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query.cc
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// Copyright 2011 Mariano Iglesias <[email protected]>
// Copyright 2011 Georg Wicherski <[email protected]>
#include "./query.h"
bool node_db::Query::gmtDeltaLoaded = false;
int node_db::Query::gmtDelta;
uv_async_t node_db::Query::g_async;
void node_db::Query::Init(v8::Handle<v8::Object> target, v8::Persistent<v8::FunctionTemplate> constructorTemplate) {
NODE_ADD_PROTOTYPE_METHOD(constructorTemplate, "select", Select);
NODE_ADD_PROTOTYPE_METHOD(constructorTemplate, "from", From);
NODE_ADD_PROTOTYPE_METHOD(constructorTemplate, "join", Join);
NODE_ADD_PROTOTYPE_METHOD(constructorTemplate, "where", Where);
NODE_ADD_PROTOTYPE_METHOD(constructorTemplate, "and", And);
NODE_ADD_PROTOTYPE_METHOD(constructorTemplate, "or", Or);
NODE_ADD_PROTOTYPE_METHOD(constructorTemplate, "order", Order);
NODE_ADD_PROTOTYPE_METHOD(constructorTemplate, "limit", Limit);
NODE_ADD_PROTOTYPE_METHOD(constructorTemplate, "add", Add);
NODE_ADD_PROTOTYPE_METHOD(constructorTemplate, "insert", Insert);
NODE_ADD_PROTOTYPE_METHOD(constructorTemplate, "update", Update);
NODE_ADD_PROTOTYPE_METHOD(constructorTemplate, "set", Set);
NODE_ADD_PROTOTYPE_METHOD(constructorTemplate, "delete", Delete);
NODE_ADD_PROTOTYPE_METHOD(constructorTemplate, "sql", Sql);
NODE_ADD_PROTOTYPE_METHOD(constructorTemplate, "execute", Execute);
}
node_db::Query::Query(): node_db::EventEmitter(),
connection(NULL), async(true), cast(true), bufferText(false), cbStart(NULL), cbExecute(NULL), cbFinish(NULL) {
}
node_db::Query::~Query() {
for (std::vector< v8::Persistent<v8::Value> >::iterator iterator = this->values.begin(), end = this->values.end(); iterator != end; ++iterator) {
iterator->Dispose();
}
if (this->cbStart != NULL) {
node::cb_destroy(this->cbStart);
}
if (this->cbExecute != NULL) {
node::cb_destroy(this->cbExecute);
}
if (this->cbFinish != NULL) {
node::cb_destroy(this->cbFinish);
}
}
void node_db::Query::setConnection(node_db::Connection* connection) {
this->connection = connection;
}
v8::Handle<v8::Value> node_db::Query::Select(const v8::Arguments& args) {
v8::HandleScope scope;
if (args.Length() > 0) {
if (args[0]->IsArray()) {
ARG_CHECK_ARRAY(0, fields);
} else if (args[0]->IsObject()) {
ARG_CHECK_OBJECT(0, fields);
} else {
ARG_CHECK_STRING(0, fields);
}
} else {
ARG_CHECK_STRING(0, fields);
}
node_db::Query *query = node::ObjectWrap::Unwrap<node_db::Query>(args.This());
assert(query);
query->sql << "SELECT ";
if (args[0]->IsArray()) {
v8::Local<v8::Array> fields = v8::Array::Cast(*args[0]);
if (fields->Length() == 0) {
THROW_EXCEPTION("No fields specified in select")
}
for (uint32_t i = 0, limiti = fields->Length(); i < limiti; i++) {
if (i > 0) {
query->sql << ",";
}
try {
query->sql << query->fieldName(fields->Get(i));
} catch(const node_db::Exception& exception) {
THROW_EXCEPTION(exception.what())
}
}
} else if (args[0]->IsObject()) {
try {
query->sql << query->fieldName(args[0]);
} catch(const node_db::Exception& exception) {
THROW_EXCEPTION(exception.what())
}
} else {
v8::String::Utf8Value fields(args[0]->ToString());
query->sql << *fields;
}
return scope.Close(args.This());
}
