Package org.apache.commons.jxpath

Examples of org.apache.commons.jxpath.JXPathContext

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    /**
     * Returns a JXPathContext bound to the "session" scope. Caches that context
     * within the session itself.
     */
    public final JXPathContext getSessionContext(Session session, Context cocoonContext) {
        JXPathContext context = (JXPathContext) session.getAttribute(Constants.JXPATH_CONTEXT);
        if (context == null) {
            if (session.getClass() != HttpSession.class)
                JXPathIntrospector.registerDynamicClass(session.getClass(), CocoonSessionHandler.class);
            JXPathContext parentContext = getApplicationContext(cocoonContext);
            context = factory.newContext(parentContext, session);
            context.setVariables(new KeywordVariables(Constants.SESSION_SCOPE, session));
            session.setAttribute(Constants.JXPATH_CONTEXT, context);
        }
        return context;
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    /**
     * Returns a JXPathContext bound to the "application" scope. Caches that context
     * within the servlet context itself.
     */
    public final JXPathContext getApplicationContext(Context cocoonContext) {
        JXPathContext context = (JXPathContext) cocoonContext.getAttribute(Constants.JXPATH_CONTEXT);
        if (context == null) {
            if (cocoonContext.getClass() != HttpContext.class)
                JXPathIntrospector.registerDynamicClass(cocoonContext.getClass(), CocoonContextHandler.class);
            context = factory.newContext(null, cocoonContext);
            context.setVariables(new KeywordVariables(Constants.APPLICATION_SCOPE, cocoonContext));
            cocoonContext.setAttribute(Constants.JXPATH_CONTEXT, context);
        }
        return context;
    }
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            result.add(root);
            return result;
        }
        else
        {
            JXPathContext context = createContext(root, key);
            List result = context.selectNodes(key);
            return (result != null) ? result : Collections.EMPTY_LIST;
        }
    }
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     * @param key the key to be queried
     * @return the new context
     */
    protected JXPathContext createContext(ConfigurationNode root, String key)
    {
        JXPathContext context = JXPathContext.newContext(root);
        context.setLenient(true);
        return context;
    }
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    /**
     * Tests if the used JXPathContext is correctly initialized.
     */
    public void testCreateContext()
    {
        JXPathContext ctx = new XPathExpressionEngine().createContext(ROOT,
                TEST_KEY);
        assertNotNull("Context is null", ctx);
        assertTrue("Lenient mode is not set", ctx.isLenient());
        assertSame("Incorrect context bean set", ROOT, ctx.getContextBean());

        NodePointerFactory[] factories = JXPathContextReferenceImpl
                .getNodePointerFactories();
        boolean found = false;
        for (int i = 0; i < factories.length; i++)
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            Throwable t = ObjectModelHelper.getThrowable(objectModel);

            Map xPathMap = (Map) exception2XPath.get(exceptionName);
            if (xPathMap != null) {
                // create a context for the thrown exception
                JXPathContext context = JXPathContext.newContext(t);

