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Provides a basic XSLT 2.0 and XQuery 1.0 processor (W3C Recommendations,
January 2007). Command line interfaces and implementations of several
Java APIs (DOM, XPath, s9api) are also included.
The newest version!
package net.sf.saxon.om;
import net.sf.saxon.Configuration;
import net.sf.saxon.event.Receiver;
import net.sf.saxon.event.ReceiverOptions;
import net.sf.saxon.pattern.AnyNodeTest;
import net.sf.saxon.pattern.NodeTest;
import net.sf.saxon.pattern.NodeKindTest;
import net.sf.saxon.sort.IntIterator;
import net.sf.saxon.sort.IntHashSet;
import net.sf.saxon.trans.XPathException;
import net.sf.saxon.type.Type;
import net.sf.saxon.value.StringValue;
import net.sf.saxon.value.Value;
/**
* This class provides an implementation of the namespace axis over any implementation
* of the data model. It relies on element nodes to implement the method
* {@link NodeInfo#getDeclaredNamespaces(int[])}
*/
public class NamespaceIterator implements AxisIterator {
private NodeInfo element;
private NodeTest test;
private int index;
private int position;
private NamespaceNodeImpl next;
private NamespaceNodeImpl current;
private IntIterator nsIterator;
/**
* Factory method to create an iterator over the in-scope namespace nodes
* @param element the node whose namespaces are required
* @param test used to filter the returned nodes
* @return an iterator over the namespace nodes that satisfy the test
*/
public static AxisIterator makeIterator(NodeInfo element, NodeTest test) {
boolean first = true;
if (test instanceof AnyNodeTest || test == NodeKindTest.NAMESPACE) {
test = null;
}
AxisIterator result = null;
IntHashSet declared = null;
IntHashSet undeclared = null;
int[] buffer = new int[8];
NodeInfo node = element;
while (node != null && node.getNodeKind() == Type.ELEMENT) {
int[] nslist = node.getDeclaredNamespaces(buffer);
if (nslist != null) {
for (int i=0; i> 16);
if (uriCode == 0) {
// this is an undeclaration
undeclared.add(prefixCode);
} else {
if (!undeclared.contains(prefixCode)) {
declared.add(nslist[i]);
undeclared.add(prefixCode);
}
}
}
}
node = node.getParent();
}
if (result == null) {
NodeInfo ns = new NamespaceNodeImpl(element, NamespaceConstant.XML_NAMESPACE_CODE, 0);
if (test == null) {
return SingleNodeIterator.makeIterator(ns);
} else {
return Navigator.filteredSingleton(ns, test);
}
} else {
((NamespaceIterator)result).nsIterator = declared.iterator();
return result;
}
}
private NamespaceIterator() {
}
/**
* Get the next item in the sequence.
*/
public void advance() {
while (nsIterator.hasNext()) {
int nscode = nsIterator.next();
next = new NamespaceNodeImpl(element, nscode, ++index);
if (test == null || test.matches(next)) {
return;
}
}
next = null;
}
/**
* Move to the next node, without returning it. Returns true if there is
* a next node, false if the end of the sequence has been reached. After
* calling this method, the current node may be retrieved using the
* current() function.
*/
public boolean moveNext() {
return (next() != null);
}
/**
* Get the next item in the sequence.
*
* @return the next Item. If there are no more nodes, return null.
*/
public Item next() {
if (index == -1) {
advance();
index = 0;
}
current = next;
if (current == null) {
position = -1;
return null;
}
advance();
position++;
return current;
}
/**
* Get the current item in the sequence.
*
* @return the current item, that is, the item most recently returned by
* next()
*/
public Item current() {
return current;
}
/**
* Get the current position
*
* @return the position of the current item (the item most recently
* returned by next()), starting at 1 for the first node
*/
public int position() {
return position;
}
/**
* Return an iterator over an axis, starting at the current node.
*
* @param axis the axis to iterate over, using a constant such as
* {@link Axis#CHILD}
* @param test a predicate to apply to the nodes before returning them.
* @throws NullPointerException if there is no current node
*/
public AxisIterator iterateAxis(byte axis, NodeTest test) {
return current.iterateAxis(axis, test);
}
/**
* Return the atomized value of the current node.
*
* @return the atomized value.
* @throws NullPointerException if there is no current node
*/
public Value atomize() throws XPathException {
return current.atomize();
}
/**
* Return the string value of the current node.
*
* @return the string value, as an instance of CharSequence.
