2
* Licensed to the Apache Software Foundation (ASF) under one
3
* or more contributor license agreements. See the NOTICE file
4
* distributed with this work for additional information
5
* regarding copyright ownership. The ASF licenses this file
6
* to you under the Apache License, Version 2.0 (the "License");
7
* you may not use this file except in compliance with the License.
8
* You may obtain a copy of the License at
10
* http://www.apache.org/licenses/LICENSE-2.0
12
* Unless required by applicable law or agreed to in writing, software
13
* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15
* See the License for the specific language governing permissions and
16
* limitations under the License.
19
* $Id: ElemTemplateElement.java,v 1.2 2009/12/10 03:18:29 matthewoliver Exp $
21
package org.apache.xalan.templates;
23
import java.io.Serializable;
24
import java.util.ArrayList;
25
import java.util.Enumeration;
26
import java.util.List;
28
import javax.xml.transform.SourceLocator;
29
import javax.xml.transform.TransformerException;
31
import org.apache.xalan.res.XSLMessages;
32
import org.apache.xalan.res.XSLTErrorResources;
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import org.apache.xalan.transformer.TransformerImpl;
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import org.apache.xml.serializer.SerializationHandler;
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import org.apache.xml.utils.PrefixResolver;
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import org.apache.xml.utils.UnImplNode;
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import org.apache.xpath.ExpressionNode;
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import org.apache.xpath.WhitespaceStrippingElementMatcher;
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import org.w3c.dom.DOMException;
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import org.w3c.dom.Document;
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import org.w3c.dom.Node;
43
import org.w3c.dom.NodeList;
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import org.xml.sax.helpers.NamespaceSupport;
48
* An instance of this class represents an element inside
49
* an xsl:template class. It has a single "execute" method
50
* which is expected to perform the given action on the
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* This class acts like a Element node, and implements the
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* Element interface, but is not a full implementation
54
* of that interface... it only implements enough for
55
* basic traversal of the tree.
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public class ElemTemplateElement extends UnImplNode
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implements PrefixResolver, Serializable, ExpressionNode,
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WhitespaceStrippingElementMatcher, XSLTVisitable
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static final long serialVersionUID = 4440018597841834447L;
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* Construct a template element instance.
70
public ElemTemplateElement(){}
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* Tell if this template is a compiled template.
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* @return Boolean flag indicating whether this is a compiled template
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public boolean isCompiledTemplate()
83
* Get an integer representation of the element type.
85
* @return An integer representation of the element, defined in the
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* @see org.apache.xalan.templates.Constants
89
public int getXSLToken()
91
return Constants.ELEMNAME_UNDEFINED;
95
* Return the node name.
97
* @return An invalid node name
99
public String getNodeName()
101
return "Unknown XSLT Element";
105
* For now, just return the result of getNodeName(), which
108
* @return The result of getNodeName().
110
public String getLocalName()
113
return getNodeName();
118
* This function will be called on top-level elements
119
* only, just before the transform begins.
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* @param transformer The XSLT TransformerFactory.
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* @throws TransformerException
125
public void runtimeInit(TransformerImpl transformer) throws TransformerException{}
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* Execute the element's primary function. Subclasses of this
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* function may recursivly execute down the element tree.
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* @param transformer The XSLT TransformerFactory.
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* @throws TransformerException if any checked exception occurs.
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TransformerImpl transformer)
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throws TransformerException{}
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* Get the owning "composed" stylesheet. This looks up the
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* inheritance chain until it calls getStylesheetComposed
142
* on a Stylesheet object, which will Get the owning
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* aggregated stylesheet, or that stylesheet if it is aggregated.
145
* @return the owning "composed" stylesheet.
147
public StylesheetComposed getStylesheetComposed()
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return m_parentNode.getStylesheetComposed();
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* Get the owning stylesheet. This looks up the
154
* inheritance chain until it calls getStylesheet
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* on a Stylesheet object, which will return itself.
157
* @return the owning stylesheet
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public Stylesheet getStylesheet()
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return (null==m_parentNode) ? null : m_parentNode.getStylesheet();
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* Get the owning root stylesheet. This looks up the
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* inheritance chain until it calls StylesheetRoot
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* on a Stylesheet object, which will return a reference
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* to the root stylesheet.
170
* @return the owning root stylesheet
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public StylesheetRoot getStylesheetRoot()
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return m_parentNode.getStylesheetRoot();
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* This function is called during recomposition to
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* control how this element is composed.
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public void recompose(StylesheetRoot root) throws TransformerException
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* This function is called after everything else has been
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* recomposed, and allows the template to set remaining
188
* values that may be based on some other property that
189
* depends on recomposition.
