need help in tutorial Getting_Started_with_WCM_for_Alfresco

[shikha]

i have gone through this tutorial and try to modify it according to my needs.
i m facing problem when i try to modify PressReleaseBean.java file.
i have added more elements to the existing press-release.xsd file and accordingly modify the java class, so that more information will be displayed on related index.jsp, but when i view the page i got the error Unable to find a value for "Authors" in object of class "org.alfresco.web.pr.PressReleaseBean" using operator "."

i don't modify the pr.tld file

can body help where i go wrong or where may i forgot something
thankx in advance

[shikha]

using the files i mentioned below, html form generated correctly but the index.jsp page which use PressReleaseBean.class is showing error.
i need to mention more information on the index.jsp page for all press releases.
PressReleaseBean.java is complied successfully.

can body help where i go wrong???

the files modified by me are:

press-release.xsd is:

<?xml version="1.0"?>
<!–
* Copyright (C) 2005-2007 Alfresco Software Limited.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.

* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU General Public License for more details.

* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

* As a special exception to the terms and conditions of version 2.0 of
* the GPL, you may redistribute this Program in connection with Free/Libre
* and Open Source Software ("FLOSS") applications as described in Alfresco's
* FLOSS exception.  You should have recieved a copy of the text describing
* the FLOSS exception, and it is also available here:
* http://www.alfresco.com/legal/licensing"

Describes a book release of journal and related assets.
–>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
      xmlnsr="http://www.alfresco.org/alfresco/pr"
           targetNamespace="http://www.alfresco.org/alfresco/pr"
           elementFormDefault="qualified">

  <!– dynamically loads the company footer choices simple type –>
  <xs:include schemaLocation="/media/releases/get_company_footer_choices_simple_type.jsp"/>

  <xs:simpleType name="category">
    <xs:restriction base="xs:normalizedString">
      <xs:enumeration value="Books"/>
      <xs:enumeration value="Journals"/>
      <xs:enumeration value="Newsletters"/>
      <xs:enumeration value="Magazines"/>
      <xs:enumeration value="Others"/>
    </xs:restriction>
  </xs:simpleType>
<xs:simpleType name="BLanguage">
    <xs:restriction base="xs:normalizedString">
      <xs:enumeration value="English"/>
      <xs:enumeration value="Hindi"/>
    </xs:restriction>
  </xs:simpleType>
<xs:simpleType name="BType">
    <xs:restriction base="xs:normalizedString">
      <xs:enumeration value="HandBook"/>
      <xs:enumeration value="PaperBack"/>
    </xs:restriction>
  </xs:simpleType>


  <!– defines the form for creating a journal release –>
  <xs:element name="press_release">
    <xs:complexType>
      <xs:sequence>
         <xs:element name="title" type="xs:normalizedString"/>
           <xs:element name="Authors" type="xs:normalizedString"/>
      <xs:element name="Language" type="pr:BLanguage" default="Hindi"/>
      <xs:element name="Price" type="xs:normalizedString"/>
      <xs:element name="Pages" type="xs:normalizedString"/>
      <xs:element name="BookType" type="pr:BType" default="HandBook"/>
      <xs:element name="ISBNno" type="xs:normalizedString"/>
      <xs:element name="YearOfPublication" type="xs:normalizedString"/>
<xs:element name="Publisher" type="xs:normalizedString"/>
        <xs:element name="abstract" type="xs:string" minOccurs="0" maxOccurs="unbounded"/>
           <xs:element name="UploadFiles" minOccurs="0"
               maxOccurs="1">
               <xs:complexType>
                  <xs:sequence>
                     <xs:element name="TOC " type="xs:anyURI" minOccurs="0" maxOccurs="1"/>   
<xs:element name="CoverPage" type="xs:anyURI" minOccurs="0" maxOccurs="1"/>   
<xs:element name="BackPage" type="xs:anyURI" minOccurs="0" maxOccurs="1"/>   
                  </xs:sequence>
               </xs:complexType>
            </xs:element>   
   <xs:element name="keywords" type="xs:normalizedString" minOccurs="0" maxOccurs="unbounded"/>
   <xs:element name="category" type="pr:category" default="Books"/>
   <xs:element name="launch_date" type="xs:date"/>
   <xs:element name="expiration_date" type="xs:date"/>
      </xs:sequence>
    </xs:complexType>
  </xs:element>
</xs:schema>

press-release.xsl is:
<?xml version="1.0" encoding="UTF-8"?>
<!–
* Copyright (C) 2005-2007 Alfresco Software Limited.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.

* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU General Public License for more details.

* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

* As a special exception to the terms and conditions of version 2.0 of
* the GPL, you may redistribute this Program in connection with Free/Libre
* and Open Source Software ("FLOSS") applications as described in Alfresco's
* FLOSS exception.  You should have recieved a copy of the text describing
* the FLOSS exception, and it is also available here:
* http://www.alfresco.com/legal/licensing"


Produces an html rendition of a press release
–>
<xsl:stylesheet version="1.0"
      xmlns:xhtml="http://www.w3.org/1999/xhtml"
      xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
      xmlnsr="http://www.alfresco.org/alfresco/pr"
      xmlns:fn="http://www.w3.org/2005/02/xpath-functions"
      exclude-result-prefixes="xhtml">
  <xslutput method="html"  encoding="UTF-8" indent="yes"
              doctype-public="-//W3C//DTD XHTML 1.0 Transitional//EN"
              doctype-system="http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd'/>

  <xslreserve-space elements="*"/>

  <xsl:template match="/">
    <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
      <head>
   <!– include common navigation components using SSIs (see web.xml for more information) –>
   <xsl:comment>#include virtual="/assets/include_in_head.html"</xsl:comment>
   <title><xsl:value-of select="/prress_release/pr:title"/></title>
   <meta name="description" lang="en" >
     <xsl:attribute name="content"><xsl:value-of select="/prress_release/pr:title"/></xsl:attribute>
        </meta>
   <style type="text/css">
     p.leader {
     font-weight: 700;
     }
   </style>
      </head>
      <body>
        <div id="container">
     <xsl:comment>#include virtual="/assets/include_main_navigation.html"</xsl:comment>
     <xsl:comment>#include virtual="/about/navigation.html"</xsl:comment>
     <div id="content">&#160;</div>
     <!– Main Content –>
     <div id="main_content">

       <!– BEGIN MAIN CONTENT –>
       <h1><xsl:value-of select="/prress_release/pr:title"/></h1> 
      <p>
   <table border="0"><tr><td>
      <strong>Authors: </strong><xsl:value-of select="/prress_release/pr:Authors"/>
       <p><strong>Language: </strong><xsl:value-of select="/prress_release/pr:BLanguage"/>
       </p><p><strong>Price: </strong><xsl:value-of select="/prress_release/prrice"/>
       </p><p><strong>Pages: </strong><xsl:value-of select="/prress_release/prages"/>
       </p><p><strong>Type: </strong><xsl:value-of select="/prress_release/pr:BType"/>
       </p><p><strong>ISBN no: </strong><xsl:value-of select="/prress_release/pr:ISBN"/>
       </p><p><strong>Year of Publication: </strong><xsl:value-of select="/prress_release/pr:YearOfPublication"/>
    </p><p><strong>Publisher: </strong><xsl:value-of select="/prress_release/prublisher"/>
</p></td>
<td><p>Cover Page</p>
<xsl:element name="img">
         <xsl:attribute name="src">
      <xsl:value-of select="/prress_release/pr:UploadFiles/pr:CoverPage"/>
         </xsl:attribute>
        <xsl:attribute name="align">                               <xsl:text>left</xsl:text>
        </xsl:attribute>
       </xsl:element>
</td>
<td><p>
Back Page</p>
<xsl:element name="img">
         <xsl:attribute name="src">
      <xsl:value-of select="/prress_release/pr:UploadFiles/pr:BackPage"/>
         </xsl:attribute>
        <xsl:attribute name="align">                               <xsl:text>left</xsl:text>
        </xsl:attribute>
       </xsl:element>
</td>
</tr>
</table></p>
<p><strong>Abstract: </strong><xsl:value-of select="/prress_release/pr:abstract"/></p>
<p>
<xsl:element name="a">
         <xsl:attribute name="href">
      <xsl:value-of select="/prress_release/pr:UploadFiles/pr:TOC"/>
         </xsl:attribute>
         <xsl:text>view Table of Content</xsl:text>
       </xsl:element>
</p>
       <p></p>
    
     </div>
     <!– Feature Content –>
     <div id="right_content">
       <div class="box_blue">
         <h2>ICAR Publications</h2>

