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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;
35 AbstractDOMCachingXMLObject::~AbstractDOMCachingXMLObject()
38 m_document->release();
41 void AbstractDOMCachingXMLObject::setDOM(DOMElement* dom, bool bindDocument) const
46 setDocument(dom->getOwnerDocument());
51 void AbstractDOMCachingXMLObject::releaseDOM() const
54 if (m_log.isDebugEnabled()) {
55 string qname=getElementQName().toString();
56 m_log.debug("releasing cached DOM representation for (%s)", qname.empty() ? "unknown" : qname.c_str());
62 void AbstractDOMCachingXMLObject::releaseParentDOM(bool propagateRelease) const
64 if (getParent() && getParent()->getDOM()) {
66 "releasing cached DOM representation for parent object with propagation set to %s",
67 propagateRelease ? "true" : "false"
69 getParent()->releaseDOM();
71 getParent()->releaseParentDOM(propagateRelease);
75 class _release : public binary_function<XMLObject*,bool,void> {
77 void operator()(XMLObject* obj, bool propagate) const {
81 obj->releaseChildrenDOM(propagate);
86 void AbstractDOMCachingXMLObject::releaseChildrenDOM(bool propagateRelease) const
90 "releasing cached DOM representation for children with propagation set to %s",
91 propagateRelease ? "true" : "false"
93 const list<XMLObject*>& children=getOrderedChildren();
94 for_each(children.begin(),children.end(),bind2nd(_release(),propagateRelease));
98 DOMElement* AbstractDOMCachingXMLObject::cloneDOM(DOMDocument* doc) const
102 doc=DOMImplementationRegistry::getDOMImplementation(NULL)->createDocument();
103 return static_cast<DOMElement*>(doc->importNode(getDOM(),true));
108 XMLObject* AbstractDOMCachingXMLObject::clone() const
110 // See if we can clone via the DOM.
111 DOMElement* domCopy=cloneDOM();
113 // Seemed to work, so now we unmarshall the DOM to produce the clone.
114 const XMLObjectBuilder* b=XMLObjectBuilder::getBuilder(domCopy);
116 auto_ptr<QName> q(XMLHelper::getNodeQName(domCopy));
118 "DOM clone failed, unable to locate builder for element (%s)", q->toString().c_str()
120 domCopy->getOwnerDocument()->release();
121 throw UnmarshallingException("Unable to locate builder for cloned element.");
123 XercesJanitor<DOMDocument> janitor(domCopy->getOwnerDocument());
124 XMLObject* ret = b->buildFromElement(domCopy,true); // bind document
125 janitor.release(); // safely transferred
131 void AbstractDOMCachingXMLObject::detach()
133 // This is an override that duplicates some of the checking in the base class but
134 // adds document management in preparation for deletion of the parent.
139 if (getParent()->hasParent())
140 throw XMLObjectException("Cannot detach an object whose parent is itself a child.");
142 AbstractDOMCachingXMLObject* parent = dynamic_cast<AbstractDOMCachingXMLObject*>(getParent());
143 if (parent && parent->m_document) {
144 // Transfer control of document to me...
145 setDocument(parent->m_document);
146 parent->m_document = NULL;
148 // The rest is done by the base.
149 AbstractXMLObject::detach();