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4 * Licensed under the Apache License, Version 2.0 (the "License");
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13 * See the License for the specific language governing permissions and
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18 * AbstractDOMCachingXMLObject.cpp
20 * Extension of AbstractXMLObject that implements a DOMCachingXMLObject.
24 #include "AbstractDOMCachingXMLObject.h"
25 #include "exceptions.h"
26 #include "XMLObjectBuilder.h"
27 #include "util/XMLHelper.h"
32 using namespace xmltooling;
33 using namespace xercesc;
36 AbstractDOMCachingXMLObject::~AbstractDOMCachingXMLObject()
39 m_document->release();
42 void AbstractDOMCachingXMLObject::setDOM(DOMElement* dom, bool bindDocument) const
47 setDocument(dom->getOwnerDocument());
52 void AbstractDOMCachingXMLObject::releaseDOM() const
55 if (m_log.isDebugEnabled()) {
56 string qname=getElementQName().toString();
57 m_log.debug("releasing cached DOM representation for (%s)", qname.empty() ? "unknown" : qname.c_str());
63 void AbstractDOMCachingXMLObject::releaseParentDOM(bool propagateRelease) const
65 if (getParent() && getParent()->getDOM()) {
67 "releasing cached DOM representation for parent object with propagation set to %s",
68 propagateRelease ? "true" : "false"
70 getParent()->releaseDOM();
72 getParent()->releaseParentDOM(propagateRelease);
76 class _release : public binary_function<XMLObject*,bool,void> {
78 void operator()(XMLObject* obj, bool propagate) const {
82 obj->releaseChildrenDOM(propagate);
87 void AbstractDOMCachingXMLObject::releaseChildrenDOM(bool propagateRelease) const
91 "releasing cached DOM representation for children with propagation set to %s",
92 propagateRelease ? "true" : "false"
94 const list<XMLObject*>& children=getOrderedChildren();
95 for_each(children.begin(),children.end(),bind2nd(_release(),propagateRelease));
99 DOMElement* AbstractDOMCachingXMLObject::cloneDOM(DOMDocument* doc) const
103 doc=DOMImplementationRegistry::getDOMImplementation(NULL)->createDocument();
104 return static_cast<DOMElement*>(doc->importNode(getDOM(),true));
109 XMLObject* AbstractDOMCachingXMLObject::clone() const
111 // See if we can clone via the DOM.
112 DOMElement* domCopy=cloneDOM();
114 // Seemed to work, so now we unmarshall the DOM to produce the clone.
115 const XMLObjectBuilder* b=XMLObjectBuilder::getBuilder(domCopy);
117 auto_ptr<QName> q(XMLHelper::getNodeQName(domCopy));
119 "DOM clone failed, unable to locate builder for element (%s)", q->toString().c_str()
121 domCopy->getOwnerDocument()->release();
122 throw UnmarshallingException("Unable to locate builder for cloned element.");
124 XercesJanitor<DOMDocument> janitor(domCopy->getOwnerDocument());
125 XMLObject* ret = b->buildFromElement(domCopy,true); // bind document
126 janitor.release(); // safely transferred
132 void AbstractDOMCachingXMLObject::detach()
134 // This is an override that duplicates some of the checking in the base class but
135 // adds document management in preparation for deletion of the parent.
140 if (getParent()->hasParent())
141 throw XMLObjectException("Cannot detach an object whose parent is itself a child.");
143 AbstractDOMCachingXMLObject* parent = dynamic_cast<AbstractDOMCachingXMLObject*>(getParent());
144 if (parent && parent->m_document) {
145 // Transfer control of document to me...
146 setDocument(parent->m_document);
147 parent->m_document = NULL;
149 // The rest is done by the base.
150 AbstractXMLObject::detach();