feat(btree): add btree global index reader/writer/factory (#89)

Author: lszskye

src/paimon/common/global_index/btree/btree_compatibility_test.cpp

@@ -0,0 +1,36 @@
+/*
+ * 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.
+ */
+
+#include "paimon/common/global_index/btree/btree_global_index_factory.h"
+
+#include <utility>
+
+#include "paimon/common/global_index/btree/btree_global_indexer.h"
+namespace paimon {
+
+const char BTreeGlobalIndexerFactory::IDENTIFIER[] = "btree-global";
+
+Result<std::unique_ptr<GlobalIndexer>> BTreeGlobalIndexerFactory::Create(
+    const std::map<std::string, std::string>& options) const {
+    return BTreeGlobalIndexer::Create(options);
+}
+
+REGISTER_PAIMON_FACTORY(BTreeGlobalIndexerFactory);
+
+}  // namespace paimon

src/paimon/common/global_index/btree/btree_global_index_factory.cpp

@@ -0,0 +1,42 @@
+/*
+ * 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.
+ */
+
+#pragma once
+
+#include <map>
+#include <memory>
+#include <string>
+
+#include "paimon/global_index/global_indexer_factory.h"
+
+namespace paimon {
+/// Factory for creating btree global indexers.
+class BTreeGlobalIndexerFactory : public GlobalIndexerFactory {
+ public:
+    static const char IDENTIFIER[];
+
+    const char* Identifier() const override {
+        return IDENTIFIER;
+    }
+
+    Result<std::unique_ptr<GlobalIndexer>> Create(
+        const std::map<std::string, std::string>& options) const override;
+};
+
+}  // namespace paimon