| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you under the Apache License, Version 2.0 (the |
| // "License"); you may not use this file except in compliance |
| // with the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, |
| // software distributed under the License is distributed on an |
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| // KIND, either express or implied. See the License for the |
| // specific language governing permissions and limitations |
| // under the License. |
| |
| 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, |
| } |
