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#pragma once
#include "resource.h"
#include "compile_path.h"
#include <yql/essentials/public/udf/udf_type_builder.h>
#include <yql/essentials/public/udf/udf_value.h>
#include <yql/essentials/public/udf/udf_helpers.h>
#include <util/generic/yexception.h>
namespace NJson2Udf {
using namespace NKikimr;
using namespace NUdf;
using namespace NYql;
using namespace NJsonPath;
template <EDataSlot InputType, bool ThrowException>
class TSqlExists: public TBoxedValue {
public:
explicit TSqlExists(TSourcePosition pos)
: Pos_(pos)
{
}
static TStringRef Name();
static bool DeclareSignature(
const TStringRef& name,
TType* userType,
IFunctionTypeInfoBuilder& builder,
bool typesOnly) {
Y_UNUSED(userType);
if (name != Name()) {
return false;
}
auto jsonType = builder.Resource(JSON_NODE_RESOURCE_NAME);
TType* inputType = nullptr;
if constexpr (InputType == EDataSlot::JsonDocument) {
inputType = builder.SimpleType<TJsonDocument>();
} else {
inputType = jsonType;
}
auto inputOptionalType = builder.Optional()->Item(inputType).Build();
auto jsonPathType = builder.Resource(JSONPATH_RESOURCE_NAME);
auto dictType = builder.Dict()->Key<TUtf8>().Value(jsonType).Build();
auto optionalBoolType = builder.Optional()->Item<bool>().Build();
if constexpr (ThrowException) {
builder.Args()
->Add(inputOptionalType)
.Add(jsonPathType)
.Add(dictType)
.Done()
.Returns(optionalBoolType);
} else {
builder.Args()
->Add(inputOptionalType)
.Add(jsonPathType)
.Add(dictType)
.Add(optionalBoolType)
.Done()
.Returns(optionalBoolType);
}
if (!typesOnly) {
builder.Implementation(new TSqlExists(builder.GetSourcePosition()));
}
if constexpr (!ThrowException) {
builder.IsStrict();
}
return true;
}
private:
TUnboxedValue Run(
const IValueBuilder* valueBuilder,
const TUnboxedValuePod* args) const final {
Y_UNUSED(valueBuilder);
try {
if (!args[0].HasValue()) {
return TUnboxedValuePod();
}
TValue jsonDom;
if constexpr (InputType == EDataSlot::JsonDocument) {
jsonDom = TValue(NBinaryJson::TBinaryJsonReader::Make(args[0].AsStringRef())->GetRootCursor());
} else {
jsonDom = TValue(args[0]);
}
auto* jsonPathResource = static_cast<TJsonPathResource*>(args[1].AsBoxed().Get());
const auto& jsonPath = *jsonPathResource->Get();
const auto variables = DictToVariables(args[2]);
const auto result = ExecuteJsonPath(jsonPath, jsonDom, variables, valueBuilder);
if (result.IsError()) {
if constexpr (ThrowException) {
ythrow yexception() << "Error executing jsonpath:" << Endl << result.GetError() << Endl;
} else {
return args[3];
}
}
return TUnboxedValuePod(!result.GetNodes().empty());
} catch (const std::exception& e) {
UdfTerminate((TStringBuilder() << Pos_ << " " << e.what()).data());
}
}
TSourcePosition Pos_;
};
template <>
TStringRef TSqlExists<EDataSlot::Json, false>::Name() {
return "SqlExists";
}
template <>
TStringRef TSqlExists<EDataSlot::Json, true>::Name() {
return "SqlTryExists";
}
template <>
TStringRef TSqlExists<EDataSlot::JsonDocument, false>::Name() {
return "JsonDocumentSqlExists";
}
template <>
TStringRef TSqlExists<EDataSlot::JsonDocument, true>::Name() {
return "JsonDocumentSqlTryExists";
}
}
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