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

Introduction

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

Prototype

public abstract Object getValue(String xpath);

Source Link

Document

Evaluates the xpath and returns the resulting object.

Usage

From source file:org.apache.cocoon.woody.binding.ValueJXPathBinding.java

/**
 * Actively performs the binding from the Woody-form to the ObjectModel
 * wrapped in a jxpath context//  w w w .  j a  v  a  2 s .  c o m
 */
public void doSave(Widget frmModel, JXPathContext jxpc) throws BindingException {
    Widget widget = frmModel.getWidget(this.fieldId);
    Object value = widget.getValue();
    if (value != null && convertor != null) {
        value = convertor.convertToString(value, convertorLocale, null);
    }

    Object oldValue = jxpc.getValue(this.xpath);
    if (getLogger().isDebugEnabled()) {
        getLogger().debug("value= " + value + "-- oldvalue=" + oldValue);
    }

    boolean update = false;

    if ((value == null && oldValue != null) || value != null && !value.equals(oldValue)) {
        // first update the value itself
        jxpc.createPathAndSetValue(this.xpath, value);

        // now perform any other bindings that need to be performed when the value is updated
        JXPathContext subContext = null;
        try {
            subContext = jxpc.getRelativeContext(jxpc.getPointer(this.xpath));
        } catch (JXPathException e) {
            // if the value has been set to null and the underlying model is a bean, then
            // JXPath will not be able to create a relative context
            if (getLogger().isDebugEnabled()) {
                getLogger().debug("(Ignorable) problem binding field " + widget.getFullyQualifiedId(), e);
            }
        }
        if (subContext != null) {
            this.updateBinding.saveFormToModel(frmModel, subContext);
        }

        update = true;
    }

    if (getLogger().isDebugEnabled()) {
        getLogger().debug("done saving " + toString() + " -- value= " + value + " -- on-update == " + update);
    }
}

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From source file:org.apache.cocoon.woody.datatype.FlowJXPathSelectionList.java

public void generateSaxFragment(ContentHandler contentHandler, Locale locale) throws SAXException {
    JXPathContext ctx = null;/*from w  w w.j ava 2 s  .  com*/
    Iterator iter = null;
    if (model == null) {
        Object flowData = FlowHelper.getContextObject(ContextHelper.getObjectModel(this.context));
        if (flowData == null) {
            throw new SAXException("No flow data to produce selection list");
        }

        // Move to the list location
        ctx = JXPathContext.newContext(flowData);

        // Iterate on all elements of the list
        iter = ctx.iteratePointers(this.listPath);
    } else {
        // Move to the list location
        ctx = JXPathContext.newContext(model);

        // Iterate on all elements of the list
        iter = ctx.iteratePointers(".");
    }

    // Start the selection-list
    contentHandler.startElement(Constants.WI_NS, SELECTION_LIST_EL,
            Constants.WI_PREFIX_COLON + SELECTION_LIST_EL, Constants.EMPTY_ATTRS);

    while (iter.hasNext()) {
        String stringValue = "";
        Object label = null;

        // Get a context on the current item
        Pointer ptr = (Pointer) iter.next();
        if (ptr.getValue() != null) {
            JXPathContext itemCtx = ctx.getRelativeContext(ptr);

            // Get the value as a string
            Object value = itemCtx.getValue(this.valuePath);

            // List may contain null value, and (per contract with convertors),
            // convertors are not invoked on nulls.
            if (value != null) {
                stringValue = this.datatype.convertToString(value, locale);
            }

            // Get the label (can be ommitted)
            itemCtx.setLenient(true);
            label = itemCtx.getValue(this.labelPath);
            if (label == null) {
                label = stringValue;
            }
        }

