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Class w3c.jigsaw.servlet.ServletWrapper
java.lang.Object
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+----w3c.tools.store.AttributeHolder
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+----w3c.tools.store.Resource
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+----w3c.jigsaw.resources.HTTPResource
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+----w3c.jigsaw.resources.FilteredResource
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+----w3c.jigsaw.servlet.ServletWrapper
- public class ServletWrapper
- extends FilteredResource
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ATTR_PARAMETERS
- Attribute index - The init parameters for that servlet.
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ATTR_SERVLET_CLASS
- Attributes index - The servlet class name.
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ATTR_SERVLET_CONTEXT
- Attribute index - Our parent-inherited servlet context.
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inited
- Is out servler initialized ?
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servlet
- The servlet wrapped within that Jigsaw resource.
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STATE_EXTRA_PATH
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-
ServletWrapper()
-
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destroyServlet()
- Destroy the servlet we are wrapping.
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getInitParameter(String)
- Servlet stub implementation - Get an init parameter value.
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getInitParameterNames()
- Servlet stub implementation - Get all init parameters.
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getServlet()
- Get the servlet we are wrapping.
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getServletClass()
- Get the class name of the wrapped servlet.
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getServletContext()
- Servlet stub implementation - Get that servlet context.
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getServletDirectory()
- The Path where we can find the servlet class file.
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getServletParameters()
- Get the init parameters for our wrapped servlet.
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initialize(Object[])
- Initialize this servlet wrapper resource.
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launchServlet()
- Launch the servlet we are wrapping.
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launchServlet(Class)
- Initialize our servlet from the given (loaded) class.
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lookup(LookupState, LookupResult)
- Jigsaw's lookup on servlets.
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notifyUnload()
- This resource is being unloaded.
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perform(Request)
- Dispatch the give request to our servlet.
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setValue(int, Object)
- Catch assignements to the servlet class name attribute.
STATE_EXTRA_PATH
public static final String STATE_EXTRA_PATH
ATTR_SERVLET_CLASS
protected static int ATTR_SERVLET_CLASS
- Attributes index - The servlet class name.
ATTR_PARAMETERS
protected static int ATTR_PARAMETERS
- Attribute index - The init parameters for that servlet.
ATTR_SERVLET_CONTEXT
protected static int ATTR_SERVLET_CONTEXT
- Attribute index - Our parent-inherited servlet context.
servlet
protected Servlet servlet
- The servlet wrapped within that Jigsaw resource.
inited
protected boolean inited
- Is out servler initialized ?
ServletWrapper
public ServletWrapper()
getServletDirectory
public File getServletDirectory()
- The Path where we can find the servlet class file.
getInitParameter
public synchronized String getInitParameter(String string)
- Servlet stub implementation - Get an init parameter value.
getInitParameterNames
public synchronized Enumeration getInitParameterNames()
- Servlet stub implementation - Get all init parameters.
getServletContext
public ServletContext getServletContext()
- Servlet stub implementation - Get that servlet context.
getServletClass
public String getServletClass()
- Get the class name of the wrapped servlet.
- Returns:
- The class name for the servlet if attribute is defined. Otherwise
the class name is deduced from the resource identifier.
getServletParameters
public ArrayDictionary getServletParameters()
- Get the init parameters for our wrapped servlet.
- Returns:
- An ArrayDictionary instance if the attribute is defined,
false otherwise.
setValue
public void setValue(int idx,
Object value)
- Catch assignements to the servlet class name attribute.
When a change to that attribute is detected, the servlet is
automatically reinitialized.
- Overrides:
- setValue in class HTTPResource
destroyServlet
protected synchronized void destroyServlet()
- Destroy the servlet we are wrapping.
getServlet
public Servlet getServlet()
- Get the servlet we are wrapping.
- Returns:
- A servlet instance, if the servlet is alredy running,
null otherwise.
launchServlet
protected boolean launchServlet(Class cls)
- Initialize our servlet from the given (loaded) class.
- Parameters:
- cls - The servlet loaded main class.
- Returns:
- A boolean, true if servlet was successfully
initialised, false otherwise.
launchServlet
protected boolean launchServlet()
- Launch the servlet we are wrapping.
This method either succeed, or the wrapper resource itself will fail
to initialize, acting as transparently as possible (in some sense).
- Returns:
- A boolean, true if servlet launched.
perform
public Reply perform(Request request) throws HTTPException
- Dispatch the give request to our servlet.
If the servlet cannot be inititalized, we just throw an error message
otherwise, we just delegate that request processing to the underlying
servlet instance.
- Parameters:
- request - The request to be processed.
- Throws: HTTPException
- If the wrapped servlet is not initialized.
- Overrides:
- perform in class HTTPResource
lookup
public boolean lookup(LookupState ls,
LookupResult lr) throws HTTPException
- Jigsaw's lookup on servlets.
Once here, we have reached a leaf servlet (or at least the remaining
lookup is to be done at the servlet itself). We keep track of the
path info and mark that servlet as the target of request.
- Parameters:
- ls - The lookup state.
- lr - The lookup result.
- Throws: HTTPException
- If some error occurs.
- Overrides:
- lookup in class FilteredResource
notifyUnload
public void notifyUnload()
- This resource is being unloaded.
- Overrides:
- notifyUnload in class Resource
initialize
public void initialize(Object values[])
- Initialize this servlet wrapper resource.
After the wrapper itself is inited, it performs the servlet
initialzation.
- Parameters:
- values - The default attribute values.
- Overrides:
- initialize in class FilteredResource
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