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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef _MORKTABLEROWCURSOR_
#define _MORKTABLEROWCURSOR_ 1
#ifndef _MORK_
# include "mork.h"
#endif
#ifndef _MORKCURSOR_
# include "morkCursor.h"
#endif
#ifndef _MORKMAP_
# include "morkMap.h"
#endif
// 456789_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) override; // CloseTableRowCursor()
protected:
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) override; // readonly
NS_IMETHOD GetSeed(nsIMdbEnv* ev, mdb_seed* outSeed) override; // readonly
NS_IMETHOD SetPos(nsIMdbEnv* ev, mdb_pos inPos) override; // mutable
NS_IMETHOD GetPos(nsIMdbEnv* ev, mdb_pos* outPos) override;
NS_IMETHOD SetDoFailOnSeedOutOfSync(nsIMdbEnv* ev, mdb_bool inFail) override;
NS_IMETHOD GetDoFailOnSeedOutOfSync(nsIMdbEnv* ev,
mdb_bool* outFail) override;
// } ----- end attribute methods -----
NS_IMETHOD GetTable(nsIMdbEnv* ev, nsIMdbTable** acqTable) override;
// } ----- end attribute methods -----
// { ----- begin duplicate row removal methods -----
NS_IMETHOD CanHaveDupRowMembers(nsIMdbEnv* ev, // cursor might hold dups?
mdb_bool* outCanHaveDups) override;
NS_IMETHOD MakeUniqueCursor( // clone cursor, removing duplicate rows
nsIMdbEnv* ev, // context
nsIMdbTableRowCursor** acqCursor) override; // 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) override; // 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) override; // 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) override; // 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) override; // 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);
}
};
// 456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789
#endif /* _MORKTABLEROWCURSOR_ */
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