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doris/be/src/vec/exec/vjdbc_connector.cpp

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// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you 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 "vec/exec/vjdbc_connector.h"
#include <gen_cpp/Types_types.h>
#include <algorithm>
#include <boost/iterator/iterator_facade.hpp>
// IWYU pragma: no_include <bits/std_abs.h>
#include <cmath> // IWYU pragma: keep
#include <memory>
#include <ostream>
#include <utility>
#include "common/logging.h"
#include "common/status.h"
#include "exec/table_connector.h"
#include "gutil/strings/substitute.h"
#include "jni.h"
#include "runtime/define_primitive_type.h"
#include "runtime/descriptors.h"
#include "runtime/runtime_state.h"
#include "runtime/types.h"
#include "runtime/user_function_cache.h"
#include "util/jni-util.h"
#include "util/runtime_profile.h"
#include "vec/columns/column_nullable.h"
#include "vec/core/block.h"
#include "vec/data_types/data_type_nullable.h"
#include "vec/data_types/data_type_string.h"
#include "vec/exec/jni_connector.h"
#include "vec/exprs/vexpr.h"
#include "vec/functions/simple_function_factory.h"
#include "vec/io/reader_buffer.h"
namespace doris::vectorized {
const char* JDBC_EXECUTOR_CLASS = "org/apache/doris/jdbc/JdbcExecutor";
const char* JDBC_EXECUTOR_CTOR_SIGNATURE = "([B)V";
const char* JDBC_EXECUTOR_STMT_WRITE_SIGNATURE = "(Ljava/util/Map;)I";
const char* JDBC_EXECUTOR_HAS_NEXT_SIGNATURE = "()Z";
const char* JDBC_EXECUTOR_GET_TYPES_SIGNATURE = "()Ljava/util/List;";
const char* JDBC_EXECUTOR_CLOSE_SIGNATURE = "()V";
const char* JDBC_EXECUTOR_TRANSACTION_SIGNATURE = "()V";
JdbcConnector::JdbcConnector(const JdbcConnectorParam& param)
: TableConnector(param.tuple_desc, param.use_transaction, param.table_name,
param.query_string),
_conn_param(param),
_closed(false) {}
JdbcConnector::~JdbcConnector() {
if (!_closed) {
static_cast<void>(close());
}
}
#define GET_BASIC_JAVA_CLAZZ(JAVA_TYPE, CPP_TYPE) \
RETURN_IF_ERROR(JniUtil::GetGlobalClassRef(env, JAVA_TYPE, &_executor_##CPP_TYPE##_clazz));
#define DELETE_BASIC_JAVA_CLAZZ_REF(CPP_TYPE) env->DeleteGlobalRef(_executor_##CPP_TYPE##_clazz);
Status JdbcConnector::close(Status /*unused*/) {
SCOPED_RAW_TIMER(&_jdbc_statistic._connector_close_timer);
_closed = true;
if (!_is_open) {
return Status::OK();
}
if (_is_in_transaction) {
static_cast<void>(abort_trans());
}
JNIEnv* env;
RETURN_IF_ERROR(JniUtil::GetJNIEnv(&env));
env->DeleteGlobalRef(_executor_clazz);
DELETE_BASIC_JAVA_CLAZZ_REF(object)
DELETE_BASIC_JAVA_CLAZZ_REF(string)
DELETE_BASIC_JAVA_CLAZZ_REF(list)
#undef DELETE_BASIC_JAVA_CLAZZ_REF
env->CallNonvirtualVoidMethod(_executor_obj, _executor_clazz, _executor_close_id);
RETURN_IF_ERROR(JniUtil::GetJniExceptionMsg(env));
env->DeleteGlobalRef(_executor_obj);
return Status::OK();
}
Status JdbcConnector::open(RuntimeState* state, bool read) {
if (_is_open) {
LOG(INFO) << "this scanner of jdbc already opened";
return Status::OK();
}
JNIEnv* env = nullptr;
RETURN_IF_ERROR(JniUtil::GetJNIEnv(&env));
RETURN_IF_ERROR(JniUtil::get_jni_scanner_class(env, JDBC_EXECUTOR_CLASS, &_executor_clazz));
GET_BASIC_JAVA_CLAZZ("java/util/List", list)
GET_BASIC_JAVA_CLAZZ("java/lang/Object", object)
GET_BASIC_JAVA_CLAZZ("java/lang/String", string)
#undef GET_BASIC_JAVA_CLAZZ
RETURN_IF_ERROR(_register_func_id(env));
// Add a scoped cleanup jni reference object. This cleans up local refs made below.
