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beginnings of rdf mail data source implementation. Not
yet in makefiles
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245
rdf/src/nsMailDataSource.cpp
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245
rdf/src/nsMailDataSource.cpp
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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/*
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Implementation for an mail RDF data store.
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It supports the following kinds of objects.
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- mail message
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- mail folders
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There is a single Mail Data Source Object. When the data source
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is initialized, it reads in the list of accounts and their folders.
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The summary file for a folder is read in on demand (either when the
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folder is asked for its children or when one of the properties of
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a mail message is queried).
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Each mail account, mail folder and message is represented as
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an nsIRDFResource.
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For the sake of compactness, the standard attributes of a mail message,
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account and folder are represented by using a C++ object --- corresponding
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to the message/account/folder. This is in contrast to the default InMemoryDataSource
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which uses a C++ object for each Assertion. The MailDataSource can store information
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about and answer queries pertaining to the standard mail related properties of
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mail objects. Other properties of mail objects and properties about non-mail
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objects which might be in mail folders are taken care off by other data sources
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(such as the default local store).
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There is a hash table (mResourceToMOTable) that keeps the mapping from
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nsIRDFResource(s) to MailObject(s). This is kind of kludgy --- it would
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be nice if MailObject and its subclasses could directly implement nsIRDFResource,
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but given the global namespace requirements for Resources, that causes
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some problems.
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*/
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#include "nscore.h"
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#include "nsIRDFCursor.h"
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#include "nsIRDFDataSource.h"
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#include "nsIRDFNode.h"
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#include "nsIRDFObserver.h"
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#include "nsIServiceManager.h"
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#include "nsVoidArray.h" // XXX introduces dependency on raptorbase
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#include "nsRDFCID.h"
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#include "rdfutil.h"
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#include "plhash.h"
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#include "plstr.h"
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static NS_DEFINE_IID(kIRDFAssertionCursorIID, NS_IRDFASSERTIONCURSOR_IID);
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static NS_DEFINE_IID(kIRDFArcsInCursorIID, NS_IRDFARCSINCURSOR_IID);
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static NS_DEFINE_IID(kIRDFArcsOutCursorIID, NS_IRDFARCSOUTCURSOR_IID);
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static NS_DEFINE_IID(kIRDFCursorIID, NS_IRDFCURSOR_IID);
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static NS_DEFINE_IID(kIRDFDataSourceIID, NS_IRDFDATASOURCE_IID);
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static NS_DEFINE_IID(kIRDFLiteralIID, NS_IRDFLITERAL_IID);
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static NS_DEFINE_IID(kIRDFNodeIID, NS_IRDFNODE_IID);
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static NS_DEFINE_IID(kIRDFResourceIID, NS_IRDFRESOURCE_IID);
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static NS_DEFINE_IID(kISupportsIID, NS_ISUPPORTS_IID);
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class MailObject;
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class MailMessage;
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class MailFolder;
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class MailAccount;
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enum MACType {
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POP,
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IMAP
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};
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enum MOType {
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FOLDER,
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ACCOUNT,
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MESSAGE
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}
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class MailObject
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{
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public:
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MOTYPE mType;
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nsIRDFResource* mResource;
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}
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class MailAccount : MailObject
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{
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public:
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nsVoidArray* mFolders;
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char* mUserName;
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char* mServer;
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MACType mAccountType;
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}
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class MailFolder : MailObject
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{
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public:
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nsVoidArray* mMessages;
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char* mPathname;
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MailAccount* mAccount;
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PRBool mReadInp;
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}
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class MailMessage : MailObject
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{
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public:
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nsIRDFResource* mFrom;
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nsVoidArray* mTo;
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nsIRDFLiteral* mSubject;
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int mDate;
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int mSize;
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char mFlags[8];
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size_t mSummaryFileOffset;
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size_t mBerkeleyFileOffset;
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MailFolder* mFolder;
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char* mMessageID;
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}
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class MailDataSource : public nsIRDFDataSource
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{
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protected:
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char* mURL;
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PLHashTable* mResourceToMOTable;
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nsVoidArray* mObservers;
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nsVoidArray* mAccounts;
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public:
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MailDataSource(void);
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virtual ~MailDataSource(void);
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// nsISupports
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NS_DECL_ISUPPORTS
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// nsIRDFDataSource methods
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NS_IMETHOD Init(const char* uri);
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NS_IMETHOD GetSource(nsIRDFResource* property,
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nsIRDFNode* target,
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PRBool tv,
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nsIRDFResource** source);
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NS_IMETHOD GetSources(nsIRDFResource* property,
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nsIRDFNode* target,
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PRBool tv,
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nsIRDFAssertionCursor** sources);
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NS_IMETHOD GetTarget(nsIRDFResource* source,
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nsIRDFResource* property,
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PRBool tv,
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nsIRDFNode** target);
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NS_IMETHOD GetTargets(nsIRDFResource* source,
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nsIRDFResource* property,
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PRBool tv,
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nsIRDFAssertionCursor** targets);
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NS_IMETHOD Assert(nsIRDFResource* source,
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nsIRDFResource* property,
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nsIRDFNode* target,
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PRBool tv);
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NS_IMETHOD Unassert(nsIRDFResource* source,
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nsIRDFResource* property,
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nsIRDFNode* target);
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NS_IMETHOD HasAssertion(nsIRDFResource* source,
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nsIRDFResource* property,
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nsIRDFNode* target,
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PRBool tv,
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PRBool* hasAssertion);
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NS_IMETHOD AddObserver(nsIRDFObserver* n);
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NS_IMETHOD RemoveObserver(nsIRDFObserver* n);
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NS_IMETHOD ArcLabelsIn(nsIRDFNode* node,
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nsIRDFArcsInCursor** labels);
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NS_IMETHOD ArcLabelsOut(nsIRDFResource* source,
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nsIRDFArcsOutCursor** labels);
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NS_IMETHOD Flush();
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// Implemenatation methods
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MailObject* getResourceMailObject (nsIRDFResource* node);
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nsresult setResourceMailObject (nsIRDFResource* node, MailObject* mo);
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};
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NS_IMPL_ISUPPORTS(MailDataSource, kIRDFDataSourceIID);
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InMemoryDataSource::InMemoryDataSource(void)
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: mURL(nsnull),
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mResourceToMOTable(nsnull),
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mObservers(nsnull),
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mAccounts(nsnull)
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{
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mResourceToMOTable = PL_NewHashTable(500,
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rdf_HashPointer,
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PL_CompareValues,
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PL_CompareValues,
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nsnull,
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nsnull);
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getAccounts();
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}
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InMemoryDataSource::~InMemoryDataSource(void)
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{
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if (mResourceToMOTable) {
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PL_HashTableDestroy(mResourceToMOTable);
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mResourceToMOTable = nsnull;
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}
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if (mObservers) {
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for (PRInt32 i = mObservers->Count(); i >= 0; --i) {
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nsIRDFObserver* obs = (nsIRDFObserver*) mObservers->ElementAt(i);
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NS_RELEASE(obs);
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}
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delete mObservers;
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}
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}
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