pjs/rdf/base/src/nsRDFXMLSerializer.h

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (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 mozilla.org Code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1999
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Chris Waterson <waterson@netscape.com>
* Axel Hecht <axel@pike.org>
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef nsRDFXMLSerializer_h__
#define nsRDFXMLSerializer_h__
#include "nsIRDFLiteral.h"
#include "nsIRDFXMLSerializer.h"
#include "nsIRDFXMLSource.h"
#include "nsNameSpaceMap.h"
#include "nsXPIDLString.h"
#include "nsDataHashtable.h"
#include "rdfITripleVisitor.h"
class nsString;
class nsIOutputStream;
class nsIRDFContainerUtils;
/**
* A helper class that can serialize RDF/XML from a
* datasource. Implements both nsIRDFXMLSerializer and
* nsIRDFXMLSource.
*/
class nsRDFXMLSerializer : public nsIRDFXMLSerializer,
public nsIRDFXMLSource
{
public:
static nsresult
Create(nsISupports* aOuter, REFNSIID aIID, void** aResult);
NS_DECL_ISUPPORTS
NS_DECL_NSIRDFXMLSERIALIZER
NS_DECL_NSIRDFXMLSOURCE
protected:
nsRDFXMLSerializer();
virtual ~nsRDFXMLSerializer();
// Implementation methods
nsresult
RegisterQName(nsIRDFResource* aResource);
nsresult
GetQName(nsIRDFResource* aResource, nsCString& aQName);
already_AddRefed<nsIAtom>
EnsureNewPrefix();
nsresult
SerializeInlineAssertion(nsIOutputStream* aStream,
nsIRDFResource* aResource,
nsIRDFResource* aProperty,
nsIRDFLiteral* aValue);
nsresult
SerializeChildAssertion(nsIOutputStream* aStream,
nsIRDFResource* aResource,
nsIRDFResource* aProperty,
nsIRDFNode* aValue);
nsresult
SerializeProperty(nsIOutputStream* aStream,
nsIRDFResource* aResource,
nsIRDFResource* aProperty,
PRBool aInline,
PRInt32* aSkipped);
PRBool
IsContainerProperty(nsIRDFResource* aProperty);
nsresult
SerializeDescription(nsIOutputStream* aStream,
nsIRDFResource* aResource);
nsresult
SerializeMember(nsIOutputStream* aStream,
nsIRDFResource* aContainer,
nsIRDFNode* aMember);
nsresult
SerializeContainer(nsIOutputStream* aStream,
nsIRDFResource* aContainer);
nsresult
SerializePrologue(nsIOutputStream* aStream);
nsresult
SerializeEpilogue(nsIOutputStream* aStream);
nsresult
CollectNamespaces();
PRBool
IsA(nsIRDFDataSource* aDataSource, nsIRDFResource* aResource, nsIRDFResource* aType);
nsCOMPtr<nsIRDFDataSource> mDataSource;
nsNameSpaceMap mNameSpaces;
nsXPIDLCString mBaseURLSpec;
// hash mapping resources to utf8-encoded QNames
nsDataHashtable<nsISupportsHashKey, nsCString> mQNames;
friend class QNameCollector;
PRUint32 mPrefixID;
static PRInt32 gRefCnt;
static nsIRDFResource* kRDF_instanceOf;
static nsIRDFResource* kRDF_type;
static nsIRDFResource* kRDF_nextVal;
static nsIRDFResource* kRDF_Bag;
static nsIRDFResource* kRDF_Seq;
static nsIRDFResource* kRDF_Alt;
static nsIRDFContainerUtils* gRDFC;
};
#endif // nsRDFXMLSerializer_h__