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#include "yql_kikimr_provider_impl.h"
#include <ydb/core/kqp/provider/mkql/yql_kikimr_mkql_expr_nodes.h>
#include <ydb/library/yql/core/yql_expr_optimize.h>
#include <ydb/library/yql/core/yql_expr_type_annotation.h>
#include <ydb/library/yql/core/yql_join.h>
namespace NYql {
namespace {
using namespace NNodes;
TExprNode::TPtr BuildMkqlVersionedTable(const TCoAtom& tableName, const TCoAtom& schemaVersion,
const TCoAtom& pathId, TExprContext& ctx, TPositionHandle pos)
{
return Build<TMkqlVersionedTable>(ctx, pos)
.Table(tableName)
.SchemaVersion(schemaVersion)
.PathId(pathId)
.Done()
.Ptr();
}
TExprNode::TPtr MkqlRewriteCallables(TCallable callable, TExprContext& ctx, const TMaybe<TString>& rtParamName) {
TMaybeNode<TCoParameter> readTarget;
if (rtParamName) {
readTarget = Build<TCoParameter>(ctx, callable.Pos())
.Name().Build(*rtParamName)
.Type<TCoDataType>()
.Type().Build("Uint32")
.Build()
.Done();
}
if (auto maybeSelectRow = callable.Maybe<TKiSelectRow>()) {
auto selectRow = maybeSelectRow.Cast();
auto vt = selectRow.Table();
TExprNode::TListType children = {
BuildMkqlVersionedTable(vt.Path(), vt.SchemaVersion(), vt.PathId(), ctx, selectRow.Pos()),
selectRow.Key().Ptr(),
selectRow.Select().Ptr()
};
if (readTarget) {
children.push_back(readTarget.Cast().Ptr());
}
return ctx.NewCallable(selectRow.Pos(), "SelectRow", std::move(children));
}
if (auto maybeSelectRange = callable.Maybe<TKiSelectRangeBase>()) {
auto selectRange = maybeSelectRange.Cast();
auto vt = selectRange.Table();
TExprNode::TListType children = {
BuildMkqlVersionedTable(vt.Path(), vt.SchemaVersion(), vt.PathId(), ctx, selectRange.Pos()),
selectRange.Range().Ptr(),
selectRange.Select().Ptr(),
selectRange.Settings().Ptr()
};
if (readTarget) {
children.push_back(readTarget.Cast().Ptr());
}
auto selectRangeMkql = ctx.NewCallable(selectRange.Pos(), "SelectRange", std::move(children));
if (selectRange.Maybe<TKiSelectRange>()) {
return ctx.Builder(selectRange.Pos())
.Callable("Member")
.Add(0, selectRangeMkql)
.Atom(1, "List")
.Seal()
.Build();
} else {
ctx.AddError(TIssue(ctx.GetPosition(selectRange.Pos()), TStringBuilder() << "Got unsupported callable: "
<< selectRange.CallableName()));
return nullptr;
}
}
if (auto maybeUpdateRow = callable.Maybe<TKiUpdateRow>()) {
auto updateRow = maybeUpdateRow.Cast();
auto vt = updateRow.Table();
return Build<TMkqlUpdateRow>(ctx, updateRow.Pos())
.Table(BuildMkqlVersionedTable(vt.Path(), vt.SchemaVersion(), vt.PathId(), ctx, updateRow.Pos()))
.Key(updateRow.Key())
.Update(updateRow.Update())
.Done()
.Ptr();
}
if (auto maybeEraseRow = callable.Maybe<TKiEraseRow>()) {
auto eraseRow = maybeEraseRow.Cast();
auto vt = eraseRow.Table();
return Build<TMkqlEraseRow>(ctx, eraseRow.Pos())
.Table(BuildMkqlVersionedTable(vt.Path(), vt.SchemaVersion(), vt.PathId(), ctx, eraseRow.Pos()))
.Key(eraseRow.Key())
.Done()
.Ptr();
}
if (auto setResult = callable.Maybe<TKiSetResult>()) {
return ctx.Builder(setResult.Cast().Pos())
.Callable("SetResult")
.Add(0, setResult.Cast().Name().Ptr())
.Add(1, setResult.Cast().Data().Ptr())
.Seal()
.Build();
}
if (auto acquireLocks = callable.Maybe<TKiAcquireLocks>()) {
return ctx.Builder(acquireLocks.Cast().Pos())
.Callable("AcquireLocks")
.Add(0, acquireLocks.Cast().LockTxId().Ptr())
.Seal()
.Build();
}
if (auto map = callable.Maybe<TKiMapParameter>()) {
return Build<TMkqlMapParameter>(ctx, map.Cast().Pos())
.Input(map.Cast().Input())
.Lambda(map.Cast().Lambda())
.Done()
.Ptr();
}
if (auto map = callable.Maybe<TKiFlatMapParameter>()) {
return ctx.Builder(map.Cast().Pos())
.Callable("FlatMapParameter")
.Add(0, map.Cast().Input().Ptr())
.Add(1, map.Cast().Lambda().Ptr())
.Seal()
.Build();
}
if (auto maybePartialSort = callable.Maybe<TKiPartialSort>()) {
return ctx.Builder(maybePartialSort.Cast().Pos())
.Callable("PartialSort")
.Add(0, maybePartialSort.Cast().Input().Ptr())
.Add(1, maybePartialSort.Cast().SortDirections().Ptr())
.Add(2, maybePartialSort.Cast().KeySelectorLambda().Ptr())
.Seal()
.Build();
}
if (auto maybePartialTake = callable.Maybe<TKiPartialTake>()) {
return ctx.Builder(maybePartialTake.Cast().Pos())
.Callable("PartialTake")
.Add(0, maybePartialTake.Cast().Input().Ptr())
.Add(1, maybePartialTake.Cast().Count().Ptr())
.Seal()
.Build();
}
return callable.Ptr();
}
} // namespace
TMaybeNode<TExprBase> TranslateToMkql(TExprBase node, TExprContext& ctx, const TMaybe<TString>& rtParamName) {
auto maybeProgram = node.Maybe<TKiProgram>();
YQL_ENSURE(maybeProgram);
auto program = maybeProgram.Cast();
bool hasResult = !program.Results().Empty();
if (hasResult) {
node = Build<TCoAppend>(ctx, node.Pos())
.List(program.Effects())
.Item<TKiSetResult>()
.Name().Build("Result")
.Data(program.Results())
.Build()
.Done();
} else {
node = program.Effects();
}
auto current = node.Ptr();
TExprNode::TPtr output;
TOptimizeExprSettings optSettings(nullptr);
optSettings.VisitChanges = true;
auto status = OptimizeExpr(current, output,
[rtParamName](const TExprNode::TPtr& input, TExprContext& ctx) {
auto ret = input;
auto node = TExprBase(input);
if (auto call = node.Maybe<TCallable>()) {
ret = MkqlRewriteCallables(call.Cast(), ctx, rtParamName);
if (ret != input) {
return ret;
}
}
return ret;
}, ctx, optSettings);
if (status != IGraphTransformer::TStatus::Ok) {
return TExprNode::TPtr();
}
return TExprBase(output);
}
} // namespace NYql
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