Trait odbc_api::handles::CData[−][src]

pub unsafe trait CData {
    fn cdata_type(&self) -> CDataType;

    fn indicator_ptr(&self) -> *const isize;

    fn value_ptr(&self) -> *const c_void;

    fn buffer_length(&self) -> isize;
}
Expand description

Provides description of C type layout and pointers to it. Used to bind and buffers to ODBC statements.

Required methods

The identifier of the C data type of the value buffer. When it is retrieving data from the data source with fetch, the driver converts the data to this type. When it sends data to the source, the driver converts the data from this type.

Indicates the length of variable sized types. May be zero for fixed sized types.

Pointer to a value corresponding to the one described by cdata_type.

Maximum length of the type in bytes (not characters). It is required to index values in bound buffers, if more than one parameter is bound. Can be set to zero for types not bound as parameter arrays, i.e. CStr.

Implementations on Foreign Types

Implementors