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Query.cpp
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163 lines (140 loc) · 5.25 KB
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/*
Copyright (c) 2020 TOSHIBA Digital Solutions Corporation.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
#include "Query.h"
namespace griddb {
#if NAPI_VERSION <= 5
Napi::FunctionReference Query::constructor;
#endif
Napi::Object Query::init(Napi::Env env, Napi::Object exports) {
Napi::HandleScope scope(env);
Napi::Function func = DefineClass(env, "Query",
{ InstanceMethod("fetch", &Query::fetch),
InstanceMethod("setFetchOptions", &Query::setFetchOptions),
InstanceMethod("getRowSet", &Query::getRowSet),
});
#if NAPI_VERSION > 5
Napi::FunctionReference* constructor = new Napi::FunctionReference();
*constructor = Napi::Persistent(func);
Util::setInstanceData(env, "Query", constructor);
#else
constructor = Napi::Persistent(func);
constructor.SuppressDestruct();
#endif
exports.Set("Query", func);
return exports;
}
Query::Query(const Napi::CallbackInfo &info) :
Napi::ObjectWrap<Query>(info) {
Napi::Env env = info.Env();
Napi::HandleScope scope(env);
if (info.Length() != 3 || !info[0].IsExternal() || !info[1].IsExternal()
|| !info[2].IsExternal()) {
// Throw error
THROW_EXCEPTION_WITH_STR(env, "Wrong arguments", NULL)
return;
}
this->mQuery = info[0].As<Napi::External<GSQuery>>().Data();
this->mContainerInfo = info[1].As<Napi::External<GSContainerInfo>>().Data();
this->mRow = info[2].As<Napi::External<GSRow>>().Data();
}
Napi::Value Query::fetch(const Napi::CallbackInfo &info) {
Napi::Env env = info.Env();
Napi::Promise::Deferred deferred = Napi::Promise::Deferred::New(env);
GSRowSet *gsRowSet;
// Call method from C-Api.
GSBool gsForUpdate = GS_FALSE;
GSResult ret = gsFetch(mQuery, gsForUpdate, &gsRowSet);
// Check ret, if error, throw exception
if (!GS_SUCCEEDED(ret)) {
PROMISE_REJECT_WITH_ERROR_CODE(deferred, env, ret, mQuery)
}
// Create new RowSet object
Napi::EscapableHandleScope scope(env);
auto rowsetPtr = Napi::External<GSRowSet>::New(env, gsRowSet);
auto gsContainerInfoPtr =
Napi::External<GSContainerInfo>::New(env, mContainerInfo);
auto gsRowPtr = Napi::External<GSRow>::New(env, mRow);
#if NAPI_VERSION > 5
Napi::Value rowsetWrapper = scope.Escape(
Util::getInstanceData(env, "RowSet")->New({
rowsetPtr, gsContainerInfoPtr, gsRowPtr })).ToObject();
#else
Napi::Value rowsetWrapper = scope.Escape(RowSet::constructor.New({
rowsetPtr, gsContainerInfoPtr, gsRowPtr })).ToObject();
#endif
deferred.Resolve(rowsetWrapper);
return deferred.Promise();
}
Query::~Query() {
if (mQuery) {
gsCloseQuery(&mQuery);
mQuery = NULL;
}
}
void Query::setFetchOptions(const Napi::CallbackInfo &info) {
Napi::Env env = info.Env();
if (info.Length() > 1 || !info[0].IsObject()) {
THROW_EXCEPTION_WITH_STR(env, "Wrong arguments", mQuery)
return;
}
Napi::Object input = info[0].As<Napi::Object>();
int limit = 0;
if (input.Has("limit")) {
limit = input.Get("limit").As<Napi::Number>().Int32Value();
}
GSResult ret;
ret = gsSetFetchOption(mQuery, GS_FETCH_LIMIT, &limit, GS_TYPE_INTEGER);
if (!GS_SUCCEEDED(ret)) {
THROW_EXCEPTION_WITH_CODE(env, ret, mQuery)
return;
}
#if GS_COMPATIBILITY_SUPPORT_4_0
bool partial = true; // default value rowKey = true
if (input.Has("partial")) {
partial = input.Get("partial").As<Napi::Boolean>().ToBoolean();
}
// Need to call gsSetFetchOption as many as the number of options
ret = gsSetFetchOption(mQuery, GS_FETCH_PARTIAL_EXECUTION, &partial,
GS_TYPE_BOOL);
if (!GS_SUCCEEDED(ret)) {
THROW_EXCEPTION_WITH_CODE(env, ret, mQuery)
return;
}
#endif
}
Napi::Value Query::getRowSet(const Napi::CallbackInfo &info) {
Napi::Env env = info.Env();
GSRowSet *gsRowSet;
GSResult ret = gsGetRowSet(mQuery, &gsRowSet);
// Check ret, if error, throw exception
if (!GS_SUCCEEDED(ret)) {
THROW_EXCEPTION_WITH_CODE(env, ret, mQuery)
return env.Null();
}
auto rowset_ptr = Napi::External<GSRowSet>::New(env, gsRowSet);
auto containerInfo_ptr = Napi::External<GSContainerInfo>
::New(env, mContainerInfo);
auto row_ptr = Napi::External<GSRow>::New(env, mRow);
Napi::EscapableHandleScope scope(env);
#if NAPI_VERSION > 5
return scope.Escape(Util::getInstanceData(env, "RowSet")->New({
rowset_ptr, containerInfo_ptr, row_ptr })).ToObject();
#else
return scope.Escape(RowSet::constructor.New({
rowset_ptr, containerInfo_ptr, row_ptr })).ToObject();
#endif
}
GSQuery* Query::gsPtr() {
return mQuery;
}
} // namespace griddb