         <!– store the current category in a variable for later comparison –>
         <xsl:variable name="my_category"
             select="/prress_release/pr:category"/>
         <!– store the current title in a variable for later comparison –>
         <xsl:variable name="my_title"
             select="/prress_release/pr:title"/>
         <!– load all press releases into a variable by calling into a form data function –>
         <xsl:variable name="all_press_release"
             select="alfarseXMLDocuments('press_release')"/>
         <ul>
      <!– select a unique set of categories for the first level navigation –>
      <xsl:for-each select="$all_press_release[not(pr:category=preceding-sibling:rress_release/pr:category)]">
        <xsl:sort select="pr:category"/>
        <li>
          <xsl:choose>
            <!– for the current category, present all press releases in this category –>
            <xsl:when test="pr:category=$my_category">
         <b><xsl:value-of select="pr:category"/></b>
         <ul>
           <!– iterate all press releases which are in my_category –>
           <xsl:for-each select="$all_press_release[pr:category=$my_category]">
             <xsl:sort select="pr:title"/>
             <li>
               <xsl:element name="a">
            <xsl:if test="$my_title=pr:title">
              <xsl:attribute name="style">font-weight:bold;</xsl:attribute>
            </xsl:if>
            <xsl:attribute name="href">
              <xsl:value-of select="fn:replaceAll(string(@alf:file_name), '.xml', '.html')"/>
            </xsl:attribute>
            <xsl:value-of select="pr:title"/>
               </xsl:element>
             </li>
           </xsl:for-each>
         </ul>
            </xsl:when>
            <xsltherwise>
         <!–
         for other categories present a link to the first document in that category
         with the category label
         –>
         <xsl:element name="a">
           <xsl:attribute name="href">
             <xsl:value-of select="fn:replaceAll(string(@alf:file_name), '.xml', '.html')"/>
           </xsl:attribute>
           <xsl:value-of select="pr:category"/>
         </xsl:element>
            </xsltherwise>
          </xsl:choose>
        </li>
      </xsl:for-each>
         </ul>
       </div>
     </div>
     <div id="clear">&#160;</div>
   </div>
   <!–All Three End –>
   <xsl:comment>#include virtual="/assets/footer.html"</xsl:comment>
      </body>
    </html>
  </xsl:template>
</xsl:stylesheet>

PressReleaseBean.java is:

package org.alfresco.web.pr;

import java.util.*;
import java.text.*;
import javax.servlet.jsp.PageContext;
import org.w3c.dom.*;
import org.alfresco.web.forms.*;

/**
* Bean for getting data for press releases.
* It's used by /media/releases/index.jsp to aggregate all forms created by press-release.xsd in
* /media/releases/content and generate an index page for them.
*/
public class PressReleaseBean
{
   /**
    * Loads all xml assets created by press-release.xsd in /media/releases/content and populates
    * PressReleaseBeans with their contents.
    *
    * @param pageContext the page context from the jsp, needed for accessing the
    * servlet context for the ServletContextFormDataFunctionsAdapter class.
    *
    * @return a list of populated PressReleaseBeans.
    */
   public static List<PressReleaseBean> getPressReleases(final PageContext pageContext)
      throws Exception
   {
      final FormDataFunctions ef =
         new ServletContextFormDataFunctionsAdapter(pageContext.getServletContext());

      final Map<String, Document> entries =
         ef.parseXMLDocuments("press-release", "/media/releases/content");
      final List<PressReleaseBean> result = new ArrayList<PressReleaseBean>(entries.size());
      for (Map.Entry<String, Document> entry : entries.entrySet())
      {
         result.add(PressReleaseBean.loadPressRelease(entry.getValue(), entry.getKey()));
      }
      return result;
   }

   /**
    * Provides a list of press releases for a specified category.
    *
    * @param pageContext the page context from the jsp
    * @param category the category to search for
    *
    * @return all press releases within the specified category.
    */
   public static List<PressReleaseBean> getPressReleasesInCategory(final PageContext pageContext,
                                                                   final String category)
      throws Exception
   {
      final FormDataFunctions ef =
         new ServletContextFormDataFunctionsAdapter(pageContext.getServletContext());

      final Map<String, Document> entries =
         ef.parseXMLDocuments("press-release", "/media/releases/content");
      final List<PressReleaseBean> result = new ArrayList<PressReleaseBean>(entries.size());
      for (Map.Entry<String, Document> entry : entries.entrySet())
      {
         final Document d = entry.getValue();
         final Element cEl = (Element)
            d.getElementsByTagName("pr:category").item(0);
        
         if (category.equals(cEl.getFirstChild().getNodeValue()))
         {
            result.add(PressReleaseBean.loadPressRelease(d, entry.getKey()));
         }

