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#pragma once
#include <Storages/IStorage_fwd.h>
#include <Storages/TableLockHolder.h>
#include <Storages/StorageSnapshot.h>
#include <Interpreters/Context_fwd.h>
#include <Interpreters/StorageID.h>
#include <Analyzer/IQueryTreeNode.h>
#include <Analyzer/TableExpressionModifiers.h>
namespace DB
{
/** Table node represents table in query tree.
* Example: SELECT a FROM test_table.
* test_table - is identifier, that during query analysis pass must be resolved into table node.
*/
class TableNode;
using TableNodePtr = std::shared_ptr<TableNode>;
class TableNode : public IQueryTreeNode
{
public:
/// Construct table node with storage, storage id, storage lock, storage snapshot
explicit TableNode(StoragePtr storage_, StorageID storage_id_, TableLockHolder storage_lock_, StorageSnapshotPtr storage_snapshot_);
/// Construct table node with storage, storage lock, storage snapshot
explicit TableNode(StoragePtr storage_, TableLockHolder storage_lock_, StorageSnapshotPtr storage_snapshot_);
/// Construct table node with storage, context
explicit TableNode(StoragePtr storage_, const ContextPtr & context);
/// Get storage
const StoragePtr & getStorage() const
{
return storage;
}
/// Get storage id
const StorageID & getStorageID() const
{
return storage_id;
}
/// Get storage snapshot
const StorageSnapshotPtr & getStorageSnapshot() const
{
return storage_snapshot;
}
/// Get storage lock
const TableLockHolder & getStorageLock() const
{
return storage_lock;
}
/// Get temporary table name
const std::string & getTemporaryTableName() const
{
return temporary_table_name;
}
/// Set temporary table name
void setTemporaryTableName(std::string temporary_table_name_value)
{
temporary_table_name = std::move(temporary_table_name_value);
}
/// Return true if table node has table expression modifiers, false otherwise
bool hasTableExpressionModifiers() const
{
return table_expression_modifiers.has_value();
}
/// Get table expression modifiers
const std::optional<TableExpressionModifiers> & getTableExpressionModifiers() const
{
return table_expression_modifiers;
}
/// Get table expression modifiers
std::optional<TableExpressionModifiers> & getTableExpressionModifiers()
{
return table_expression_modifiers;
}
/// Set table expression modifiers
void setTableExpressionModifiers(TableExpressionModifiers table_expression_modifiers_value)
{
table_expression_modifiers = std::move(table_expression_modifiers_value);
}
QueryTreeNodeType getNodeType() const override
{
return QueryTreeNodeType::TABLE;
}
void dumpTreeImpl(WriteBuffer & buffer, FormatState & format_state, size_t indent) const override;
protected:
bool isEqualImpl(const IQueryTreeNode & rhs) const override;
void updateTreeHashImpl(HashState & state) const override;
QueryTreeNodePtr cloneImpl() const override;
ASTPtr toASTImpl(const ConvertToASTOptions & options) const override;
private:
StoragePtr storage;
StorageID storage_id;
TableLockHolder storage_lock;
StorageSnapshotPtr storage_snapshot;
std::optional<TableExpressionModifiers> table_expression_modifiers;
std::string temporary_table_name;
static constexpr size_t children_size = 0;
};
}
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