Examples of net.sf.saxon.expr.PathExpression

net.sf.saxon.expr.PathExpression
An expression that establishes a set of nodes by following relationships between nodes in the document. Specifically, it consists of a start expression which defines a set of nodes, and a step which defines a relationship to be followed from those nodes to create a new set of nodes.

This class inherits from SlashExpression; it is used in the common case where the SlashExpression is known to return nodes rather than atomic values.

This class is not responsible for sorting the results into document order or removing duplicates. That is done by a DocumentSorter expression which is wrapped around the path expression. However, this class does contain the logic for deciding statically whether the DocumentSorter is needed or not.

        if (!(subExpr instanceof PathExpression)) {
            return;
        }


        Document document = DOMUtils.toDOMDocument(contextNode);
        PathExpression pathExpr = (PathExpression) subExpr;
        Expression step = pathExpr.getFirstStep();


        while (step != null) {
            if (step instanceof AxisExpression) {
                AxisExpression axisExpr = (AxisExpression) step;


                NodeTest nodeTest = axisExpr.getNodeTest();


                if (!(nodeTest instanceof NameTest)) {
                    break;
                }


                NameTest nameTest = (NameTest) nodeTest;


                QName childName = getQualifiedName(nameTest.getFingerprint(),
                        namePool, contextUris);


                if (Axis.CHILD == axisExpr.getAxis()) {
                    if (NodeKindTest.ELEMENT.getNodeKindMask() != nameTest.getNodeKindMask()) {
                        break;
                    }


                    NodeList children = ((Element) contextNode).getElementsByTagNameNS(childName.getNamespaceURI(),
                            childName.getLocalPart());
                    if ((children == null) || (children.getLength() == 0)) {
                        Node child = document.createElementNS(childName.getNamespaceURI(),
                                DOMUtils.getQualifiedName(childName));
                        contextNode.appendChild(child);
                        contextNode = child;
                    } else if (children.getLength() == 1) {
                        contextNode = children.item(0);
                    } else {
                        break;
                    }
                } else if (Axis.ATTRIBUTE == axisExpr.getAxis()) {
                    if (NodeKindTest.ATTRIBUTE.getNodeKindMask() != nameTest.getNodeKindMask()) {
                        break;
                    }


                    Attr attribute = ((Element) contextNode).getAttributeNodeNS(childName.getNamespaceURI(), childName.getLocalPart());
                    if (attribute == null) {
                        attribute = document.createAttributeNS(childName.getNamespaceURI(), childName.getLocalPart());
                        ((Element) contextNode).setAttributeNode(attribute);
                        contextNode = attribute;
                    } else {
                        break;
                    }


                } else {
                    break;
                }




            } else if (step instanceof ItemChecker) {
                ItemChecker itemChecker = (ItemChecker) step;
                Expression baseExpr = itemChecker.getBaseExpression();


                if (!(baseExpr instanceof VariableReference)) {
                    break;
                }
            } else {
                break;
            }


            if (pathExpr != null) {
                Expression remainingSteps = pathExpr.getRemainingSteps();


                if (remainingSteps instanceof PathExpression) {
                    pathExpr = (PathExpression) remainingSteps;
                    step = pathExpr.getFirstStep();
                } else if (remainingSteps instanceof AxisExpression) {
                    pathExpr = null;
                    step = (AxisExpression) remainingSteps;
                }
            } else {

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        if (!(subExpr instanceof PathExpression)) {
            return;
        }


        Document document = DOMUtils.toDOMDocument(contextNode);
        PathExpression pathExpr = (PathExpression) subExpr;
        Expression step = pathExpr.getFirstStep();


        while (step != null) {
            if (step instanceof AxisExpression) {
                AxisExpression axisExpr = (AxisExpression) step;


                NodeTest nodeTest = axisExpr.getNodeTest();


                if (!(nodeTest instanceof NameTest)) {
                    break;
                }


                NameTest nameTest = (NameTest) nodeTest;


                QName childName = getQualifiedName(nameTest.getFingerprint(),
                        namePool, contextUris);
                
                if (Axis.CHILD == axisExpr.getAxis()) {
                    if (NodeKindTest.ELEMENT.getNodeKindMask() != nameTest.getNodeKindMask()) {
                        break;
                    }
                  
                    NodeList children = ((Element) contextNode).getElementsByTagNameNS(childName.getNamespaceURI(),
                            childName.getLocalPart());
                    if ((children == null) || (children.getLength() == 0)) {
                        Node child = document.createElementNS(childName.getNamespaceURI(),
                                DOMUtils.getQualifiedName(childName));
                        contextNode.appendChild(child);
                        contextNode = child;
                    } else if (children.getLength() == 1) {
                        contextNode = children.item(0);
                    } else {
                        break;
                    }
                } else if (Axis.ATTRIBUTE == axisExpr.getAxis()) {
                    if (NodeKindTest.ATTRIBUTE.getNodeKindMask() != nameTest.getNodeKindMask()) {
                        break;
                    }
                    
