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authorBibiko <bibiko@eva.mpg.de>2010-02-20 17:07:38 +0000
committerBibiko <bibiko@eva.mpg.de>2010-02-20 17:07:38 +0000
commit50c726232203af0ae46a0641ca10bd126c78dc2c (patch)
treef1dba01d00492198ea2dd270f66ca4e7d0a3b318 /Source/SPTableData.m
parentba37b377d84cc24052538aad70257fc082c92dca (diff)
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• added to method informationForTable:
- the root dict key "primarykeyfield" = <field name> - the key "isprimarykey" for corresponding table field - the key "unique" = 1 if corresponding table field has a UNIQUE KEY
Diffstat (limited to 'Source/SPTableData.m')
-rw-r--r--Source/SPTableData.m49
1 files changed, 37 insertions, 12 deletions
diff --git a/Source/SPTableData.m b/Source/SPTableData.m
index fe13e4f3..20a3dbd7 100644
--- a/Source/SPTableData.m
+++ b/Source/SPTableData.m
@@ -33,6 +33,7 @@
#import "SPArrayAdditions.h"
#import "SPConstants.h"
#import "SPAlertSheets.h"
+#import "RegexKitLite.h"
@implementation SPTableData
@@ -303,7 +304,7 @@
/*
* Retrieve the CREATE TABLE string for a table and analyse it to extract the field
- * details and table encoding.
+ * details, primary key, unique keys, and table encoding.
* In future this could also be used to retrieve the majority of index information
* assuming information like cardinality isn't needed.
* This function is rather long due to the painful parsing required, but is fast.
@@ -371,7 +372,9 @@
NSCharacterSet *whitespaceAndNewlineSet = [NSCharacterSet whitespaceAndNewlineCharacterSet];
NSCharacterSet *quoteSet = [NSCharacterSet characterSetWithCharactersInString:@"`'\""];
NSCharacterSet *bracketSet = [NSCharacterSet characterSetWithCharactersInString:@"()"];
-
+
+ tableData = [NSMutableDictionary dictionary];
+
for (i = 0; i < [fieldStrings count]; i++) {
// Take this field/key string, trim whitespace from both ends and remove comments
@@ -430,7 +433,9 @@
}
// Store the column.
- [tableColumns addObject:[NSDictionary dictionaryWithDictionary:tableColumn]];
+ NSMutableDictionary *d = [NSMutableDictionary dictionaryWithCapacity:1];
+ [d setDictionary:tableColumn];
+ [tableColumns addObject:d];
// TODO: Otherwise it's a key definition, check, or other 'metadata'. Would be useful to parse/display these!
} else {
@@ -523,15 +528,36 @@
[constraintDetails release];
}
// primary key
- else if( [NSArrayObjectAtIndex(parts, 0) hasPrefix:@"PRIMARY"] ) {
+ // add "isprimarykey" to the corresponding tableColumn
+ // add dict root "primarykeyfield" = <field> for faster accessing
+ else if( [NSArrayObjectAtIndex(parts, 0) hasPrefix:@"PRIMARY"] && [parts count] == 3) {
+ NSString *parsedString = [(NSString*)NSArrayObjectAtIndex(parts, 2) stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
+ if([parsedString length]>4) {
+ NSString *priFieldName = [[parsedString substringWithRange:NSMakeRange(2,[parsedString length]-4)] stringByReplacingOccurrencesOfString:@"``" withString:@"`"];
+ [tableData setObject:priFieldName forKey:@"primarykeyfield"];
+ for(id tableColumn in tableColumns)
+ if([[tableColumn objectForKey:@"name"] isEqualToString:priFieldName]) {
+ [tableColumn setObject:[NSNumber numberWithInteger:1] forKey:@"isprimarykey"];
+ break;
+ }
+ }
}
- // key
- else if( [NSArrayObjectAtIndex(parts, 0) hasPrefix:@"KEY"] ) {
- /*
- NSLog( @"key %@.%@",
- [[parts objectAtIndex:1] stringByTrimmingCharactersInSet:junk],
- [[parts objectAtIndex:2] stringByTrimmingCharactersInSet:junk] );
- */
+ // unique keys
+ // add to each corresponding tableColumn the tag "unique" if given
+ else if( [NSArrayObjectAtIndex(parts, 0) hasPrefix:@"UNIQUE"] && [parts count] == 4) {
+ NSString *parsedString = [(NSString*)NSArrayObjectAtIndex(parts, 3) stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
+ if([parsedString length]>4) {
+ NSArray *uniqueFieldNames = [parsedString componentsSeparatedByString:@"`,`"];
+ for(NSString* uniq in uniqueFieldNames) {
+ NSString *uniqField = [[uniq stringByReplacingOccurrencesOfRegex:@"^\\(`|`\\)" withString:@""] stringByReplacingOccurrencesOfString:@"``" withString:@"`"];
+ for(id tableColumn in tableColumns)
+ if([[tableColumn objectForKey:@"name"] isEqualToString:uniqField]) {
+ [tableColumn setObject:[NSNumber numberWithInteger:1] forKey:@"unique"];
+ break;
+ }
+ }
+
+ }
}
// who knows
else {
@@ -597,7 +623,6 @@
}
- tableData = [NSMutableDictionary dictionary];
// this will be 'Table' or 'View'
[tableData setObject:[resultFieldNames objectAtIndex:0] forKey:@"type"];
[tableData setObject:[NSString stringWithString:encodingString] forKey:@"encoding"];