org.codehaus.groovy.grails.web.servlet.view
[Java] Class GroovyPageView

java.lang.Object
  org.springframework.web.servlet.view.AbstractUrlBasedView
      org.codehaus.groovy.grails.web.servlet.view.GroovyPageView

public class GroovyPageView
extends AbstractUrlBasedView

A Spring View that renders Groovy Server Pages to the reponse. It requires an instance of GroovyPagesTemplateEngine to be set and will render to view returned by the getUrl() method of AbstractUrlBasedView This view also requires an instance of GrailsWebRequest to be bound to the currently executing Thread using Spring's RequestContextHolder. This can be done with by adding the GrailsWebRequestFilter.

Authors:

Graeme Rocher

See Also:

getUrl()

GroovyPagesTemplateEngine

GrailsWebRequestFilter

org.springframework.web.context.request.RequestContextHolder

Since:

0.4

EXCEPTION_MODEL_KEY

public static final java.lang.String EXCEPTION_MODEL_KEY

createResponseWriter

protected java.io.Writer createResponseWriter(HttpServletResponse response)

Creates the Response Writer for the specified HttpServletResponse instance.

Parameters:

response - The HttpServletResponse instance

Returns:

A response Writer

handleException

protected void handleException(java.lang.Exception exception, @SuppressWarnings("unused") java.io.Writer out, @SuppressWarnings("unused") GroovyPagesTemplateEngine engine, @SuppressWarnings("unused") HttpServletRequest request, @SuppressWarnings("unused") HttpServletResponse response)

Performs exception handling by attempting to render the Errors view.

Parameters:

exception - The exception that occured

out - The Writer

engine - The GSP engine

isExpired

public boolean isExpired()

renderMergedOutputModel

@SuppressWarnings({ "unchecked", "rawtypes" })
@Override
protected final void renderMergedOutputModel(java.util.Map model, HttpServletRequest request, HttpServletResponse response)

Delegates to renderMergedOutputModel(..)

throws:

Exception When an error occurs rendering the view

Parameters:

model - The view model

request - The HttpServletRequest

response - The HttpServletResponse

See Also:

renderMergedOutputModel(java.util.Map, javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)

renderWithTemplateEngine

@SuppressWarnings("rawtypes")
protected void renderWithTemplateEngine(GroovyPagesTemplateEngine engine, java.util.Map model, HttpServletResponse response, HttpServletRequest request)

Replaces the requirement for "super.exposeModelAsRequestAttributes(model, request);" in renderMergedOutputModel. not in use, since causes bugs, could improve performance

Override:

public Object getAttribute(String name) { Object value = super.getAttribute(name); if (value == null) { return model.get(name); } return value; }

Override:

public Enumeration getAttributeNames() { return CollectionUtils.append(super.getAttributeNames(), CollectionUtils.asEnumeration(model.keySet().iterator())); }

Override:

public void removeAttribute(String name) { super.removeAttribute(name); model.remove(name); }

Override:

public void setAttribute(String name, Object o) { super.setAttribute(name, o); if (o == null) { model.remove(name); } } }

Authors:

Lari Hotari private static class ModelExposingHttpRequestWrapper extends HttpServletRequestWrapper { Map model; public ModelExposingHttpRequestWrapper(HttpServletRequest request, Map model) { super(request); this.model = model; }

setTemplateEngine

public void setTemplateEngine(GroovyPagesTemplateEngine templateEngine)

Groovy Documentation