191
public void compose(StylesheetRoot sroot) throws TransformerException
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resolvePrefixTables();
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ElemTemplateElement t = getFirstChildElem();
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m_hasTextLitOnly = ((t != null)
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&& (t.getXSLToken() == Constants.ELEMNAME_TEXTLITERALRESULT)
197
&& (t.getNextSiblingElem() == null));
199
StylesheetRoot.ComposeState cstate = sroot.getComposeState();
200
cstate.pushStackMark();
204
* This after the template's children have been composed.
206
public void endCompose(StylesheetRoot sroot) throws TransformerException
208
StylesheetRoot.ComposeState cstate = sroot.getComposeState();
209
cstate.popStackMark();
213
* Throw a template element runtime error. (Note: should we throw a TransformerException instead?)
215
* @param msg key of the error that occured.
216
* @param args Arguments to be used in the message
218
public void error(String msg, Object[] args)
221
String themsg = XSLMessages.createMessage(msg, args);
223
throw new RuntimeException(XSLMessages.createMessage(
224
XSLTErrorResources.ER_ELEMTEMPLATEELEM_ERR,
225
new Object[]{ themsg }));
231
* @param msg Message key for the error
234
public void error(String msg)
240
// Implemented DOM Element methods.
242
* Add a child to the child list.
243
* NOTE: This presumes the child did not previously have a parent.
244
* Making that assumption makes this a less expensive operation -- but
245
* requires that if you *do* want to reparent a node, you use removeChild()
246
* first to remove it from its previous context. Failing to do so will
249
* @param newChild Child to be added to child list
251
* @return Child just added to the child list
252
* @throws DOMException
254
public Node appendChild(Node newChild) throws DOMException
257
if (null == newChild)
259
error(XSLTErrorResources.ER_NULL_CHILD, null); //"Trying to add a null child!");
262
ElemTemplateElement elem = (ElemTemplateElement) newChild;
264
if (null == m_firstChild)
270
ElemTemplateElement last = (ElemTemplateElement) getLastChild();
272
last.m_nextSibling = elem;
275
elem.m_parentNode = this;
281
* Add a child to the child list.
282
* NOTE: This presumes the child did not previously have a parent.
283
* Making that assumption makes this a less expensive operation -- but
284
* requires that if you *do* want to reparent a node, you use removeChild()
285
* first to remove it from its previous context. Failing to do so will
288
* @param elem Child to be added to child list
290
* @return Child just added to the child list
292
public ElemTemplateElement appendChild(ElemTemplateElement elem)
297
error(XSLTErrorResources.ER_NULL_CHILD, null); //"Trying to add a null child!");
300
if (null == m_firstChild)
306
ElemTemplateElement last = getLastChildElem();
308
last.m_nextSibling = elem;
311
elem.setParentElem(this);
318
* Tell if there are child nodes.
320
* @return True if there are child nodes
322
public boolean hasChildNodes()
324
return (null != m_firstChild);
328
* Get the type of the node.
330
* @return Constant for this node type
332
public short getNodeType()
334
return org.w3c.dom.Node.ELEMENT_NODE;
338
* Return the nodelist (same reference).
340
* @return The nodelist containing the child nodes (this)
342
public NodeList getChildNodes()
349
* ADDED 9/8/200 to support compilation.
350
* TODO: ***** Alternative is "removeMe() from my parent if any"
351
* ... which is less well checked, but more convenient in some cases.
352
* Given that we assume only experts are calling this class, it might
353
* be preferable. It's less DOMish, though.
355
* @param childETE The child to remove. This operation is a no-op
356
* if oldChild is not a child of this node.
358
* @return the removed child, or null if the specified
359
* node was not a child of this element.
361
public ElemTemplateElement removeChild(ElemTemplateElement childETE)
364
if (childETE == null || childETE.m_parentNode != this)
367
// Pointers to the child
368
if (childETE == m_firstChild)
369
m_firstChild = childETE.m_nextSibling;
372
ElemTemplateElement prev = childETE.getPreviousSiblingElem();
374
prev.m_nextSibling = childETE.m_nextSibling;
377
// Pointers from the child
378
childETE.m_parentNode = null;
379
childETE.m_nextSibling = null;
385
* Replace the old child with a new child.
387
* @param newChild New child to replace with
388
* @param oldChild Old child to be replaced
390
* @return The new child
392
* @throws DOMException
394
public Node replaceChild(Node newChild, Node oldChild) throws DOMException
397
if (oldChild == null || oldChild.getParentNode() != this)
400
ElemTemplateElement newChildElem = ((ElemTemplateElement) newChild);
401
ElemTemplateElement oldChildElem = ((ElemTemplateElement) oldChild);
403
// Fix up previous sibling.
