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//
// MQResultSetDataSource.m
// MySQL QueryBrowser
//
// Created by Alfredo Kojima on 3/6/05.
// Copyright 2005 MySQL AB. All rights reserved.
//
#import "MQResultSetDataSource.h"
#include "MYXResultSet.h"
@implementation MQResultSetDataSource
static MYXResultSetCallbacks callbacks= {
NULL,
NULL,
NULL
};
- (id)initWithResultSet:(MYX_RESULTSET*)rs lock: (NSLock *)lock
{
self= [super init];
if (self)
{
_resultSet= new MYXResultSet(rs, callbacks);
_zone= NSCreateZone(256*1024, 64*1024, NO);
_lock= lock;
}
return self;
}
- (MYX_RESULTSET*)resultset
{
return _resultSet->get_resultset();
}
- (MYXResultSet*)myxResultSet
{
return _resultSet;
}
- (void)dealloc
{
NSRecycleZone(_zone);
delete _resultSet;
[super dealloc];
}
- (int)numberOfRowsInTableView:(NSTableView *)aTableView
{
return _resultSet->get_row_count();
}
- (id)tableView:(NSTableView *)aTableView
objectValueForTableColumn:(NSTableColumn *)aTableColumn
row:(int)rowIndex
{
int column= [[aTableColumn identifier] intValue];
char *value;
size_t length;
if(_lock)
[_lock lock];
bool b= _resultSet->get(rowIndex, column, value, length);
if(_lock)
[_lock unlock];
if (b)
{
if (_resultSet->get_column_type(column) == MYX_RSCT_BLOB)
return @"";
else
return [[NSString allocWithZone:_zone] initWithBytesNoCopy:value
length:length
encoding:NSUTF8StringEncoding
freeWhenDone:NO];
}
else
return nil;
}
- (void)tableView:(NSTableView *)aTableView
setObjectValue:(id)anObject
forTableColumn:(NSTableColumn *)aTableColumn
row:(int)rowIndex
{
int column= [[aTableColumn identifier] intValue];
//id ovalue= [self tableView:aTableView
// objectValueForTableColumn:aTableColumn
// row:rowIndex];
unsigned int nr;
// this optimization had problmes when changing
// string value from NULL to empty string
// if you really need it make sure NULL-to-empty works as well
// if (ovalue && [ovalue isEqualTo:anObject])
// return;
nr= _resultSet->get_row_count();
if ([anObject isKindOfClass:[NSString class]])
{
const char *data= (const char*)[anObject UTF8String];
_resultSet->set(rowIndex, column, data, strlen(data));
}
else if(anObject)
{
_resultSet->set(rowIndex, column, (const char*)[anObject bytes], [anObject length]);
}
else
{
_resultSet->set(rowIndex, column, NULL, sizeof(const char *));
}
if (_resultSet->get_row_count() != nr)
[aTableView noteNumberOfRowsChanged];
}
- (void)addRow
{
_resultSet->add_row();
}
- (void)deleteRow:(int)rowIndex
{
_resultSet->delete_row(rowIndex);
}
- (BOOL)isEditable
{
return _resultSet->get_resultset()->editable;
}
- (BOOL)editing
{
return _editEnabled;
}
- (BOOL)hasChanges
{
return _resultSet->has_changes();
}
- (void)setEditing:(BOOL)flag
{
_resultSet->set_placeholder_enabled(flag);
_editEnabled= flag;
}
- (MYXRSEditStatus)statusOfRow:(int)row
column:(int)column
{
return _resultSet->get_edit_status(row, column);
}
- (MYXRSCompareStatus)compareStatusOfRow:(int)row
column:(int)column
{
if(_lock)
[_lock lock];
MYXRSCompareStatus status= _resultSet->get_compare_status(row, column);
if(_lock)
[_lock unlock];
return status;
}
- (void)preCommit
{
_resultSet->pre_commit();
}
- (void)postCommit:(BOOL)failed
{
_resultSet->post_commit(failed);
}
- (void)discardChanges
{
_resultSet->discard_changes();
}
@end
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