Examples of com.volantis.mcs.eclipse.common.odom.xpath.ODOMXPath.create()

Package com.volantis.mcs.eclipse.common.odom.xpath

Class com.volantis.mcs.eclipse.common.odom.xpath.ODOMXPath

Examples of com.volantis.mcs.eclipse.common.odom.xpath.ODOMXPath.create()

com.volantis.mcs.eclipse.common.odom.xpath.ODOMXPath.create()
This method is used, iteratively, to cause the creation of a given XPath set of ODOM nodes where nodes in the XPath are missing.
Each step in processing the XPath simply takes the first component of the XPath (i.e. up to a '/' or the end of the string) and creates a sub-XPath from it. This is used to access the required node.

If not found, that sub-node is created. This could be an optionally predicated element, an attribute or an optionally predicated text node. The predicate can simply be removed before processing the remainder of the path (the required number of new instances must be created to ensure that the required predicated instance will exist).

Note: The path is for an attribute if it starts with the '@' character, a text node if it is the value "text()" and otherwise is for a named element.
@param context the ODOMElement that serves as the context ('parent'node). @param factory the ODOMFactory that will be used to create a Text,Attribute or Element node. @return the lowest node created in the path. @throws IllegalArgumentException if context is null or factory is null. @throws IllegalStateException if an attempt was made to create a nodeof an unsupported type. @throws com.volantis.mcs.xml.xpath.XPathException if the XPath cannot be applied usingthe given context (the XPath is absolute and the context element doesn't match the root step in the path) or if the XPath is erroneous (e.g. contains path steps after an attribute or text node step).

            final ODOMXPath createPath =
                        new ODOMXPath(sourceToTargetPath, newAttribute);


            // This just creates an EMPTY attribute.......
            final ODOMAttribute createdAttribute =
                        (ODOMAttribute) createPath.
                        create(sourceElement, odomFactory);


            // ....but in doing so it might have created us a new target:
            // first check whether it was originally null
            if (targetElement == null) {

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     * Test the creation of an ODOMXPath when node exists.
     */
    public void testCreateNodeExists() throws Exception {
        // Check when element exists
        ODOMXPath path = new ODOMXPath("cd[2]");
        ODOMObservable result = path.create((ODOMElement) root, factory);
        assertNull("Result should be null", result);


        // Check when attribute exists
        path = new ODOMXPath("cd[2]/@country");
        result = path.create((ODOMElement) root, factory);

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        ODOMObservable result = path.create((ODOMElement) root, factory);
        assertNull("Result should be null", result);


        // Check when attribute exists
        path = new ODOMXPath("cd[2]/@country");
        result = path.create((ODOMElement) root, factory);
        assertNull("Result should be null", result);


        // Check when text exists
        path = new ODOMXPath("cd[2]/title/text()");
        result = path.create((ODOMElement) root, factory);

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        result = path.create((ODOMElement) root, factory);
        assertNull("Result should be null", result);


        // Check when text exists
        path = new ODOMXPath("cd[2]/title/text()");
        result = path.create((ODOMElement) root, factory);
        assertNull("Result should be null", result);
    }




    /**

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     */
    public void testCreateNodeTooGeneral() throws Exception {
        // Check when element exists
        ODOMXPath path = new ODOMXPath("cd");
        try {
            path.create((ODOMElement) root, factory);
            fail("Expected an IllegalStateException.");
        } catch (IllegalStateException e) {
        }
    }

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    public void testCreateElementMultiStep() throws Exception {
        ODOMElement context = (ODOMElement) factory.element("root");
        ODOMXPath path = new ODOMXPath("a/b");


        // Test creation of whole path from empty context
        ODOMObservable newNode = path.create(context, factory);


        assertTrue("New node not an element (is a " +
                   newNode.getClass().getName() + ")",
                   newNode instanceof Element);

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                     new ODOMXPath(newNode).getExternalForm());


        // Test creation of single additional step
        path = new ODOMXPath(path, "c");


        newNode = path.create(context, factory);


        assertTrue("New node not an element (is a " +
                   newNode.getClass().getName() + ")",
                   newNode instanceof Element);

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    public void testCreateAttributeMultiStep() throws Exception {
        ODOMElement context = (ODOMElement) factory.element("root");
        ODOMXPath path = new ODOMXPath("a/@b");


        // Test creation of whole path from empty context
        ODOMObservable newNode = path.create(context, factory);


        assertTrue("New node not an attribute (is a " +
                   newNode.getClass().getName() + ")",
                   newNode instanceof Attribute);

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                     new ODOMXPath(newNode).getExternalForm());


        // Test creation of single additional step
        path = new ODOMXPath("a/@c");


        newNode = path.create(context, factory);


        assertTrue("New node not an attribute (is a " +
                   newNode.getClass().getName() + ")",
                   newNode instanceof Attribute);

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    public void testCreateTextMultiStep() throws Exception {
        ODOMElement context = (ODOMElement) factory.element("root");
        ODOMXPath path = new ODOMXPath("a/b/text()");


        // Test creation of whole path from empty context
        ODOMObservable newNode = path.create(context, factory);


        assertTrue("New node not text (is a " +
                   newNode.getClass().getName() + ")",
                   newNode instanceof Text);

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