lib.rs

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use datafusion_ffi::proto::logical_extension_codec::FFI_LogicalExtensionCodec;
use datafusion_ffi::table_provider::FFI_TableProvider;

/// This struct defines the module interfaces. It is to be shared by
/// both the module loading program and library that implements the
/// module. It is possible to move this definition into the loading
/// program and reference it in the modules, but this example shows
/// how a user may wish to separate these concerns.
#[repr(C)]
pub struct TableProviderModule {
    /// Constructs the table provider
    pub create_table:
        extern "C" fn(codec: FFI_LogicalExtensionCodec) -> FFI_TableProvider,
}