Module odbc_api::buffers

This module contains buffers intended to be bound to ODBC statement handles.

Structs

• BinColumn
  A buffer intended to be bound to a column of a cursor. Elements of the buffer will contain a variable amount of bytes up to a maximum length. Since elements of this type have variable length an additional indicator buffer is also maintained, whether the column is nullable or not. Therefore this buffer type is used for variable sized binary data whether it is nullable or not.
• BinColumnIt
  Iterator over a binary column. See [crate::buffers::AnyColumnView]
• BinColumnSliceMut
  A view to a mutable array parameter text buffer, which allows for filling the buffer with values.
• BinColumnView
• ColumnarBuffer
  A columnar buffer intended to be bound with crate::Cursor::bind_buffer in order to obtain results from a cursor.
• NullableSlice
  Iterates over the elements of a column buffer. Returned by crate::buffers::ColumnarBuffer::column as part of an [crate::buffers::AnyColumnView].
• NullableSliceMut
  Used to fill a column buffer with an iterator. Returned by crate::ColumnarBulkInserter::column_mut as part of an [crate::buffers::AnyColumnSliceMut].
• TextColumn
  A buffer intended to be bound to a column of a cursor. Elements of the buffer will contain a variable amount of characters up to a maximum string length. Since most SQL types have a string representation this buffer can be bound to a column of almost any type, ODBC driver and driver manager should take care of the conversion. Since elements of this type have variable length an indicator buffer needs to be bound, whether the column is nullable or not, and therefore does not matter for this buffer.
• TextColumnIt
  Iterator over a text column. See TextColumnView::iter
• TextColumnSliceMut
  A view to a mutable array parameter text buffer, which allows for filling the buffer with values.
• TextColumnView
  Allows read only access to the valid part of a text column.

Enums

• AnyBuffer
  Buffer holding a single column of either a result set or paramater
• AnySlice
  A borrowed view on the valid rows in a column of a crate::buffers::ColumnarBuffer.
• AnySliceMut
  A mutable slice of an input buffer, with runtime type information. Edit values in this slice in order to send parameters in bulk to a database.
• BufferDesc
  Describes a column of a crate::buffers::ColumnarBuffer.
• Indicator
  Indicates existence and length of a value.

Traits

• ColumnBuffer
  A buffer for a single column intended to be used together with ColumnarBuffer.
• Item
  Can either be extracted as a slice or a NullableSlice from an AnySlice. This allows the user to avoid matching on all possibile variants of an AnySlice in case the buffered type is known at compile time.

Type Definitions

• CharColumn
  A column buffer for character data. The actual encoding used may depend on your system locale.
• ColumnarAnyBuffer
  Flexible columnar buffer implementation. Bind this to a cursor to fetch values in bulk, or pass this as a parameter to a statement, to submit many parameters at once.
• TextRowSet
  This row set binds a string buffer to each column, which is large enough to hold the maximum length string representation for each element in the row set at once.
• WCharColumn
  This buffer uses wide characters which implies UTF-16 encoding. UTF-8 encoding is preferable for most applications, but contrary to its sibling crate::buffers::CharColumn this buffer types implied encoding does not depend on the system locale.