Examples with XPathContext org.apache.xpath.XPathContext used on opensource projects

Example 66 with XPathContext

use of org.apache.xpath.XPathContext in project robovm by robovm.

the class UnionChildIterator method acceptNode.

/**
   * Test whether a specified node is visible in the logical view of a
   * TreeWalker or NodeIterator. This function will be called by the
   * implementation of TreeWalker and NodeIterator; it is not intended to
   * be called directly from user code.
   * @param n  The node to check to see if it passes the filter or not.
   * @return  a constant to determine whether the node is accepted,
   *   rejected, or skipped, as defined  above .
   */
public short acceptNode(int n) {
    XPathContext xctxt = getXPathContext();
    try {
        xctxt.pushCurrentNode(n);
        for (int i = 0; i < m_nodeTests.length; i++) {
            PredicatedNodeTest pnt = m_nodeTests[i];
            XObject score = pnt.execute(xctxt, n);
            if (score != NodeTest.SCORE_NONE) {
                // Note that we are assuming there are no positional predicates!
                if (pnt.getPredicateCount() > 0) {
                    if (pnt.executePredicates(n, xctxt))
                        return DTMIterator.FILTER_ACCEPT;
                } else
                    return DTMIterator.FILTER_ACCEPT;
            }
        }
    } catch (javax.xml.transform.TransformerException se) {
        // TODO: Fix this.
        throw new RuntimeException(se.getMessage());
    } finally {
        xctxt.popCurrentNode();
    }
    return DTMIterator.FILTER_SKIP;
}

Example 67 with XPathContext

use of org.apache.xpath.XPathContext in project nokogiri by sparklemotion.

the class XmlXpathContext method getXPathContext.

private XPathContext getXPathContext(final NokogiriXPathFunctionResolver fnResolver) {
    Node doc = context.getNode().getOwnerDocument();
    if (doc == null)
        doc = context.getNode();
    XPathContext xpathContext = (XPathContext) doc.getUserData(XPATH_CONTEXT);
    if (xpathContext == null) {
        xpathContext = newXPathContext(fnResolver);
        if (variableResolver == null) {
            // NOTE: only caching without variables - could be improved by more sophisticated caching
            doc.setUserData(XPATH_CONTEXT, xpathContext, null);
        }
    } else {
        Object owner = xpathContext.getOwnerObject();
        if ((owner == null && fnResolver == null) || (owner instanceof JAXPExtensionsProvider && ((JAXPExtensionsProvider) owner).hasSameResolver(fnResolver))) {
            // can be re-used assuming it has the same variable-stack (for now only cached if no variables)
            if (variableResolver == null)
                return xpathContext;
        }
        // otherwise we can not use the cached xpath-context
        xpathContext = newXPathContext(fnResolver);
    }
    if (variableResolver != null) {
        xpathContext.setVarStack(new JAXPVariableStack(variableResolver));
    }
    return xpathContext;
}

Example 68 with XPathContext

use of org.apache.xpath.XPathContext in project robovm by robovm.

the class TransformerImpl method transformNode.

