org.eclipse.smila.search.servlet
Class SMILASearchServlet

java.lang.Object
  HttpServlet
      org.eclipse.smila.search.servlet.SMILASearchServlet

public class SMILASearchServlet
extends HttpServlet

Author:

jschumacher

Field Summary

static java.lang.String	DEFAULT_PIPELINE default pipeline name.
static java.lang.String	DEFAULT_STYLESHEET default stylesheet name.
static java.lang.String	ELEMENT_INDEX_NAME Element name for a index names list entry.
static java.lang.String	ELEMENT_INDEX_NAMES Element name for the index names list.

Constructor Summary

SMILASearchServlet()

Method Summary

protected void	appendIndexList(org.w3c.dom.Document doc) Appends a list of index names to the document.
protected void	doGet(HttpServletRequest request, HttpServletResponse response)
protected void	doPost(HttpServletRequest request, HttpServletResponse response)
protected void	doPut(HttpServletRequest request, HttpServletResponse response)
protected ResultDocumentBuilder	getErrorBuilder() ensure and return a ResultDocumentBuilder.
protected ServletFileUpload	getFileUploadParser() ensure and return a file upload parser.
protected javax.xml.transform.Transformer	getXSLTransformer(org.w3c.dom.Document xslDoc) create XSL transformer for stylesheet.
protected void	processRequest(HttpServletRequest request, HttpServletResponse response) extract query parameters from request, create SMILA Query record and send it to a SearchService, transform the DOM result to HTML using an XSLT stylesheet.
protected byte[]	transform(org.w3c.dom.Document doc, java.lang.String stylesheet) transform DOM documment using stylesheet.

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_PIPELINE

public static final java.lang.String DEFAULT_PIPELINE

default pipeline name.

See Also:

Constant Field Values

DEFAULT_STYLESHEET

public static final java.lang.String DEFAULT_STYLESHEET

default stylesheet name.

See Also:

Constant Field Values

ELEMENT_INDEX_NAMES

public static final java.lang.String ELEMENT_INDEX_NAMES

Element name for the index names list.

See Also:

Constant Field Values

ELEMENT_INDEX_NAME

public static final java.lang.String ELEMENT_INDEX_NAME

Element name for a index names list entry.

See Also:

Constant Field Values

Constructor Detail

SMILASearchServlet

public SMILASearchServlet()

Method Detail

doGet

protected void doGet(HttpServletRequest request,
                     HttpServletResponse response)
              throws ServletException,
                     java.io.IOException

Throws:

ServletException

java.io.IOException

See Also:

javax.servlet.http.HttpServlet#doGet(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)

doPost

protected void doPost(HttpServletRequest request,
                      HttpServletResponse response)
               throws ServletException,
                      java.io.IOException

Throws:

ServletException

java.io.IOException

See Also:

javax.servlet.http.HttpServlet#doPost(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)

doPut

protected void doPut(HttpServletRequest request,
                     HttpServletResponse response)
              throws ServletException,
                     java.io.IOException

Throws:

ServletException

java.io.IOException

See Also:

javax.servlet.http.HttpServlet#doPut(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)

processRequest

protected void processRequest(HttpServletRequest request,
                              HttpServletResponse response)
                       throws ServletException,
                              java.io.IOException

extract query parameters from request, create SMILA Query record and send it to a SearchService, transform the DOM result to HTML using an XSLT stylesheet.

Parameters:

request - HTTP request

response - HTTP response

Throws:

ServletException - error during processing

java.io.IOException - error writing result to response stream

transform

protected byte[] transform(org.w3c.dom.Document doc,
                           java.lang.String stylesheet)
                    throws ServletException

transform DOM documment using stylesheet.

Parameters:

doc - DOM search result document

stylesheet - stylesheet name (without .xsl suffix)

Returns:

HTML result

Throws:

ServletException - error during transformation

getXSLTransformer

protected javax.xml.transform.Transformer getXSLTransformer(org.w3c.dom.Document xslDoc)
                                                     throws ServletException

create XSL transformer for stylesheet.

Parameters:

xslDoc - XSL DOM document

Returns:

XSL transformer

Throws:

ServletException - error.

appendIndexList

protected void appendIndexList(org.w3c.dom.Document doc)

Appends a list of index names to the document.

Parameters:

doc - the document to append the list to

getFileUploadParser

protected ServletFileUpload getFileUploadParser()

ensure and return a file upload parser.

Returns:

FileUpload helper.

getErrorBuilder

protected ResultDocumentBuilder getErrorBuilder()

ensure and return a ResultDocumentBuilder.

Returns:

ResultDocumentBuilder helper.