v8::Handle<v8::Value> node_db::Query::From(const v8::Arguments& args) {
v8::HandleScope scope;
if (args.Length() > 0) {
if (args[0]->IsArray()) {
ARG_CHECK_ARRAY(0, fields);
} else if (args[0]->IsObject()) {
ARG_CHECK_OBJECT(0, tables);
} else {
ARG_CHECK_STRING(0, tables);
}
} else {
ARG_CHECK_STRING(0, tables);
}
ARG_CHECK_OPTIONAL_BOOL(1, escape);
node_db::Query *query = node::ObjectWrap::Unwrap<node_db::Query>(args.This());
assert(query);
bool escape = true;
if (args.Length() > 1) {
escape = args[1]->IsTrue();
}
query->sql << " FROM ";
try {
query->sql << query->tableName(args[0], escape);
} catch(const node_db::Exception& exception) {
THROW_EXCEPTION(exception.what());
}
return scope.Close(args.This());
}
v8::Handle<v8::Value> node_db::Query::Join(const v8::Arguments& args) {
v8::HandleScope scope;
ARG_CHECK_OBJECT(0, join);
ARG_CHECK_OPTIONAL_ARRAY(1, values);
v8::Local<v8::Object> join = args[0]->ToObject();
ARG_CHECK_OBJECT_ATTR_OPTIONAL_STRING(join, type);
ARG_CHECK_OBJECT_ATTR_STRING(join, table);
ARG_CHECK_OBJECT_ATTR_OPTIONAL_STRING(join, alias);
ARG_CHECK_OBJECT_ATTR_OPTIONAL_STRING(join, conditions);
ARG_CHECK_OBJECT_ATTR_OPTIONAL_BOOL(join, escape);
node_db::Query *query = node::ObjectWrap::Unwrap<node_db::Query>(args.This());
assert(query);
std::string type = "INNER";
bool escape = true;
if (join->Has(type_key)) {
v8::String::Utf8Value currentType(join->Get(type_key)->ToString());
type = *currentType;
std::transform(type.begin(), type.end(), type.begin(), toupper);
}
if (join->Has(escape_key)) {
escape = join->Get(escape_key)->IsTrue();
}
v8::String::Utf8Value table(join->Get(table_key)->ToString());
query->sql << " " << type << " JOIN ";
query->sql << (escape ? query->connection->escapeName(*table) : *table);
if (join->Has(alias_key)) {
v8::String::Utf8Value alias(join->Get(alias_key)->ToString());
query->sql << " AS ";
query->sql << (escape ? query->connection->escapeName(*alias) : *alias);
}
if (join->Has(conditions_key)) {
v8::String::Utf8Value conditions(join->Get(conditions_key)->ToObject());
std::string currentConditions = *conditions;
if (args.Length() > 1) {
v8::Local<v8::Array> currentValues = v8::Array::Cast(*args[1]);
for (uint32_t i = 0, limiti = currentValues->Length(); i < limiti; i++) {
query->values.push_back(v8::Persistent<v8::Value>::New(currentValues->Get(i)));
}
}
query->sql << " ON (" << currentConditions << ")";
}
return scope.Close(args.This());
}
v8::Handle<v8::Value> node_db::Query::Where(const v8::Arguments& args) {
v8::HandleScope scope;
node_db::Query *query = node::ObjectWrap::Unwrap<node_db::Query>(args.This());
assert(query);
return scope.Close(query->addCondition(args, "WHERE"));
}
v8::Handle<v8::Value> node_db::Query::And(const v8::Arguments& args) {
v8::HandleScope scope;
node_db::Query *query = node::ObjectWrap::Unwrap<node_db::Query>(args.This());
assert(query);
return scope.Close(query->addCondition(args, "AND"));
}
v8::Handle<v8::Value> node_db::Query::Or(const v8::Arguments& args) {
v8::HandleScope scope;
node_db::Query *query = node::ObjectWrap::Unwrap<node_db::Query>(args.This());
assert(query);
return scope.Close(query->addCondition(args, "OR"));
}
v8::Handle<v8::Value> node_db::Query::Order(const v8::Arguments& args) {