                for (Iterator iterator = xPathMap.keySet().iterator();
                    iterator.hasNext();
                    ) {
                    String element = (String) iterator.next();
                    if (context.getValue(element).equals(Boolean.TRUE))
                        // return the configured name if the expression is succesfull
                        return xPathMap.get(element);
                }
            }
        }
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                    } catch (Exception exc) {
                        throw new SAXParseException(exc.getMessage(),
                                                        ev.location,
                                                        exc);
                    }
                    JXPathContext localJXPathContext =
                        jxpathContextFactory.newContext(null, value);
                    String path = "";
                    if (contextPath != null) {
                        path = contextPath + "/.";
                    }
                    path += ptr.asPath();
                    execute(consumer,
                            form,
                            currentView,
                            path,
                            localJXPathContext,
                            startRepeat.next,
                            startRepeat.endRepeat);
                }
                ev = startRepeat.endRepeat.next;
                continue;
            } else if (ev instanceof StartGroup) {
                StartGroup startGroup = (StartGroup)ev;
                StartElement startElement = startGroup.startElement;
                consumer.startElement(startElement.namespaceURI,
                                      startElement.localName,
                                      startElement.raw,
                                      startElement.attributes);
                final CompiledExpression ref = startGroup.ref;
                if (ref != null) {
                    Object value;
                    try {
                        value = ref.getValue(jxpathContext);
                    } catch (Exception exc) {
                        throw new SAXParseException(exc.getMessage(),
                                                    ev.location,
                                                    exc);
                    }
                    JXPathContext localJXPathContext =
                        jxpathContextFactory.newContext(null, value);
                    String path = "";
                    if (contextPath != null) {
                        path = contextPath + "/.";
                    }
                    path += startElement.attributes.getValue(REF);
                    execute(consumer,
                            form,
                            currentView,
                            path,
                            localJXPathContext,
                            startGroup.next,
                            startGroup.endGroup);
                    ev = startGroup.endGroup;
                    continue;
                }
            } else if (ev instanceof StartItemSet) {
                StartItemSet startItemSet = (StartItemSet)ev;
                final CompiledExpression nodeset = startItemSet.nodeset;
                Iterator iter = null;
                try {
                    if (nodeset == null) {
                        iter = NULL_ITER;
                    } else {
                        iter =
                            nodeset.iteratePointers(jxpathContext);
                    }
                } catch (Exception exc) {
                    throw new SAXParseException(exc.getMessage(),
                                                ev.location,
                                                exc);
                } catch (Error err) {
                    throw new SAXParseException(err.getMessage(),
                                                ev.location,
                                                null);
                }
                while (iter.hasNext()) {
                    Object value;
                    Pointer ptr = (Pointer)iter.next();
                    try {
                        value = ptr.getNode();
                    } catch (Exception exc) {
                        throw new SAXParseException(exc.getMessage(),
                                                        ev.location,
                                                        exc);
                    }
                    JXPathContext localJXPathContext =
                        jxpathContextFactory.newContext(null, value);
                    AttributesImpl attrs = new AttributesImpl();
                    attrs.addAttribute(NS, "ref", "ref", "CDATA",
                                       ptr.asPath());
                    consumer.startElement(NS, "item", "item",
                                          attrs);
                    String path = "";
                    if (contextPath != null) {
                        path = contextPath + "/.";
                    }
                    path += ptr.asPath();
                    execute(consumer,
                            form,
                            currentView,
                            ptr.asPath(),
                            localJXPathContext,
                            startItemSet.next,
                            startItemSet.endItemSet);
                    consumer.endElement(NS, "item", "item");
                }
                ev = startItemSet.endItemSet.next;
                continue;
            } else if (ev instanceof StartInputControl) {
                //
                // input, textarea, secret, select1, selectMany
                //
                StartInputControl startInputControl =
                    (StartInputControl)ev;
                CompiledExpression ref = startInputControl.ref;
                StartElement startElement = startInputControl.startElement;
                String refStr = startElement.attributes.getValue("ref");
                consumer.startElement(startElement.namespaceURI,
                                      startElement.localName,
                                      startElement.raw,
                                      startElement.attributes);
                if (ref != null) {
                    Iterator iter = ref.iteratePointers(jxpathContext);
                    while (iter.hasNext()) {
                        Pointer ptr = (Pointer)iter.next();
                        AttributesImpl attrs = new AttributesImpl();
                        attrs.addAttribute(NS, REF, REF, "CDATA",
                                           ptr.asPath());
                        consumer.startElement(NS, VALUE, VALUE, EMPTY_ATTRS);
                        Object val = ptr.getNode();
                        String str = String.valueOf(val);
                        consumer.characters(str.toCharArray(), 0, str.length());
                        consumer.endElement(NS, VALUE, VALUE);

