fork of https://github.com/oxigraph/rocksdb and https://github.com/facebook/rocksdb for nextgraph and oxigraph
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86 lines
2.5 KiB
86 lines
2.5 KiB
#include "db/column_family.h"
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#include "db/version_set.h"
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namespace rocksdb {
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ColumnFamilyData::ColumnFamilyData(uint32_t id, const std::string& name,
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Version* dummy_versions,
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const ColumnFamilyOptions& options)
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: id(id),
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name(name),
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dummy_versions(dummy_versions),
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current(nullptr),
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options(options) {}
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ColumnFamilyData::~ColumnFamilyData() {
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// List must be empty
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assert(dummy_versions->next_ == dummy_versions);
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delete dummy_versions;
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}
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ColumnFamilySet::ColumnFamilySet() : max_column_family_(0) {}
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ColumnFamilySet::~ColumnFamilySet() {
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for (auto& cfd : column_family_data_) {
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delete cfd.second;
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}
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for (auto& cfd : droppped_column_families_) {
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delete cfd;
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}
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}
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ColumnFamilyData* ColumnFamilySet::GetDefault() const {
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auto ret = GetColumnFamily(0);
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assert(ret != nullptr); // default column family should always exist
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return ret;
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}
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ColumnFamilyData* ColumnFamilySet::GetColumnFamily(uint32_t id) const {
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auto cfd_iter = column_family_data_.find(id);
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if (cfd_iter != column_family_data_.end()) {
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return cfd_iter->second;
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} else {
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return nullptr;
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}
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}
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bool ColumnFamilySet::Exists(uint32_t id) {
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return column_family_data_.find(id) != column_family_data_.end();
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}
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bool ColumnFamilySet::Exists(const std::string& name) {
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return column_families_.find(name) != column_families_.end();
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}
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uint32_t ColumnFamilySet::GetID(const std::string& name) {
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auto cfd_iter = column_families_.find(name);
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assert(cfd_iter != column_families_.end());
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return cfd_iter->second;
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}
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uint32_t ColumnFamilySet::GetNextColumnFamilyID() {
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return ++max_column_family_;
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}
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ColumnFamilyData* ColumnFamilySet::CreateColumnFamily(
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const std::string& name, uint32_t id, Version* dummy_versions,
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const ColumnFamilyOptions& options) {
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assert(column_families_.find(name) == column_families_.end());
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column_families_.insert({name, id});
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ColumnFamilyData* new_cfd =
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new ColumnFamilyData(id, name, dummy_versions, options);
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column_family_data_.insert({id, new_cfd});
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max_column_family_ = std::max(max_column_family_, id);
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return new_cfd;
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}
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void ColumnFamilySet::DropColumnFamily(uint32_t id) {
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auto cfd = column_family_data_.find(id);
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assert(cfd != column_family_data_.end());
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column_families_.erase(cfd->second->name);
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cfd->second->current->Unref();
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droppped_column_families_.push_back(cfd->second);
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column_family_data_.erase(cfd);
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}
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} // namespace rocksdb
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