v8::HandleScope scope;
if (args.Length() > 0 && args[0]->IsObject()) {
ARG_CHECK_OBJECT(0, fields);
} else {
ARG_CHECK_STRING(0, fields);
}
ARG_CHECK_OPTIONAL_BOOL(1, escape);
node_db::Query *query = node::ObjectWrap::Unwrap<node_db::Query>(args.This());
assert(query);
bool escape = true;
if (args.Length() > 1) {
escape = args[1]->IsTrue();
}
query->sql << " ORDER BY ";
if (args[0]->IsObject()) {
v8::Local<v8::Object> fields = args[0]->ToObject();
v8::Local<v8::Array> properties = fields->GetPropertyNames();
if (properties->Length() == 0) {
THROW_EXCEPTION("Non empty objects should be used for fields in order");
}
for (uint32_t i = 0, limiti = properties->Length(); i < limiti; i++) {
v8::Local<v8::Value> propertyName = properties->Get(i);
v8::String::Utf8Value fieldName(propertyName);
v8::Local<v8::Value> currentValue = fields->Get(propertyName);
if (i > 0) {
query->sql << ",";
}
bool innerEscape = escape;
v8::Local<v8::Value> order;
if (currentValue->IsObject()) {
v8::Local<v8::Object> currentObject = currentValue->ToObject();
v8::Local<v8::String> escapeKey = v8::String::New("escape");
v8::Local<v8::String> orderKey = v8::String::New("order");
v8::Local<v8::Value> optionValue;
if (!currentObject->Has(orderKey)) {
THROW_EXCEPTION("The \"order\" option for the order field object must be specified");
}
order = currentObject->Get(orderKey);
if (currentObject->Has(escapeKey)) {
optionValue = currentObject->Get(escapeKey);
if (!optionValue->IsBoolean()) {
THROW_EXCEPTION("Specify a valid boolean value for the \"escape\" option in the order field object");
}
innerEscape = optionValue->IsTrue();
}
} else {
order = currentValue;
}
query->sql << (innerEscape ? query->connection->escapeName(*fieldName) : *fieldName);
query->sql << " ";
if (order->IsBoolean()) {
query->sql << (order->IsTrue() ? "ASC" : "DESC");
} else if (order->IsString()) {
v8::String::Utf8Value currentOrder(order->ToString());
query->sql << *currentOrder;
} else {
THROW_EXCEPTION("Invalid value specified for \"order\" property in order field");
}
}
} else {
v8::String::Utf8Value sql(args[0]->ToString());
query->sql << *sql;
}
return scope.Close(args.This());
}
v8::Handle<v8::Value> node_db::Query::Limit(const v8::Arguments& args) {
v8::HandleScope scope;
if (args.Length() > 1) {
ARG_CHECK_UINT32(0, offset);
ARG_CHECK_UINT32(1, rows);
} else {
ARG_CHECK_UINT32(0, rows);
}
node_db::Query *query = node::ObjectWrap::Unwrap<node_db::Query>(args.This());
assert(query);
query->sql << " LIMIT ";
if (args.Length() > 1) {
query->sql << args[0]->ToInt32()->Value();
query->sql << ",";
query->sql << args[1]->ToInt32()->Value();
} else {
query->sql << args[0]->ToInt32()->Value();
}
return scope.Close(args.This());
}
v8::Handle<v8::Value> node_db::Query::Add(const v8::Arguments& args) {
v8::HandleScope scope;
node_db::Query* innerQuery = NULL;
if (args.Length() > 0 && args[0]->IsObject()) {
v8::Local<v8::Object> object = args[0]->ToObject();
v8::Handle<v8::String> key = v8::String::New("sql");
if (!object->Has(key) || !object->Get(key)->IsFunction()) {
ARG_CHECK_STRING(0, sql);
}
innerQuery = node::ObjectWrap::Unwrap<node_db::Query>(object);
assert(innerQuery);
} else {
ARG_CHECK_STRING(0, sql);
}