JniLocalFrame jni_frame;
{
std::string local_location;
std::hash<std::string> hash_str;
auto function_cache = UserFunctionCache::instance();
if (_conn_param.resource_name.empty()) {
// for jdbcExternalTable, _conn_param.resource_name == ""
// so, we use _conn_param.driver_path as key of jarpath
SCOPED_RAW_TIMER(&_jdbc_statistic._load_jar_timer);
RETURN_IF_ERROR(function_cache->get_jarpath(
std::abs((int64_t)hash_str(_conn_param.driver_path)), _conn_param.driver_path,
_conn_param.driver_checksum, &local_location));
} else {
SCOPED_RAW_TIMER(&_jdbc_statistic._load_jar_timer);
RETURN_IF_ERROR(function_cache->get_jarpath(
std::abs((int64_t)hash_str(_conn_param.resource_name)), _conn_param.driver_path,
_conn_param.driver_checksum, &local_location));
}
VLOG_QUERY << "driver local path = " << local_location;
TJdbcExecutorCtorParams ctor_params;
ctor_params.__set_statement(_sql_str);
ctor_params.__set_jdbc_url(_conn_param.jdbc_url);
ctor_params.__set_jdbc_user(_conn_param.user);
ctor_params.__set_jdbc_password(_conn_param.passwd);
ctor_params.__set_jdbc_driver_class(_conn_param.driver_class);
ctor_params.__set_driver_path(local_location);
ctor_params.__set_batch_size(read ? state->batch_size() : 0);
ctor_params.__set_op(read ? TJdbcOperation::READ : TJdbcOperation::WRITE);
ctor_params.__set_table_type(_conn_param.table_type);
jbyteArray ctor_params_bytes;
// Pushed frame will be popped when jni_frame goes out-of-scope.
RETURN_IF_ERROR(jni_frame.push(env));
RETURN_IF_ERROR(SerializeThriftMsg(env, &ctor_params, &ctor_params_bytes));
{
SCOPED_RAW_TIMER(&_jdbc_statistic._init_connector_timer);
_executor_obj = env->NewObject(_executor_clazz, _executor_ctor_id, ctor_params_bytes);
}
jbyte* pBytes = env->GetByteArrayElements(ctor_params_bytes, nullptr);
env->ReleaseByteArrayElements(ctor_params_bytes, pBytes, JNI_ABORT);
env->DeleteLocalRef(ctor_params_bytes);
}
RETURN_ERROR_IF_EXC(env);
RETURN_IF_ERROR(JniUtil::LocalToGlobalRef(env, _executor_obj, &_executor_obj));
_is_open = true;
static_cast<void>(begin_trans());
return Status::OK();
}
Status JdbcConnector::query() {
if (!_is_open) {
return Status::InternalError("Query before open of JdbcConnector.");
}
// check materialize num equal
int materialize_num = 0;
for (int i = 0; i < _tuple_desc->slots().size(); ++i) {
if (_tuple_desc->slots()[i]->is_materialized()) {
materialize_num++;
}
}
JNIEnv* env = nullptr;
RETURN_IF_ERROR(JniUtil::GetJNIEnv(&env));
{
SCOPED_RAW_TIMER(&_jdbc_statistic._execte_read_timer);
jint colunm_count =
env->CallNonvirtualIntMethod(_executor_obj, _executor_clazz, _executor_read_id);
if (auto status = JniUtil::GetJniExceptionMsg(env); !status) {
return Status::InternalError("GetJniExceptionMsg meet error, query={}, msg={}",
_conn_param.query_string, status.to_string());
}
if (colunm_count != materialize_num) {
return Status::InternalError("input and output column num not equal of jdbc query.");
}
}
LOG(INFO) << "JdbcConnector::query has exec success: " << _sql_str;
if (_conn_param.table_type != TOdbcTableType::NEBULA) {
RETURN_IF_ERROR(_check_column_type());
}
return Status::OK();
}
Status JdbcConnector::get_next(bool* eos, Block* block, int batch_size) {
if (!_is_open) {
return Status::InternalError("get_next before open of jdbc connector.");
}
SCOPED_RAW_TIMER(&_jdbc_statistic._get_data_timer);
JNIEnv* env = nullptr;
RETURN_IF_ERROR(JniUtil::GetJNIEnv(&env));
jboolean has_next =
env->CallNonvirtualBooleanMethod(_executor_obj, _executor_clazz, _executor_has_next_id);
if (has_next != JNI_TRUE) {
*eos = true;
return Status::OK();
}
