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package org.apache.tapestry.engine; |
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import org.apache.commons.fileupload.RequestContext; |
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import org.apache.commons.logging.Log; |
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import org.apache.commons.logging.LogFactory; |
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import org.apache.hivemind.ApplicationRuntimeException; |
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import org.apache.hivemind.ErrorLog; |
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import org.apache.hivemind.impl.ErrorLogImpl; |
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import org.apache.hivemind.util.Defense; |
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import org.apache.hivemind.util.ToStringBuilder; |
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import org.apache.tapestry.*; |
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import org.apache.tapestry.record.PageRecorderImpl; |
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import org.apache.tapestry.record.PropertyPersistenceStrategySource; |
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import org.apache.tapestry.services.AbsoluteURLBuilder; |
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import org.apache.tapestry.services.Infrastructure; |
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import org.apache.tapestry.services.ResponseBuilder; |
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import org.apache.tapestry.services.ServiceConstants; |
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import org.apache.tapestry.util.IdAllocator; |
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import org.apache.tapestry.util.QueryParameterMap; |
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import org.apache.tapestry.util.io.CompressedDataEncoder; |
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import java.util.HashMap; |
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import java.util.Iterator; |
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import java.util.Map; |
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import java.util.Stack; |
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public class RequestCycle implements IRequestCycle |
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{ |
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private static final Log LOG = LogFactory.getLog(RequestCycle.class); |
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protected ResponseBuilder _responseBuilder; |
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private IPage _page; |
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private IEngine _engine; |
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private String _serviceName; |
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private PropertyPersistenceStrategySource _strategySource; |
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private IPageSource _pageSource; |
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private Infrastructure _infrastructure; |
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private QueryParameterMap _parameters; |
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private AbsoluteURLBuilder _absoluteURLBuilder; |
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private Map _loadedPages; |
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private Map _pageRecorders; |
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private boolean _rewinding = false; |
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private Map _attributes = new HashMap(); |
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private int _targetActionId; |
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private IComponent _targetComponent; |
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private Object[] _listenerParameters; |
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private ErrorLog _log; |
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private IdAllocator _idAllocator = new IdAllocator(); |
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private Stack _renderStack = new Stack(); |
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private boolean _focusDisabled = false; |
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public RequestCycle(IEngine engine, QueryParameterMap parameters, String serviceName, |
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RequestCycleEnvironment environment) |
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{ |
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_engine = engine; |
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_parameters = parameters; |
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_serviceName = serviceName; |
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_infrastructure = environment.getInfrastructure(); |
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_pageSource = _infrastructure.getPageSource(); |
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_strategySource = environment.getStrategySource(); |
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_absoluteURLBuilder = environment.getAbsoluteURLBuilder(); |
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_log = new ErrorLogImpl(environment.getErrorHandler(), LOG); |
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} |
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public RequestCycle() |
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{ |
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} |
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public void cleanup() |
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{ |
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if (_loadedPages == null) |
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return; |
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Iterator i = _loadedPages.values().iterator(); |
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while (i.hasNext()) |
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{ |
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IPage page = (IPage) i.next(); |
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_pageSource.releasePage(page); |
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} |
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_loadedPages = null; |
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_pageRecorders = null; |
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_renderStack.clear(); |
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} |
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public IEngineService getService() |
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{ |
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return _infrastructure.getServiceMap().getService(_serviceName); |
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} |
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public String encodeURL(String URL) |
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{ |
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return _infrastructure.getResponse().encodeURL(URL); |
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} |
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public IEngine getEngine() |
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{ |
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return _engine; |
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} |
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public Object getAttribute(String name) |
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{ |
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return _attributes.get(name); |
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} |
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public IPage getPage() |
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{ |
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return _page; |
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} |
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public IPage getPage(String name) |
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{ |
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Defense.notNull(name, "name"); |
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IPage result = null; |
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if (_loadedPages != null) |
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result = (IPage) _loadedPages.get(name); |
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if (result == null) |
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{ |
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result = loadPage(name); |
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if (_loadedPages == null) |
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_loadedPages = new HashMap(); |
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_loadedPages.put(name, result); |
