|
One or more characteristics of an object. This property is read-only on UNIX.
Sets or returns a Long value.
For a Field object, the Attributes property is read-only, and its value can be the sum of any one or more of these FieldAttributeEnum values:
Value |
Description |
adFldMayDefer |
The field is deferred; that is, the field values are not retrieved from the data source with the whole record, but only when you explicitly access them. |
adFldUpdatable |
The field can be written. |
adFldUnknownUpdatable |
The provider cannot determine if the field can be written. |
adFldFixed |
The field contains fixed-length data. |
adFldIsNullable |
The field accepts Null values. |
adFldMayBeNull |
You can read Null values from the field. |
adFldLong |
The field is a long binary field. Also indicates that you can use the ADO Field Object AppendChunk Method and ADO Field Object GetChunk Method methods. |
adFldRowID |
The field contains some kind of record ID (record number, unique identifier, and so forth). |
adFldRowVersion |
The field contains some kind of time or date stamp used to track updates. |
adFldCacheDeferred |
The provider caches field values and subsequent reads are done from the cache. |
Use the Attributes property to set or return characteristics of Field objects.
When you set multiple attributes, you can sum the appropriate constants. If you set the property value to a sum including incompatible constants, an error occurs.
Copyright 2002 Sun Microsystems, Inc. All rights reserved. Legal Notice.