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| package org.apache.tapestry.pageload; |
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| import org.apache.hivemind.ClassResolver; |
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| import org.apache.tapestry.IEngine; |
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| import org.apache.tapestry.IPage; |
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| import org.apache.tapestry.IRequestCycle; |
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| import org.apache.tapestry.Tapestry; |
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| import org.apache.tapestry.engine.IMonitor; |
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| import org.apache.tapestry.engine.IPageLoader; |
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| import org.apache.tapestry.engine.IPageSource; |
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| import org.apache.tapestry.resolver.PageSpecificationResolver; |
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| import org.apache.tapestry.services.ObjectPool; |
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| import org.apache.tapestry.util.MultiKey; |
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| public class PageSource implements IPageSource |
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| { |
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| private ClassResolver _classResolver; |
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| private PageSpecificationResolver _pageSpecificationResolver; |
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| private IPageLoader _loader; |
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| private ObjectPool _pool; |
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| public ClassResolver getClassResolver()
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| { |
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| return _classResolver;
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| } |
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| protected MultiKey buildKey(IEngine engine, String pageName)
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| { |
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| Object[] keys;
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| keys = new Object[]
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| { pageName, engine.getLocale() }; |
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| return new MultiKey(keys, false);
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| } |
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| protected MultiKey buildKey(IPage page)
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| { |
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| Object[] keys;
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| keys = new Object[]
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| { page.getPageName(), page.getLocale() }; |
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| return new MultiKey(keys, false);
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| } |
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| public IPage getPage(IRequestCycle cycle, String pageName, IMonitor monitor)
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| { |
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| IEngine engine = cycle.getEngine();
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| Object key = buildKey(engine, pageName);
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| IPage result = (IPage) _pool.get(key);
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| if (result == null)
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| { |
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| monitor.pageCreateBegin(pageName);
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| _pageSpecificationResolver.resolve(cycle, pageName);
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| result = _loader.loadPage(
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| _pageSpecificationResolver.getSimplePageName(), |
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| _pageSpecificationResolver.getNamespace(), |
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| cycle, |
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| _pageSpecificationResolver.getSpecification()); |
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| monitor.pageCreateEnd(pageName);
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| } |
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| else |
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| { |
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| result.attach(engine, cycle);
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| } |
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| return result;
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| } |
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| public void releasePage(IPage page)
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| { |
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| Tapestry.clearMethodInvocations();
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| page.detach();
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| Tapestry.checkMethodInvocation(Tapestry.ABSTRACTPAGE_DETACH_METHOD_ID, "detach()", page);
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| _pool.store(buildKey(page), page);
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| } |
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| public void setPool(ObjectPool pool)
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| { |
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| _pool = pool;
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| } |
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| public void setClassResolver(ClassResolver resolver)
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| { |
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| _classResolver = resolver;
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| } |
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| public void setPageSpecificationResolver(PageSpecificationResolver resolver)
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| { |
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| _pageSpecificationResolver = resolver;
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| } |
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| public void setLoader(IPageLoader loader)
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| { |
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| _loader = loader;
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| } |
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| } |