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} |
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return result; |
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} |
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private IPage loadPage(String name) |
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{ |
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IPage result = _pageSource.getPage(this, name); |
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IPageRecorder recorder = getPageRecorder(name); |
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recorder.rollback(result); |
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result.setChangeObserver(recorder); |
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result.firePageAttached(); |
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return result; |
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} |
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protected IPageRecorder getPageRecorder(String name) |
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{ |
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if (_pageRecorders == null) |
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_pageRecorders = new HashMap(); |
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IPageRecorder result = (IPageRecorder) _pageRecorders.get(name); |
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if (result == null) |
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{ |
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result = new PageRecorderImpl(name, _strategySource, _log); |
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_pageRecorders.put(name, result); |
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} |
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return result; |
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} |
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public void setResponseBuilder(ResponseBuilder builder) |
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{ |
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_responseBuilder = builder; |
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} |
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public ResponseBuilder getResponseBuilder() |
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{ |
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return _responseBuilder; |
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} |
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public boolean renderStackEmpty() |
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{ |
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return _renderStack.isEmpty(); |
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} |
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public IRender renderStackPeek() |
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{ |
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if (_renderStack.size() < 1) |
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return null; |
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return (IRender)_renderStack.peek(); |
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} |
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public IRender renderStackPop() |
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{ |
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if (_renderStack.size() == 0) |
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return null; |
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return (IRender)_renderStack.pop(); |
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} |
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public IRender renderStackPush(IRender render) |
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{ |
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if (_renderStack.size() > 0 && _renderStack.peek() == render) |
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return render; |
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return (IRender)_renderStack.push(render); |
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} |
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public int renderStackSearch(IRender render) |
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{ |
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return _renderStack.search(render); |
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} |
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public Iterator renderStackIterator() |
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{ |
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return _renderStack.iterator(); |
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} |
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public boolean isRewinding() |
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{ |
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return _rewinding; |
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} |
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public boolean isRewound(IComponent component) |
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{ |
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if (!_rewinding) |
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return false; |
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if (component == _targetComponent) |
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return true; |
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throw new StaleLinkException(component, Integer.toHexString(_targetActionId), _targetComponent.getExtendedId()); |
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} |
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public void removeAttribute(String name) |
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{ |
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if (LOG.isDebugEnabled()) |
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LOG.debug("Removing attribute " + name); |
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_attributes.remove(name); |
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} |
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public void renderPage(ResponseBuilder builder) |
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{ |
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_rewinding = false; |
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preallocateReservedIds(); |
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try |
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{ |
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_page.renderPage(builder, this); |
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} |
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catch (ApplicationRuntimeException ex) |
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{ |
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throw ex; |
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} |
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catch (Throwable ex) |
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{ |
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throw new ApplicationRuntimeException(ex.getMessage(), _page, null, ex); |
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} |
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finally |
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{ |
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reset(); |
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} |
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421 |
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} |
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private void preallocateReservedIds() |
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{ |
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for (int i = 0; i < ServiceConstants.RESERVED_IDS.length; i++) |
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{ |
432 |
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_idAllocator.allocateId(ServiceConstants.RESERVED_IDS[i]); |
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} |
434 |
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} |
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private void reset() |
441 |
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{ |
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_attributes.clear(); |
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_idAllocator.clear(); |
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} |
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public void rewindForm(IForm form) |
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{ |
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IPage page = form.getPage(); |
461 |
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_rewinding = true; |
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_targetComponent = form; |
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try |
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{ |