404
ElemTemplateElement prev =
405
(ElemTemplateElement) oldChildElem.getPreviousSibling();
408
prev.m_nextSibling = newChildElem;
410
// Fix up parent (this)
411
if (m_firstChild == oldChildElem)
412
m_firstChild = newChildElem;
414
newChildElem.m_parentNode = this;
415
oldChildElem.m_parentNode = null;
416
newChildElem.m_nextSibling = oldChildElem.m_nextSibling;
417
oldChildElem.m_nextSibling = null;
419
// newChildElem.m_stylesheet = oldChildElem.m_stylesheet;
420
// oldChildElem.m_stylesheet = null;
425
* Unimplemented. See org.w3c.dom.Node
427
* @param newChild New child node to insert
428
* @param refChild Insert in front of this child
432
* @throws DOMException
434
public Node insertBefore(Node newChild, Node refChild) throws DOMException
438
appendChild(newChild);
442
if(newChild == refChild)
448
Node node = m_firstChild;
450
boolean foundit = false;
454
// If the newChild is already in the tree, it is first removed.
458
((ElemTemplateElement)prev).m_nextSibling =
459
(ElemTemplateElement)node.getNextSibling();
461
m_firstChild = (ElemTemplateElement)node.getNextSibling();
462
node = node.getNextSibling();
463
continue; // prev remains the same.
469
((ElemTemplateElement)prev).m_nextSibling = (ElemTemplateElement)newChild;
473
m_firstChild = (ElemTemplateElement)newChild;
475
((ElemTemplateElement)newChild).m_nextSibling = (ElemTemplateElement)refChild;
476
((ElemTemplateElement)newChild).setParentElem(this);
478
node = node.getNextSibling();
483
node = node.getNextSibling();
487
throw new DOMException(DOMException.NOT_FOUND_ERR,
488
"refChild was not found in insertBefore method!");
495
* Replace the old child with a new child.
497
* @param newChildElem New child to replace with
498
* @param oldChildElem Old child to be replaced
500
* @return The new child
502
* @throws DOMException
504
public ElemTemplateElement replaceChild(ElemTemplateElement newChildElem,
505
ElemTemplateElement oldChildElem)
508
if (oldChildElem == null || oldChildElem.getParentElem() != this)
511
// Fix up previous sibling.
512
ElemTemplateElement prev =
513
oldChildElem.getPreviousSiblingElem();
516
prev.m_nextSibling = newChildElem;
518
// Fix up parent (this)
519
if (m_firstChild == oldChildElem)
520
m_firstChild = newChildElem;
522
newChildElem.m_parentNode = this;
523
oldChildElem.m_parentNode = null;
524
newChildElem.m_nextSibling = oldChildElem.m_nextSibling;
525
oldChildElem.m_nextSibling = null;
527
// newChildElem.m_stylesheet = oldChildElem.m_stylesheet;
528
// oldChildElem.m_stylesheet = null;
533
* NodeList method: Count the immediate children of this node
535
* @return The count of children of this node
537
public int getLength()
540
// It is assumed that the getChildNodes call synchronized
541
// the children. Therefore, we can access the first child
542
// reference directly.
545
for (ElemTemplateElement node = m_firstChild; node != null;
546
node = node.m_nextSibling)
555
* NodeList method: Return the Nth immediate child of this node, or
556
* null if the index is out of bounds.
558
* @param index Index of child to find
559
* @return org.w3c.dom.Node: the child node at given index
561
public Node item(int index)
564
// It is assumed that the getChildNodes call synchronized
565
// the children. Therefore, we can access the first child
566
// reference directly.
567
ElemTemplateElement node = m_firstChild;
569
for (int i = 0; i < index && node != null; i++)
571
node = node.m_nextSibling;
578
* Get the stylesheet owner.
580
* @return The stylesheet owner
582
public Document getOwnerDocument()
584
return getStylesheet();
588
* Get the owning xsl:template element.
590
* @return The owning xsl:template element, this element if it is a xsl:template, or null if not found.
592
public ElemTemplate getOwnerXSLTemplate()
594
ElemTemplateElement el = this;
595
int type = el.getXSLToken();
596
while((null != el) && (type != Constants.ELEMNAME_TEMPLATE))
598
el = el.getParentElem();
600
type = el.getXSLToken();
602
return (ElemTemplate)el;
607
* Return the element name.
609
* @return The element name
611
public String getTagName()
613
return getNodeName();
617
* Tell if this element only has one text child, for optimization purposes.
618
* @return true of this element only has one text literal child.
620
public boolean hasTextLitOnly()
622
return m_hasTextLitOnly;
626
* Return the base identifier.
628
* @return The base identifier
630
public String getBaseIdentifier()
633
// Should this always be absolute?
634
return this.getSystemId();
637
/** line number where the current document event ends.
639
private int m_lineNumber;
641
/** line number where the current document event ends.
643
private int m_endLineNumber;
646
* Return the line number where the current document event ends.
647
* Note that this is the line position of the first character
648
* after the text associated with the document event.
649
* @return The line number, or -1 if none is available.
650
* @see #getColumnNumber
652
public int getEndLineNumber()
654
return m_endLineNumber;
658
* Return the line number where the current document event ends.