node_db::Query *query = node::ObjectWrap::Unwrap<node_db::Query>(args.This());
assert(query);
if (innerQuery != NULL) {
query->sql << innerQuery->sql.str();
} else {
v8::String::Utf8Value sql(args[0]->ToString());
query->sql << *sql;
}
return scope.Close(args.This());
}
v8::Handle<v8::Value> node_db::Query::Delete(const v8::Arguments& args) {
v8::HandleScope scope;
if (args.Length() > 0) {
if (args[0]->IsArray()) {
ARG_CHECK_ARRAY(0, tables);
} else if (args[0]->IsObject()) {
ARG_CHECK_OBJECT(0, tables);
} else {
ARG_CHECK_STRING(0, tables);
}
ARG_CHECK_OPTIONAL_BOOL(1, escape);
}
node_db::Query *query = node::ObjectWrap::Unwrap<node_db::Query>(args.This());
assert(query);
bool escape = true;
if (args.Length() > 1) {
escape = args[1]->IsTrue();
}
query->sql << "DELETE";
if (args.Length() > 0) {
try {
query->sql << " " << query->tableName(args[0], escape);
} catch(const node_db::Exception& exception) {
THROW_EXCEPTION(exception.what());
}
}
return scope.Close(args.This());
}
v8::Handle<v8::Value> node_db::Query::Insert(const v8::Arguments& args) {
v8::HandleScope scope;
uint32_t argsLength = args.Length();
int fieldsIndex = -1, valuesIndex = -1;
if (argsLength > 0) {
ARG_CHECK_STRING(0, table);
if (argsLength > 2) {
if (args[1]->IsArray()) {
ARG_CHECK_ARRAY(1, fields);
} else if (args[1]->IsObject()) {
ARG_CHECK_OBJECT(1, fields);
} else if (!args[1]->IsFalse()) {
ARG_CHECK_STRING(1, fields);
}
fieldsIndex = 1;
if (!args[2]->IsFalse()) {
valuesIndex = 2;
ARG_CHECK_ARRAY(2, values);
}
ARG_CHECK_OPTIONAL_BOOL(3, escape);
} else if (argsLength > 1) {
ARG_CHECK_ARRAY(1, values);
valuesIndex = 1;
}
} else {
ARG_CHECK_STRING(0, table);
}
node_db::Query *query = node::ObjectWrap::Unwrap<node_db::Query>(args.This());
assert(query);
bool escape = true;
if (argsLength > 3) {
escape = args[3]->IsTrue();
}
try {
query->sql << "INSERT INTO " << query->tableName(args[0], escape);
} catch(const node_db::Exception& exception) {
THROW_EXCEPTION(exception.what());
}
if (argsLength > 1) {
if (fieldsIndex != -1) {
query->sql << "(";
if (args[fieldsIndex]->IsArray()) {
v8::Local<v8::Array> fields = v8::Array::Cast(*args[fieldsIndex]);
if (fields->Length() == 0) {
THROW_EXCEPTION("No fields specified in insert")
}
for (uint32_t i = 0, limiti = fields->Length(); i < limiti; i++) {
if (i > 0) {
query->sql << ",";
}
try {
v8::String::Utf8Value fieldName(fields->Get(i));
//query->fieldName(fields->Get(i));
query->sql << *fieldName;
} catch(const node_db::Exception& exception) {
THROW_EXCEPTION(exception.what())
}
}
} else {
v8::String::Utf8Value fields(args[fieldsIndex]->ToString());
query->sql << *fields;
}
query->sql << ")";
}
query->sql << " ";
if (valuesIndex != -1) {
v8::Local<v8::Array> values = v8::Array::Cast(*args[valuesIndex]);
uint32_t valuesLength = values->Length();
if (valuesLength > 0) {
bool multipleRecords = values->Get(0)->IsArray();
query->sql << "VALUES ";
if (!multipleRecords) {
query->sql << "(";
}
for (uint32_t i = 0; i < valuesLength; i++) {
if (i > 0) {
query->sql << ",";
}
query->sql << query->value(values->Get(i));
}
if (!multipleRecords) {
query->sql << ")";
}
}
}
} else {
query->sql << " ";
}
return scope.Close(args.This());
}
v8::Handle<v8::Value> node_db::Query::Update(const v8::Arguments& args) {
