Example usage for org.apache.commons.jxpath JXPathContext getPrefix

Introduction

In this page you can find the example usage for org.apache.commons.jxpath JXPathContext getPrefix.

Prototype

public String getPrefix(String namespaceURI) 

Source Link

Document

Get the prefix associated with the specifed namespace URI.

Usage

From source file:org.xchain.example.namespaces.xhtml.OptionCommand.java

public boolean execute(JXPathContext context) throws Exception {
    String value = getValue(context);
    String currentValue = (String) ((ScopedQNameVariables) context.getVariables())
            .getVariable(SelectCommand.SELECTED_VARIABLE_NAME, Scope.execution);

    // get the xhtml prefix and make sure that there is a mapping for it.
    String xhtmlPrefix = context.getPrefix(XHTML_NAMESPACE);
    if (xhtmlPrefix == null) {
        throw new IllegalStateException("There is no mapping defined for " + XHTML_NAMESPACE);
    }/*  w ww . j  a va 2 s .  c o m*/

    AttributesImpl attributes = new AttributesImpl();
    if (value != null) {
        attributes.addAttribute("", VALUE_LOCAL_NAME, VALUE_LOCAL_NAME, "CDATA", value);
    }
    if (value != null && value.equals(currentValue)) {
        attributes.addAttribute("", SELECTED_LOCAL_NAME, SELECTED_LOCAL_NAME, "CDATA", SELECTED_VALUE);
    }

    ContentHandler handler = getContentHandler();
    handler.startElement(XHTML_NAMESPACE, OPTION_LOCAL_NAME, qNameString(xhtmlPrefix, OPTION_LOCAL_NAME),
            attributes);

    boolean result = false;
    Exception exception = null;

    try {
        result = super.execute(context);
    } catch (Exception e) {
        exception = e;
    }
    if (exception == null || !(exception instanceof SAXException)) {
        handler.endElement(XHTML_NAMESPACE, OPTION_LOCAL_NAME, qNameString(xhtmlPrefix, OPTION_LOCAL_NAME));
    }

    if (exception != null) {
        throw exception;
    }
    return result;
}

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From source file:org.xchain.example.namespaces.xhtml.SelectCommand.java

public boolean execute(JXPathContext context) throws Exception {
    // get the request and the name from the context.
    HttpServletRequest request = getRequest(context);
    String name = getName(context);

    // get the original value of the name.
    String currentValue = request.getParameter(name);

    // get the xhtml prefix and make sure that there is a mapping for it.
    String xhtmlPrefix = context.getPrefix(XHTML_NAMESPACE);
    if (xhtmlPrefix == null) {
        throw new IllegalStateException("There is no mapping defined for " + XHTML_NAMESPACE);
    }/*from  w ww  .  jav a2  s  . co m*/

    // create the attributes for the element we are going to output.
    AttributesImpl attributes = new AttributesImpl();
    if (hasId()) {
        attributes.addAttribute("", ID_LOCAL_NAME, ID_LOCAL_NAME, "CDATA", getId(context));
    }
    attributes.addAttribute("", NAME_LOCAL_NAME, NAME_LOCAL_NAME, "CDATA", getName(context));

    ((ScopedQNameVariables) context.getVariables()).declareVariable(SELECTED_VARIABLE_NAME, currentValue,
            Scope.execution);
    ContentHandler handler = getContentHandler();
    handler.startElement(XHTML_NAMESPACE, SELECT_LOCAL_NAME, qNameString(xhtmlPrefix, SELECT_LOCAL_NAME),
            attributes);

    boolean result = false;
    Exception exception = null;

    // execute the children and catch any exceptions.
    try {
        result = super.execute(context);
    } catch (Exception e) {
        exception = e;
    }

    // if there was not an exception, or the exception is not a sax exception, then we need to finish the output.
    if (exception == null || !(exception instanceof SAXException)) {
        handler.endElement(XHTML_NAMESPACE, SELECT_LOCAL_NAME, qNameString(xhtmlPrefix, SELECT_LOCAL_NAME));
    }

    // rethrow the exception.
    if (exception != null) {
        throw exception;
    }
    return result;
}

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From source file:org.xchain.examples.tutorial.TraceUtil.java

public static String xhtmlPrefix(JXPathContext context) throws SAXException {
    String prefix = context.getPrefix(XHTML_NAMESPACE_URI);
    if (prefix == null) {
        throw new SAXException("The namespace '" + XHTML_NAMESPACE_URI + "' must be bound to a prefix.");
    }//from www.j  a  va2 s.  co  m
    return prefix;
}

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