* @throws NullPointerException if there is no current node
*/
public CharSequence getStringValue() {
return current.getStringValueCS();
}
/**
* Get another iterator over the same sequence of items, positioned at the
* start of the sequence
*
* @return a new iterator over the same sequence
*/
public SequenceIterator getAnother() {
return makeIterator(element, test);
}
/**
* Get properties of this iterator, as a bit-significant integer.
*
* @return the properties of this iterator. This will be some combination of
* properties such as {@link #GROUNDED}, {@link #LAST_POSITION_FINDER},
* and {@link #LOOKAHEAD}. It is always
* acceptable to return the value zero, indicating that there are no known special properties.
* It is acceptable for the properties of the iterator to change depending on its state.
*/
public int getProperties() {
return 0;
}
/**
* Get a list of in-scope namespace codes. If an array of namespace codes is needed, without
* actually constructing the namespace nodes, a caller may create the NamespaceIterator and then
* call this method. The result is an array of integers, each containing a prefix code in the top
* half and a uri code in the bottom half. Note that calling this method is destructive: the
* iterator is consumed and cannot be used again.
* @param element the element whose nodes are required
* @return the list of in scope namespaces
*/
public static int[] getInScopeNamespaceCodes(NodeInfo element) {
boolean first = true;
IntHashSet declared = null;
IntHashSet undeclared = null;
int[] buffer = new int[8];
NodeInfo node = element;
while (node != null && node.getNodeKind() == Type.ELEMENT) {
int[] nslist = node.getDeclaredNamespaces(buffer);
if (nslist != null) {
for (int i=0; i> 16);
if (uriCode == 0) {
// this is an undeclaration
undeclared.add(prefixCode);
} else {
if (!undeclared.contains(prefixCode)) {
declared.add(nslist[i]);
undeclared.add(prefixCode);
}
}
}
}
node = node.getParent();
}
if (first) {
return XML_NAMESPACE_CODE_ARRAY;
} else {
int[] codes = new int[declared.size()];
int i = 0;
IntIterator ii = declared.iterator();
while (ii.hasNext()) {
codes[i++] = ii.next();
}
return codes;
}
}
private static int[] XML_NAMESPACE_CODE_ARRAY = {NamespaceConstant.XML_NAMESPACE_CODE};
/**
* Inner class: a model-independent representation of a namespace node
*/
public static class NamespaceNodeImpl implements NodeInfo, FingerprintedNode {
NodeInfo element;
int nscode;
int position;
int namecode;
/**
* Create a namespace node
* @param element the parent element of the namespace node
* @param nscode the namespace code, representing the prefix and URI of the namespace binding
* @param position maintains document order among namespace nodes for the same element
*/
public NamespaceNodeImpl(NodeInfo element, int nscode, int position) {
this.element = element;
this.nscode = nscode;
this.position = position;
NamePool pool = element.getNamePool();
String prefix = pool.getPrefixFromNamespaceCode(nscode);
if ("".equals(prefix)) {
namecode = -1;
} else {
namecode = pool.allocate("", "", prefix);
}
}
/**
* Get the kind of node. This will be a value such as Type.ELEMENT or Type.ATTRIBUTE
*
* @return an integer identifying the kind of node. These integer values are the
* same as those used in the DOM
* @see net.sf.saxon.type.Type
*/
public int getNodeKind() {
return Type.NAMESPACE;
}
/**
* Determine whether this is the same node as another node.
* Note: a.isSameNodeInfo(b) if and only if generateId(a)==generateId(b).
* This method has the same semantics as isSameNode() in DOM Level 3, but
* works on Saxon NodeInfo objects rather than DOM Node objects.
*
* @param other the node to be compared with this node
* @return true if this NodeInfo object and the supplied NodeInfo object represent
* the same node in the tree.
*/
public boolean isSameNodeInfo(NodeInfo other) {
return other instanceof NamespaceNodeImpl &&
element.isSameNodeInfo(((NamespaceNodeImpl)other).element) &&
nscode == ((NamespaceNodeImpl)other).nscode;
}
/**
* The equals() method compares nodes for identity. It is defined to give the same result
* as isSameNodeInfo().
* @param other the node to be compared with this node
* @return true if this NodeInfo object and the supplied NodeInfo object represent
* the same node in the tree.
* @since 8.7 Previously, the effect of the equals() method was not defined. Callers
* should therefore be aware that third party implementations of the NodeInfo interface may
* not implement the correct semantics. It is safer to use isSameNodeInfo() for this reason.
