55 lines
1.5 KiB
C++
55 lines
1.5 KiB
C++
#pragma once
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#ifndef BLOBSTORE_IMPLEMENTATIONS_ONBLOCKS_DATATREE_H_
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#define BLOBSTORE_IMPLEMENTATIONS_ONBLOCKS_DATATREE_H_
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#include <memory>
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#include <messmer/cpp-utils/macros.h>
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#include <messmer/cpp-utils/optional_ownership_ptr.h>
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namespace blockstore {
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class Key;
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}
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namespace blobstore {
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namespace onblocks {
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namespace datanodestore {
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class DataNodeStore;
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class DataInnerNode;
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class DataLeafNode;
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class DataNode;
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}
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namespace datatreestore {
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class DataTree {
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public:
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DataTree(datanodestore::DataNodeStore *nodeStore, std::unique_ptr<datanodestore::DataNode> rootNode);
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virtual ~DataTree();
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std::unique_ptr<datanodestore::DataLeafNode> addDataLeaf();
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void removeLastDataLeaf();
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const blockstore::Key &key() const;
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void flush() const;
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private:
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datanodestore::DataNodeStore *_nodeStore;
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std::unique_ptr<datanodestore::DataNode> _rootNode;
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std::unique_ptr<datanodestore::DataLeafNode> addDataLeafAt(datanodestore::DataInnerNode *insertPos);
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cpputils::optional_ownership_ptr<datanodestore::DataNode> createChainOfInnerNodes(unsigned int num, datanodestore::DataLeafNode *leaf);
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std::unique_ptr<datanodestore::DataLeafNode> addDataLeafToFullTree();
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void deleteLastChildSubtree(datanodestore::DataInnerNode *node);
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void deleteSubtree(const blockstore::Key &key);
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void deleteChildrenOf(const datanodestore::DataNode &node);
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void deleteChildrenOf(const datanodestore::DataInnerNode &node);
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void ifRootHasOnlyOneChildReplaceRootWithItsChild();
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DISALLOW_COPY_AND_ASSIGN(DataTree);
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};
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}
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}
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}
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#endif
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