IncludeTag.java

/* ===============================================================================
*
* Part of the InfoGlue Content Management Platform (www.infoglue.org)
*
* ===============================================================================
*
*  Copyright (C)
* 
* 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. See the file LICENSE.html for more information.
* 
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY, including 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. / 59 Temple
* Place, Suite 330 / Boston, MA 02111-1307 / USA.
*
* ===============================================================================
*/

package org.infoglue.deliver.taglib.common;

import java.util.Iterator;
import java.util.List;

import javax.servlet.jsp.JspException;

import org.apache.log4j.Logger;
import org.infoglue.cms.entities.content.ContentVO;
import org.infoglue.cms.providers.ComponentModel;
import org.infoglue.deliver.taglib.TemplateControllerTag;

public class IncludeTag extends TemplateControllerTag 
{
	private static final long serialVersionUID = 4050206323348354355L;
	
	private final static Logger logger = Logger.getLogger(IncludeTag.class.getName());
	
	private Integer contentId;
	private String relationAttributeName;
	private String contentName;
	private Integer repositoryId = null;
	private String contentPath = null;
	private String template;
	private boolean useAttributeLanguageFallback = true;
	private boolean useSubContext = false;
	
    public IncludeTag()
    {
        super();
    }

	public int doEndTag() throws JspException
    {
		try
        {
			String componentModelClassName = null;
			
			String renderDescription = null;
		    if(contentId == null)
		    {
		    	if(contentPath != null && contentPath.length() > 0)
		    	{
		    		if(repositoryId == null)
		    		{
		    			repositoryId = getController().getContent(this.getController().getComponentLogic().getInfoGlueComponent().getContentId()).getRepositoryId();
		    		}
		    		ContentVO contentVO = getController().getContentWithPath(repositoryId, contentPath);
		    		if(contentVO != null)
		    			contentId = contentVO.getId();
		    	}
		    	else
		    	{
			    	Integer componentContentId = this.getController().getComponentLogic().getIncludedComponentContentId();
					if(componentContentId == null)
					{
						logger.info("No includedComponentContentId in includeTag - lets look in attributes");
						componentContentId = (Integer)getController().getHttpServletRequest().getAttribute("includedComponentContentId");
					}
					if(componentContentId == null)
						componentContentId = this.getController().getComponentLogic().getInfoGlueComponent().getContentId();
	
				    List relatedContents = this.getController().getRelatedContents(componentContentId, relationAttributeName, useAttributeLanguageFallback);
	
				    Iterator i = relatedContents.iterator();
				    while(i.hasNext())
				    {
				        ContentVO contentVO = (ContentVO)i.next();
				        if(contentVO.getName().equalsIgnoreCase(contentName))
		                {
				        	renderDescription = ""+contentVO.getName();
				            contentId = contentVO.getId();
				            break;
		                }
				    }
		    	}

			    template = this.getController().getContentAttributeUsingLanguageFallback(contentId, "Template", true);
			    componentModelClassName = this.getController().getContentAttributeUsingLanguageFallback(contentId, "ModelClassName", true);
		    }
		    else
		    {
		        template = this.getController().getContentAttributeUsingLanguageFallback(contentId, "Template", true);
			    componentModelClassName = this.getController().getContentAttributeUsingLanguageFallback(contentId, "ModelClassName", true);
		    }
		    
			logger.info("componentModelClassName:" + componentModelClassName);
			if(componentModelClassName != null && !componentModelClassName.equals(""))
			{
				try
				{
					ComponentModel componentModel = (ComponentModel)loadExtensionClass(componentModelClassName).newInstance();;
					componentModel.prepare(template, this.getController(), this.getController().getComponentLogic().getInfoGlueComponent().getModel());
				}
				catch (Exception e) 
				{
					logger.error("The component '" + this.getController().getComponentLogic().getInfoGlueComponent().getName() + "' stated that class: " + componentModelClassName + " should be used as model. An exception was thrown when it was invoked: " + e.getMessage(), e);	
				}
			}
			
		    String result = this.getController().renderString(template, contentId, this.useSubContext, renderDescription);
		    produceResult(result);
        } 
		catch (Exception e)
        {
			logger.error("Error including: " + e.getMessage(), e);
            produceResult("");
        }
		
		this.contentId = null;
		this.relationAttributeName = null;
		this.contentName = null;
		this.template = null;
		this.useAttributeLanguageFallback = true;
		this.useSubContext = false;
		this.repositoryId = null;
		this.contentPath = null;
		
        return EVAL_PAGE;
    }

    public void setTemplate(String template) throws JspException
    {
        this.contentId = null;
        this.template = evaluateString("includeTag", "template", template);
    }
    
    public void setContentId(String contentId) throws JspException
    {
        this.contentId = evaluateInteger("includeTag", "contentId", contentId);
    }
    
    public void setRelationAttributeName(String relationAttributeName) throws JspException
    {
        this.contentId = null;
        this.relationAttributeName = evaluateString("includeTag", "relationAttributeName", relationAttributeName);
    }

    public void setContentName(String contentName) throws JspException
    {
        this.contentId = null;
        this.contentName = evaluateString("includeTag", "contentName", contentName);
    }

    public void setContentPath(String contentPath) throws JspException
    {
        this.contentPath = evaluateString("includeTag", "contentPath", contentPath);
    }

    public void setRepositoryId(String repositoryId) throws JspException
    {
        this.repositoryId = evaluateInteger("includeTag", "repositoryId", repositoryId);
    }

    public void setUseAttributeLanguageFallback(boolean useAttributeLanguageFallback) throws JspException
    {
        this.useAttributeLanguageFallback = useAttributeLanguageFallback;
    }

    public void setUseSubContext(boolean useSubContext) throws JspException
    {
        this.useSubContext = useSubContext;
    }
}