* The equals() method has been defined because it is useful in contexts such as a Java Set or HashMap.
*/
public boolean equals(Object other) {
return other instanceof NodeInfo && isSameNodeInfo((NodeInfo)other);
}
/**
* The hashCode() method obeys the contract for hashCode(): that is, if two objects are equal
* (represent the same node) then they must have the same hashCode()
* @since 8.7 Previously, the effect of the equals() and hashCode() methods was not defined. Callers
* should therefore be aware that third party implementations of the NodeInfo interface may
* not implement the correct semantics.
*/
public int hashCode() {
return element.hashCode() ^ (position<<13);
}
/**
* Get the System ID for the node.
*
* @return the System Identifier of the entity in the source document
* containing the node, or null if not known. Note this is not the
* same as the base URI: the base URI can be modified by xml:base, but
* the system ID cannot.
*/
public String getSystemId() {
return element.getSystemId();
}
/**
* Get the Base URI for the node, that is, the URI used for resolving a relative URI contained
* in the node. This will be the same as the System ID unless xml:base has been used.
*
* @return the base URI of the node
*/
public String getBaseURI() {
return null; // the base URI of a namespace node is the empty sequence
}
/**
* Get line number
*
* @return the line number of the node in its original source document; or
* -1 if not available
*/
public int getLineNumber() {
return element.getLineNumber();
}
/**
* Determine the relative position of this node and another node, in document order.
* The other node will always be in the same document.
*
* @param other The other node, whose position is to be compared with this
* node
* @return -1 if this node precedes the other node, +1 if it follows the
* other node, or 0 if they are the same node. (In this case,
* isSameNode() will always return true, and the two nodes will
* produce the same result for generateId())
*/
public int compareOrder(NodeInfo other) {
if (other instanceof NamespaceNodeImpl && element.isSameNodeInfo(((NamespaceNodeImpl)other).element)) {
// JDK 1.5: return Integer.signum(position - ((NamespaceNodeI)other).position);
int c = position - ((NamespaceNodeImpl)other).position;
if (c == 0) return 0;
if (c < 0) return -1;
return +1;
} else if (element.isSameNodeInfo(other)) {
return +1;
} else {
return element.compareOrder(other);
}
}
/**
* Return the string value of the node. The interpretation of this depends on the type
* of node. For a namespace node, it is the namespace URI.
*
* @return the string value of the node
*/
public String getStringValue() {
return element.getNamePool().getURIFromURICode((short)(nscode & 0xffff));
}
/**
* Get the value of the item as a CharSequence. This is in some cases more efficient than
* the version of the method that returns a String.
*/
public CharSequence getStringValueCS() {
return getStringValue();
}
/**
* Get name code. The name code is a coded form of the node name: two nodes
* with the same name code have the same namespace URI, the same local name,
* and the same prefix. By masking the name code with &0xfffff, you get a
* fingerprint: two nodes with the same fingerprint have the same local name
* and namespace URI.
*
* @return an integer name code, which may be used to obtain the actual node
* name from the name pool
* @see NamePool#allocate allocate
* @see NamePool#getFingerprint getFingerprint
*/
public int getNameCode() {
return namecode;
}
/**
* Get fingerprint. The fingerprint is a coded form of the expanded name
* of the node: two nodes
* with the same name code have the same namespace URI and the same local name.
* A fingerprint of -1 should be returned for a node with no name.
*
* @return an integer fingerprint; two nodes with the same fingerprint have
* the same expanded QName
*/
public int getFingerprint() {
if (namecode == -1) {
return -1;
}
return namecode & NamePool.FP_MASK;
}
/**
* Get the local part of the name of this node. This is the name after the ":" if any.
*
* @return the local part of the name. For an unnamed node, returns "". Unlike the DOM
* interface, this returns the full name in the case of a non-namespaced name.
*/
public String getLocalPart() {
if (namecode == -1) {
return "";
} else {
return element.getNamePool().getLocalName(namecode);
}
}
/**
* Get the URI part of the name of this node. This is the URI corresponding to the
* prefix, or the URI of the default namespace if appropriate.
*
* @return The URI of the namespace of this node. Since the name of a namespace
* node is always an NCName (the namespace prefix), this method always returns "".
*/
public String getURI() {
return "";
}
/**
* Get the display name of this node. For elements and attributes this is [prefix:]localname.