RETURN_IF_ERROR(JniUtil::GetJniExceptionMsg(env));
auto column_size = _tuple_desc->slots().size();
auto slots = _tuple_desc->slots();
jobject map = _get_reader_params(block, env, column_size);
SCOPED_RAW_TIMER(&_jdbc_statistic._get_block_address_timer);
long address =
env->CallLongMethod(_executor_obj, _executor_get_block_address_id, batch_size, map);
RETURN_IF_ERROR(JniUtil::GetJniExceptionMsg(env));
env->DeleteLocalRef(map);
std::vector<size_t> all_columns;
for (size_t i = 0; i < column_size; ++i) {
all_columns.push_back(i);
}
SCOPED_RAW_TIMER(&_jdbc_statistic._fill_block_timer);
Status fill_block_status = JniConnector::fill_block(block, all_columns, address);
if (!fill_block_status) {
return fill_block_status;
}
Status cast_status = _cast_string_to_special(block, env, column_size);
if (!cast_status) {
return cast_status;
}
return JniUtil::GetJniExceptionMsg(env);
}
Status JdbcConnector::append(vectorized::Block* block,
const vectorized::VExprContextSPtrs& output_vexpr_ctxs,
uint32_t start_send_row, uint32_t* num_rows_sent,
TOdbcTableType::type table_type) {
RETURN_IF_ERROR(exec_stmt_write(block, output_vexpr_ctxs, num_rows_sent));
COUNTER_UPDATE(_sent_rows_counter, *num_rows_sent);
return Status::OK();
}
Status JdbcConnector::exec_stmt_write(Block* block, const VExprContextSPtrs& output_vexpr_ctxs,
uint32_t* num_rows_sent) {
SCOPED_TIMER(_result_send_timer);
JNIEnv* env = nullptr;
RETURN_IF_ERROR(JniUtil::GetJNIEnv(&env));
// prepare table meta information
std::unique_ptr<long[]> meta_data;
RETURN_IF_ERROR(JniConnector::to_java_table(block, meta_data));
long meta_address = (long)meta_data.get();
auto table_schema = JniConnector::parse_table_schema(block);
// prepare constructor parameters
std::map<String, String> write_params = {{"meta_address", std::to_string(meta_address)},
{"required_fields", table_schema.first},
{"columns_types", table_schema.second}};
jobject hashmap_object = JniUtil::convert_to_java_map(env, write_params);
env->CallNonvirtualIntMethod(_executor_obj, _executor_clazz, _executor_stmt_write_id,
hashmap_object);
env->DeleteLocalRef(hashmap_object);
RETURN_IF_ERROR(JniUtil::GetJniExceptionMsg(env));
*num_rows_sent = block->rows();
return Status::OK();
}
Status JdbcConnector::begin_trans() {
if (_use_tranaction) {
JNIEnv* env = nullptr;
RETURN_IF_ERROR(JniUtil::GetJNIEnv(&env));
env->CallNonvirtualVoidMethod(_executor_obj, _executor_clazz, _executor_begin_trans_id);
RETURN_IF_ERROR(JniUtil::GetJniExceptionMsg(env));
_is_in_transaction = true;
}
return Status::OK();
}
Status JdbcConnector::abort_trans() {
if (!_is_in_transaction) {
return Status::InternalError("Abort transaction before begin trans.");
}
JNIEnv* env = nullptr;
RETURN_IF_ERROR(JniUtil::GetJNIEnv(&env));
env->CallNonvirtualVoidMethod(_executor_obj, _executor_clazz, _executor_abort_trans_id);
return JniUtil::GetJniExceptionMsg(env);
}
Status JdbcConnector::finish_trans() {
if (_use_tranaction && _is_in_transaction) {
JNIEnv* env = nullptr;
RETURN_IF_ERROR(JniUtil::GetJNIEnv(&env));
env->CallNonvirtualVoidMethod(_executor_obj, _executor_clazz, _executor_finish_trans_id);
RETURN_IF_ERROR(JniUtil::GetJniExceptionMsg(env));
_is_in_transaction = false;
}
return Status::OK();
}
Status JdbcConnector::_register_func_id(JNIEnv* env) {
auto register_id = [&](jclass clazz, const char* func_name, const char* func_sign,
jmethodID& func_id) {
func_id = env->GetMethodID(clazz, func_name, func_sign);
Status s = JniUtil::GetJniExceptionMsg(env);
if (!s.ok()) {
return Status::InternalError(strings::Substitute(
"Jdbc connector _register_func_id meet error and error is $0", s.to_string()));
