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package org.apache.tapestry.services.impl; |
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import org.apache.commons.codec.net.URLCodec; |
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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.order.Orderer; |
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import org.apache.hivemind.util.Defense; |
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import org.apache.tapestry.IEngine; |
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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.*; |
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import org.apache.tapestry.record.PropertyPersistenceStrategySource; |
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import org.apache.tapestry.services.DataSqueezer; |
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import org.apache.tapestry.services.LinkFactory; |
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import org.apache.tapestry.services.ServiceConstants; |
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import org.apache.tapestry.util.QueryParameterMap; |
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import org.apache.tapestry.web.WebRequest; |
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import java.util.Iterator; |
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import java.util.List; |
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import java.util.Map; |
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public class LinkFactoryImpl implements LinkFactory |
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{ |
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protected URLCodec _codec = new URLCodec(); |
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protected PropertyPersistenceStrategySource _persistenceStrategySource; |
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protected IRequestCycle _requestCycle; |
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protected WebRequest _request; |
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private DataSqueezer _dataSqueezer; |
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private ErrorLog _errorLog; |
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private List _contributions; |
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private ServiceEncoder[] _encoders; |
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private String _servletPath; |
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private final Object[] _empty = new Object[0]; |
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public void initializeService() |
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{ |
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Orderer orderer = new Orderer(_errorLog, "encoder"); |
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Iterator i = _contributions.iterator(); |
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while (i.hasNext()) |
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{ |
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ServiceEncoderContribution c = (ServiceEncoderContribution) i.next(); |
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orderer.add(c, c.getId(), c.getAfter(), c.getBefore()); |
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} |
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List ordered = orderer.getOrderedObjects(); |
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int count = ordered.size(); |
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_encoders = new ServiceEncoder[count]; |
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for (int j = 0; j < count; j++) |
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{ |
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ServiceEncoderContribution c = (ServiceEncoderContribution) ordered.get(j); |
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_encoders[j] = c.getEncoder(); |
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} |
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} |
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public ILink constructLink(IEngineService service, boolean post, Map parameters, boolean stateful) |
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{ |
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finalizeParameters(service, parameters); |
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IEngine engine = _requestCycle.getEngine(); |
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QueryParameterMap qmap = new QueryParameterMap(parameters); |
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ServiceEncoding serviceEncoding = createServiceEncoding(qmap); |
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if (stateful) |
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_persistenceStrategySource.addParametersForPersistentProperties(serviceEncoding, post); |
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String fullServletPath = _request.getContextPath() + serviceEncoding.getServletPath(); |
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return new EngineServiceLink(_requestCycle, fullServletPath, engine.getOutputEncoding(), |
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_codec, _request, qmap, stateful); |
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} |
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protected void finalizeParameters(IEngineService service, Map parameters) |
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{ |
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Defense.notNull(service, "service"); |
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Defense.notNull(parameters, "parameters"); |
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String serviceName = service.getName(); |
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if (serviceName == null) |
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throw new ApplicationRuntimeException(ImplMessages.serviceNameIsNull()); |
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parameters.put(ServiceConstants.SERVICE, serviceName); |
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squeezeServiceParameters(parameters); |
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} |
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public ServiceEncoder[] getServiceEncoders() |
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{ |
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return _encoders; |
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} |
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protected ServiceEncoding createServiceEncoding(QueryParameterMap parameters) |
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{ |
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ServiceEncodingImpl result = new ServiceEncodingImpl(_servletPath, parameters); |
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for (int i = 0; i < _encoders.length; i++) |
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{ |
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_encoders[i].encode(result); |
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if (result.isModified()) |
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break; |
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} |
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return result; |
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} |
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protected void squeezeServiceParameters(Map parameters) |
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{ |
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Object[] serviceParameters = (Object[]) parameters.get(ServiceConstants.PARAMETER); |
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if (serviceParameters == null) |
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return; |
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parameters.put(ServiceConstants.PARAMETER, squeeze(serviceParameters)); |
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} |
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public Object[] extractListenerParameters(IRequestCycle cycle) |
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{ |
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String[] squeezed = cycle.getParameters(ServiceConstants.PARAMETER); |
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if (Tapestry.size(squeezed) == 0) |
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return _empty; |
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try |
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{ |
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return _dataSqueezer.unsqueeze(squeezed); |
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} |
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catch (Exception ex) |
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{ |
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throw new ApplicationRuntimeException(ex); |
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} |
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} |
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private String[] squeeze(Object[] input) |
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{ |
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try |
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{ |
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return _dataSqueezer.squeeze(input); |
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} |
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catch (Exception ex) |
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{ |
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throw new ApplicationRuntimeException(ex); |
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} |
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} |
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public void setDataSqueezer(DataSqueezer dataSqueezer) |
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{ |
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_dataSqueezer = dataSqueezer; |
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} |
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public void setContributions(List contributions) |
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{ |
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_contributions = contributions; |
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} |
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public void setErrorLog(ErrorLog errorLog) |
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{ |
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_errorLog = errorLog; |
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} |
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public void setServletPath(String servletPath) |
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{ |
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_servletPath = servletPath; |
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} |
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public void setRequest(WebRequest request) |
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{ |
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_request = request; |
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} |
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public void setPersistenceStrategySource(PropertyPersistenceStrategySource persistenceStrategySource) |
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{ |
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_persistenceStrategySource = persistenceStrategySource; |
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} |
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public void setRequestCycle(IRequestCycle requestCycle) |
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{ |
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_requestCycle = requestCycle; |
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} |
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} |