com.saperion.ngc.servlet

Class AbstractStreamingServlet

java.lang.Object

javax.servlet.GenericServlet

javax.servlet.http.HttpServlet

com.saperion.ngc.servlet.AbstractStreamingServlet

All Implemented Interfaces:

Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig

Direct Known Subclasses:

StreamingServlet, ViewDocumentServlet, ViewTemporaryDocumentServlet

public abstract class AbstractStreamingServlet
extends javax.servlet.http.HttpServlet

Abstract class with common methods for streaming servlets.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
AbstractStreamingServlet()

Method Summary

Methods

Modifier and Type	Method and Description
void	destroy()
protected DocumentService	getDocService(javax.servlet.http.HttpSession session) Returns an instance of the DocumentService by the given session.
void	init()
protected void	writeContent(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, String hDoc, int element, String filename, boolean currentRevision) Writes the document's content to the request's output stream.
protected void	writeContent(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, String hDoc, int element, String filename, boolean currentRevision, long start, long size) Writes the document's content to the request's output stream.
protected void	writeInputStream(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, InputStream in, String filename) Writes the given input stream to the responses output stream.

Methods inherited from class javax.servlet.http.HttpServlet

doDelete, doGet, doHead, doOptions, doPost, doPut, doTrace, getLastModified, service, service

Methods inherited from class javax.servlet.GenericServlet

getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, log, log

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AbstractStreamingServlet

public AbstractStreamingServlet()

Method Detail

init

public void init()
          throws javax.servlet.ServletException

Overrides:

init in class javax.servlet.GenericServlet

Throws:

javax.servlet.ServletException

See Also:

GenericServlet.init()

destroy

public void destroy()

Specified by:

destroy in interface javax.servlet.Servlet

Overrides:

destroy in class javax.servlet.GenericServlet

See Also:

GenericServlet.destroy()

writeContent

protected void writeContent(javax.servlet.http.HttpServletRequest request,
                javax.servlet.http.HttpServletResponse response,
                String hDoc,
                int element,
                String filename,
                boolean currentRevision)
                     throws IOException

Writes the document's content to the request's output stream.

Parameters:

request - the request

response - the response

hDoc - the hdoc

element - the element

filename - the filename

currentRevision - current revision

Throws:

IOException - Signals that an I/O exception has occurred.

writeContent

protected void writeContent(javax.servlet.http.HttpServletRequest request,
                javax.servlet.http.HttpServletResponse response,
                String hDoc,
                int element,
                String filename,
                boolean currentRevision,
                long start,
                long size)
                     throws IOException

Writes the document's content to the request's output stream.

Parameters:

request - the request

response - the response

hDoc - the hdoc

element - the element

filename - the filename

currentRevision - current revision

Throws:

IOException - Signals that an I/O exception has occurred.

writeInputStream

protected void writeInputStream(javax.servlet.http.HttpServletRequest request,
                    javax.servlet.http.HttpServletResponse response,
                    InputStream in,
                    String filename)
                         throws IOException

Writes the given input stream to the responses output stream.

Parameters:

request - The HttpServletRequest.

response - The HttpServletResponse

in - The InputStream that holds the data to write to the output stream.

filename - The filename of the data.

Throws:

IOException - if an exception occurs.

getDocService

protected DocumentService getDocService(javax.servlet.http.HttpSession session)

Returns an instance of the DocumentService by the given session.

Parameters:

session - The current session instance.

Returns:

an instance of the DocumentService.