v8::HandleScope scope;
if (args.Length() > 0) {
if (args[0]->IsArray()) {
ARG_CHECK_ARRAY(0, tables);
} else if (args[0]->IsObject()) {
ARG_CHECK_OBJECT(0, tables);
} else {
ARG_CHECK_STRING(0, tables);
}
} else {
ARG_CHECK_STRING(0, tables);
}
ARG_CHECK_OPTIONAL_BOOL(1, escape);
node_db::Query *query = node::ObjectWrap::Unwrap<node_db::Query>(args.This());
assert(query);
bool escape = true;
if (args.Length() > 1) {
escape = args[1]->IsTrue();
}
query->sql << "UPDATE ";
try {
query->sql << query->tableName(args[0], escape);
} catch(const node_db::Exception& exception) {
THROW_EXCEPTION(exception.what());
}
return scope.Close(args.This());
}
v8::Handle<v8::Value> node_db::Query::Set(const v8::Arguments& args) {
v8::HandleScope scope;
ARG_CHECK_OBJECT(0, values);
ARG_CHECK_OPTIONAL_BOOL(1, escape);
node_db::Query *query = node::ObjectWrap::Unwrap<node_db::Query>(args.This());
assert(query);
bool escape = true;
if (args.Length() > 1) {
escape = args[1]->IsTrue();
}
query->sql << " SET ";
v8::Local<v8::Object> values = args[0]->ToObject();
v8::Local<v8::Array> valueProperties = values->GetPropertyNames();
if (valueProperties->Length() == 0) {
THROW_EXCEPTION("Non empty objects should be used for values in set");
}
for (uint32_t j = 0, limitj = valueProperties->Length(); j < limitj; j++) {
v8::Local<v8::Value> propertyName = valueProperties->Get(j);
v8::String::Utf8Value fieldName(propertyName);
v8::Local<v8::Value> currentValue = values->Get(propertyName);
if (j > 0) {
query->sql << ",";
}
query->sql << (escape ? query->connection->escapeName(*fieldName) : *fieldName);
query->sql << "=";
query->sql << query->value(currentValue);
}
return scope.Close(args.This());
}
v8::Handle<v8::Value> node_db::Query::Sql(const v8::Arguments& args) {
v8::HandleScope scope;
node_db::Query *query = node::ObjectWrap::Unwrap<node_db::Query>(args.This());
assert(query);
return scope.Close(v8::String::New(query->sql.str().c_str()));
}
v8::Handle<v8::Value> node_db::Query::Execute(const v8::Arguments& args) {
v8::HandleScope scope;
node_db::Query *query = node::ObjectWrap::Unwrap<node_db::Query>(args.This());
assert(query);
if (args.Length() > 0) {
v8::Handle<v8::Value> set = query->set(args);
if (!set.IsEmpty()) {
return scope.Close(set);
}
}
std::string sql;
try {
sql = query->parseQuery();
} catch(const node_db::Exception& exception) {
THROW_EXCEPTION(exception.what())
}
if (query->cbStart != NULL && !query->cbStart->IsEmpty()) {
v8::Local<v8::Value> argv[1];
argv[0] = v8::String::New(sql.c_str());
v8::TryCatch tryCatch;
v8::Handle<v8::Value> result = (*(query->cbStart))->Call(v8::Context::GetCurrent()->Global(), 1, argv);
if (tryCatch.HasCaught()) {
node::FatalException(tryCatch);
}
if (!result->IsUndefined()) {
if (result->IsFalse()) {
return scope.Close(v8::Undefined());
} else if (result->IsString()) {
v8::String::Utf8Value modifiedQuery(result->ToString());
sql = *modifiedQuery;
}
}
}
if (!query->connection->isAlive(false)) {
THROW_EXCEPTION("Can't execute a query without being connected")
}
execute_request_t *request = new execute_request_t();
if (request == NULL) {
THROW_EXCEPTION("Could not create EIO request")
}
query->sql.str("");
query->sql.clear();
query->sql << sql;
