/* -*- 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): * Blake Ross (blake@blakeross.com) * * 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 _MORKTABLEROWCURSOR_ #define _MORKTABLEROWCURSOR_ 1 #ifndef _MORK_ #include "mork.h" #endif #ifndef _MORKCURSOR_ #include "morkCursor.h" #endif #ifndef _MORKMAP_ #include "morkMap.h" #endif //3456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789 class orkinTableRowCursor; #define morkDerived_kTableRowCursor /*i*/ 0x7243 /* ascii 'rC' */ class morkTableRowCursor : public morkCursor, public nsIMdbTableRowCursor { // row iterator // public: // slots inherited from morkObject (meant to inform only) // nsIMdbHeap* mNode_Heap; // mork_able mNode_Mutable; // can this node be modified? // mork_load mNode_Load; // is this node clean or dirty? // mork_base mNode_Base; // must equal morkBase_kNode // mork_derived mNode_Derived; // depends on specific node subclass // mork_access mNode_Access; // kOpen, kClosing, kShut, or kDead // mork_usage mNode_Usage; // kHeap, kStack, kMember, kGlobal, kNone // mork_uses mNode_Uses; // refcount for strong refs // mork_refs mNode_Refs; // refcount for strong refs + weak refs // morkFactory* mObject_Factory; // weak ref to suite factory // mork_seed mCursor_Seed; // mork_pos mCursor_Pos; // mork_bool mCursor_DoFailOnSeedOutOfSync; // mork_u1 mCursor_Pad[ 3 ]; // explicitly pad to u4 alignment public: // state is public because the entire Mork system is private morkTable* mTableRowCursor_Table; // weak ref to table // { ===== begin morkNode interface ===== public: // morkNode virtual methods virtual void CloseMorkNode(morkEnv* ev); // CloseTableRowCursor() virtual ~morkTableRowCursor(); // assert that close executed earlier public: // morkTableRowCursor construction & destruction morkTableRowCursor(morkEnv* ev, const morkUsage& inUsage, nsIMdbHeap* ioHeap, morkTable* ioTable, mork_pos inRowPos); void CloseTableRowCursor(morkEnv* ev); // called by CloseMorkNode(); private: // copying is not allowed morkTableRowCursor(const morkTableRowCursor& other); morkTableRowCursor& operator=(const morkTableRowCursor& other); public: NS_DECL_ISUPPORTS_INHERITED // { ----- begin attribute methods ----- NS_IMETHOD GetCount(nsIMdbEnv* ev, mdb_count* outCount); // readonly NS_IMETHOD GetSeed(nsIMdbEnv* ev, mdb_seed* outSeed); // readonly NS_IMETHOD SetPos(nsIMdbEnv* ev, mdb_pos inPos); // mutable NS_IMETHOD GetPos(nsIMdbEnv* ev, mdb_pos* outPos); NS_IMETHOD SetDoFailOnSeedOutOfSync(nsIMdbEnv* ev, mdb_bool inFail); NS_IMETHOD GetDoFailOnSeedOutOfSync(nsIMdbEnv* ev, mdb_bool* outFail); // } ----- end attribute methods ----- NS_IMETHOD GetTable(nsIMdbEnv* ev, nsIMdbTable** acqTable); // } ----- end attribute methods ----- // { ----- begin duplicate row removal methods ----- NS_IMETHOD CanHaveDupRowMembers(nsIMdbEnv* ev, // cursor might hold dups? mdb_bool* outCanHaveDups); NS_IMETHOD MakeUniqueCursor( // clone cursor, removing duplicate rows nsIMdbEnv* ev, // context nsIMdbTableRowCursor** acqCursor); // acquire clone with no dups // } ----- end duplicate row removal methods ----- // { ----- begin oid iteration methods ----- NS_IMETHOD NextRowOid( // get row id of next row in the table nsIMdbEnv* ev, // context mdbOid* outOid, // out row oid mdb_pos* outRowPos); // zero-based position of the row in table NS_IMETHOD PrevRowOid( // get row id of previous row in the table nsIMdbEnv* ev, // context mdbOid* outOid, // out row oid mdb_pos* outRowPos); // zero-based position of the row in table // } ----- end oid iteration methods ----- // { ----- begin row iteration methods ----- NS_IMETHOD NextRow( // get row cells from table for cells already in row nsIMdbEnv* ev, // context nsIMdbRow** acqRow, // acquire next row in table mdb_pos* outRowPos); // zero-based position of the row in table NS_IMETHOD PrevRow( // get row cells from table for cells already in row nsIMdbEnv* ev, // context nsIMdbRow** acqRow, // acquire previous row in table mdb_pos* outRowPos); // zero-based position of the row in table // } ----- end row iteration methods ----- public: // dynamic type identification mork_bool IsTableRowCursor() const { return IsNode() && mNode_Derived == morkDerived_kTableRowCursor; } // } ===== end morkNode methods ===== public: // typing static void NonTableRowCursorTypeError(morkEnv* ev); public: // oid only iteration mdb_pos NextRowOid(morkEnv* ev, mdbOid* outOid); mdb_pos PrevRowOid(morkEnv* ev, mdbOid* outOid); public: // other table row cursor methods virtual mork_bool CanHaveDupRowMembers(morkEnv* ev); virtual mork_count GetMemberCount(morkEnv* ev); virtual morkRow* NextRow(morkEnv* ev, mdbOid* outOid, mdb_pos* outPos); virtual morkRow* PrevRow(morkEnv* ev, mdbOid* outOid, mdb_pos* outPos); public: // typesafe refcounting inlines calling inherited morkNode methods static void SlotWeakTableRowCursor(morkTableRowCursor* me, morkEnv* ev, morkTableRowCursor** ioSlot) { morkNode::SlotWeakNode((morkNode*) me, ev, (morkNode**) ioSlot); } static void SlotStrongTableRowCursor(morkTableRowCursor* me, morkEnv* ev, morkTableRowCursor** ioSlot) { morkNode::SlotStrongNode((morkNode*) me, ev, (morkNode**) ioSlot); } }; //3456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789 #endif /* _MORKTABLEROWCURSOR_ */