}
return s;
};
RETURN_IF_ERROR(register_id(_executor_clazz, "<init>", JDBC_EXECUTOR_CTOR_SIGNATURE,
_executor_ctor_id));
RETURN_IF_ERROR(register_id(_executor_clazz, "write", JDBC_EXECUTOR_STMT_WRITE_SIGNATURE,
_executor_stmt_write_id));
RETURN_IF_ERROR(register_id(_executor_clazz, "read", "()I", _executor_read_id));
RETURN_IF_ERROR(register_id(_executor_clazz, "close", JDBC_EXECUTOR_CLOSE_SIGNATURE,
_executor_close_id));
RETURN_IF_ERROR(register_id(_executor_clazz, "hasNext", JDBC_EXECUTOR_HAS_NEXT_SIGNATURE,
_executor_has_next_id));
RETURN_IF_ERROR(register_id(_executor_clazz, "getBlockAddress", "(ILjava/util/Map;)J",
_executor_get_block_address_id));
RETURN_IF_ERROR(
register_id(_executor_clazz, "getCurBlockRows", "()I", _executor_block_rows_id));
RETURN_IF_ERROR(register_id(_executor_list_clazz, "get", "(I)Ljava/lang/Object;",
_executor_get_list_id));
RETURN_IF_ERROR(register_id(_executor_string_clazz, "getBytes", "(Ljava/lang/String;)[B",
_get_bytes_id));
RETURN_IF_ERROR(
register_id(_executor_object_clazz, "toString", "()Ljava/lang/String;", _to_string_id));
RETURN_IF_ERROR(register_id(_executor_clazz, "openTrans", JDBC_EXECUTOR_TRANSACTION_SIGNATURE,
_executor_begin_trans_id));
RETURN_IF_ERROR(register_id(_executor_clazz, "commitTrans", JDBC_EXECUTOR_TRANSACTION_SIGNATURE,
_executor_finish_trans_id));
RETURN_IF_ERROR(register_id(_executor_clazz, "rollbackTrans",
JDBC_EXECUTOR_TRANSACTION_SIGNATURE, _executor_abort_trans_id));
RETURN_IF_ERROR(register_id(_executor_clazz, "getResultColumnTypeNames",
JDBC_EXECUTOR_GET_TYPES_SIGNATURE, _executor_get_types_id));
return Status::OK();
}
Status JdbcConnector::_check_column_type() {
SCOPED_RAW_TIMER(&_jdbc_statistic._check_type_timer);
JNIEnv* env = nullptr;
RETURN_IF_ERROR(JniUtil::GetJNIEnv(&env));
jobject type_lists =
env->CallNonvirtualObjectMethod(_executor_obj, _executor_clazz, _executor_get_types_id);
auto column_size = _tuple_desc->slots().size();
for (int column_index = 0, materialized_column_index = 0; column_index < column_size;
++column_index) {
auto slot_desc = _tuple_desc->slots()[column_index];
if (!slot_desc->is_materialized()) {
continue;
}
jobject column_type =
env->CallObjectMethod(type_lists, _executor_get_list_id, materialized_column_index);
const std::string& type_str = _jobject_to_string(env, column_type);
RETURN_IF_ERROR(_check_type(slot_desc, type_str, column_index));
env->DeleteLocalRef(column_type);
materialized_column_index++;
}
env->DeleteLocalRef(type_lists);
return JniUtil::GetJniExceptionMsg(env);
}
/* type mapping: https://doris.apache.org/zh-CN/docs/dev/ecosystem/external-table/jdbc-of-doris?_highlight=jdbc
Doris MYSQL PostgreSQL Oracle SQLServer
BOOLEAN java.lang.Boolean java.lang.Boolean java.lang.Boolean
TINYINT java.lang.Integer java.lang.Short
SMALLINT java.lang.Integer java.lang.Integer java.math.BigDecimal java.lang.Short
INT java.lang.Integer java.lang.Integer java.math.BigDecimal java.lang.Integer
BIGINT java.lang.Long java.lang.Long java.lang.Long
LARGET java.math.BigInteger
DECIMAL java.math.BigDecimal java.math.BigDecimal java.math.BigDecimal java.math.BigDecimal
VARCHAR java.lang.String java.lang.String java.lang.String java.lang.String
DOUBLE java.lang.Double java.lang.Double java.lang.Double java.lang.Double
FLOAT java.lang.Float java.lang.Float java.lang.Float
DATE java.sql.Date java.sql.Date java.sql.Date
DATETIME java.sql.Timestamp java.sql.Timestamp java.sql.Timestamp java.sql.Timestamp
NOTE: because oracle always use number(p,s) to create all numerical type, so it's java type maybe java.math.BigDecimal
