Examples of org.apache.commons.jxpath.ri.model.NodePointer

Package org.apache.commons.jxpath.ri.model

Examples of org.apache.commons.jxpath.ri.model.NodePointer

org.apache.commons.jxpath.ri.model.NodePointer
Common superclass for Pointers of all kinds. A NodePointer maps to a deterministic XPath that represents the location of a node in an object graph. This XPath uses only simple axes: child, namespace and attribute and only simple, context-independent predicates. @author Dmitri Plotnikov @version $Revision: 1.17 $ $Date: 2003/03/11 00:59:23 $

    }


    public void testIDFunction() {
        context.setIdentityManager(new IdentityManager() {
            public Pointer getPointerByID(JXPathContext context, String id) {
                NodePointer ptr = (NodePointer) context.getPointer("/document");
                ptr = ptr.getValuePointer();
                return ptr.getPointerByID(context, id);
            }
        });


        assertXPathValueAndPointer(
            context,

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        if (firstMatch
            && isSimpleExpressionPath()
            && !(context instanceof UnionContext)) {
            EvalContext ctx = context;
            NodePointer ptr = (NodePointer) ctx.getSingleNodePointer();
            if (ptr != null
                && (ptr.getIndex() == NodePointer.WHOLE_COLLECTION
                    || predicates == null
                    || predicates.length == 0)) {
                return SimplePathInterpreter.interpretSimpleExpressionPath(
                    evalContext,
                    ptr,

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                // a non-existing property and ones representing a property
                // whose value is null.  In the latter case, the pointer
                // is going to have isActual == false, but its parent,
                // which is a non-node pointer identifying the bean property,
                // will return isActual() == true.
                NodePointer parent = ((NodePointer) result).getParent();
                if (parent == null
                    || !parent.isContainer()
                    || !parent.isActual()) {
                    throw new JXPathException("No value for xpath: " + xpath);
                }
            }
            result = ((NodePointer) result).getValue();
        }

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        removePath(xpath, compileExpression(xpath));
    }


    public void removePath(String xpath, Expression expr) {
        try {
            NodePointer pointer = (NodePointer) getPointer(xpath, expr);
            if (pointer != null) {
                ((NodePointer) pointer).remove();
            }
        }
        catch (Throwable ex) {

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            while (it.hasNext()) {
                list.add(it.next());
            }
            Collections.sort(list);
            for (int i = list.size() - 1; i >= 0; i--) {
                NodePointer pointer = (NodePointer) list.get(i);
                pointer.remove();
            }
        }
        catch (Throwable ex) {
            throw new JXPathException(
                "Exception trying to remove all for xpath " + xpath,

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            //    or it may return anything else, like a DOMNodePointer.
            //    In the former case we need to exactly what we did in use 
            //    case 1.  In the latter case, we simply request that the 
            //    non-property pointer expand the collection by itself.


            NodePointer newParent = parent.createPath(context);
            if (newParent instanceof PropertyOwnerPointer) {
                PropertyOwnerPointer pop = (PropertyOwnerPointer) newParent;
                newParent = pop.getPropertyPointer();
            }
            return newParent.createChild(context, getName(), getIndex());
        }
    }

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        }
    }


    public NodePointer createPath(JXPathContext context, Object value) {
        if (isAttribute()) {
            NodePointer pointer = parent.createAttribute(context, getName());
            pointer.setValue(value);
            return pointer;
        }
        else {
            NodePointer newParent = parent.createPath(context);
            if (newParent instanceof PropertyOwnerPointer) {
                PropertyOwnerPointer pop = (PropertyOwnerPointer) newParent;
                newParent = pop.getPropertyPointer();
            }
            return newParent.createChild(context, getName(), index, value);
        }
    }

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        }
        return this;
    }


    public NodePointer createPath(JXPathContext context, Object value) {
        NodePointer ptr = createPath(context);
        ptr.setValue(value);
        return ptr;
    }

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        JXPathContext context,
        QName name,
        int index,
        Object value) 
    {
        NodePointer ptr = (NodePointer) clone();
        ptr.setIndex(index);
        return ptr.createPath(context, value);
    }

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    public NodePointer createChild(
        JXPathContext context,
        QName name,
        int index) 
    {
        NodePointer ptr = (NodePointer) clone();
        ptr.setIndex(index);
        return ptr.createPath(context);
    }

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org.apache.cocoon.components.jxdom.DocumentAdapter$ElementAdapter

org.apache.commons.configuration.tree.xpath.TestConfigurationNodeIteratorChildren

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org.apache.commons.jxpath.AbstractFactory

org.apache.commons.jxpath.JXPathTestCase

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org.apache.commons.jxpath.ri.axes.AncestorContext

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org.apache.commons.jxpath.ri.axes.InitialContext

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