FW: dynamic component example / question

[Макаров Роман]

I thought I may use date as an indicator, so the cached parsed template will 
reset if this date changes (the code is below). It looks like I mistaken, and 
the “toUrl” method should return null, right?
But this is not solving my problem. StringResource implementation is very 
simply, I do not see where the issue can persist.
Regarding ClasspathResource, is this the same as using ordinary tapestry 
mechanism? If yes, then it works.



/**
* The class is for use with DynamicTemplateParser
*
* Created with IntelliJ IDEA.
* User: r.makarov
* Date: 05.09.14
* Time: 17:40
*/
public class StringResource implements Resource {

    private String tml;
    private URL cacheKey;

    /**
     * @param tml - template to be rendered
     * @param lastModificationTime - parameter to watch, to reset cache it 
changes
     */
    public StringResource(String tml, Date lastModificationTime) {
        this.tml = tml;
        try {
            this.cacheKey = new URL("http://dynamic/"; + 
lastModificationTime.getTime());
        } catch (MalformedURLException e) {
            this.cacheKey = null;
        }
    }

    @Override
    public boolean exists() {
        return false;
    }

    @Override
    public InputStream openStream() throws IOException {
        return new ByteArrayInputStream(tml.getBytes("UTF-8"));
    }

    @Override
    public URL toURL() {
        return cacheKey;
    }

    @Override
    public Resource forLocale(Locale locale) {
        return null;
    }

    @Override
    public Resource forFile(String relativePath) {
        return null;
    }

    @Override
    public Resource withExtension(String extension) {
        return null;
    }

    @Override
    public String getFolder() {
        return null;
    }

    @Override
    public String getFile() {
        return null;
    }

    @Override
    public String getPath() {
        return null;
    }
}

From: Lance Java [mailto:lance.j...@googlemail.com]
Sent: Monday, September 08, 2014 12:13 PM
To: Макаров Роман
Subject: Re: dynamic component example / question


Try getting it working first with ClasspathResource and a file on the 
classpath. If that works, it's probably an issue with your StringResource.

What's the date for?
On 8 Sep 2014 07:40, "Макаров Роман" 
<roman.maka...@kupivip.ru<mailto:roman.maka...@kupivip.ru>> wrote:
Hello all!

The dynamic component almost works for me. But in the output it is erroneously 
giving me “container” tag. How can I get rid of it?


The output:

<container 
xmlns="http://tapestry.apache.org/schema/tapestry_5_3.xsd";>uuuuuuuu</container>


The code:

package ru.kupivip.ecommerce.components;

import org.apache.tapestry5.annotations.Property;
import org.apache.tapestry5.ioc.annotations.InjectService;
import org.apache.tapestry5.services.dynamic.DynamicTemplate;
import org.apache.tapestry5.services.dynamic.DynamicTemplateParser;
import ru.kupivip.utils.StringResource;

import java.util.Date;

/**
* Created with IntelliJ IDEA.
* User: r.makarov
* Date: 04.09.14
* Time: 15:03
*/
public class TrackerDynamic extends Tracker {


    @Property
    private DynamicTemplate dynamicTemplate;

    public String getTestString() {
        return "uuuuuuuu";
    }

    @InjectService("DynamicTemplateParser")
    DynamicTemplateParser dynamicTemplateParser;

    private String getTemplateString() {
        StringBuilder sb = new StringBuilder(
                "<t:container 
xmlns:t=\"http://tapestry.apache.org/schema/tapestry_5_3.xsd\<http://tapestry.apache.org/schema/tapestry_5_3.xsd%5C>"
 xmlns:p=\"tapestry:parameter\">");
        sb.append("${getTestString()}");
        sb.append("</t:container>");
        return sb.toString();
    }

    @Override
    void beginRender() {
        super.beginRender();

        dynamicTemplate = dynamicTemplateParser.parseTemplate(
                new StringResource(getTemplateString(), new Date())
        );

    }
}