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| <h1>Web Tools Platform 1.0 M5 - XML Catalog changes</h1> |
| <p>As part of our ongoing efforts to support standards and establish APIs the XML Catalog has undergone some changes to comply more consistenly with the |
| <A href="http://www.oasis-open.org/committees/tc_home.php?wg_abbrev=entity" target="_self">OASIS XML Catalog</A> specification. These changes will |
| affect XML Catalog serialization format and XML Catalog plugin extension point format. These changes will also affect the XML Catalog model APIs. |
| <BR> |
| <BR>To make the transition to these new formats as painless as possible <b>we will support both 'old' and 'new' formats for the 'M5' release</b>. Post 'M5' |
| we will discontinue support for the 'old' formats. These changes are described in more detail below. |
| <BR><BR><H2>1) Extension points </H2> |
| <BR> |
| The catalog extension point was renamed from <B>catalogContributor</B> to <B>catalogContributions</B>. |
| As before, plugins can contribute separate entries to the default workspace catalog through |
| <B>org.eclipse.wst.xml.core.catalog.catalogContributions</B> extension point. |
| However <B>mappingInfo</B> element should not be used, instead, extension point |
| now supports |
| <B>system</B>, <B>public</B>, <B>uri</B> according to the OASIS XML |
| Catalog spec.<BR> |
| <BR> |
| Example of the new extension point:<TABLE |
| bgcolor="#eeeeee" width="100%" cellpadding="5" cellspacing="0" |
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| |
| <TR> |
| <TD><PRE> |
| <CODE> |
| <extension point="<B>org.eclipse.wst.xml.core.catalog.catalogContributions</B>"> |
| <catalogContribution id="default"> |
| |
| <uri |
| name="http://www.w3.org/2001/XMLSchema" |
| uri="platform:/plugin/org.eclipse.xsd/cache/www.w3.org/2001/XMLSchema.xsd"/> |
| <public |
| publicId="-//W3C//DTD XHTML 1.1//EN" |
| uri="dtds/xhtml11-flat.dtd" /> |
| |
| </catalogContribution> |
| </extension></CODE></PRE></TD> |
| |
| </TR> |
| |
| </TABLE> |
| <P> |
| Please note that <B>public</B> and <B>system</B> elements should be used to catalog DTD's by Public ID and System ID correspondingly, and <B>uri</B> element to catalog XML Schemas and other resourses (e.g. stylesheets). |
| <BR> |
| </P> |
| <P>Example of deprecated extension:<BR> |
| <BR>Please note that due to consolidation of plugins org.eclipse.wst.xml.catalog and org.eclipse.wst.xml.uriresolver with org.eclipse.wst.xml.core catalogContributor exetension point moved to org.eclipse.wst.xml.core plugin. |
| </P> |
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| <TD><PRE> |
| <CODE></CODE> <extension point="org.eclipse.wst.xml.core.catalogContributor"> |
| <catalogContributor catalogId="default"> |
| <mappingInfo type="system" key="http://www.w3.org/2001/XMLSchema" uri="platform:/plugin/org.eclipse.xsd/cache/www.w3.org/2001/XMLSchema.xsd"/> |
| <mappingInfo type="public" key="http://www.w3.org/1999/XSL/Transform" uri="data/xsd/XSLSchema.xsd"/> |
| </catalogContributor> |
| </extension></PRE></TD> |
| |
| </TR> |
| |
| </TABLE> |
| <H6 class="CaptionFigColumn" id="header"></H6> |
| <P>For the details see <B>org.eclipse.wst.xml.core.catalog.catalogContributions</B> the <A |
| href="catalogContributions.html" target="_self">extension point schema |
| documentation</A><BR> |
| |
| <BR> |
| <h2>2) XML Catalog preferences are serialized in OASIS XML Catalog format</h2> |
| <BR> |
| XML Catalog entires specified by the user in the peference page will now be serialzed using the OASIS format. |
| This will be noticable when 'user catalog entries' are 'exported' from the preferences page or users who know to |
| look in their .metadata directory to find the serialized XML Catalog prefences (in the org.eclipse.wst.xml.core |
| plugin's state location). <BR> |
| <BR> |
| <h2>3) Updated XML Catalog Provisional APIs</h2> |
| <BR> |
| The XML Catalog model's provisional APIs have been updated to more closely refelect the OASIS Catalog spec. |
| Provisional APIs for XML Catalog are in <B>org.eclipse.wst.xml.core </B>plugin, <B>org.eclipse.wst.xml.core.internal.catalog.provisional</B> package<BR><br/> |
| <h2>Future Directions</h2> |
| In the future we hope to provide more support some of the 'richer' contructs defined in the OASIS XML Catalog via |
| extension points and the UI. For example, support for the 'nextCatalog' entry will enable the reuse of existing OASIS catalogs |
| via the XML Catalog preferencs page (<a href="https://bugs.eclipse.org/bugs/show_bug.cgi?id=87465">bug 87465</a>). |
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