*/
Status JdbcConnector::_check_type(SlotDescriptor* slot_desc, const std::string& type_str,
int column_index) {
const std::string error_msg = fmt::format(
"Fail to convert jdbc type of {} to doris type {} on column: {}. You need to "
"check this column type between external table and doris table.",
type_str, slot_desc->type().debug_string(), slot_desc->col_name());
switch (slot_desc->type().type) {
case TYPE_BOOLEAN: {
if (type_str != "java.lang.Boolean" && type_str != "java.lang.Byte" &&
type_str != "java.lang.Integer") {
return Status::InternalError(error_msg);
}
break;
}
case TYPE_TINYINT:
case TYPE_SMALLINT:
case TYPE_INT: {
if (type_str != "java.lang.Short" && type_str != "java.lang.Integer" &&
type_str != "java.math.BigDecimal" && type_str != "java.lang.Byte" &&
type_str != "com.clickhouse.data.value.UnsignedByte" &&
type_str != "com.clickhouse.data.value.UnsignedShort" && type_str != "java.lang.Long") {
return Status::InternalError(error_msg);
}
break;
}
case TYPE_BIGINT:
case TYPE_LARGEINT: {
if (type_str != "java.lang.Long" && type_str != "java.math.BigDecimal" &&
type_str != "java.math.BigInteger" && type_str != "java.lang.String" &&
type_str != "com.clickhouse.data.value.UnsignedInteger" &&
type_str != "com.clickhouse.data.value.UnsignedLong") {
return Status::InternalError(error_msg);
}
break;
}
case TYPE_FLOAT: {
if (type_str != "java.lang.Float" && type_str != "java.math.BigDecimal") {
return Status::InternalError(error_msg);
}
break;
}
case TYPE_DOUBLE: {
if (type_str != "java.lang.Double" && type_str != "java.math.BigDecimal") {
return Status::InternalError(error_msg);
}
break;
}
case TYPE_CHAR:
case TYPE_VARCHAR:
case TYPE_STRING: {
//now here break directly
break;
}
case TYPE_DATE:
case TYPE_DATEV2:
case TYPE_TIMEV2:
case TYPE_DATETIME:
case TYPE_DATETIMEV2: {
if (type_str != "java.sql.Timestamp" && type_str != "java.time.LocalDateTime" &&
type_str != "java.sql.Date" && type_str != "java.time.LocalDate" &&
type_str != "oracle.sql.TIMESTAMP" && type_str != "java.time.OffsetDateTime") {
return Status::InternalError(error_msg);
}
break;
}
case TYPE_DECIMALV2:
case TYPE_DECIMAL32:
case TYPE_DECIMAL64:
case TYPE_DECIMAL128I:
case TYPE_DECIMAL256: {
if (type_str != "java.math.BigDecimal") {
return Status::InternalError(error_msg);
}
break;
}
case TYPE_ARRAY: {
if (type_str != "java.sql.Array" && type_str != "java.lang.String" &&
type_str != "java.lang.Object") {
return Status::InternalError(error_msg);
}
break;
}
case TYPE_JSONB: {
if (type_str != "java.lang.String" && type_str != "org.postgresql.util.PGobject") {
return Status::InternalError(error_msg);
}
_map_column_idx_to_cast_idx_json[column_index] = _input_json_string_types.size();
if (slot_desc->is_nullable()) {
_input_json_string_types.push_back(make_nullable(std::make_shared<DataTypeString>()));
} else {
_input_json_string_types.push_back(std::make_shared<DataTypeString>());
}
str_json_cols.push_back(
_input_json_string_types[_map_column_idx_to_cast_idx_json[column_index]]
->create_column());
break;
}
case TYPE_HLL: {
if (type_str != "java.lang.String") {
return Status::InternalError(error_msg);
}
_map_column_idx_to_cast_idx_hll[column_index] = _input_hll_string_types.size();
if (slot_desc->is_nullable()) {
_input_hll_string_types.push_back(make_nullable(std::make_shared<DataTypeString>()));
} else {
_input_hll_string_types.push_back(std::make_shared<DataTypeString>());
}
str_hll_cols.push_back(
_input_hll_string_types[_map_column_idx_to_cast_idx_hll[column_index]]
->create_column());
break;
}