* For unnamed nodes, it is an empty string.
*
* @return The display name of this node. For a node with no name, return
* an empty string.
*/
public String getDisplayName() {
return getLocalPart();
}
/**
* Get the prefix of the name of the node. This is defined only for elements and attributes.
* If the node has no prefix, or for other kinds of node, return a zero-length string.
*
* @return The prefix of the name of the node.
*/
public String getPrefix() {
return "";
}
/**
* Get the configuration
*/
public Configuration getConfiguration() {
return element.getConfiguration();
}
/**
* Get the NamePool that holds the namecode for this node
*
* @return the namepool
*/
public NamePool getNamePool() {
return element.getNamePool();
}
/**
* Get the type annotation of this node, if any.
* Returns -1 for kinds of nodes that have no annotation, and for elements annotated as
* untyped, and attributes annotated as untypedAtomic.
*
* @return the type annotation of the node.
* @see net.sf.saxon.type.Type
*/
public int getTypeAnnotation() {
return -1;
}
/**
* Get the NodeInfo object representing the parent of this node
*
* @return the parent of this node; null if this node has no parent
*/
public NodeInfo getParent() {
return element;
}
/**
* Return an iteration over all the nodes reached by the given axis from this node
*
* @param axisNumber an integer identifying the axis; one of the constants
* defined in class net.sf.saxon.om.Axis
* @return an AxisIterator that scans the nodes reached by the axis in
* turn.
* @throws UnsupportedOperationException if the namespace axis is
* requested and this axis is not supported for this implementation.
* @see Axis
*/
public AxisIterator iterateAxis(byte axisNumber) {
return iterateAxis(axisNumber, AnyNodeTest.getInstance());
}
/**
* Return an iteration over all the nodes reached by the given axis from this node
* that match a given NodeTest
*
* @param axisNumber an integer identifying the axis; one of the constants
* defined in class net.sf.saxon.om.Axis
* @param nodeTest A pattern to be matched by the returned nodes; nodes
* that do not match this pattern are not included in the result
* @return a NodeEnumeration that scans the nodes reached by the axis in
* turn.
* @throws UnsupportedOperationException if the namespace axis is
* requested and this axis is not supported for this implementation.
* @see Axis
*/
public AxisIterator iterateAxis(byte axisNumber, NodeTest nodeTest) {
switch (axisNumber) {
case Axis.ANCESTOR:
return element.iterateAxis(Axis.ANCESTOR_OR_SELF, nodeTest);
case Axis.ANCESTOR_OR_SELF:
if (nodeTest.matches(this)) {
return new PrependIterator(this, element.iterateAxis(Axis.ANCESTOR_OR_SELF, nodeTest));
} else {
return element.iterateAxis(Axis.ANCESTOR_OR_SELF, nodeTest);
}
case Axis.ATTRIBUTE:
case Axis.CHILD:
case Axis.DESCENDANT:
case Axis.DESCENDANT_OR_SELF:
case Axis.FOLLOWING_SIBLING:
case Axis.NAMESPACE:
case Axis.PRECEDING_SIBLING:
return EmptyIterator.getInstance();
case Axis.FOLLOWING:
return new Navigator.AxisFilter(
new Navigator.FollowingEnumeration(this),
nodeTest);
case Axis.PARENT:
return Navigator.filteredSingleton(element, nodeTest);
case Axis.PRECEDING:
return new Navigator.AxisFilter(
new Navigator.PrecedingEnumeration(this, false),
nodeTest);
case Axis.SELF:
return Navigator.filteredSingleton(this, nodeTest);
case Axis.PRECEDING_OR_ANCESTOR:
return new Navigator.AxisFilter(
new Navigator.PrecedingEnumeration(this, true),
nodeTest);
default:
throw new IllegalArgumentException("Unknown axis number " + axisNumber);
}
}
/**
* Get the value of a given attribute of this node
*
* @param fingerprint The fingerprint of the attribute name
* @return the attribute value if it exists or null if not
*/
public String getAttributeValue(int fingerprint) {
return null;
}
/**
* Get the root node of the tree containing this node
*
* @return the NodeInfo representing the top-level ancestor of this node.
* This will not necessarily be a document node
*/
public NodeInfo getRoot() {
return element.getRoot();
}
/**
* Get the root node, if it is a document node.
*
* @return the DocumentInfo representing the containing document. If this
* node is part of a tree that does not have a document node as its
* root, return null.