        // Output this item
        AttributesImpl itemAttrs = new AttributesImpl();
        itemAttrs.addCDATAAttribute("value", stringValue);
        contentHandler.startElement(Constants.WI_NS, ITEM_EL, Constants.WI_PREFIX_COLON + ITEM_EL, itemAttrs);
        if (label != null) {
            contentHandler.startElement(Constants.WI_NS, LABEL_EL, Constants.WI_PREFIX_COLON + LABEL_EL,
                    Constants.EMPTY_ATTRS);
            if (label instanceof XMLizable) {
                ((XMLizable) label).toSAX(contentHandler);
            } else {
                String stringLabel = label.toString();
                contentHandler.characters(stringLabel.toCharArray(), 0, stringLabel.length());
            }
            contentHandler.endElement(Constants.WI_NS, LABEL_EL, Constants.WI_PREFIX_COLON + LABEL_EL);
        }
        contentHandler.endElement(Constants.WI_NS, ITEM_EL, Constants.WI_PREFIX_COLON + ITEM_EL);
    }

    // End the selection-list
    contentHandler.endElement(Constants.WI_NS, SELECTION_LIST_EL,
            Constants.WI_PREFIX_COLON + SELECTION_LIST_EL);
}

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From source file:org.chiba.test.conformance.chapter3.Chapter3Test.java

/**
 * __UNDOCUMENTED__/*  ww w. j a  v a 2s  . c  om*/
 *
 * @throws Exception __UNDOCUMENTED__
 */
public void test010c() throws Exception {
    URI uri = new URI(getClass().getResource("c3-010c.xml").toString());
    File file = new File(uri);
    String baseUri = file.getParentFile().toURI().toString();

    processor.setBaseURI(baseUri);
    processor.setXMLContainer(file.getAbsolutePath());
    processor.init();

    //        DOMUtil.prettyPrintDOM(processor.getXMLContainer());
    JXPathContext context = processor.getContainer().getRootContext();
    assertTrue(context.getValue("//chiba:data[1]").equals("external"));
}

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From source file:org.chiba.test.conformance.chapter3.Chapter3Test.java

/**
 * test usage of default namespace./*from  w ww  .j a va  2s  . c  om*/
 * test, if control contains the value that is referenced via bind.
 *
 * @throws java.lang.Exception
 */
public void testNamespace1() throws Exception {
    System.out.println("Chapter 3: Testing use of Namespaces including Default Namespace");
    processor.setXMLContainer(getClass().getResourceAsStream("c3-001.xml"));
    processor.init();

    //       Document doc = processor.getContainer().getDOM();
    //        DOMUtil.prettyPrintDOM(processor.getXMLContainer());
    JXPathContext context = processor.getContainer().getRootContext();

    //check the controls value
    String result = (String) context.getValue("//xf:input/chiba:data/text()");
    assertNotNull(result);
    assertTrue(result.equals("42"));
}

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From source file:org.chiba.xml.xforms.action.AbstractBoundAction.java

protected boolean evalIfCondition(Element action, String ifCondition) {
    //get the global XPath context
    JXPathContext context = this.model.getDefaultInstance().getInstanceContext();
    String currentPath = getLocationPath();

    //make the ifCondition a Predicate of the currentPath
    String expr = XPathUtil.joinStep(new String[] { currentPath, ifCondition });
    Boolean b = (Boolean) context.getValue("boolean(" + expr + ")");

    return b.booleanValue();
}

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From source file:org.chiba.xml.xforms.action.SetValueAction.java

/**
 * Performs the <code>setvalue</code> action.
 *
 * @return <code>true</code> if setvalue executed successfully, otherwise
 * <code>false</code>./*  www. ja  v  a 2 s  .c  o  m*/
 * @throws XFormsException if an error occurred during <code>setvalue</code>
 * processing.
 */
public boolean perform() throws XFormsException {
    // get location path and instance id
    String locationPath = getLocationPath();
    String instanceId = getInstanceId(locationPath);

    // get instance
    Instance instance = getModel().getInstance(instanceId);

    if (instance.existsNode(locationPath)) {
        if (this.valueAttribute != null) {
            // evaluate value expression
            JXPathContext context = instance.getInstanceContext();
            Pointer instancePointer = context.getPointer(locationPath);
            JXPathContext valueContext = context.getRelativeContext(instancePointer);
            valueContext.setFunctions(context.getFunctions());
            Object value = valueContext.getValue(this.valueAttribute);
            String newValue = value != null ? value.toString() : "null";

            if (getLogger().isDebugEnabled()) {
                getLogger().debug(this + " perform: setting evaluated value '" + newValue + "'");
            }

