[Generator-rt-devel] generator_runtime/src/java/generator/runtime/jsp TranslateTag.java, NONE, 1.1 ForEachTag.java, 1.3, 1.4

[Rick K. <ric...@us...>]

Update of /cvsroot/generator-rt/generator_runtime/src/java/generator/runtime/jsp
In directory sfp-cvsdas-2.v30.ch3.sourceforge.com:/tmp/cvs-serv28711/src/java/generator/runtime/jsp

Modified Files:
	ForEachTag.java 
Added Files:
	TranslateTag.java 
Log Message:
added <gen:translate> tag support

--- NEW FILE: TranslateTag.java ---
/*
 * Generator Runtime Servlet Framework
 * Copyright (C) 2004 Rick Knowles
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * Version 2 as published by the Free Software Foundation.
 *
 * 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 Version 2 for more details.
 *
 * You should have received a copy of the GNU General Public License
 * Version 2 along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */
package generator.runtime.jsp;

import generator.runtime.exception.ApplicationException;
import generator.runtime.log.Log;
import generator.runtime.log.LogManager;
import generator.runtime.router.AttributesMap;
import generator.runtime.router.RouterConstants;
import generator.runtime.servlet.ContextInitializer;
import generator.runtime.session.HttpSessionWrapper;
import generator.runtime.session.ServerSideApplicationState;
import generator.runtime.session.ServerSideUserState;
import generator.runtime.session.ServletContextWrapper;
import generator.runtime.utils.ApplicationProperties;
import generator.runtime.utils.ParamUtils;
import generator.runtime.utils.StringUtils;
import generator.runtime.xml.XMLUtils;

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Hashtable;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.jsp.JspTagException;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.tagext.BodyContent;
import javax.servlet.jsp.tagext.BodyTagSupport;

import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

/**
 * Special tag to translate the contents using the translations cache for the selected language 
 */
public class TranslateTag extends BodyTagSupport {
    private final Log log = LogManager.getLog(TranslateTag.class);

    private Object[] parameters;
    
	public void setParameters(Object[] parameters) {
        this.parameters = parameters;
    }
    
    public void setParameterList(Collection parameters) {
        this.parameters = new ArrayList(parameters).toArray();
    }

    public int doAfterBody() throws JspTagException {
        try {
            BodyContent bodyContent = super.getBodyContent();
            String bodyString = bodyContent.getString();
            JspWriter out = bodyContent.getEnclosingWriter();
            
            String language = getLanguage((HttpServletRequest) pageContext.getRequest());
            Map translations = getTranslations(language, new ServletContextWrapper(pageContext.getServletContext()));
            
            out.print(translate(bodyString, this.parameters, translations));
            bodyContent.clear(); // empty buffer
            return SKIP_BODY;
        } catch (IOException e) {
            throw new ApplicationException("Error during translate tag", e);
        } // end of catch

    }
    protected String getLanguage(HttpServletRequest req) {
        ServerSideUserState ssus = new HttpSessionWrapper(req);
        String sessionDefault = (String) ParamUtils.nvl(ssus.getAttribute(
                    RouterConstants.PREFERRED_LANGUAGE_PARAM), "english");
        return ParamUtils.getParameter(new AttributesMap(req), RouterConstants.PREFERRED_LANGUAGE_PARAM, sessionDefault);
    }
    
    protected String translate(String template, Object params[], Map translations) {
        String translated = null;
        if (translations != null) {
            translated = (String) translations.get(template);
        }
        if (translated == null) {
            translated = template;
        }
        if (params != null) {
            String tokens[][] = new String[params.length][2];
            for (int n = 0; n < params.length; n++) {
                tokens[n][0] = "[#" + (n + 1) + "]";
                tokens[n][1] = ParamUtils.nvl(params[n], "").toString();
            }
            translated = StringUtils.stringReplace(translated, tokens);
        }
        return translated;
    }
    
