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

Example 41 with XPathContext

use of org.apache.xpath.XPathContext in project j2objc by google.

the class PredicatedNodeTest method acceptNode.

//=============== NodeFilter Implementation ===============
/**
   *  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 = m_lpi.getXPathContext();
    try {
        xctxt.pushCurrentNode(n);
        XObject score = execute(xctxt, n);
        // System.out.println("\n::acceptNode - score: "+score.num()+"::");
        if (score != NodeTest.SCORE_NONE) {
            if (getPredicateCount() > 0) {
                countProximityPosition(0);
                if (!executePredicates(n, xctxt))
                    return DTMIterator.FILTER_SKIP;
            }
            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 42 with XPathContext

use of org.apache.xpath.XPathContext in project j2objc by google.

the class TransformerImpl method applyTemplateToNode.

/**
   * Given an element and mode, find the corresponding
   * template and process the contents.
   *
   * @param xslInstruction The calling element.
   * @param template The template to use if xsl:for-each, current template for apply-imports, or null.
   * @param child The source context node.
   * @throws TransformerException
   * @return true if applied a template, false if not.
   * @xsl.usage advanced
   */
public // xsl:apply-templates or xsl:for-each
boolean applyTemplateToNode(// xsl:apply-templates or xsl:for-each
ElemTemplateElement xslInstruction, ElemTemplate template, int child) throws TransformerException {
    DTM dtm = m_xcontext.getDTM(child);
    short nodeType = dtm.getNodeType(child);
    boolean isDefaultTextRule = false;
    boolean isApplyImports = false;
    isApplyImports = ((xslInstruction == null) ? false : xslInstruction.getXSLToken() == Constants.ELEMNAME_APPLY_IMPORTS);
    if (null == template || isApplyImports) {
        int maxImportLevel, endImportLevel = 0;
        if (isApplyImports) {
            maxImportLevel = template.getStylesheetComposed().getImportCountComposed() - 1;
            endImportLevel = template.getStylesheetComposed().getEndImportCountComposed();
        } else {
            maxImportLevel = -1;
        }
        // We want to match -no- templates. See bugzilla bug 1170.
        if (isApplyImports && (maxImportLevel == -1)) {
            template = null;
        } else {
            // Find the XSL template that is the best match for the 
            // element.        
            XPathContext xctxt = m_xcontext;
            try {
                xctxt.pushNamespaceContext(xslInstruction);
                QName mode = this.getMode();
                if (isApplyImports)
                    template = m_stylesheetRoot.getTemplateComposed(xctxt, child, mode, maxImportLevel, endImportLevel, m_quietConflictWarnings, dtm);
                else
                    template = m_stylesheetRoot.getTemplateComposed(xctxt, child, mode, m_quietConflictWarnings, dtm);
            } finally {
                xctxt.popNamespaceContext();
            }
        }
        // See http://www.w3.org/TR/xslt#built-in-rule.
        if (null == template) {
            switch(nodeType) {
                case DTM.DOCUMENT_FRAGMENT_NODE:
                case DTM.ELEMENT_NODE:
                    template = m_stylesheetRoot.getDefaultRule();
                    break;
                case DTM.CDATA_SECTION_NODE:
                case DTM.TEXT_NODE:
                case DTM.ATTRIBUTE_NODE:
                    template = m_stylesheetRoot.getDefaultTextRule();
                    isDefaultTextRule = true;
                    break;
                case DTM.DOCUMENT_NODE:
                    template = m_stylesheetRoot.getDefaultRootRule();
                    break;
                default:
                    // No default rules for processing instructions and the like.
                    return false;
            }
        }
    }
    // the value directly to the result tree.
    try {
        pushElemTemplateElement(template);
        m_xcontext.pushCurrentNode(child);
        pushPairCurrentMatched(template, child);
        // Fix copy copy29 test.
        if (!isApplyImports) {
            DTMIterator cnl = new org.apache.xpath.NodeSetDTM(child, m_xcontext.getDTMManager());
            m_xcontext.pushContextNodeList(cnl);
        }
        if (isDefaultTextRule) {
            switch(nodeType) {
                case DTM.CDATA_SECTION_NODE:
                case DTM.TEXT_NODE:
                    ClonerToResultTree.cloneToResultTree(child, nodeType, dtm, getResultTreeHandler(), false);
                    break;
                case DTM.ATTRIBUTE_NODE:
                    dtm.dispatchCharactersEvents(child, getResultTreeHandler(), false);
                    break;
            }
        } else {
            // And execute the child templates.
            // 9/11/00: If template has been compiled, hand off to it
            // since much (most? all?) of the processing has been inlined.
            // (It would be nice if there was a single entry point that
            // worked for both... but the interpretive system works by
            // having the Tranformer execute the children, while the
            // compiled obviously has to run its own code. It's
            // also unclear that "execute" is really the right name for
            // that entry point.)
            m_xcontext.setSAXLocator(template);
            // m_xcontext.getVarStack().link();
            m_xcontext.getVarStack().link(template.m_frameSize);
            executeChildTemplates(template, true);
        }
    } catch (org.xml.sax.SAXException se) {
        throw new TransformerException(se);
    } finally {
        if (!isDefaultTextRule)
            m_xcontext.getVarStack().unlink();
        m_xcontext.popCurrentNode();
        if (!isApplyImports) {
            m_xcontext.popContextNodeList();
        }
        popCurrentMatched();
        popElemTemplateElement();
    }
    return true;
}

Example 43 with XPathContext

use of org.apache.xpath.XPathContext in project j2objc by google.

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();
}

Example 44 with XPathContext

use of org.apache.xpath.XPathContext in project j2objc by google.

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 45 with XPathContext

use of org.apache.xpath.XPathContext in project j2objc by google.

the class ElemVariable method getValue.

/**
   * Get the XObject representation of the variable.
   *
   * @param transformer non-null reference to the the current transform-time state.
   * @param sourceNode non-null reference to the <a href="http://www.w3.org/TR/xslt#dt-current-node">current source node</a>.
   *
   * @return the XObject representation of the variable.
   *
   * @throws TransformerException
   */
public XObject getValue(TransformerImpl transformer, int sourceNode) throws TransformerException {
    XObject var;
    XPathContext xctxt = transformer.getXPathContext();
    xctxt.pushCurrentNode(sourceNode);
    try {
        if (null != m_selectPattern) {
            var = m_selectPattern.execute(xctxt, sourceNode, this);
            var.allowDetachToRelease(false);
        } else if (null == getFirstChildElem()) {
            var = XString.EMPTYSTRING;
        } else {
            // Use result tree fragment.
            // Global variables may be deferred (see XUnresolvedVariable) and hence
            // need to be assigned to a different set of DTMs than local variables
            // so they aren't popped off the stack on return from a template.
            int df;
            ////// problem in parameters. Needs more study.
            try {
                //////////xctxt.getVarStack().link(0);
                if (// Global variable
                m_parentNode instanceof Stylesheet)
                    df = transformer.transformToGlobalRTF(this);
                else
                    df = transformer.transformToRTF(this);
            } finally {
            //////////////xctxt.getVarStack().unlink(); 
            }
            var = new XRTreeFrag(df, xctxt, this);
        }
    } finally {
        xctxt.popCurrentNode();
    }
    return var;
}