                    }
                }
            } else if (ev instanceof EndInputControl) {
                StartInputControl startInputControl =
                    ((EndInputControl)ev).startInputControl;
                StartElement startElement = startInputControl.startElement;
                consumer.endElement(startElement.namespaceURI,
                                    startElement.localName,
                                    startElement.raw);
            } else if (ev instanceof StartReadonlyInputControl) {
                //
                // label, hint, help, value
                //
                // substitute "ref" if present
                StartReadonlyInputControl startReadonlyInputControl =
                    (StartReadonlyInputControl)ev;
                StartElement startElement = startReadonlyInputControl.startElement;
                Object refValue = null;
                if (startReadonlyInputControl.ref != null) {
                    refValue =
                        startReadonlyInputControl.ref.getValue(jxpathContext);
                }
                consumer.startElement(startElement.namespaceURI,
                                      startElement.localName,
                                      startElement.raw,
                                      startElement.attributes);
                if (refValue != null) {
                    String v = String.valueOf(refValue);
                    consumer.characters(v.toCharArray(), 0, v.length());     
                }
            } else if (ev instanceof EndReadonlyInputControl) {
                StartReadonlyInputControl startReadonlyInputControl =
                    ((EndReadonlyInputControl)ev).startReadonlyInputControl;
                StartElement startElement =
                    startReadonlyInputControl.startElement;
                consumer.endElement(startElement.namespaceURI,
                                    startElement.localName,
                                    startElement.raw);
            } else if (ev instanceof StartForm) {
                StartForm startForm = (StartForm)ev;
                StartElement startElement = startForm.startElement;
                String view = startElement.attributes.getValue(VIEW);
                String id = startElement.attributes.getValue(ID);
                Form newForm = Form.lookup(objectModel, id);
                consumer.startElement(startElement.namespaceURI,
                                      startElement.localName,
                                      startElement.raw,
                                      startElement.attributes);
                execute(consumer, newForm, view, contextPath,
                        jxpathContextFactory.newContext(null,
                                                        newForm.getModel()),
                        startForm.next, startForm.endForm);
                consumer.endElement(startElement.namespaceURI,
                                    startElement.localName,
                                    startElement.raw);
                ev = startForm.endForm.next;
                continue;
            } else if (ev instanceof EndForm) {
                StartElement startElement =
                    ((EndForm)ev).startForm.startElement;
                consumer.endElement(startElement.namespaceURI,
                                    startElement.localName,
                                    startElement.raw);
            } else if (ev instanceof StartSubmit) {
                StartElement startElement = ((StartSubmit)ev).startElement;
                Attributes attrs = startElement.attributes;
                if (kont != null) {
                    String id = startElement.attributes.getValue(ID);
                    if (id == null) {
                        id = "";
                    }
                    String cont =
                        startElement.attributes.getValue(CONTINUATION);
                    int level = 0;
                    if (BACK.equals(cont)) {
                        level = 3;
                    }
                    WebContinuation wk = kont;
                    for (int i = 0; i < level; i++) {
                        wk = wk.getParentContinuation();
                        if (wk == null) {
                            throw new SAXParseException("No such continuation",
                                                        ev.location,
                                                        null);
                        }
                    }
                    String kontId = wk.getId();
                    AttributesImpl newAttrs =
                        new AttributesImpl(startElement.attributes);
                    int i = newAttrs.getIndex(ID);
                    String phase = attrs.getValue(PHASE);
                    if (phase == null) {
                        phase = currentView;
                    }
                    if (i >= 0) {
                        newAttrs.setValue(i, kontId + ":" + phase + ":" +id);
                    } else {
                        newAttrs.addAttribute("", ID, ID, "CDATA",
                                              kontId + ":" + phase + ":" + id);
                    }
                    attrs = newAttrs;
                }
                consumer.startElement(startElement.namespaceURI,
                                      startElement.localName,
                                      startElement.raw,
                                      attrs);
            } else if (ev instanceof EndSubmit) {
                StartElement startElement =
                    ((EndSubmit)ev).startSubmit.startElement;
                consumer.endElement(startElement.namespaceURI,
                                    startElement.localName,
                                    startElement.raw);
            } else if (ev instanceof StartItem) {
                StartElement startElement = ((StartItem)ev).startElement;
                consumer.startElement(startElement.namespaceURI,
                                      startElement.localName,
                                      startElement.raw,
                                      startElement.attributes);
            } else if (ev instanceof EndItem) {
                StartElement startElement =
                    ((EndItem)ev).startItem.startElement;
                consumer.endElement(startElement.namespaceURI,
                                    startElement.localName,
                                    startElement.raw);
            } else if (ev instanceof StartChoices) {
                StartElement startElement = ((StartChoices)ev).startElement;
                consumer.startElement(startElement.namespaceURI,
                                      startElement.localName,
                                      startElement.raw,
                                      startElement.attributes);
            } else if (ev instanceof EndChoices) {
                StartElement startElement =
                    ((EndChoices)ev).startChoices.startElement;
                consumer.endElement(startElement.namespaceURI,
                                    startElement.localName,
                                    startElement.raw);
            } else if (ev instanceof StartValue) {
                StartElement startElement = ((StartValue)ev).startElement;
                consumer.startElement(startElement.namespaceURI,
                                      startElement.localName,
                                      startElement.raw,
                                      startElement.attributes);
            } else if (ev instanceof EndValue) {
                StartElement startElement =
                    ((EndValue)ev).startValue.startElement;
                consumer.endElement(startElement.namespaceURI,
                                    startElement.localName,
                                    startElement.raw);
            } else if (ev instanceof StartHidden) {
                StartElement startElement = ((StartHidden)ev).startElement;
                consumer.startElement(startElement.namespaceURI,
                                      startElement.localName,
                                      startElement.raw,
                                      startElement.attributes);
            } else if (ev instanceof EndHidden) {
                StartElement startElement =
                    ((EndHidden)ev).startHidden.startElement;
                consumer.endElement(startElement.namespaceURI,
                                    startElement.localName,
                                    startElement.raw);
            } else if (ev instanceof StartOutput) {
                StartOutput startOutput = (StartOutput)ev;
                StartElement startElement = startOutput.startElement;
                JXPathContext ctx = jxpathContext;
                String formId = startElement.attributes.getValue(FORM);
                if (formId != null) {
                    Form theForm = Form.lookup(objectModel, formId);
                    if (theForm == null) {
                        throw new SAXParseException("form not found: " + formId,
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    /**
     * Tests if the used JXPathContext is correctly initialized.
     */
    public void testCreateContext()
    {
        JXPathContext ctx = engine.createContext(ROOT, TEST_KEY);
        assertNotNull("Context is null", ctx);
        assertTrue("Lenient mode is not set", ctx.isLenient());
        assertSame("Incorrect context bean set", ROOT, ctx.getContextBean());

        NodePointerFactory[] factories = JXPathContextReferenceImpl
                .getNodePointerFactories();
        boolean found = false;
        for (int i = 0; i < factories.length; i++)
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            result.add(root);
            return result;
        }
        else
        {
            JXPathContext context = createContext(root, key);
            List result = context.selectNodes(key);
            return (result != null) ? result : Collections.EMPTY_LIST;
        }
    }
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     * @param key the key to be queried
     * @return the new context
     */
    protected JXPathContext createContext(ConfigurationNode root, String key)
    {
        JXPathContext context = JXPathContext.newContext(root);
        context.setLenient(true);
        return context;
    }
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