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authorstuconnolly <stuart02@gmail.com>2012-09-26 07:23:08 +0000
committerstuconnolly <stuart02@gmail.com>2012-09-26 07:23:08 +0000
commit88263061eb326e58fe882bc91d09f52d3d49628d (patch)
treef16453cd3bc0afc429b7592a46a84196e775933d /Frameworks/PostgresKit/Source/FLXPostgresError.m
parent9e0da1ad71ea178867a8d3419f80a46b42c32d4c (diff)
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diff --git a/Frameworks/PostgresKit/Source/FLXPostgresError.m b/Frameworks/PostgresKit/Source/FLXPostgresError.m
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-//
-// $Id$
-//
-// FLXPostgresError.m
-// PostgresKit
-//
-// Created by Stuart Connolly (stuconnolly.com) on September 3, 2012.
-// Copyright (c) 2012 Stuart Connolly. All rights reserved.
-//
-// Permission is hereby granted, free of charge, to any person
-// obtaining a copy of this software and associated documentation
-// files (the "Software"), to deal in the Software without
-// restriction, including without limitation the rights to use,
-// copy, modify, merge, publish, distribute, sublicense, and/or sell
-// copies of the Software, and to permit persons to whom the
-// Software is furnished to do so, subject to the following
-// conditions:
-//
-// The above copyright notice and this permission notice shall be
-// included in all copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
-// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
-// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
-// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
-// OTHER DEALINGS IN THE SOFTWARE.
-
-#import "FLXPostgresError.h"
-#import "FLXPostgresException.h"
-
-@interface FLXPostgresError ()
-
-- (void)_extractErrorDetailsFromResult:(const PGresult *)result;
-- (NSString *)_extractErrorField:(int)field fromResult:(const PGresult *)result;
-
-@end
-
-@implementation FLXPostgresError
-
-@synthesize errorSeverity = _errorSeverity;
-@synthesize errorStateCode = _errorStateCode;
-@synthesize errorPrimaryMessage = _errorPrimaryMessage;
-@synthesize errorDetailMessage = _errorDetailMessage;
-@synthesize errorMessageHint = _errorMessageHint;
-@synthesize errorStatementPosition = _errorStatementPosition;
-
-#pragma mark -
-
-- (id)init
-{
- [FLXPostgresException raise:NSInternalInconsistencyException
- reason:@"%@ shouldn't be init'd directly; use initWithResult: instead.", [self className]];
-
- return nil;
-}
-
-- (id)initWithResult:(const void *)result
-{
- if ((self = [super init])) {
-
- _errorSeverity = nil;
- _errorStateCode = nil;
- _errorPrimaryMessage = nil;
- _errorDetailMessage = nil;
- _errorMessageHint = nil;
- _errorStatementPosition = -1;
-
- if (result) [self _extractErrorDetailsFromResult:(const PGresult *)result];
- }
-
- return self;
-}
-
-- (NSString *)description
-{
- return [NSString stringWithFormat:@"<%@: Sev %@ (%@): %@>", [self className], _errorSeverity, _errorStateCode, _errorPrimaryMessage];
-}
-
-#pragma mark -
-#pragma mark Private API
-
-/**
- * Extracts all the error information from the supplied result.
- *
- * @param result The Postgres result to extract the information from.
- */
-- (void)_extractErrorDetailsFromResult:(const PGresult *)result
-{
- // Note that we don't expose all the fields that are available.
- // The ones we don't mostly include information internal to Postgres
- // that generally isn't useful to end users.
- _errorSeverity = [self _extractErrorField:PG_DIAG_SEVERITY fromResult:result];
- _errorStateCode = [self _extractErrorField:PG_DIAG_SQLSTATE fromResult:result];
- _errorPrimaryMessage = [self _extractErrorField:PG_DIAG_MESSAGE_PRIMARY fromResult:result];
- _errorDetailMessage = [self _extractErrorField:PG_DIAG_MESSAGE_DETAIL fromResult:result];
- _errorMessageHint = [self _extractErrorField:PG_DIAG_MESSAGE_HINT fromResult:result];
- _errorStatementPosition = [[self _extractErrorField:PG_DIAG_STATEMENT_POSITION fromResult:result] integerValue];
-}
-
-/**
- * Extracts the supplied error field from the supplied Postgres result.
- *
- * @param field The error field to extract.
- * @param result The Postgres result to extract the field from.
- *
- * @return A string representing the error value. The caller is responsible for freeing the associated memory.
- */
-- (NSString *)_extractErrorField:(int)field fromResult:(const PGresult *)result
-{
- return [[[NSString alloc] initWithUTF8String:PQresultErrorField(result, field)] autorelease];
-}
-
-#pragma mark -
-
-- (void)dealloc
-{
- if (_errorSeverity) [_errorSeverity release], _errorSeverity = nil;
- if (_errorStateCode) [_errorStateCode release], _errorStateCode = nil;
- if (_errorPrimaryMessage) [_errorPrimaryMessage release], _errorPrimaryMessage = nil;
- if (_errorDetailMessage) [_errorDetailMessage release], _errorDetailMessage = nil;
- if (_errorMessageHint) [_errorMessageHint release], _errorMessageHint = nil;
-
- [super dealloc];
-}
-
-@end