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

Example 21 with Expression

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

the class FuncExtFunction method fixupVariables.

/**
   * This function is used to fixup variables from QNames to stack frame
   * indexes at stylesheet build time.
   * @param vars List of QNames that correspond to variables.  This list
   * should be searched backwards for the first qualified name that
   * corresponds to the variable reference qname.  The position of the
   * QName in the vector from the start of the vector will be its position
   * in the stack frame (but variables above the globalsTop value will need
   * to be offset to the current stack frame).
   * NEEDSDOC @param globalsSize
   */
public void fixupVariables(java.util.Vector vars, int globalsSize) {
    if (null != m_argVec) {
        int nArgs = m_argVec.size();
        for (int i = 0; i < nArgs; i++) {
            Expression arg = (Expression) m_argVec.elementAt(i);
            arg.fixupVariables(vars, globalsSize);
        }
    }
}

Example 22 with Expression

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

the class ElemValueOf method execute.

/**
   * Execute the string expression and copy the text to the
   * result tree.
   * The required select attribute is an expression; this expression
   * is evaluated and the resulting object is converted to a string
   * as if by a call to the string function. The string specifies
   * the string-value of the created text node. If the string is
   * empty, no text node will be created. The created text node will
   * be merged with any adjacent text nodes.
   * @see <a href="http://www.w3.org/TR/xslt#value-of">value-of in XSLT Specification</a>
   *
   * @param transformer non-null reference to the the current transform-time state.
   *
   * @throws TransformerException
   */
public void execute(TransformerImpl transformer) throws TransformerException {
    XPathContext xctxt = transformer.getXPathContext();
    SerializationHandler rth = transformer.getResultTreeHandler();
    try {
        // Optimize for "."
        xctxt.pushNamespaceContext(this);
        int current = xctxt.getCurrentNode();
        xctxt.pushCurrentNodeAndExpression(current, current);
        if (m_disableOutputEscaping)
            rth.processingInstruction(javax.xml.transform.Result.PI_DISABLE_OUTPUT_ESCAPING, "");
        try {
            Expression expr = m_selectExpression.getExpression();
            expr.executeCharsToContentHandler(xctxt, rth);
        } finally {
            if (m_disableOutputEscaping)
                rth.processingInstruction(javax.xml.transform.Result.PI_ENABLE_OUTPUT_ESCAPING, "");
            xctxt.popNamespaceContext();
            xctxt.popCurrentNodeAndExpression();
        }
    } catch (SAXException se) {
        throw new TransformerException(se);
    } catch (RuntimeException re) {
        TransformerException te = new TransformerException(re);
        te.setLocator(this);
        throw te;
    }
}

Example 23 with Expression

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

the class RedundentExprEliminator method oldFindAndEliminateRedundant.

/**
   * To be removed.
   */
protected int oldFindAndEliminateRedundant(int start, int firstOccuranceIndex, ExpressionOwner firstOccuranceOwner, ElemTemplateElement psuedoVarRecipient, Vector paths) throws org.w3c.dom.DOMException {
    QName uniquePseudoVarName = null;
    boolean foundFirst = false;
    int numPathsFound = 0;
    int n = paths.size();
    Expression expr1 = firstOccuranceOwner.getExpression();
    if (DEBUG)
        assertIsLocPathIterator(expr1, firstOccuranceOwner);
    boolean isGlobal = (paths == m_absPaths);
    LocPathIterator lpi = (LocPathIterator) expr1;
    for (int j = start; j < n; j++) {
        ExpressionOwner owner2 = (ExpressionOwner) paths.elementAt(j);
        if (null != owner2) {
            Expression expr2 = owner2.getExpression();
            boolean isEqual = expr2.deepEquals(lpi);
            if (isEqual) {
                LocPathIterator lpi2 = (LocPathIterator) expr2;
                if (!foundFirst) {
                    foundFirst = true;
                    // Insert variable decl into psuedoVarRecipient
                    // We want to insert this into the first legitimate 
                    // position for a variable.
                    ElemVariable var = createPseudoVarDecl(psuedoVarRecipient, lpi, isGlobal);
                    if (null == var)
                        return 0;
                    uniquePseudoVarName = var.getName();
                    changeToVarRef(uniquePseudoVarName, firstOccuranceOwner, paths, psuedoVarRecipient);
                    // Replace the first occurance with the variable's XPath, so  
                    // that further reduction may take place if needed.
                    paths.setElementAt(var.getSelect(), firstOccuranceIndex);
                    numPathsFound++;
                }
                changeToVarRef(uniquePseudoVarName, owner2, paths, psuedoVarRecipient);
                // Null out the occurance, so we don't have to test it again.
                paths.setElementAt(null, j);
                // foundFirst = true;
                numPathsFound++;
            }
        }
    }
    // Change all globals in xsl:templates, etc, to global vars no matter what.
    if ((0 == numPathsFound) && (paths == m_absPaths)) {
        ElemVariable var = createPseudoVarDecl(psuedoVarRecipient, lpi, true);
        if (null == var)
            return 0;
        uniquePseudoVarName = var.getName();
        changeToVarRef(uniquePseudoVarName, firstOccuranceOwner, paths, psuedoVarRecipient);
        paths.setElementAt(var.getSelect(), firstOccuranceIndex);
        numPathsFound++;
    }
    return numPathsFound;
}

Example 24 with Expression

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

the class TemplateList method setTemplate.

/**
   * Add a template to the table of named templates and/or the table of templates
   * with match patterns.  This routine should
   * be called in decreasing order of precedence but it checks nonetheless.
   *
   * @param template
   */
public void setTemplate(ElemTemplate template) {
    XPath matchXPath = template.getMatch();
    if (null == template.getName() && null == matchXPath) {
        template.error(XSLTErrorResources.ER_NEED_NAME_OR_MATCH_ATTRIB, new Object[] { "xsl:template" });
    }
    if (null != template.getName()) {
        ElemTemplate existingTemplate = (ElemTemplate) m_namedTemplates.get(template.getName());
        if (null == existingTemplate) {
            m_namedTemplates.put(template.getName(), template);
        } else {
            int existingPrecedence = existingTemplate.getStylesheetComposed().getImportCountComposed();
            int newPrecedence = template.getStylesheetComposed().getImportCountComposed();
            if (newPrecedence > existingPrecedence) {
                // This should never happen
                m_namedTemplates.put(template.getName(), template);
            } else if (newPrecedence == existingPrecedence)
                template.error(XSLTErrorResources.ER_DUPLICATE_NAMED_TEMPLATE, new Object[] { template.getName() });
        }
    }
    if (null != matchXPath) {
        Expression matchExpr = matchXPath.getExpression();
        if (matchExpr instanceof StepPattern) {
            insertPatternInTable((StepPattern) matchExpr, template);
        } else if (matchExpr instanceof UnionPattern) {
            UnionPattern upat = (UnionPattern) matchExpr;
            StepPattern[] pats = upat.getPatterns();
            int n = pats.length;
            for (int i = 0; i < n; i++) {
                insertPatternInTable(pats[i], template);
            }
        } else {
        // TODO: assert error
        }
    }
}

Example 25 with Expression

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

the class XUnresolvedVariableSimple method execute.

/**
   * For support of literal objects in xpaths.
   *
   * @param xctxt The XPath execution context.
   *
   * @return This object.
   *
   * @throws javax.xml.transform.TransformerException
   */
public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException {
    Expression expr = ((ElemVariable) m_obj).getSelect().getExpression();
    XObject xobj = expr.execute(xctxt);
    xobj.allowDetachToRelease(false);
    return xobj;
}