    protected Map getTranslations(String language, ServerSideApplicationState ssas) {
        String contextKey = "translationMap." + language;
        synchronized (ssas.getSemaphore(contextKey)) {
            Map translations = (Map) ssas.getAttribute(contextKey);
            if (translations == null) {
                ApplicationProperties props = (ApplicationProperties) ssas.getAttribute(ContextInitializer.ATTR_PROPS);
                String translationSheet = props.stringProperty("translationSheet/@" + language, 
                        "${application/@webroot}/WEB-INF/translations/" + language + ".xml");
                File file = new File(translationSheet);
                if (!file.isFile()) {
                    log.warning("Translation file not found: " + translationSheet);
                    return null;
                }
                Document doc = XMLUtils.parseFileToXML(file);
                NodeList items = doc.getDocumentElement().getChildNodes();
                translations = new Hashtable();
                for (int n = 0; n < items.getLength(); n++) {
                    Node node = items.item(n);
                    if (node.getNodeType() == Node.ELEMENT_NODE) {
                        String key = XMLUtils.getAttributeByName(node, "key");
                        String text = XMLUtils.extractStringFromElement(node);
                        if ((key != null) && (text != null)) {
                            translations.put(key, text);
                        }
                    }
                }
                log.info("Loaded " + translations.size() + " translations for " + language + " from " + translationSheet);
                ssas.setAttribute(contextKey, translations);
            }
            return translations;
        }
    }
}

Index: ForEachTag.java
===================================================================
RCS file: /cvsroot/generator-rt/generator_runtime/src/java/generator/runtime/jsp/ForEachTag.java,v
retrieving revision 1.3
retrieving revision 1.4
diff -C2 -d -r1.3 -r1.4
*** ForEachTag.java	23 Dec 2006 06:41:31 -0000	1.3
--- ForEachTag.java	26 Mar 2010 01:21:44 -0000	1.4
***************
*** 26,65 ****
  import java.util.Iterator;
  
! import javax.servlet.jsp.JspException;
  
  /**
   * Special tag to extend forEach to allow SearchResult object contents to be iterated over easily 
   */
! public class ForEachTag extends org.apache.taglibs.standard.tag.el.core.ForEachTag {
! 
! 	public int doStartTag() throws JspException {
! 		int retCode = super.doStartTag();
! 		if ((retCode == EVAL_BODY_INCLUDE) || (retCode == EVAL_BODY_AGAIN)) {
! 			setExtraLoopVariables();
! 		}
! 		return retCode;
! 	}
! 
! 	public int doAfterBody() throws JspException {
! 		int retCode = super.doAfterBody();
! 		if ((retCode == EVAL_BODY_INCLUDE) || (retCode == EVAL_BODY_AGAIN)) {
! 			setExtraLoopVariables();
! 		}
! 		return retCode;
! 	}
  
! 	protected void setExtraLoopVariables() throws JspException {
!         Object item = getCurrent();
! 		if ((item != null) && (item instanceof SearchResult)) {
! 			SearchResult sr = (SearchResult) item;
              DBConnectionWrapper wrapper = DBConnectionWrapperAllocationFilter.getConnectionFromRequest(
                      this.pageContext.getRequest());
              DBPeerFactory dbPeerFactory = (DBPeerFactory) pageContext.getServletContext().getAttribute(
                      DBPeerFactoryContextInitializer.ATTR_PEER_FACTORY);
! 			for (Iterator i = sr.keySet().iterator(); i.hasNext(); ) {
! 				String key = (String) i.next();
! 				this.pageContext.setAttribute(key, sr.get(wrapper, dbPeerFactory, key));
! 			}
! 		}
! 	}
  }
--- 26,52 ----
  import java.util.Iterator;
  
! import javax.servlet.jsp.JspTagException;
  
  /**
   * Special tag to extend forEach to allow SearchResult object contents to be iterated over easily 
   */
! public class ForEachTag extends org.apache.taglibs.standard.tag.rt.core.ForEachTag {
! //    private final Log log = new Log(ForEachTag.class);
  
!     protected Object next() throws JspTagException {
!         Object item = super.next();
!         if ((item != null) && (item instanceof SearchResult)) {
!             SearchResult sr = (SearchResult) item;
              DBConnectionWrapper wrapper = DBConnectionWrapperAllocationFilter.getConnectionFromRequest(
                      this.pageContext.getRequest());
              DBPeerFactory dbPeerFactory = (DBPeerFactory) pageContext.getServletContext().getAttribute(
                      DBPeerFactoryContextInitializer.ATTR_PEER_FACTORY);
!             for (Iterator i = sr.keySet().iterator(); i.hasNext(); ) {
!                 String key = (String) i.next();
!                 Object value = sr.get(wrapper, dbPeerFactory, key);
!                 this.pageContext.setAttribute(key, value);
!             }
!         }
!         return item;
!     }
  }