request->context = v8::Persistent<v8::Object>::New(args.This());
request->query = query;
request->buffered = false;
request->result = NULL;
request->rows = NULL;
request->error = NULL;
if (query->async) {
request->query->Ref();
uv_work_t* req = new uv_work_t();
req->data = request;
uv_queue_work(uv_default_loop(), req, uvExecute, (uv_after_work_cb)uvExecuteFinished);
#if NODE_VERSION_AT_LEAST(0, 7, 9)
uv_ref((uv_handle_t *)&g_async);
#else
uv_ref(uv_default_loop());
#endif
} else {
request->query->executeAsync(request);
}
return scope.Close(v8::Undefined());
}
void node_db::Query::uvExecute(uv_work_t* uvRequest) {
execute_request_t *request = static_cast<execute_request_t *>(uvRequest->data);
assert(request);
try {
request->query->connection->lock();
request->result = request->query->execute();
request->query->connection->unlock();
if (!request->result->isEmpty() && request->result != NULL) {
request->rows = new std::vector<row_t*>();
if (request->rows == NULL) {
throw node_db::Exception("Could not create buffer for rows");
}
request->buffered = request->result->isBuffered();
request->columnCount = request->result->columnCount();
while (request->result->hasNext()) {
unsigned long* columnLengths = request->result->columnLengths();
char** currentRow = request->result->next();
row_t* row = new row_t();
if (row == NULL) {
throw node_db::Exception("Could not create buffer for row");
}
row->columnLengths = new unsigned long[request->columnCount];
if (row->columnLengths == NULL) {
throw node_db::Exception("Could not create buffer for column lengths");
}
if (request->buffered) {
row->columns = currentRow;
for (uint16_t i = 0; i < request->columnCount; i++) {
row->columnLengths[i] = columnLengths[i];
}
} else {
row->columns = new char*[request->columnCount];
if (row->columns == NULL) {
throw node_db::Exception("Could not create buffer for columns");
}
for (uint16_t i = 0; i < request->columnCount; i++) {
row->columnLengths[i] = columnLengths[i];
if (currentRow[i] != NULL) {
row->columns[i] = new char[row->columnLengths[i]];
if (row->columns[i] == NULL) {
throw node_db::Exception("Could not create buffer for column");
}
memcpy(row->columns[i], currentRow[i], row->columnLengths[i]);
} else {
row->columns[i] = NULL;
}
}
}
request->rows->push_back(row);
}
if (!request->result->isBuffered()) {
request->result->release();
}
}
} catch(const node_db::Exception& exception) {
request->query->connection->unlock();
Query::freeRequest(request, false);
request->error = new std::string(exception.what());
}
}
void node_db::Query::uvExecuteFinished(uv_work_t* uvRequest) {
v8::HandleScope scope;
execute_request_t *request = static_cast<execute_request_t *>(uvRequest->data);
assert(request);
if (request->error == NULL && request->result != NULL) {
v8::Local<v8::Value> argv[3];
argv[0] = v8::Local<v8::Value>::New(v8::Null());
bool isEmpty = request->result->isEmpty();
if (!isEmpty) {
assert(request->rows);
size_t totalRows = request->rows->size();
v8::Local<v8::Array> rows = v8::Array::New(totalRows);
uint64_t index = 0;
for (std::vector<row_t*>::iterator iterator = request->rows->begin(), end = request->rows->end(); iterator != end; ++iterator, index++) {
row_t* currentRow = *iterator;