659
* Note that this is the line position of the first character
660
* after the text associated with the document event.
661
* @return The line number, or -1 if none is available.
662
* @see #getColumnNumber
664
public int getLineNumber()
669
/** the column number where the current document event ends.
671
private int m_columnNumber;
673
/** the column number where the current document event ends.
675
private int m_endColumnNumber;
678
* Return the column number where the current document event ends.
679
* Note that this is the column number of the first
680
* character after the text associated with the document
681
* event. The first column in a line is position 1.
682
* @return The column number, or -1 if none is available.
683
* @see #getLineNumber
685
public int getEndColumnNumber()
687
return m_endColumnNumber;
691
* Return the column number where the current document event ends.
692
* Note that this is the column number of the first
693
* character after the text associated with the document
694
* event. The first column in a line is position 1.
695
* @return The column number, or -1 if none is available.
696
* @see #getLineNumber
698
public int getColumnNumber()
700
return m_columnNumber;
704
* Return the public identifier for the current document event.
705
* <p>This will be the public identifier
706
* @return A string containing the public identifier, or
707
* null if none is available.
710
public String getPublicId()
712
return (null != m_parentNode) ? m_parentNode.getPublicId() : null;
716
* Return the system identifier for the current document event.
718
* <p>If the system identifier is a URL, the parser must resolve it
719
* fully before passing it to the application.</p>
721
* @return A string containing the system identifier, or null
722
* if none is available.
725
public String getSystemId()
727
Stylesheet sheet=getStylesheet();
728
return (sheet==null) ? null : sheet.getHref();
732
* Set the location information for this element.
734
* @param locator Source Locator with location information for this element
736
public void setLocaterInfo(SourceLocator locator)
738
m_lineNumber = locator.getLineNumber();
739
m_columnNumber = locator.getColumnNumber();
743
* Set the end location information for this element.
745
* @param locator Source Locator with location information for this element
747
public void setEndLocaterInfo(SourceLocator locator)
749
m_endLineNumber = locator.getLineNumber();
750
m_endColumnNumber = locator.getColumnNumber();
754
* Tell if this element has the default space handling
755
* turned off or on according to the xml:space attribute.
758
private boolean m_defaultSpace = true;
761
* Tell if this element only has one text child, for optimization purposes.
764
private boolean m_hasTextLitOnly = false;
767
* Tell if this element only has one text child, for optimization purposes.
770
protected boolean m_hasVariableDecl = false;
772
public boolean hasVariableDecl()
774
return m_hasVariableDecl;
778
* Set the "xml:space" attribute.
779
* A text node is preserved if an ancestor element of the text node
780
* has an xml:space attribute with a value of preserve, and
781
* no closer ancestor element has xml:space with a value of default.
782
* @see <a href="http://www.w3.org/TR/xslt#strip">strip in XSLT Specification</a>
783
* @see <a href="http://www.w3.org/TR/xslt#section-Creating-Text">section-Creating-Text in XSLT Specification</a>
785
* @param v Enumerated value, either Constants.ATTRVAL_PRESERVE
786
* or Constants.ATTRVAL_STRIP.
788
public void setXmlSpace(int v)
790
m_defaultSpace = ((Constants.ATTRVAL_STRIP == v) ? true : false);
794
* Get the "xml:space" attribute.
795
* A text node is preserved if an ancestor element of the text node
796
* has an xml:space attribute with a value of preserve, and
797
* no closer ancestor element has xml:space with a value of default.
798
* @see <a href="http://www.w3.org/TR/xslt#strip">strip in XSLT Specification</a>
799
* @see <a href="http://www.w3.org/TR/xslt#section-Creating-Text">section-Creating-Text in XSLT Specification</a>
801
* @return The value of the xml:space attribute
803
public boolean getXmlSpace()
805
return m_defaultSpace;
809
* The list of namespace declarations for this element only.
812
private List m_declaredPrefixes;
815
* Return a table that contains all prefixes available
816
* within this element context.
818
* @return Vector containing the prefixes available within this
821
public List getDeclaredPrefixes()
823
return m_declaredPrefixes;
827
* From the SAX2 helper class, set the namespace table for
828
* this element. Take care to call resolveInheritedNamespaceDecls.
829
* after all namespace declarations have been added.
831
* @param nsSupport non-null reference to NamespaceSupport from
832
* the ContentHandler.
834
* @throws TransformerException
836
public void setPrefixes(NamespaceSupport nsSupport) throws TransformerException
838
setPrefixes(nsSupport, false);
842
* Copy the namespace declarations from the NamespaceSupport object.
843
* Take care to call resolveInheritedNamespaceDecls.
844
* after all namespace declarations have been added.
846
* @param nsSupport non-null reference to NamespaceSupport from
847
* the ContentHandler.
848
* @param excludeXSLDecl true if XSLT namespaces should be ignored.