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page.beginPageRender(); |
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form.rewind(NullWriter.getSharedInstance(), this); |
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throw new StaleLinkException(Tapestry.format("RequestCycle.form-rewind-failure", form.getExtendedId()), form); |
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} |
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catch (RenderRewoundException ex) |
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{ |
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} |
480 |
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catch (ApplicationRuntimeException ex) |
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{ |
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throw ex; |
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} |
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catch (Throwable ex) |
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{ |
487 |
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488 |
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throw new ApplicationRuntimeException(ex.getMessage(), page, null, ex); |
491 |
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} |
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finally |
493 |
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{ |
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page.endPageRender(); |
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|
496 |
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reset(); |
497 |
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_rewinding = false; |
498 |
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} |
499 |
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} |
500 |
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501 |
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502 |
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public void disableFocus() |
505 |
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{ |
506 |
0 |
_focusDisabled = true; |
507 |
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} |
508 |
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510 |
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512 |
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public boolean isFocusDisabled() |
513 |
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{ |
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return _focusDisabled; |
515 |
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} |
516 |
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517 |
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public void setAttribute(String name, Object value) |
518 |
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{ |
519 |
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if (LOG.isDebugEnabled()) |
520 |
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LOG.debug("Set attribute " + name + " to " + value); |
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522 |
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_attributes.put(name, value); |
523 |
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} |
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public void commitPageChanges() |
531 |
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{ |
532 |
0 |
if (LOG.isDebugEnabled()) |
533 |
0 |
LOG.debug("Committing page changes"); |
534 |
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|
535 |
0 |
if (_pageRecorders == null || _pageRecorders.isEmpty()) |
536 |
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return; |
537 |
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|
538 |
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Iterator i = _pageRecorders.values().iterator(); |
539 |
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|
540 |
0 |
while (i.hasNext()) |
541 |
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{ |
542 |
0 |
IPageRecorder recorder = (IPageRecorder) i.next(); |
543 |
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|
544 |
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recorder.commit(); |
545 |
0 |
} |
546 |
0 |
} |
547 |
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548 |
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549 |
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550 |
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public void discardPage(String name) |
555 |
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{ |
556 |
0 |
forgetPage(name); |
557 |
0 |
} |
558 |
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|
559 |
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|
560 |
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public Object[] getListenerParameters() |
561 |
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{ |
562 |
0 |
return _listenerParameters; |
563 |
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} |
564 |
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|
565 |
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|
566 |
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public void setListenerParameters(Object[] parameters) |
567 |
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{ |
568 |
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_listenerParameters = parameters; |
569 |
0 |
} |
570 |
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|
571 |
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|
572 |
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|
573 |
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public void activate(String name) |
574 |
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{ |
575 |
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IPage page = getPage(name); |
576 |
|
|
577 |
0 |
activate(page); |
578 |
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} |
579 |
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|
580 |
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|
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|
582 |
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public void activate(IPage page) |
583 |
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{ |
584 |
0 |
Defense.notNull(page, "page"); |
585 |
|
|
586 |
0 |
if (LOG.isDebugEnabled()) |
587 |
0 |
LOG.debug("Activating page " + page); |
588 |
|
|
589 |
0 |
Tapestry.clearMethodInvocations(); |
590 |
|
|
591 |
0 |
page.validate(this); |
592 |
|
|
593 |
0 |
Tapestry.checkMethodInvocation(Tapestry.ABSTRACTPAGE_VALIDATE_METHOD_ID, "validate()", page); |
594 |
|
|
595 |
0 |
_page = page; |
596 |
0 |
} |
597 |
|
|
598 |
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|
599 |
|
public String getParameter(String name) |
600 |
|
{ |
601 |
0 |
return _parameters.getParameterValue(name); |
602 |
|
} |
603 |
|
|
604 |
|
|
605 |
|
public String[] getParameters(String name) |
606 |
|
{ |
607 |
0 |
return _parameters.getParameterValues(name); |
608 |
|
} |
609 |
|
|
610 |
|
|
611 |
|
|
612 |
|
|
613 |
|
public String toString() |
614 |
|
{ |
615 |
0 |
ToStringBuilder b = new ToStringBuilder(this); |
616 |
|
|
617 |
0 |
b.append("rewinding", _rewinding); |
618 |
0 |
b.append("serviceName", _serviceName); |
619 |
0 |
b.append("serviceParameters", _listenerParameters); |
620 |
|
|
621 |
0 |
if (_loadedPages != null) |
622 |
0 |
b.append("loadedPages", _loadedPages.keySet()); |
623 |
|
|
624 |
0 |
b.append("attributes", _attributes); |
625 |
0 |
b.append("targetActionId", _targetActionId); |
626 |
0 |
b.append("targetComponent", _targetComponent); |
627 |
|
|
628 |
0 |
return b.toString(); |
629 |
|
} |
630 |
|
|
631 |
|
|
632 |
|
|
633 |
|
public String getAbsoluteURL(String partialURL) |
634 |
|
{ |
635 |
0 |
String contextPath = _infrastructure.getRequest().getContextPath(); |
636 |
|
|
637 |
0 |
return _absoluteURLBuilder.constructURL(contextPath + partialURL); |
638 |
|
} |
639 |
|
|
640 |
|
|
641 |
|
|
642 |
|
public void forgetPage(String pageName) |
643 |
|
{ |
644 |
1 |
Defense.notNull(pageName, "pageName"); |
645 |
|
|
646 |
1 |
_strategySource.discardAllStoredChanged(pageName); |
647 |
1 |
} |
648 |
|
|
649 |
|
|
650 |
|
|
651 |
|
public Infrastructure getInfrastructure() |
652 |
|
{ |
653 |
1 |
return _infrastructure; |
654 |
|
} |
655 |
|
|
656 |
|
|
657 |
|
|
658 |
|
public String getUniqueId(String baseId) |
659 |
|
{ |
660 |
0 |
return _idAllocator.allocateId(baseId); |
661 |
|
} |
662 |
|
|
663 |
|
|
664 |
|
|
665 |
|
public String peekUniqueId(String baseId) |
666 |
|
{ |
667 |
0 |
return _idAllocator.peekNextId(baseId); |
668 |
|
} |
669 |
|
|
670 |
|
|
671 |
|
public void sendRedirect(String URL) |
672 |
|
{ |
673 |
1 |
throw new RedirectException(URL); |
674 |
|
} |
675 |
|
|
676 |
|
public String encodeIdState() |
677 |
|
{ |
678 |
0 |
return CompressedDataEncoder.encodeString(_idAllocator.toExternalString()); |
679 |
|
} |
680 |
|
|
681 |
|
public void initializeIdState(String encodedSeed) |
682 |
|
{ |
683 |
0 |
_idAllocator = IdAllocator.fromExternalString( CompressedDataEncoder.decodeString(encodedSeed)); |
684 |
0 |
} |
685 |
|
} |