Saving XSLT data generated from XML file

I have a problem while trying to save some data to XML using XSLT. So the problem is that everything looks fine, no exceptions are thrown, the log files are clean as well, but I don't see any changes in the XML file. And I cant Here is my code for saving the output to a file

    Transformer transformer = XslTemplatesPool.getTransformer(SAVE_ITEM, realPath);
    setCategoryAndSubcateory(transformer, request);

    String name = request.getParameter(NAME);
    /*retrieving some more parameters*/
    String price = request.getParameter(PRICE);

    transformer.setParameter(NAME, name);
    /*...*/
    transformer.setParameter(XML_PATH, "E:/xslt/WebContent/xml/shop.xml");

    if (price == null) {
        price = "";
    }
    transformer.setParameter(PRICE, price);
    if (notInStock == null) {
        notInStock = "";
    }
    /*
     * out is an instance of PrintWriter
     * PrintWriter out = httpServletResponse.getWriter()
     */
    transformer.setParameter(NOT_IN_STOCK, notInStock);
    executeWrite(out, readWriteLock, transformer);


    protected void executeWrite(PrintWriter out, ReadWriteLock readWriteLock, Transformer transformer) throws HandledException {

    Source xmlSource = new StreamSource("E:/xslt/WebContent/xml/shop.xml");
    StreamResult result = new StreamResult(out);
    Lock writeLock = readWriteLock.writeLock();
    writeLock.lock();

    try {
        transformer.transform(xmlSource, result);
    } catch (TransformerException e) {
        ExceptionHandler.logAndThrow(e, logger);
    } finally {
        writeLock.unlock();
    }
}

      

        
        
        
      

    

From the XSLT generated addItem form (every world of information I need brings nice and smooth at this point) I am returning some data and trying to add it to an xml file using the saveItem template

<?xml version="1.0" encoding="UTF-8"?>

<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:xs="http://www.example.org/products"
xmlns:redirect="http://xml.apache.org/xalan/redirect"
extension-element-prefixes="redirect"
xmlns:validation="xalan://com.xslt.util.Validator"
exclude-result-prefixes="validation redirect">

<xsl:import href="addItem.xsl" />
<xsl:import href="productsList.xsl" />

<xsl:param name="categoryName" />
<xsl:param name="subcategoryName" />
<xsl:param name="name" />
<xsl:param name="producer" />
<xsl:param name="model" />
<xsl:param name="date-of-issue" />
<xsl:param name="color" />
<xsl:param name="not-in-stock" />
<xsl:param name="price" />
<xsl:param name="xmlPath"/>
<xsl:param name="isValid" select="validation:validate($name, $producer, $model, $date-of-issue, $color, $price, $not-in-stock)" />
<xsl:param name="nameError" select="validation:getNameError()" />
<xsl:param name="producerError" select="validation:getProducerError()" />
<xsl:param name="modelError" select="validation:getModelError()" />
<xsl:param name="dateError" select="validation:getDateError()" />
<xsl:param name="priceError" select="validation:getPriceError()" />
<xsl:param name="colorError" select="validation:getColorError()" />

<xsl:template match="/" priority="2">
    <xsl:choose>
        <xsl:when test="not($isValid)">
            <xsl:call-template name="addItem">
                <xsl:with-param name="nameError" select="$nameError" />
                <xsl:with-param name="producerError" select="$producerError" />
                <xsl:with-param name="modelError" select="$modelError" />
                <xsl:with-param name="dateError" select="$dateError" />
                <xsl:with-param name="priceError" select="$priceError" />
                <xsl:with-param name="colorError" select="$colorError" />
                <xsl:with-param name="not-in-stock" select="$not-in-stock" />
            </xsl:call-template>
        </xsl:when>
        <xsl:otherwise>
            <redirect:write select="$xmlPath">
                <xsl:call-template name="saveItem" />
            </redirect:write>
            <xsl:call-template name="returnToProducts" />
        </xsl:otherwise>
    </xsl:choose>
</xsl:template>

<xsl:template name="saveItem" match="@*|node()" priority="2">
    <xsl:copy>
        <xsl:apply-templates select="@*|node()" />
    </xsl:copy>
</xsl:template>

<xsl:template match="/xs:shop/xs:category[@name=$categoryName]/xs:subcategory[@name=$subcategoryName]">
    <xsl:copy>
        <xsl:apply-templates select="@*|node()" />
        <xsl:element name="xs:product">
            <xsl:attribute name="name">
                <xsl:value-of select="$name" />
            </xsl:attribute>
            <xsl:attribute name="producer">
                <xsl:value-of select="$producer" />
            </xsl:attribute>
            <xsl:attribute name="model">
                <xsl:value-of select="$model" />
            </xsl:attribute>
            <xsl:element name="xs:date-of-issue">
                <xsl:value-of select="$date-of-issue" />
            </xsl:element>
            <xsl:element name="xs:color">
                <xsl:value-of select="$color" />
            </xsl:element>
            <xsl:choose>
                <xsl:when test="$not-in-stock">
                    <xsl:element name="xs:not-in-stock" />
                </xsl:when>
                <xsl:otherwise>
                    <xsl:element name="xs:price">
                        <xsl:value-of select="$price" />
                    </xsl:element>
                </xsl:otherwise>
            </xsl:choose>
        </xsl:element>
    </xsl:copy>
</xsl:template>

<xsl:template name="returnToProducts">
    <html>
        <head>
            <meta http-equiv="refresh" content="0;url=controller.do?command=productsList&amp;categoryName={$categoryName}&amp;subcategoryName={$subcategoryName}" />
        </head>
    </html>
</xsl:template>

</xsl:stylesheet>

      

        
        
        
      

    

example of my XML file

<xs:shop xmlns:xs="http://www.example.org/products" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.example.org/products shop.xsd">    
<xs:category name="bicycle">
    <xs:subcategory name="frame">
        <xs:product name="Soda FR" producer="NS" model="fr445">
            <xs:date-of-issue>10-05-2012</xs:date-of-issue>
            <xs:color>white</xs:color>
            <xs:price>520$</xs:price>
        </xs:product>
        <xs:product name="Nucleon" producer="Nicolai" model="nc428">
            <xs:date-of-issue>10-05-2012</xs:date-of-issue>
            <xs:color>dark grey</xs:color>
            <xs:not-in-stock/>
        </xs:product>
    </xs:subcategory>
</xs:category>
</xs:shop>