850
* @throws TransformerException
852
public void setPrefixes(NamespaceSupport nsSupport, boolean excludeXSLDecl)
853
throws TransformerException
856
Enumeration decls = nsSupport.getDeclaredPrefixes();
858
while (decls.hasMoreElements())
860
String prefix = (String) decls.nextElement();
862
if (null == m_declaredPrefixes)
863
m_declaredPrefixes = new ArrayList();
865
String uri = nsSupport.getURI(prefix);
867
if (excludeXSLDecl && uri.equals(Constants.S_XSLNAMESPACEURL))
870
// System.out.println("setPrefixes - "+prefix+", "+uri);
871
XMLNSDecl decl = new XMLNSDecl(prefix, uri, false);
873
m_declaredPrefixes.add(decl);
878
* Fullfill the PrefixResolver interface. Calling this for this class
879
* will throw an error.
881
* @param prefix The prefix to look up, which may be an empty string ("")
882
* for the default Namespace.
883
* @param context The node context from which to look up the URI.
885
* @return null if the error listener does not choose to throw an exception.
887
public String getNamespaceForPrefix(String prefix, org.w3c.dom.Node context)
889
this.error(XSLTErrorResources.ER_CANT_RESOLVE_NSPREFIX, null);
895
* Given a namespace, get the corrisponding prefix.
896
* 9/15/00: This had been iteratively examining the m_declaredPrefixes
897
* field for this node and its parents. That makes life difficult for
898
* the compilation experiment, which doesn't have a static vector of
899
* local declarations. Replaced a recursive solution, which permits
900
* easier subclassing/overriding.
902
* @param prefix non-null reference to prefix string, which should map
903
* to a namespace URL.
905
* @return The namespace URL that the prefix maps to, or null if no
906
* mapping can be found.
908
public String getNamespaceForPrefix(String prefix)
910
// if (null != prefix && prefix.equals("xmlns"))
912
// return Constants.S_XMLNAMESPACEURI;
915
List nsDecls = m_declaredPrefixes;
919
int n = nsDecls.size();
920
if(prefix.equals(Constants.ATTRVAL_DEFAULT_PREFIX))
925
for (int i = 0; i < n; i++)
927
XMLNSDecl decl = (XMLNSDecl) nsDecls.get(i);
929
if (prefix.equals(decl.getPrefix()))
930
return decl.getURI();
934
// Not found; ask our ancestors
935
if (null != m_parentNode)
936
return m_parentNode.getNamespaceForPrefix(prefix);
938
// JJK: No ancestors; try implicit
939
// %REVIEW% Are there literals somewhere that we should use instead?
940
// %REVIEW% Is this really the best place to patch?
941
if("xml".equals(prefix))
942
return "http://www.w3.org/XML/1998/namespace";
944
// No parent, so no definition
949
* The table of {@link XMLNSDecl}s for this element
950
* and all parent elements, screened for excluded prefixes.
953
private List m_prefixTable;
956
* Return a table that contains all prefixes available
957
* within this element context.
959
* @return reference to vector of {@link XMLNSDecl}s, which may be null.
961
List getPrefixTable()
963
return m_prefixTable;
966
void setPrefixTable(List list) {
967
m_prefixTable = list;
971
* Get whether or not the passed URL is contained flagged by
972
* the "extension-element-prefixes" property. This method is overridden
973
* by {@link ElemLiteralResult#containsExcludeResultPrefix}.
974
* @see <a href="http://www.w3.org/TR/xslt#extension-element">extension-element in XSLT Specification</a>
976
* @param prefix non-null reference to prefix that might be excluded.
978
* @return true if the prefix should normally be excluded.
980
public boolean containsExcludeResultPrefix(String prefix, String uri)
982
ElemTemplateElement parent = this.getParentElem();
984
return parent.containsExcludeResultPrefix(prefix, uri);
990
* Tell if the result namespace decl should be excluded. Should be called before
991
* namespace aliasing (I think).
993
* @param prefix non-null reference to prefix.
994
* @param uri reference to namespace that prefix maps to, which is protected
995
* for null, but should really never be passed as null.
997
* @return true if the given namespace should be excluded.
999
* @throws TransformerException
1001
private boolean excludeResultNSDecl(String prefix, String uri)
1002
throws TransformerException
1007
if (uri.equals(Constants.S_XSLNAMESPACEURL)
1008
|| getStylesheet().containsExtensionElementURI(uri))
1011
if (containsExcludeResultPrefix(prefix, uri))
1019
* Combine the parent's namespaces with this namespace
1020
* for fast processing, taking care to reference the
1021
* parent's namespace if this namespace adds nothing new.
1022
* (Recursive method, walking the elements depth-first,
1023
* processing parents before children).
1024
* Note that this method builds m_prefixTable with aliased
1025
* namespaces, *not* the original namespaces.
1027
* @throws TransformerException
1029
public void resolvePrefixTables() throws TransformerException
1031
// Always start with a fresh prefix table!
