, move the data directory somewhere outside of your
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webapps directory and change the datafilepath property in the
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build.xml file and reinstall metacat. Note that if you have existing data
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files, they need to be moved to the new directory. For more information
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see bug 478.
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-------------
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New features in 1.2.0:
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1) Performance improvements through improved access control handling
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2) New replication features
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3) Added partial SSL support
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4) Additional bugs fixed, see http://bugzilla.ecoinformatics.org
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474 Metacat in Ecoinfo hang
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475 Associate access doc to some docid which doesn't have ent...
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478 Security hole in Metacat for data file.
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536 Changes to Metacat build script to install stylesheets fr...
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457 Bug in replciation
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466 Create a JUnit class for Metacat action
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502 Security issues in replication
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503 Access control problem to a replicated doucment
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537 SQL error when first insert a new record into xml_replication...
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540 In force replication, some time has reversion number error
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541 Update dataset document which host is not in this metacat...
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542 Duplicate entries in xml_replication table
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543 Metacat hang in there when delta T replication
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554 xml_replication table in production metacat
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479 Debug message level
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New features in 1.1.0:
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1) Added functionality to export a zipped data package. The zip file contains
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all of the data and metadata as well as a rendered html summary of
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the metadata.
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2) Changed version control mechanism. Metacat can now accept any version of
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a document as long as the given version number is greater than the
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current one. The new version number does not have to be exactly one
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greater than the current version.
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3) Update xerces.jar file to version 1.4.4
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Fixes in 1.1.0
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1) Fixed ldap authentication bug. Now, a user from a referred server cannot
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login with an incorrect password.
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2) Changed the default behavior of the access control functionality with
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respect to packaging.
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If a member document in a data package doesn't have an access control list,
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access control rules of the main package document will not apply to the
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member document. Previously, package members, by default, inherited
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the access control rules of the main package document.
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3) Fixed minor bugs with document access control.
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4) Allowed new version of data files to be uploaded and handled.
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5) Fixed bug where the client could not get the principals or groups from
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the ldap server.
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Fixes in 1.0.3
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1) Fixed problem with Metacat not being able to query for group names when
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and LDAP referral server was down. Added an LDAP timeout of 5 seconds
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for all referral activity.
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2) Fixed problem where invalid xml characters such as ampersands (&) could
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be inserted into the resultset xml stream.
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Fixes in 1.0.2
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1) Fixed problem with LDAP locking up Metacat when a referral server
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was not available.
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Fixes in 1.0.1
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1) Fixed problem with authenticating using LDAP referrals
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2) Fixed bug that prevent groups from being used in access documents
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Installation
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------------
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See the file "docs/user/metacatinstall.html" for detailed instructions.
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Documentation
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-------------
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See the docs directory for detailed documentation and installation
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instructions.
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Details of the Metacat architecture can be found on the website for
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the Knowledge Network for Biocomplexity (KNB):
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http://knb.ecoinformatics.org/software/metacat/
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Contributions to this work are welcome. Please see the above web site
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for details on how to contribute.
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Major Known Bugs or Feature Requests (see http://bugzilla.ecoinformatics.org)
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-----------------------------------------------------------------------------
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If you discover a bug
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please report it, either by email (above) or by using our bug tracking
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system (http://bugzilla.ecoinformatics.org). There is a list of currently
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unimplemented features in Bugzilla that we are working on for the next
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release (no, we don't have a date yet!).
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Legalese
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--------
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This software is copyrighted by The Regents of the University of California
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and the National Center for Ecological Analysis and Synthesis
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and licensed under the GNU GPL; see the 'LICENSE' file for
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details.
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This material is based upon work supported by the
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National Science Foundation under Grant No. DEB99-80154 and DBI99-04777.
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Any opinions, findings and conclusions or recomendations expressed in this
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material are those of the author(s) and do not necessarily reflect
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the views of the National Science Foundation (NSF).
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This product includes software developed by the Apache Software
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Foundation (http://www.apache.org/). See the LICENSE file in lib/apache
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for details.
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The source code, object code, and documentation in the com.oreilly.servlet
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package is copyright and owned by Jason Hunter. See the cos-license.html file
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for details of the license. Licensor retains title to and ownership of the
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Software and all enhancements, modifications, and updates to the Software.
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