added remove column method on table

changes.txt

@@ -1,6 +1,7 @@
 2014-03-07
 ==========
 * Adding appendRow to TightdbTable.
+* Adding method removeColumn on table.
 
 2014-03-05
 ==========

src/tightdb/objc/table.h

@@ -208,6 +208,8 @@
 -(size_t)addColumnWithType:(TightdbType)type andName:(NSString *)name;
 -(size_t)addColumnWithType:(TightdbType)type andName:(NSString *)name error:(NSError *__autoreleasing *)error;
 
+-(void)removeColumnWithIndex:(size_t)columnIndex;
+
 /* Searching */
 /* FIXME: Should be findBool:(BOOL)value inColumn:(size_t)colNdx; */
 -(size_t)findBool:(size_t)colNdx value:(BOOL)value;

src/tightdb/objc/table_objc.mm

@@ -272,6 +272,9 @@ -(BOOL)addColumnWithType:(TightdbType)type andName:(NSString*)name error:(NSErro
  return YES;
 }
 
+
+
+
 -(TightdbDescriptor*)addColumnTable:(NSString*)name
 {
  return [self addColumnTable:name error:nil];
@@ -1219,6 +1222,20 @@ -(size_t)addColumnWithType:(TightdbType)type andName:(NSString*)name error:(NSEr
  0);
 }
 
+-(void)removeColumnWithIndex:(size_t)columnIndex
+{
+ TIGHTDB_EXCEPTION_HANDLER_COLUMN_INDEX_VALID(columnIndex);
+
+ try {
+ m_table->remove_column(columnIndex);
+ }
+ catch(std::exception& ex) {
+ NSException* exception = [NSException exceptionWithName:@"tightdb:core_exception"
+ reason:[NSString stringWithUTF8String:ex.what()]
+ userInfo:[NSMutableDictionary dictionary]];
+ [exception raise];
+ }
+}
 
 -(size_t)findBool:(size_t)col_ndx value:(BOOL)value
 {

src/tightdb/objc/test/dynamic_table.m

@@ -187,6 +187,37 @@ - (void)testTable
  STFail(@"1 row excepted");
 }
 
+-(void)testRemoveColumns
+{
+
+ TightdbTable *t = [[TightdbTable alloc] init];
+ [t addColumnWithType:tightdb_Int andName:@"col0"];
+ STAssertTrue([t getColumnCount] == 1,@"1 column added" );
+
+ [t removeColumnWithIndex:0];
+ STAssertTrue([t getColumnCount] == 0, @"Colum removed");
+
+ for (int i=0;i<10;i++) {
+ [t addColumnWithType:tightdb_Int andName:@"name"];
+ }
+
+ STAssertThrows([t removeColumnWithIndex:10], @"Out of bounds");
+ STAssertThrows([t removeColumnWithIndex:-1], @"Less than zero colIndex");
+
+ STAssertTrue([t getColumnCount] == 10, @"10 columns added");
+
+ for (int i=0;i<10;i++) {
+ [t removeColumnWithIndex:0];
+ }
+
+ STAssertTrue([t getColumnCount] == 0, @"Colums removed");
+
+ STAssertThrows([t removeColumnWithIndex:1], @"No columns added");
+ STAssertThrows([t removeColumnWithIndex:-1], @"Less than zero colIndex");
+
+
+}
+
 - (void)testDataTypes_Dynamic
 {
  TightdbTable* table = [[TightdbTable alloc] init];

src/tightdb/objc/util.hpp

@@ -134,6 +134,14 @@ catch(std::exception& ex) { \
  [exception raise]; \
 }
 
+#define TIGHTDB_EXCEPTION_HANDLER_COLUMN_INDEX_VALID(columnIndex) \
+ if (columnIndex >= [self getColumnCount]) { \
+ NSException* exception = [NSException exceptionWithName:@"tightdb:column_index_out_of_bounds" \
+ reason:@"The specified column index is not within the table bounds" \
+ userInfo:[NSMutableDictionary dictionary]]; \
+ [exception raise]; \
+} \
+
 #define TIGHTDB_EXCEPTION_HANDLER_CORE_EXCEPTION(action) \
 try { action } \
 catch(std::exception& ex) { \