1032
setPrefixTable(null);
1034
// If we have declared declarations, then we look for
1035
// a parent that has namespace decls, and add them
1036
// to this element's decls. Otherwise we just point
1037
// to the parent that has decls.
1038
if (null != this.m_declaredPrefixes)
1040
StylesheetRoot stylesheet = this.getStylesheetRoot();
1042
// Add this element's declared prefixes to the
1044
int n = m_declaredPrefixes.size();
1046
for (int i = 0; i < n; i++)
1048
XMLNSDecl decl = (XMLNSDecl) m_declaredPrefixes.get(i);
1049
String prefix = decl.getPrefix();
1050
String uri = decl.getURI();
1053
boolean shouldExclude = excludeResultNSDecl(prefix, uri);
1055
// Create a new prefix table if one has not already been created.
1056
if (null == m_prefixTable)
1057
setPrefixTable(new ArrayList());
1059
NamespaceAlias nsAlias = stylesheet.getNamespaceAliasComposed(uri);
1062
// Should I leave the non-aliased element in the table as
1063
// an excluded element?
1065
// The exclusion should apply to the non-aliased prefix, so
1066
// we don't calculate it here. -sb
1067
// Use stylesheet prefix, as per xsl WG
1068
decl = new XMLNSDecl(nsAlias.getStylesheetPrefix(),
1069
nsAlias.getResultNamespace(), shouldExclude);
1072
decl = new XMLNSDecl(prefix, uri, shouldExclude);
1074
m_prefixTable.add(decl);
1079
ElemTemplateElement parent = this.getParentNodeElem();
1084
// The prefix table of the parent should never be null!
1085
List prefixes = parent.m_prefixTable;
1087
if (null == m_prefixTable && !needToCheckExclude())
1090
// Nothing to combine, so just use parent's table!
1091
setPrefixTable(parent.m_prefixTable);
1096
// Add the prefixes from the parent's prefix table.
1097
int n = prefixes.size();
1099
for (int i = 0; i < n; i++)
1101
XMLNSDecl decl = (XMLNSDecl) prefixes.get(i);
1102
boolean shouldExclude = excludeResultNSDecl(decl.getPrefix(),
1105
if (shouldExclude != decl.getIsExcluded())
1107
decl = new XMLNSDecl(decl.getPrefix(), decl.getURI(),
1111
//m_prefixTable.addElement(decl);
1112
addOrReplaceDecls(decl);
1116
else if (null == m_prefixTable)
1119
// Must be stylesheet element without any result prefixes!
1120
setPrefixTable(new ArrayList());
1125
* Add or replace this namespace declaration in list
1126
* of namespaces in scope for this element.
1128
* @param newDecl namespace declaration to add to list
1130
void addOrReplaceDecls(XMLNSDecl newDecl)
1132
int n = m_prefixTable.size();
1134
for (int i = n - 1; i >= 0; i--)
1136
XMLNSDecl decl = (XMLNSDecl) m_prefixTable.get(i);
1138
if (decl.getPrefix().equals(newDecl.getPrefix()))
1143
m_prefixTable.add(newDecl);
1148
* Return whether we need to check namespace prefixes
1149
* against and exclude result prefixes list.
1151
boolean needToCheckExclude()
1157
* Send startPrefixMapping events to the result tree handler
1158
* for all declared prefix mappings in the stylesheet.
1160
* @param transformer non-null reference to the the current transform-time state.
1162
* @throws TransformerException
1164
void executeNSDecls(TransformerImpl transformer) throws TransformerException
1166
executeNSDecls(transformer, null);
1170
* Send startPrefixMapping events to the result tree handler
1171
* for all declared prefix mappings in the stylesheet.
1173
* @param transformer non-null reference to the the current transform-time state.
1174
* @param ignorePrefix string prefix to not startPrefixMapping
1176
* @throws TransformerException
1178
void executeNSDecls(TransformerImpl transformer, String ignorePrefix) throws TransformerException
1182
if (null != m_prefixTable)
1184
SerializationHandler rhandler = transformer.getResultTreeHandler();
1185
int n = m_prefixTable.size();
1187
for (int i = n - 1; i >= 0; i--)
1189
XMLNSDecl decl = (XMLNSDecl) m_prefixTable.get(i);
1191
if (!decl.getIsExcluded() && !(null != ignorePrefix && decl.getPrefix().equals(ignorePrefix)))
1193
rhandler.startPrefixMapping(decl.getPrefix(), decl.getURI(), true);
1198
catch(org.xml.sax.SAXException se)
1200
throw new TransformerException(se);
1205
* Send endPrefixMapping events to the result tree handler
1206
* for all declared prefix mappings in the stylesheet.
1208
* @param transformer non-null reference to the the current transform-time state.