                    Attr attribute = ((Element) contextNode).getAttributeNodeNS(childName.getNamespaceURI(), childName.getLocalPart());
                    if (attribute == null) {
                      attribute = document.createAttributeNS(childName.getNamespaceURI(), childName.getLocalPart());
                      ((Element) contextNode).setAttributeNode(attribute);
                      contextNode = attribute;
                    } else {
                      break;
                    }
                  
                } else {
                  break;
                }




            } else if (step instanceof ItemChecker) {
                ItemChecker itemChecker = (ItemChecker) step;
                Expression baseExpr = itemChecker.getBaseExpression();


                if (!(baseExpr instanceof VariableReference)) {
                    break;
                }
            } else {
                break;
            }


            if (pathExpr != null) {
                Expression remainingSteps = pathExpr.getRemainingSteps();


                if (remainingSteps instanceof PathExpression) {
                    pathExpr = (PathExpression) remainingSteps;
                    step = pathExpr.getFirstStep();
                } else if (remainingSteps instanceof AxisExpression) {
                    pathExpr = null;
                    step = (AxisExpression) remainingSteps;
                }
            } else {

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        if (!(subExpr instanceof PathExpression)) {
            return;
        }


        Document document = contextNode.getOwnerDocument();
        PathExpression pathExpr = (PathExpression) subExpr;
        Expression step = pathExpr.getFirstStep();


        while (step != null) {
            if (step instanceof AxisExpression) {
                AxisExpression axisExpr = (AxisExpression) step;


                NodeTest nodeTest = axisExpr.getNodeTest();


                if (!(nodeTest instanceof NameTest)) {
                    break;
                }


                NameTest nameTest = (NameTest) nodeTest;


                QName childName = getQualifiedName(nameTest.getFingerprint(),
                        namePool, contextUris);


                if (Axis.CHILD == axisExpr.getAxis()) {
                    if (NodeKindTest.ELEMENT.getNodeKindMask() != nameTest.getNodeKindMask()) {
                        break;
                    }


                    NodeList children = ((Element) contextNode).getElementsByTagNameNS(childName.getNamespaceURI(),
                            childName.getLocalPart());
                    if ((children == null) || (children.getLength() == 0)) {
                        Node child = document.createElementNS(childName.getNamespaceURI(),
                                DOMUtils.getQualifiedName(childName));
                        contextNode.appendChild(child);
                        contextNode = child;
                    } else if (children.getLength() == 1) {
                        contextNode = children.item(0);
                    } else {
                        break;
                    }
                } else if (Axis.ATTRIBUTE == axisExpr.getAxis()) {
                    if (NodeKindTest.ATTRIBUTE.getNodeKindMask() != nameTest.getNodeKindMask()) {
                        break;
                    }


                    Attr attribute = ((Element) contextNode).getAttributeNodeNS(childName.getNamespaceURI(), childName.getLocalPart());
                    if (attribute == null) {
                        attribute = document.createAttributeNS(childName.getNamespaceURI(), childName.getLocalPart());
                        ((Element) contextNode).setAttributeNode(attribute);
                        contextNode = attribute;
                    } else {
                        break;
                    }


                } else {
                    break;
                }




            } else if (step instanceof ItemChecker) {
                ItemChecker itemChecker = (ItemChecker) step;
                Expression baseExpr = itemChecker.getBaseExpression();


                if (!(baseExpr instanceof VariableReference)) {
                    break;
                }
            } else {
                break;
            }


            if (pathExpr != null) {
                Expression remainingSteps = pathExpr.getRemainingSteps();


                if (remainingSteps instanceof PathExpression) {
                    pathExpr = (PathExpression) remainingSteps;
                    step = pathExpr.getFirstStep();
                } else if (remainingSteps instanceof AxisExpression) {
                    pathExpr = null;
                    step = (AxisExpression) remainingSteps;
                } else {
                    throw new RuntimeException("Not supported step " + remainingSteps + " in expression " + expression);

View Full Code Here

        if (!(subExpr instanceof PathExpression)) {
            return;
        }


        Document document = DOMUtils.toDOMDocument(contextNode);
        PathExpression pathExpr = (PathExpression) subExpr;
        Expression step = pathExpr.getFirstStep();


        while (step != null) {
            if (step instanceof AxisExpression) {
                AxisExpression axisExpr = (AxisExpression) step;


                NodeTest nodeTest = axisExpr.getNodeTest();


                if (!(nodeTest instanceof NameTest)) {
                    break;
                }


                NameTest nameTest = (NameTest) nodeTest;


                QName childName = getQualifiedName(nameTest.getFingerprint(),
                        namePool, contextUris);
                
                if (Axis.CHILD == axisExpr.getAxis()) {
                    if (NodeKindTest.ELEMENT.getNodeKindMask() != nameTest.getNodeKindMask()) {
                        break;
                    }
                  