*/
public DocumentInfo getDocumentRoot() {
return element.getDocumentRoot();
}
/**
* Determine whether the node has any children.
* Note: the result is equivalent to
* getEnumeration(Axis.CHILD, AnyNodeTest.getInstance()).hasNext()
*
* @return True if the node has one or more children
*/
public boolean hasChildNodes() {
return false;
}
/**
* Get a character string that uniquely identifies this node.
* Note: a.isSameNode(b) if and only if generateId(a)==generateId(b)
*
* @param buffer buffer to hold a string that uniquely identifies this node, across all
* documents.
*/
public void generateId(FastStringBuffer buffer) {
element.generateId(buffer);
buffer.append("n");
buffer.append(Integer.toString(position));
}
/**
* Get the document number of the document containing this node. For a free-standing
* orphan node, just return the hashcode.
*/
public int getDocumentNumber() {
return element.getDocumentNumber();
}
/**
* Copy this node to a given outputter
*
* @param out the Receiver to which the node should be copied
* @param whichNamespaces in the case of an element, controls
* which namespace nodes should be copied. Values are {@link #NO_NAMESPACES},
* {@link #LOCAL_NAMESPACES}, {@link #ALL_NAMESPACES}
* @param copyAnnotations indicates whether the type annotations
* of element and attribute nodes should be copied
* @param locationId If non-zero, identifies the location of the instruction
* that requested this copy. If zero, indicates that the location information
* for the original node is to be copied; in this case the Receiver must be
* a LocationCopier
* @throws net.sf.saxon.trans.XPathException
*
*/
public void copy(Receiver out, int whichNamespaces, boolean copyAnnotations, int locationId) throws XPathException {
out.namespace(nscode, ReceiverOptions.REJECT_DUPLICATES);
}
/**
* Get all namespace undeclarations and undeclarations defined on this element.
*
* @param buffer If this is non-null, and the result array fits in this buffer, then the result
* may overwrite the contents of this array, to avoid the cost of allocating a new array on the heap.
* @return An array of integers representing the namespace declarations and undeclarations present on
* this element. For a node other than an element, return null. Otherwise, the returned array is a
* sequence of namespace codes, whose meaning may be interpreted by reference to the name pool. The
* top half word of each namespace code represents the prefix, the bottom half represents the URI.
* If the bottom half is zero, then this is a namespace undeclaration rather than a declaration.
* The XML namespace is never included in the list. If the supplied array is larger than required,
* then the first unused entry will be set to -1.
*
* For a node other than an element, the method returns null.
*/
public int[] getDeclaredNamespaces(int[] buffer) {
return null;
}
/**
* Set the system identifier for this Source.
*
* The system identifier is optional if the source does not
* get its data from a URL, but it may still be useful to provide one.
* The application can use a system identifier, for example, to resolve
* relative URIs and to include in error messages and warnings.
*
* @param systemId The system identifier as a URL string.
*/
public void setSystemId(String systemId) {
}
/**
* Get the typed value of the item
*
* @return the typed value of the item. In general this will be a sequence
* @throws net.sf.saxon.trans.XPathException
* where no typed value is available, e.g. for
* an element with complex content
*/
public SequenceIterator getTypedValue() throws XPathException {
return SingletonIterator.makeIterator(new StringValue(getStringValueCS()));
}
/**
* Get the typed value. The result of this method will always be consistent with the method
* {@link Item#getTypedValue()}. However, this method is often more convenient and may be
* more efficient, especially in the common case where the value is expected to be a singleton.
*
* @return the typed value. If requireSingleton is set to true, the result will always be an
* AtomicValue. In other cases it may be a Value representing a sequence whose items are atomic
* values.
* @since 8.5
*/
public Value atomize() throws XPathException {
return new StringValue(getStringValueCS());
}
}
}
//
// The contents of this file are subject to the Mozilla Public License Version 1.0 (the "License");
// you may not use this file except in compliance with the License. You may obtain a copy of the
// License at http://www.mozilla.org/MPL/
//
// Software distributed under the License is distributed on an "AS IS" basis,
// WITHOUT WARRANTY OF ANY KIND, either express or implied.
// See the License for the specific language governing rights and limitations under the License.
//
// The Original Code is: all this file.
//
// The Initial Developer of the Original Code is Michael H. Kay
//
// Portions created by (your name) are Copyright (C) (your legal entity). All Rights Reserved.
//
// Contributor(s): none.
//
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