1210
* @throws TransformerException
1212
void unexecuteNSDecls(TransformerImpl transformer) throws TransformerException
1214
unexecuteNSDecls(transformer, null);
1218
* Send endPrefixMapping events to the result tree handler
1219
* for all declared prefix mappings in the stylesheet.
1221
* @param transformer non-null reference to the the current transform-time state.
1222
* @param ignorePrefix string prefix to not endPrefixMapping
1224
* @throws TransformerException
1226
void unexecuteNSDecls(TransformerImpl transformer, String ignorePrefix) throws TransformerException
1231
if (null != m_prefixTable)
1233
SerializationHandler rhandler = transformer.getResultTreeHandler();
1234
int n = m_prefixTable.size();
1236
for (int i = 0; i < n; i++)
1238
XMLNSDecl decl = (XMLNSDecl) m_prefixTable.get(i);
1240
if (!decl.getIsExcluded() && !(null != ignorePrefix && decl.getPrefix().equals(ignorePrefix)))
1242
rhandler.endPrefixMapping(decl.getPrefix());
1247
catch(org.xml.sax.SAXException se)
1249
throw new TransformerException(se);
1253
/** The *relative* document order number of this element.
1255
protected int m_docOrderNumber = -1;
1258
* Set the UID (document order index).
1260
* @param i Index of this child.
1262
public void setUid(int i)
1264
m_docOrderNumber = i;
1268
* Get the UID (document order index).
1270
* @return Index of this child
1274
return m_docOrderNumber;
1282
protected ElemTemplateElement m_parentNode;
1285
* Get the parent as a Node.
1287
* @return This node's parent node
1289
public Node getParentNode()
1291
return m_parentNode;
1295
* Get the parent as an ElemTemplateElement.
1297
* @return This node's parent as an ElemTemplateElement
1299
public ElemTemplateElement getParentElem()
1301
return m_parentNode;
1305
* Set the parent as an ElemTemplateElement.
1307
* @param p This node's parent as an ElemTemplateElement
1309
public void setParentElem(ElemTemplateElement p)
1318
ElemTemplateElement m_nextSibling;
1321
* Get the next sibling (as a Node) or return null.
1323
* @return this node's next sibling or null
1325
public Node getNextSibling()
1327
return m_nextSibling;
1331
* Get the previous sibling (as a Node) or return null.
1332
* Note that this may be expensive if the parent has many kids;
1333
* we accept that price in exchange for avoiding the prev pointer
1334
* TODO: If we were sure parents and sibs are always ElemTemplateElements,
1335
* we could hit the fields directly rather than thru accessors.
1337
* @return This node's previous sibling or null
1339
public Node getPreviousSibling()
1342
Node walker = getParentNode(), prev = null;
1345
for (walker = walker.getFirstChild(); walker != null;
1346
prev = walker, walker = walker.getNextSibling())
1356
* Get the previous sibling (as a Node) or return null.
1357
* Note that this may be expensive if the parent has many kids;
1358
* we accept that price in exchange for avoiding the prev pointer
1359
* TODO: If we were sure parents and sibs are always ElemTemplateElements,
1360
* we could hit the fields directly rather than thru accessors.
1362
* @return This node's previous sibling or null
1364
public ElemTemplateElement getPreviousSiblingElem()
1367
ElemTemplateElement walker = getParentNodeElem();
1368
ElemTemplateElement prev = null;
1371
for (walker = walker.getFirstChildElem(); walker != null;
1372
prev = walker, walker = walker.getNextSiblingElem())
1383
* Get the next sibling (as a ElemTemplateElement) or return null.
1385
* @return This node's next sibling (as a ElemTemplateElement) or null
1387
public ElemTemplateElement getNextSiblingElem()
1389
return m_nextSibling;
1393
* Get the parent element.
1395
* @return This node's next parent (as a ElemTemplateElement) or null
1397
public ElemTemplateElement getParentNodeElem()
1399
return m_parentNode;
1407
ElemTemplateElement m_firstChild;
1410
* Get the first child as a Node.
1412
* @return This node's first child or null
1414
public Node getFirstChild()
1416
return m_firstChild;
1420
* Get the first child as a ElemTemplateElement.
1422
* @return This node's first child (as a ElemTemplateElement) or null
1424
public ElemTemplateElement getFirstChildElem()
1426
return m_firstChild;
1430
* Get the last child.
1432
* @return This node's last child
1434
public Node getLastChild()
1437
ElemTemplateElement lastChild = null;
1439
for (ElemTemplateElement node = m_firstChild; node != null;
1440
node = node.m_nextSibling)
1449
* Get the last child.
1451
* @return This node's last child
1453
public ElemTemplateElement getLastChildElem()
1456
ElemTemplateElement lastChild = null;
1458
for (ElemTemplateElement node = m_firstChild; node != null;
1459
node = node.m_nextSibling)
1468
/** DOM backpointer that this element originated from. */
1469
transient private org.w3c.dom.Node m_DOMBackPointer;
1472
* If this stylesheet was created from a DOM, get the
1473
* DOM backpointer that this element originated from.