                    NodeList children = ((Element) contextNode).getElementsByTagNameNS(childName.getNamespaceURI(),
                            childName.getLocalPart());
                    if ((children == null) || (children.getLength() == 0)) {
                        Node child = document.createElementNS(childName.getNamespaceURI(),
                                DOMUtils.getQualifiedName(childName));
                        contextNode.appendChild(child);
                        contextNode = child;
                    } else if (children.getLength() == 1) {
                        contextNode = children.item(0);
                    } else {
                        break;
                    }
                } else if (Axis.ATTRIBUTE == axisExpr.getAxis()) {
                    if (NodeKindTest.ATTRIBUTE.getNodeKindMask() != nameTest.getNodeKindMask()) {
                        break;
                    }
                    
                    Attr attribute = ((Element) contextNode).getAttributeNodeNS(childName.getNamespaceURI(), childName.getLocalPart());
                    if (attribute == null) {
                      attribute = document.createAttributeNS(childName.getNamespaceURI(), childName.getLocalPart());
                      ((Element) contextNode).setAttributeNode(attribute);
                      contextNode = attribute;
                    } else {
                      break;
                    }
                  
                } else {
                  break;
                }




            } else if (step instanceof ItemChecker) {
                ItemChecker itemChecker = (ItemChecker) step;
                Expression baseExpr = itemChecker.getBaseExpression();


                if (!(baseExpr instanceof VariableReference)) {
                    break;
                }
            } else {
                break;
            }


            if (pathExpr != null) {
                Expression remainingSteps = pathExpr.getRemainingSteps();


                if (remainingSteps instanceof PathExpression) {
                    pathExpr = (PathExpression) remainingSteps;
                    step = pathExpr.getFirstStep();
                } else if (remainingSteps instanceof AxisExpression) {
                    pathExpr = null;
                    step = (AxisExpression) remainingSteps;
                } else {
                    throw new RuntimeException("Not supported step " + remainingSteps + " in expression " + expression);

View Full Code Here

        if (!(subExpr instanceof PathExpression)) {
            return;
        }


        Document document = DOMUtils.toDOMDocument(contextNode);
        PathExpression pathExpr = (PathExpression) subExpr;
        Expression step = pathExpr.getFirstStep();


        while (step != null) {
            if (step instanceof AxisExpression) {
                AxisExpression axisExpr = (AxisExpression) step;


                NodeTest nodeTest = axisExpr.getNodeTest();


                if (!(nodeTest instanceof NameTest)) {
                    break;
                }


                NameTest nameTest = (NameTest) nodeTest;


                QName childName = getQualifiedName(nameTest.getFingerprint(),
                        namePool, contextUris);
                
                if (Axis.CHILD == axisExpr.getAxis()) {
                    if (NodeKindTest.ELEMENT.getNodeKindMask() != nameTest.getNodeKindMask()) {
                        break;
                    }
                  
                    NodeList children = ((Element) contextNode).getElementsByTagNameNS(childName.getNamespaceURI(),
                            childName.getLocalPart());
                    if ((children == null) || (children.getLength() == 0)) {
                        Node child = document.createElementNS(childName.getNamespaceURI(),
                                DOMUtils.getQualifiedName(childName));
                        contextNode.appendChild(child);
                        contextNode = child;
                    } else if (children.getLength() == 1) {
                        contextNode = children.item(0);
                    } else {
                        break;
                    }
                } else if (Axis.ATTRIBUTE == axisExpr.getAxis()) {
                    if (NodeKindTest.ATTRIBUTE.getNodeKindMask() != nameTest.getNodeKindMask()) {
                        break;
                    }
                    
                    Attr attribute = ((Element) contextNode).getAttributeNodeNS(childName.getNamespaceURI(), childName.getLocalPart());
                    if (attribute == null) {
                      attribute = document.createAttributeNS(childName.getNamespaceURI(), childName.getLocalPart());
                      ((Element) contextNode).setAttributeNode(attribute);
                      contextNode = attribute;
                    } else {
                      break;
                    }
                  
                } else {
                  break;
                }




            } else if (step instanceof ItemChecker) {
                ItemChecker itemChecker = (ItemChecker) step;
                Expression baseExpr = itemChecker.getBaseExpression();


                if (!(baseExpr instanceof VariableReference)) {
                    break;
                }
            } else {
                break;
            }


            if (pathExpr != null) {
                Expression remainingSteps = pathExpr.getRemainingSteps();


                if (remainingSteps instanceof PathExpression) {
                    pathExpr = (PathExpression) remainingSteps;
                    step = pathExpr.getFirstStep();
                } else if (remainingSteps instanceof AxisExpression) {
                    pathExpr = null;
                    step = (AxisExpression) remainingSteps;
                }
            } else {

View Full Code Here

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Related Classes of net.sf.saxon.expr.PathExpression

net.sf.saxon.om.SequenceIterator

net.sf.saxon.pattern.NodeTest

net.sf.saxon.sort.DocumentSorter

net.sf.saxon.sort.Reverser

net.sf.saxon.type.ItemType

net.sf.saxon.type.TypeHierarchy

org.apache.ode.bpel.elang.xpath20.runtime.XPath20ExpressionModifier

org.apache.ode.bpel.rtrep.v2.xpath20.XPath20ExpressionModifier

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