ObjPgSQL  Check-in [2da674855b]

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Comment:Implement fast enumeration.
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SHA3-256: 2da674855b3d179b7524f02132638c404a62952fce04cc7a97907d133939c826
User & Date: js on 2012-10-30 22:33:40
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Context
2013-01-03
19:35
Fix missing dealloc. check-in: 7ee61bb762 user: js tags: trunk
2012-10-30
22:33
Implement fast enumeration. check-in: 2da674855b user: js tags: trunk
17:51
Make use of OF_SENTINEL. check-in: 455ca009cd user: js tags: trunk
Changes
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Modified PGResultRow.m from [d7a041d0e4] to [06d3e5a1c9].

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- (OFEnumerator*)objectEnumerator
{
	return [[[PGResultRowObjectEnumerator alloc]
	    initWithResult: result
		       row: row] autorelease];
}

- (int)countByEnumeratingWithState: (of_fast_enumeration_state_t*)state
			   objects: (id*)objects
			     count: (int)count
{
	int i, j;

	if (state->extra[0] == 0) {
		state->extra[0] = 1;
		state->extra[1] = PQnfields(res);
	}

	if (count > SIZE_MAX - state->state)
		@throw [OFOutOfRangeException exceptionWithClass: [self class]];

	if (state->state + count > state->extra[1])
		count = state->extra[1] - state->state;

	for (i = j = 0; i < count; i++) {
		if (PQgetisnull(res, row, state->state + i))
			continue;

		objects[j++] = [OFString stringWithUTF8String:
		    PQfname(res, state->state + i)];
	}

	state->state += count;
	state->itemsPtr = objects;
	state->mutationsPtr = (unsigned long*)self;

	return j;
}
@end

@implementation PGResultRowEnumerator
- initWithResult: (PGResult*)result_
	     row: (int)row_
{
	self = [super init];
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Modified test.m from [9dc0039f9f] to [f75f44e51e].

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			parameters: @2, @2, @YES, nil];
	[connection insertRow: @{ @"content": @"Hallo!", @"name": @"foo" }
		    intoTable: @"test"];

	result = [connection executeCommand: @"SELECT * FROM test"];
	of_log(@"%@", result);
	of_log(@"JSON: %@", [result JSONRepresentation]);

	for (id row in result)
		for (id col in row)
			of_log(@"%@", col);

	result = [connection executeCommand: @"SELECT COUNT(*) FROM test"];
	of_log(@"%@", result);

	[OFApplication terminate];
}
@end