#include <mk4.h>
Public Member Functions | |
| c4_Sequence () | |
| Abstract constructor. | |
| virtual int | Compare (int, c4_Cursor) const |
| Compare the specified row with another one. | |
| virtual bool | RestrictSearch (c4_Cursor, int &, int &) |
| Restrict the search range for rows. | |
| void | SetAt (int, c4_Cursor) |
| Replace the contents of a specified row. | |
| virtual int | RemapIndex (int, const c4_Sequence *) const |
| Remap the index to an underlying view. | |
| void | IncRef () |
| Increment the reference count of this sequence. | |
| void | DecRef () |
| Decrement the reference count, delete objects when last. | |
| int | NumRefs () const |
| Return the current reference count. | |
| virtual int | NumRows () const =0 |
| Return the current number of rows. | |
| void | Resize (int, int=-1) |
| Change number of rows, either by inserting or removing them. | |
| virtual void | InsertAt (int, c4_Cursor, int=1) |
| Insert one or more rows into this sequence. | |
| virtual void | RemoveAt (int, int=1) |
| Remove one or more rows from this sequence. | |
| virtual void | Move (int, int) |
| Move a row to another position. | |
| int | NthPropId (int) const |
| Return the id of the N-th property. | |
| int | PropIndex (int) |
| Find the index of a property by its id. | |
| int | PropIndex (const c4_Property &) |
| Find the index of a property, or create a new entry. | |
| virtual int | NumHandlers () const =0 |
| Return the number of data handlers in this sequence. | |
| virtual c4_Handler & | NthHandler (int) const =0 |
| Return a reference to the N-th handler in this sequence. | |
| virtual const c4_Sequence * | HandlerContext (int) const =0 |
| Return the context of the N-th handler in this sequence. | |
| virtual int | AddHandler (c4_Handler *)=0 |
| Add the specified data handler to this sequence. | |
| virtual c4_Handler * | CreateHandler (const c4_Property &)=0 |
| Create a handler of the appropriate type. | |
| virtual int | ItemSize (int, int) |
| Return width of specified data item. | |
| virtual bool | Get (int, int, c4_Bytes &) |
| Retrieve one data item from this sequence. | |
| virtual void | Set (int, const c4_Property &, const c4_Bytes &) |
| Store a data item into this sequence. | |
| void | Attach (c4_Sequence *) |
| Register a sequence to receive change notifications. | |
| void | Detach (c4_Sequence *) |
| Unregister a sequence which received change notifications. | |
| c4_Dependencies * | GetDependencies () const |
| Return a pointer to the dependencies, or null. | |
| virtual c4_Notifier * | PreChange (c4_Notifier &) |
| Called just before a change is made to the sequence. | |
| virtual void | PostChange (c4_Notifier &) |
| Called after changes have been made to the sequence. | |
| virtual void | SetNumRows (int)=0 |
| for c4_Table::Sequence setup | |
| c4_Bytes & | Buffer () |
| Gives access to a general purpose temporary buffer. | |
Protected Attributes | |
| int | _propertyLimit |
| Optimization: cached property index. | |
| short * | _propertyMap |
| Optimization: property map for faster access. | |
| c4_Bytes * | _tempBuf |
| allocated on first use by c4_Sequence::Buffer() | |
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Move a row to another position. careful, this does no index remapping, wrong for derived seq's |
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Find the index of a property by its id. CACHING NOTE: derived views will fail if underlying view is restructured |
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Remove one or more rows from this sequence. careful, this does no index remapping, wrong for derived seq's |