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https://issues.apache.org/jira/browse/TAPESTRY-2060?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12560400#action_12560400
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Andreas Andreou commented on TAPESTRY-2060:
-------------------------------------------
This can be done easily in 4.1.4-SNAPSHOT, see:
http://tapestry.apache.org/tapestry4.1/ajax/beyonddojo.html
You can replace all js files tapestry uses from that simple configuration point.
> ExternalAsset bugs
> ------------------
>
> Key: TAPESTRY-2060
> URL: https://issues.apache.org/jira/browse/TAPESTRY-2060
> Project: Tapestry
> Issue Type: Bug
> Affects Versions: 4.1.3
> Reporter: sorphi
>
> When i prepared to hack asset "clientValidationScript" in form.jwc from
> "classpath:/dojo-0.4.3/dojo3.js" to "/mypath/dojo-0.4.3/dojo3.js" for some
> reasons (main is that i hate private assets,:-))))
> error happend:
> java.lang.NullPointerException
> Stack Trace:
> *
> $AssetFactory_1178ab8d243._getStrategy(Ljava/lang/Object;)Lorg/apache/tapestry/asset/AssetFactory;($AssetFactory_1178ab8d243.java:???)
> *
> $AssetFactory_1178ab8d243.createAsset(Lorg/apache/hivemind/Resource;Lorg/apache/hivemind/Location;)Lorg/apache/tapestry/IAsset;($AssetFactory_1178ab8d243.java:???)
> *
> $AssetFactory_1178ab8d094.createAsset(Lorg/apache/hivemind/Resource;Lorg/apache/hivemind/Location;)Lorg/apache/tapestry/IAsset;($AssetFactory_1178ab8d094.java:???)
> *
> org.apache.tapestry.util.PageRenderSupportImpl.writeExternalScripts(Lorg/apache/tapestry/IMarkupWriter;Lorg/apache/tapestry/IRequestCycle;)V(PageRenderSupportImpl.java:291)
> *
> org.apache.tapestry.util.PageRenderSupportImpl.writeBodyScript(Lorg/apache/tapestry/IMarkupWriter;Lorg/apache/tapestry/IRequestCycle;)V(PageRenderSupportImpl.java:320)
> *
> org.apache.tapestry.services.impl.DefaultResponseBuilder.writeBodyScript(Lorg/apache/tapestry/IMarkupWriter;Lorg/apache/tapestry/IRequestCycle;)V(DefaultResponseBuilder.java:349)
> *
> $ResponseBuilder_1178ab8d204.writeBodyScript(Lorg/apache/tapestry/IMarkupWriter;Lorg/apache/tapestry/IRequestCycle;)V($ResponseBuilder_1178ab8d204.java:???)
> *
> $ResponseBuilder_1178ab8d0a6.writeBodyScript(Lorg/apache/tapestry/IMarkupWriter;Lorg/apache/tapestry/IRequestCycle;)V($ResponseBuilder_1178ab8d0a6.java:???)