/**
   * Process the source node to the output result, if the
   * processor supports the "http://xml.org/trax/features/dom/input"
   * feature.
   * %REVIEW% Do we need a Node version of this?
   * @param node  The input source node, which can be any valid DTM node.
   *
   * @throws TransformerException
   */
public void transformNode(int node) throws TransformerException {
    //dml
    setExtensionsTable(getStylesheet());
    // Make sure we're not writing to the same output content handler.
    synchronized (m_serializationHandler) {
        m_hasBeenReset = false;
        XPathContext xctxt = getXPathContext();
        DTM dtm = xctxt.getDTM(node);
        try {
            pushGlobalVars(node);
            // ==========
            // Give the top-level templates a chance to pass information into 
            // the context (this is mainly for setting up tables for extensions).
            StylesheetRoot stylesheet = this.getStylesheet();
            int n = stylesheet.getGlobalImportCount();
            for (int i = 0; i < n; i++) {
                StylesheetComposed imported = stylesheet.getGlobalImport(i);
                int includedCount = imported.getIncludeCountComposed();
                for (int j = -1; j < includedCount; j++) {
                    Stylesheet included = imported.getIncludeComposed(j);
                    included.runtimeInit(this);
                    for (ElemTemplateElement child = included.getFirstChildElem(); child != null; child = child.getNextSiblingElem()) {
                        child.runtimeInit(this);
                    }
                }
            }
            // ===========        
            // System.out.println("Calling applyTemplateToNode - "+Thread.currentThread().getName());
            DTMIterator dtmIter = new org.apache.xpath.axes.SelfIteratorNoPredicate();
            dtmIter.setRoot(node, xctxt);
            xctxt.pushContextNodeList(dtmIter);
            try {
                this.applyTemplateToNode(null, null, node);
            } finally {
                xctxt.popContextNodeList();
            }
            // System.out.println("Done with applyTemplateToNode - "+Thread.currentThread().getName());
            if (null != m_serializationHandler) {
                m_serializationHandler.endDocument();
            }
        } catch (Exception se) {
            // SAXSourceLocator
            while (se instanceof org.apache.xml.utils.WrappedRuntimeException) {
                Exception e = ((org.apache.xml.utils.WrappedRuntimeException) se).getException();
                if (null != e)
                    se = e;
            }
            if (null != m_serializationHandler) {
                try {
                    if (se instanceof org.xml.sax.SAXParseException)
                        m_serializationHandler.fatalError((org.xml.sax.SAXParseException) se);
                    else if (se instanceof TransformerException) {
                        TransformerException te = ((TransformerException) se);
                        SAXSourceLocator sl = new SAXSourceLocator(te.getLocator());
                        m_serializationHandler.fatalError(new org.xml.sax.SAXParseException(te.getMessage(), sl, te));
                    } else {
                        m_serializationHandler.fatalError(new org.xml.sax.SAXParseException(se.getMessage(), new SAXSourceLocator(), se));
                    }
                } catch (Exception e) {
                }
            }
            if (se instanceof TransformerException) {
                m_errorHandler.fatalError((TransformerException) se);
            } else if (se instanceof org.xml.sax.SAXParseException) {
                m_errorHandler.fatalError(new TransformerException(se.getMessage(), new SAXSourceLocator((org.xml.sax.SAXParseException) se), se));
            } else {
                m_errorHandler.fatalError(new TransformerException(se));
            }
        } finally {
            this.reset();
        }
    }
}

Example 69 with XPathContext

use of org.apache.xpath.XPathContext in project robovm by robovm.

the class TransformerImpl method processSortKeys.