1476
* @return DOM backpointer that this element originated from or null.
1478
public org.w3c.dom.Node getDOMBackPointer()
1480
return m_DOMBackPointer;
1484
* If this stylesheet was created from a DOM, set the
1485
* DOM backpointer that this element originated from.
1488
* @param n DOM backpointer that this element originated from.
1490
public void setDOMBackPointer(org.w3c.dom.Node n)
1492
m_DOMBackPointer = n;
1496
* Compares this object with the specified object for precedence order.
1497
* The order is determined by the getImportCountComposed() of the containing
1498
* composed stylesheet and the getUid() of this element.
1499
* Returns a negative integer, zero, or a positive integer as this
1500
* object is less than, equal to, or greater than the specified object.
1502
* @param o The object to be compared to this object
1503
* @return a negative integer, zero, or a positive integer as this object is
1504
* less than, equal to, or greater than the specified object.
1505
* @throws ClassCastException if the specified object's
1506
* type prevents it from being compared to this Object.
1508
public int compareTo(Object o) throws ClassCastException {
1510
ElemTemplateElement ro = (ElemTemplateElement) o;
1511
int roPrecedence = ro.getStylesheetComposed().getImportCountComposed();
1512
int myPrecedence = this.getStylesheetComposed().getImportCountComposed();
1514
if (myPrecedence < roPrecedence)
1516
else if (myPrecedence > roPrecedence)
1519
return this.getUid() - ro.getUid();
1523
* Get information about whether or not an element should strip whitespace.
1524
* @see <a href="http://www.w3.org/TR/xslt#strip">strip in XSLT Specification</a>
1526
* @param support The XPath runtime state.
1527
* @param targetElement Element to check
1529
* @return true if the whitespace should be stripped.
1531
* @throws TransformerException
1533
public boolean shouldStripWhiteSpace(
1534
org.apache.xpath.XPathContext support,
1535
org.w3c.dom.Element targetElement) throws TransformerException
1537
StylesheetRoot sroot = this.getStylesheetRoot();
1538
return (null != sroot) ? sroot.shouldStripWhiteSpace(support, targetElement) :false;
1542
* Get information about whether or not whitespace can be stripped.
1543
* @see <a href="http://www.w3.org/TR/xslt#strip">strip in XSLT Specification</a>
1545
* @return true if the whitespace can be stripped.
1547
public boolean canStripWhiteSpace()
1549
StylesheetRoot sroot = this.getStylesheetRoot();
1550
return (null != sroot) ? sroot.canStripWhiteSpace() : false;
1554
* Tell if this element can accept variable declarations.
1555
* @return true if the element can accept and process variable declarations.
1557
public boolean canAcceptVariables()
1562
//=============== ExpressionNode methods ================
1565
* Set the parent of this node.
1566
* @param n Must be a ElemTemplateElement.
1568
public void exprSetParent(ExpressionNode n)
1570
// This obviously requires that only a ElemTemplateElement can
1571
// parent a node of this type.
1572
setParentElem((ElemTemplateElement)n);
1576
* Get the ExpressionNode parent of this node.
1578
public ExpressionNode exprGetParent()
1580
return getParentElem();
1584
* This method tells the node to add its argument to the node's
1586
* @param n Must be a ElemTemplateElement.
1588
public void exprAddChild(ExpressionNode n, int i)
1590
appendChild((ElemTemplateElement)n);
1593
/** This method returns a child node. The children are numbered
1594
from zero, left to right. */
1595
public ExpressionNode exprGetChild(int i)
1597
return (ExpressionNode)item(i);
1600
/** Return the number of children the node has. */
1601
public int exprGetNumChildren()
1607
* Accept a visitor and call the appropriate method
1610
* @param visitor The visitor whose appropriate method will be called.
1611
* @return true if the children of the object should be visited.
1613
protected boolean accept(XSLTVisitor visitor)
1615
return visitor.visitInstruction(this);
1619
* @see XSLTVisitable#callVisitors(XSLTVisitor)
1621
public void callVisitors(XSLTVisitor visitor)
1625
callChildVisitors(visitor);
1630
* Call the children visitors.
1631
* @param visitor The visitor whose appropriate method will be called.
1633
protected void callChildVisitors(XSLTVisitor visitor, boolean callAttributes)
1635
for (ElemTemplateElement node = m_firstChild;
1637
node = node.m_nextSibling)
1639
node.callVisitors(visitor);
1644
* Call the children visitors.
1645
* @param visitor The visitor whose appropriate method will be called.
1647
protected void callChildVisitors(XSLTVisitor visitor)
1649
callChildVisitors(visitor, true);
1654
* @see PrefixResolver#handlesNullPrefixes()
1656
public boolean handlesNullPrefixes() {