> *
> org.apache.tapestry.html.Body.renderComponent(Lorg/apache/tapestry/IMarkupWriter;Lorg/apache/tapestry/IRequestCycle;)V(Body.java:62)
> *
> org.apache.tapestry.AbstractComponent.render(Lorg/apache/tapestry/IMarkupWriter;Lorg/apache/tapestry/IRequestCycle;)V(AbstractComponent.java:725)
> *
> org.apache.tapestry.services.impl.DefaultResponseBuilder.render(Lorg/apache/tapestry/IMarkupWriter;Lorg/apache/tapestry/IRender;Lorg/apache/tapestry/IRequestCycle;)V(DefaultResponseBuilder.java:179)
> *
> org.apache.tapestry.AbstractComponent.renderBody(Lorg/apache/tapestry/IMarkupWriter;Lorg/apache/tapestry/IRequestCycle;)V(AbstractComponent.java:539)
> *
> org.apache.tapestry.html.Shell.renderComponent(Lorg/apache/tapestry/IMarkupWriter;Lorg/apache/tapestry/IRequestCycle;)V(Shell.java:124)
> *
> org.apache.tapestry.AbstractComponent.render(Lorg/apache/tapestry/IMarkupWriter;Lorg/apache/tapestry/IRequestCycle;)V(AbstractComponent.java:725)
> *
> org.apache.tapestry.services.impl.DefaultResponseBuilder.render(Lorg/apache/tapestry/IMarkupWriter;Lorg/apache/tapestry/IRender;Lorg/apache/tapestry/IRequestCycle;)V(DefaultResponseBuilder.java:179)
> *
> org.apache.tapestry.BaseComponent.renderComponent(Lorg/apache/tapestry/IMarkupWriter;Lorg/apache/tapestry/IRequestCycle;)V(BaseComponent.java:107)
> *
> org.apache.tapestry.AbstractComponent.render(Lorg/apache/tapestry/IMarkupWriter;Lorg/apache/tapestry/IRequestCycle;)V(AbstractComponent.java:725)
> *
> org.apache.tapestry.services.impl.DefaultResponseBuilder.render(Lorg/apache/tapestry/IMarkupWriter;Lorg/apache/tapestry/IRender;Lorg/apache/tapestry/IRequestCycle;)V(DefaultResponseBuilder.java:179)
> *
> org.apache.tapestry.BaseComponent.renderComponent(Lorg/apache/tapestry/IMarkupWriter;Lorg/apache/tapestry/IRequestCycle;)V(BaseComponent.java:107)
> *
> org.apache.tapestry.AbstractComponent.render(Lorg/apache/tapestry/IMarkupWriter;Lorg/apache/tapestry/IRequestCycle;)V(AbstractComponent.java:725)
> *
> org.apache.tapestry.services.impl.DefaultResponseBuilder.render(Lorg/apache/tapestry/IMarkupWriter;Lorg/apache/tapestry/IRender;Lorg/apache/tapestry/IRequestCycle;)V(DefaultResponseBuilder.java:177)
> *
> org.apache.tapestry.AbstractPage.renderPage(Lorg/apache/tapestry/services/ResponseBuilder;Lorg/apache/tapestry/IRequestCycle;)V(AbstractPage.java:249)
> .....
> In org.apache.tapestry.form.FormSupportImpl.java , line 568-573
> IAsset clientScript = _form.getAsset("clientValidationScript");
> if (clientScript != null)
> {
> _pageRenderSupport.addExternalScript(_form,
> clientScript.getResourceLocation());
> }
> before hacking, clientScript is PrivateAsset. now in my case, is an
> ExternalAsset instance.
> here clientScript.getResourceLocation() returns always null, because
> ExternalAsset 's constructor: (ExternalAsset .java line 36-41)
> public ExternalAsset(String URL, Location location)
> {
> super(null, location);
> _url = URL;
> }
> So _pageRenderSupport.addExternalScript(_form, null), and so, in
> org.apache.tapestry.util.PageRenderSupportImpl.java line 289-291:
> Resource scriptLocation = (Resource) _externalScripts.get(i);
> IAsset asset = _assetFactory.createAsset(scriptLocation, null);
> will throw a NPE in enhanced AssetFactory because null scriptLocationResource
> can't match a strategy.
> I think in constructor of ExternalAsset , let resourceLocation null is
> arbitrary. should change to :
> super(new ExternalResource(URL, null), location);
> And add another construtor to corresponse creation in
> org.apache.tapestry.asset.DefaultAssetFactory (line 55-58):
> public IAsset createAsset(Resource resource, Location location)
> {
> return new ExternalAsset(resource.getPath(), location); // can
> change to new ExternalAsset(resource, location) if that.
> }
> After all, let me pass a user defind asset to Form.jwc like as Shell.jwc is a
> better way. :-))
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