/**
   * Get the keys for the xsl:sort elements.
   * Note: Should this go into ElemForEach?
   *
   * @param foreach Valid ElemForEach element, not null.
   * @param sourceNodeContext The current node context in the source tree,
   * needed to evaluate the Attribute Value Templates.
   *
   * @return A Vector of NodeSortKeys, or null.
   *
   * @throws TransformerException
   * @xsl.usage advanced
   */
public Vector processSortKeys(ElemForEach foreach, int sourceNodeContext) throws TransformerException {
    Vector keys = null;
    XPathContext xctxt = m_xcontext;
    int nElems = foreach.getSortElemCount();
    if (nElems > 0)
        keys = new Vector();
    // March backwards, collecting the sort keys.
    for (int i = 0; i < nElems; i++) {
        ElemSort sort = foreach.getSortElem(i);
        String langString = (null != sort.getLang()) ? sort.getLang().evaluate(xctxt, sourceNodeContext, foreach) : null;
        String dataTypeString = sort.getDataType().evaluate(xctxt, sourceNodeContext, foreach);
        if (dataTypeString.indexOf(":") >= 0)
            System.out.println("TODO: Need to write the hooks for QNAME sort data type");
        else if (!(dataTypeString.equalsIgnoreCase(Constants.ATTRVAL_DATATYPE_TEXT)) && !(dataTypeString.equalsIgnoreCase(Constants.ATTRVAL_DATATYPE_NUMBER)))
            foreach.error(XSLTErrorResources.ER_ILLEGAL_ATTRIBUTE_VALUE, new Object[] { Constants.ATTRNAME_DATATYPE, dataTypeString });
        boolean treatAsNumbers = ((null != dataTypeString) && dataTypeString.equals(Constants.ATTRVAL_DATATYPE_NUMBER)) ? true : false;
        String orderString = sort.getOrder().evaluate(xctxt, sourceNodeContext, foreach);
        if (!(orderString.equalsIgnoreCase(Constants.ATTRVAL_ORDER_ASCENDING)) && !(orderString.equalsIgnoreCase(Constants.ATTRVAL_ORDER_DESCENDING)))
            foreach.error(XSLTErrorResources.ER_ILLEGAL_ATTRIBUTE_VALUE, new Object[] { Constants.ATTRNAME_ORDER, orderString });
        boolean descending = ((null != orderString) && orderString.equals(Constants.ATTRVAL_ORDER_DESCENDING)) ? true : false;
        AVT caseOrder = sort.getCaseOrder();
        boolean caseOrderUpper;
        if (null != caseOrder) {
            String caseOrderString = caseOrder.evaluate(xctxt, sourceNodeContext, foreach);
            if (!(caseOrderString.equalsIgnoreCase(Constants.ATTRVAL_CASEORDER_UPPER)) && !(caseOrderString.equalsIgnoreCase(Constants.ATTRVAL_CASEORDER_LOWER)))
                foreach.error(XSLTErrorResources.ER_ILLEGAL_ATTRIBUTE_VALUE, new Object[] { Constants.ATTRNAME_CASEORDER, caseOrderString });
            caseOrderUpper = ((null != caseOrderString) && caseOrderString.equals(Constants.ATTRVAL_CASEORDER_UPPER)) ? true : false;
        } else {
            caseOrderUpper = false;
        }
        keys.addElement(new NodeSortKey(this, sort.getSelect(), treatAsNumbers, descending, langString, caseOrderUpper, foreach));
    }
    return keys;
}

Example 70 with XPathContext

use of org.apache.xpath.XPathContext in project robovm by robovm.

the class TransformerImpl method executeChildTemplates.

/**
   * Execute each of the children of a template element.
   *
   * @param elem The ElemTemplateElement that contains the children
   * that should execute.
   * @param shouldAddAttrs true if xsl:attributes should be executed.
   *
   * @throws TransformerException
   * @xsl.usage advanced
   */
public void executeChildTemplates(ElemTemplateElement elem, boolean shouldAddAttrs) throws TransformerException {
    // Does this element have any children?
    ElemTemplateElement t = elem.getFirstChildElem();
    if (null == t)
        return;
    if (elem.hasTextLitOnly() && m_optimizer) {
        char[] chars = ((ElemTextLiteral) t).getChars();
        try {
            // Have to push stuff on for tooling...
            this.pushElemTemplateElement(t);
            m_serializationHandler.characters(chars, 0, chars.length);
        } catch (SAXException se) {
            throw new TransformerException(se);
        } finally {
            this.popElemTemplateElement();
        }
        return;
    }
    //    // Check for infinite loops if we have to.
    //    boolean check = (m_stackGuard.m_recursionLimit > -1);
    //
    //    if (check)
    //      getStackGuard().push(elem, xctxt.getCurrentNode());
    XPathContext xctxt = m_xcontext;
    xctxt.pushSAXLocatorNull();
    int currentTemplateElementsTop = m_currentTemplateElements.size();
    m_currentTemplateElements.push(null);
    try {
        // each of them.
        for (; t != null; t = t.getNextSiblingElem()) {
            if (!shouldAddAttrs && t.getXSLToken() == Constants.ELEMNAME_ATTRIBUTE)
                continue;
            xctxt.setSAXLocator(t);
            m_currentTemplateElements.setElementAt(t, currentTemplateElementsTop);
            t.execute(this);
        }
    } catch (RuntimeException re) {
        TransformerException te = new TransformerException(re);
        te.setLocator(t);
        throw te;
    } finally {
        m_currentTemplateElements.pop();
        xctxt.popSAXLocator();
    }
// Check for infinite loops if we have to
//    if (check)
//      getStackGuard().pop();
}