v8::Local<v8::Object> row = request->query->row(request->result, currentRow);
v8::Local<v8::Value> eachArgv[3];
eachArgv[0] = row;
eachArgv[1] = v8::Number::New(index);
eachArgv[2] = v8::Local<v8::Value>::New((index == totalRows - 1) ? v8::True() : v8::False());
request->query->Emit("each", 3, eachArgv);
rows->Set(index, row);
}
v8::Local<v8::Array> columns = v8::Array::New(request->columnCount);
for (uint16_t j = 0; j < request->columnCount; j++) {
node_db::Result::Column *currentColumn = request->result->column(j);
v8::Local<v8::Object> column = v8::Object::New();
column->Set(v8::String::New("name"), v8::String::New(currentColumn->getName().c_str()));
column->Set(v8::String::New("type"), NODE_CONSTANT(currentColumn->getType()));
columns->Set(j, column);
}
argv[1] = rows;
argv[2] = columns;
} else {
v8::Local<v8::Object> result = v8::Object::New();
result->Set(v8::String::New("id"), v8::Number::New(request->result->insertId()));
result->Set(v8::String::New("affected"), v8::Number::New(request->result->affectedCount()));
result->Set(v8::String::New("warning"), v8::Number::New(request->result->warningCount()));
argv[1] = result;
}
request->query->Emit("success", !isEmpty ? 2 : 1, &argv[1]);
if (request->query->cbExecute != NULL && !request->query->cbExecute->IsEmpty()) {
v8::TryCatch tryCatch;
(*(request->query->cbExecute))->Call(request->context, !isEmpty ? 3 : 2, argv);
if (tryCatch.HasCaught()) {
node::FatalException(tryCatch);
}
}
} else {
v8::Local<v8::Value> argv[1];
argv[0] = v8::String::New(request->error != NULL ? request->error->c_str() : "(unknown error)");
request->query->Emit("error", 1, argv);
if (request->query->cbExecute != NULL && !request->query->cbExecute->IsEmpty()) {
v8::TryCatch tryCatch;
(*(request->query->cbExecute))->Call(request->context, 1, argv);
if (tryCatch.HasCaught()) {
node::FatalException(tryCatch);
}
}
}
if (request->query->cbFinish != NULL && !request->query->cbFinish->IsEmpty()) {
v8::TryCatch tryCatch;
(*(request->query->cbFinish))->Call(v8::Context::GetCurrent()->Global(), 0, NULL);
if (tryCatch.HasCaught()) {
node::FatalException(tryCatch);
}
}
#if NODE_VERSION_AT_LEAST(0, 7, 9)
uv_unref((uv_handle_t *)&g_async);
#else
uv_unref(uv_default_loop());
#endif
request->query->Unref();
Query::freeRequest(request);
}
void node_db::Query::executeAsync(execute_request_t* request) {
bool freeAll = true;
try {
this->connection->lock();
request->result = this->execute();
this->connection->unlock();
if (request->result != NULL) {
v8::Local<v8::Value> argv[3];
argv[0] = v8::Local<v8::Value>::New(v8::Null());
bool isEmpty = request->result->isEmpty();
if (!isEmpty) {
request->columnCount = request->result->columnCount();
v8::Local<v8::Array> columns = v8::Array::New(request->columnCount);
v8::Local<v8::Array> rows;
try {
rows = v8::Array::New(request->result->count());
} catch(const node_db::Exception& exception) {
rows = v8::Array::New();
}
for (uint16_t i = 0; i < request->columnCount; i++) {
node_db::Result::Column *currentColumn = request->result->column(i);
v8::Local<v8::Object> column = v8::Object::New();
column->Set(v8::String::New("name"), v8::String::New(currentColumn->getName().c_str()));
column->Set(v8::String::New("type"), NODE_CONSTANT(currentColumn->getType()));