      }
      return result;
   }

   /**
    * Returns a set of unique categories used by the press releases in sorted order.
    *
    * @param pageContext the page context variable from the jsp
    *
    * @return a set of unique categories used by the press releases in sorted order.
    */
   public static Set<String> getPressReleaseCategories(final PageContext pageContext)
      throws Exception
   {
      final FormDataFunctions ef =
         new ServletContextFormDataFunctionsAdapter(pageContext.getServletContext());

      final TreeSet<String> result = new TreeSet<String>();
      final Map<String, Document> entries =
         ef.parseXMLDocuments("press-release", "/media/releases/content");
      for (Map.Entry<String, Document> entry : entries.entrySet())
      {
         final Element cEl = (Element)
            entry.getValue().getElementsByTagName("pr:category").item(0);
       
      }
      return result;
   }

   /**
    * Utility function to create an instance of a press release using
    * form instance data.
    *
    * @param d the xml document
    * @param fileName the filename of the file from which the document was loaded.
    *
    * @return a press release representing the content of the file.
    */
   private static PressReleaseBean loadPressRelease(final Document d,
                                                    final String fileName)
      throws Exception
   {
      final Element t = (Element)d.getElementsByTagName("pr:title").item(0);
      final Element a = (Element)d.getElementsByTagName("pr:Authors").item(0);
      final Element dateEl = (Element)d.getElementsByTagName("pr:launch_date").item(0);
      final Date date = new SimpleDateFormat("yyyy-MM-dd").parse(dateEl.getFirstChild().getNodeValue());
final Element p = (Element)d.getElementsByTagName("prrice").item(0);
final Element y = (Element)d.getElementsByTagName("pr:YearOfPublication").item(0);


      String href = "/media/releases/content/" + fileName;
      href = href.replaceAll(".xml$", ".html");
      return new PressReleaseBean(t.getFirstChild().getNodeValue(),
                                  a.getFirstChild().getNodeValue(),
                                  date,
                                  href,p.getFirstChild().getNodeValue(),y.getFirstChild().getNodeValue());
   }

   private final String title;
   private final String Authors;//it is used for authors name
   private final Date launchDate;
   private final String href;// for more details link
private final String Price;
private final String YearOfPublication;




   public PressReleaseBean(final String title,
                           final String Authors,
                           final Date launchDate,
                           final String href,final String Price,final String YearOfPublication)
   {
      this.title = title;
      this.Authors = Authors;
      this.launchDate = launchDate;
      this.href = href;
this.Price = Price;
this.YearOfPublication= YearOfPublication;


   }

   /**
    * The title of the press release as defined in the xml asset.
    */
   public String getTitle()
   {
      return this.title;
   }

   /**
    * The abstract of the press release as defined in the xml asset.
    */
   public String getAuthors()
   {
      return this.Authors;
   }

   /**
    * The launch date of the press release as defined in the xml asset.
    */
   public Date getLaunchDate()
   {
      return this.launchDate;
   }

   /**
    * Returns the url within the webapp to the xml file describing this press release
    *
    * @return the url to the xml file which will be something like /media/releases/content/[filename].xml
    */
   public String getHref()
   {
      return this.href;
   }
public String getPrice()
   {
      return this.Price;
   }
public String getYearOfPublication()
   {
      return this.YearOfPublication;
   }
}

pr.tld is:   this file is not modifed
<?xml version="1.0" encoding="UTF-8" ?>

<taglib xmlns="http://java.sun.com/xml/ns/j2ee"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee web-jsptaglibrary_2_0.xsd"
        version="2.0">

    <tlib-version>1.0</tlib-version>
    <short-name>pr</short-name>
    <uri>http://www.alfresco.org/alfresco/pr</uri>
    <function>
      <name>getPressReleases</name>
      <function-class>org.alfresco.web.pr.PressReleaseBean</function-class>
      <function-signature>java.util.List getPressReleases(javax.servlet.jsp.PageContext)</function-signature>
    </function>
    <function>
      <name>getPressReleasesInCategory</name>
      <function-class>org.alfresco.web.pr.PressReleaseBean</function-class>
      <function-signature>java.util.List getPressReleasesInCategory(javax.servlet.jsp.PageContext, java.lang.String)</function-signature>
    </function>
    <function>
      <name>getPressReleaseCategories</name>
      <function-class>org.alfresco.web.pr.PressReleaseBean</function-class>
      <function-signature>java.util.Set getPressReleaseCategories(javax.servlet.jsp.PageContext)</function-signature>
    </function>
    <function>
      <name>getCompanyFooterChoices</name>
      <function-class>org.alfresco.web.pr.CompanyFooterBean</function-class>
      <function-signature>java.util.List getCompanyFooterChoices(javax.servlet.jsp.PageContext)</function-signature>
    </function>
</taglib>

[zaizi]

Try "authors".

Ainga