            // set node value
            instance.setNodeValue(locationPath, newValue);
        } else {
            if (getLogger().isDebugEnabled()) {
                getLogger().debug(this + " perform: setting literal value '" + this.nodeValue + "'");
            }

            // set node value
            instance.setNodeValue(locationPath, this.nodeValue);
        }

        // update behaviour
        setDeferredRecalculate(this.model.getId(), true);
        setDeferredRevalidate(this.model.getId(), true);
        setDeferredRefresh(this.model.getId(), true);

        // indicate success
        return true;
    }
    // todo: error handling ?
    getLogger().warn(this + " perform: nodeset " + getLocationPath() + " does not exist");

    // indicate failure
    return false;
}

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From source file:org.chiba.xml.xforms.BindingTest.java

public void testNestedContext() throws Exception {
    JXPathContext context = this.chibaBean.getContainer().getRootContext();
    assertEquals("1", context.getValue("//*[@id='repeat-1']/xf:group[1]//xf:output/chiba:data/text()"));
    assertEquals("2", context.getValue("//*[@id='repeat-1']/xf:group[2]//xf:output/chiba:data/text()"));
    assertEquals("3", context.getValue("//*[@id='repeat-1']/xf:group[3]//xf:output/chiba:data/text()"));
    assertEquals("1", context.getValue("//*[@id='repeat-2']/xf:group[1]//xf:output/chiba:data/text()"));
    assertEquals("2", context.getValue("//*[@id='repeat-2']/xf:group[2]//xf:output/chiba:data/text()"));
    assertEquals("3", context.getValue("//*[@id='repeat-2']/xf:group[3]//xf:output/chiba:data/text()"));
}

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From source file:org.chiba.xml.xforms.BindingTest.java

private void assertValues(String input, String label, int number) throws XFormsException {
    JXPathContext context = this.chibaBean.getContainer().getRootContext();
    assertEquals(input, context.getValue("//*[@id='input-" + number + "']/chiba:data/text()"));
    assertEquals(label, context.getValue("//*[@id='input-" + number + "']/xf:label/text()"));
}

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From source file:org.chiba.xml.xforms.ChibaBeanTest.java

/**
 * tests the dispatching of an event to an element.
 *
 * @throws Exception __UNDOCUMENTED__// w w w .ja  va 2s.co m
 */
public void testDispatchEvent() throws Exception {
    processor.setXMLContainer(getClass().getResourceAsStream("actions.xhtml"));
    processor.init();
    assertTrue(!processor.dispatch("setvalue-trigger", DOMEventNames.ACTIVATE));

    //test the side effect of dispatching the DOMActivate to a setvalue trigger -> the instance has a new value
    Document instance = processor.getContainer().getDefaultModel().getDefaultInstance().getInstanceDocument();
    JXPathContext context = JXPathContext.newContext(instance);
    assertTrue(context.getValue("//helloworld").equals("Hello World"));
}

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From source file:org.chiba.xml.xforms.ChibaBeanTest.java

/**
 * test, if updateControlValue correctly changes the value and a value-changed event occurs on the relevant
 * control.//w  w  w  .  jav a2 s . com
 *
 * @throws Exception
 */
public void testUpdateControlValue1() throws Exception {
    processor.setXMLContainer(getClass().getResourceAsStream("actions.xhtml"));
    processor.init();

    TestEventListener listener = new TestEventListener();
    JXPathContext context = JXPathContext.newContext(this.processor.getXMLContainer());
    Node node = (Node) context.getPointer("//*[@id='hello-input']").getNode();
    EventTarget eventTarget = (EventTarget) node;
    eventTarget.addEventListener(XFormsEventNames.VALUE_CHANGED, listener, false);

    processor.updateControlValue("hello-input", "Hello new World");
    assertTrue(listener.getType().equals(XFormsEventNames.VALUE_CHANGED));
    assertTrue(listener.getId().equals("hello-input"));

    //test the side effect of dispatching the DOMActivate to a setvalue trigger -> the instance has a new value
    Document instance = processor.getContainer().getDefaultModel().getDefaultInstance().getInstanceDocument();
    JXPathContext context1 = JXPathContext.newContext(instance);
    assertTrue(context1.getValue("//helloworld").equals("Hello new World"));
}

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