columns->Set(i, column);
}
row_t row;
uint64_t index = 0;
while (request->result->hasNext()) {
row.columnLengths = (unsigned long*) request->result->columnLengths();
row.columns = reinterpret_cast<char**>(request->result->next());
v8::Local<v8::Object> jsRow = this->row(request->result, &row);
v8::Local<v8::Value> eachArgv[3];
eachArgv[0] = jsRow;
eachArgv[1] = v8::Number::New(index);
eachArgv[2] = v8::Local<v8::Value>::New(request->result->hasNext() ? v8::True() : v8::False());
this->Emit("each", 3, eachArgv);
rows->Set(index++, jsRow);
}
if (!request->result->isBuffered()) {
request->result->release();
}
argv[1] = rows;
argv[2] = columns;
} else {
v8::Local<v8::Object> result = v8::Object::New();
result->Set(v8::String::New("id"), v8::Number::New(request->result->insertId()));
result->Set(v8::String::New("affected"), v8::Number::New(request->result->affectedCount()));
result->Set(v8::String::New("warning"), v8::Number::New(request->result->warningCount()));
argv[1] = result;
}
this->Emit("success", !isEmpty ? 2 : 1, &argv[1]);
if (this->cbExecute != NULL && !this->cbExecute->IsEmpty()) {
v8::TryCatch tryCatch;
(*(this->cbExecute))->Call(request->context, !isEmpty ? 3 : 2, argv);
if (tryCatch.HasCaught()) {
node::FatalException(tryCatch);
}
}
}
} catch(const node_db::Exception& exception) {
this->connection->unlock();
v8::Local<v8::Value> argv[1];
argv[0] = v8::String::New(exception.what());
this->Emit("error", 1, argv);
if (this->cbExecute != NULL && !this->cbExecute->IsEmpty()) {
v8::TryCatch tryCatch;
(*(this->cbExecute))->Call(request->context, 1, argv);
if (tryCatch.HasCaught()) {
node::FatalException(tryCatch);
}
}
freeAll = false;
}
Query::freeRequest(request, freeAll);
}
node_db::Result* node_db::Query::execute() const throw(node_db::Exception&) {
return this->connection->query(this->sql.str());
}
void node_db::Query::freeRequest(execute_request_t* request, bool freeAll) {
if (request->rows != NULL) {
for (std::vector<row_t*>::iterator iterator = request->rows->begin(), end = request->rows->end(); iterator != end; ++iterator) {
row_t* row = *iterator;
if (!request->buffered) {
for (uint16_t i = 0; i < request->columnCount; i++) {
if (row->columns[i] != NULL) {
delete row->columns[i];
}
}
delete [] row->columns;
}
delete [] row->columnLengths;
delete row;
}
delete request->rows;
}
if (request->error != NULL) {
delete request->error;
}
if (freeAll) {
if (request->result != NULL) {
delete request->result;
}
request->context.Dispose();
delete request;
}
}
v8::Handle<v8::Value> node_db::Query::set(const v8::Arguments& args) {
if (args.Length() == 0) {
return v8::Handle<v8::Value>();
}
int queryIndex = -1, optionsIndex = -1, valuesIndex = -1, callbackIndex = -1;
if (args.Length() > 3) {
ARG_CHECK_STRING(0, query);
ARG_CHECK_ARRAY(1, values);
ARG_CHECK_FUNCTION(2, callback);
ARG_CHECK_OBJECT(3, options);
queryIndex = 0;
valuesIndex = 1;
callbackIndex = 2;
optionsIndex = 3;
} else if (args.Length() == 3) {
ARG_CHECK_STRING(0, query);
queryIndex = 0;
if (args[2]->IsFunction()) {
ARG_CHECK_FUNCTION(2, callback);
if (args[1]->IsArray()) {
ARG_CHECK_ARRAY(1, values);
valuesIndex = 1;
} else {
ARG_CHECK_OBJECT(1, options);
optionsIndex = 1;
}
callbackIndex = 2;