openForWrite

Opens the value stream for writing.

Any previous contents of the value will be discarded. Throws an SUPObjectNotSavedException if this SUPBigString object is an attribute of an entity that has not yet been created in the database.

Syntax

- (void)openForWrite :(SUPLong)newLength;

Parameters

newLength – The new value length in bytes. Some platforms may allow this parameter to be specified as 0, with the actual length to be determined later, depending on the amount of data written to the stream. Other platforms require the total amount of data written to the stream to match the specified value.

Examples

Open for writing – Opens the biography file for writing.

SUPSampleAuthor * author = [SUPSampleAuthor findByPrimaryKey:authorID];
    
SUPBigString *text = author.biography;
    
NSString *stringToWrite = @"something";
    
[text openForWrite:[stringToWrite length]];