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Posted to dev@commons.apache.org by "Holger Haag (JIRA)" <ji...@apache.org> on 2006/05/23 11:01:33 UTC
[jira] Updated: (BETWIXT-50) Versioning of XML Output
[ http://issues.apache.org/jira/browse/BETWIXT-50?page=all ]
Holger Haag updated BETWIXT-50:
-------------------------------
Attachment: betwixt-versioning-patch
src.zip
betwixt-versioning-patch: SVN Patch
src.zip: new files (e.g. test cases)
> Versioning of XML Output
> ------------------------
>
> Key: BETWIXT-50
> URL: http://issues.apache.org/jira/browse/BETWIXT-50
> Project: Commons Betwixt
> Type: Improvement
> Reporter: Holger Haag
> Attachments: betwixt-versioning-patch, src.zip
>
> Referring to the thread "Versioning of XML Output" (http://mail-archives.apache.org/mod_mbox/jakarta-commons-user/200605.mbox/%3c18841.1147350087@www031.gmx.net%3e) on the jakarta-commons-user mailing list, I'll provide here a SVN patch for the described problem.
> - Two new strategies: Attribute and Element suppression. Chose interfaces
> instead of abstract class so that one class (see test cases) can implement
> both.
> - After an element/attribute descriptor has been build completely (including
> the options), the suppression strategies are evaluated. If the
> element/attribute shall be suppressed, it is removed from the introspection
> results.
> - Important: use <addDefaults add-properties="false" /> ! Otherwise the
> effects of element/attribute suppression will be ... none.
> - Test cases for illustration
> === Code snippets + explanation == :
> * Added new Interfaces
>
> org.apache.commons.betwixt.strategy.AttributeSuppressionStrategy
>
> public boolean suppress(AttributeDescriptor descr);
>
>
> org.apache.commons.betwixt.strategy.ElementSuppressionStrategy
>
> public boolean suppress(ElementDescriptor descr);
>
>
> * Added setter/getter methods for such strategies in
> org.apache.commons.betwixt.IntrospectionConfiguration
> * org.apache.commons.betwixt.digester.ElementRule: Remove element descriptor
> if suppressed:
> ElementDescriptor descriptor = (ElementDescriptor)digester.pop();
>
> final Object peek = digester.peek();
>
> if(peek instanceof ElementDescriptor) {
> ElementDescriptor parent = (ElementDescriptor)digester.peek();
> // check for element suppression
> if(
> getXMLIntrospector().getConfiguration().getElementSuppressionStrategy().suppress(descriptor))
> {
> parent.removeElementDescriptor(descriptor);
> }
> }
> * org.apache.commons.betwixt.digester.AttributeRule: Remove attribute
> descrptor if suppressed:
> AttributeDescriptor descriptor =
> (AttributeDescriptor)digester.pop();
> ElementDescriptor parent = (ElementDescriptor)digester.peek();
> // check for attribute suppression
> if(
> getXMLIntrospector().getConfiguration().getAttributeSuppressionStrategy().suppress(descriptor))
> {
> parent.removeAttributeDescriptor(descriptor);
> }
> * ElementDescriptor: new methods:
> public void removeAttributeDescriptor(AttributeDescriptor descriptor) {
> getAttributeList().remove(descriptor);
> }
> public void removeElementDescriptor(ElementDescriptor descriptor) {
> getElementList().remove(descriptor);
> getContentList().remove(descriptor);
> }
>
> public AttributeDescriptor getAttributeDescriptor(final String name)
> {
> for (int i = 0, size = attributeDescriptors.length; i < size; i++)
> {
> AttributeDescriptor descr = attributeDescriptors[i];
> if (descr.getQualifiedName().equals(name)) {
> return descr;
> }
> }
>
> return null;
> }
> * Test cases: package org.apache.commons.betwixt.versioning
> VersioningStrategy implements both an element and versioning strategy
> VersioningTest well.. .test the versioning.
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