case TYPE_OBJECT: {
if (type_str != "java.lang.String") {
return Status::InternalError(error_msg);
}
_map_column_idx_to_cast_idx_bitmap[column_index] = _input_bitmap_string_types.size();
if (slot_desc->is_nullable()) {
_input_bitmap_string_types.push_back(make_nullable(std::make_shared<DataTypeString>()));
} else {
_input_bitmap_string_types.push_back(std::make_shared<DataTypeString>());
}
str_bitmap_cols.push_back(
_input_bitmap_string_types[_map_column_idx_to_cast_idx_bitmap[column_index]]
->create_column());
break;
}
default: {
return Status::InternalError(error_msg);
}
}
return Status::OK();
}
std::string JdbcConnector::_jobject_to_string(JNIEnv* env, jobject jobj) {
jobject jstr = env->CallObjectMethod(jobj, _to_string_id);
auto coding = env->NewStringUTF("UTF-8");
const jbyteArray stringJbytes = (jbyteArray)env->CallObjectMethod(jstr, _get_bytes_id, coding);
size_t length = (size_t)env->GetArrayLength(stringJbytes);
jbyte* pBytes = env->GetByteArrayElements(stringJbytes, nullptr);
std::string str = std::string((char*)pBytes, length);
env->ReleaseByteArrayElements(stringJbytes, pBytes, JNI_ABORT);
env->DeleteLocalRef(stringJbytes);
env->DeleteLocalRef(jstr);
env->DeleteLocalRef(coding);
return str;
}
jobject JdbcConnector::_get_reader_params(Block* block, JNIEnv* env, size_t column_size) {
std::ostringstream columns_nullable;
std::ostringstream columns_replace_string;
std::ostringstream required_fields;
std::ostringstream columns_types;
for (int i = 0; i < column_size; ++i) {
auto* slot = _tuple_desc->slots()[i];
if (slot->is_materialized()) {
auto type = slot->type();
// Record if column is nullable
columns_nullable << (slot->is_nullable() ? "true" : "false") << ",";
// Check column type and replace accordingly
std::string replace_type = "not_replace";
if (type.is_bitmap_type()) {
replace_type = "bitmap";
} else if (type.is_hll_type()) {
replace_type = "hll";
} else if (type.is_json_type()) {
replace_type = "jsonb";
}
columns_replace_string << replace_type << ",";
if (replace_type != "not_replace") {
block->get_by_position(i).column = std::make_shared<DataTypeString>()
->create_column()
->convert_to_full_column_if_const();
block->get_by_position(i).type = std::make_shared<DataTypeString>();
if (slot->is_nullable()) {
block->get_by_position(i).column =
make_nullable(block->get_by_position(i).column);
block->get_by_position(i).type = make_nullable(block->get_by_position(i).type);
}
}
}
// Record required fields and column types
std::string field = slot->col_name();
std::string jni_type;
if (slot->type().is_bitmap_type() || slot->type().is_hll_type() ||
slot->type().is_json_type()) {
jni_type = "string";
} else {
jni_type = JniConnector::get_jni_type(slot->type());
}
required_fields << (i != 0 ? "," : "") << field;
columns_types << (i != 0 ? "#" : "") << jni_type;
}
std::map<String, String> reader_params = {{"is_nullable", columns_nullable.str()},
{"replace_string", columns_replace_string.str()},
{"required_fields", required_fields.str()},
{"columns_types", columns_types.str()}};
return JniUtil::convert_to_java_map(env, reader_params);
}
Status JdbcConnector::_cast_string_to_special(Block* block, JNIEnv* env, size_t column_size) {
for (size_t column_index = 0; column_index < column_size; ++column_index) {
auto* slot_desc = _tuple_desc->slots()[column_index];
// because the fe planner filter the non_materialize column
if (!slot_desc->is_materialized()) {
continue;
}
jint num_rows = env->CallNonvirtualIntMethod(_executor_obj, _executor_clazz,
_executor_block_rows_id);
RETURN_IF_ERROR(JniUtil::GetJniExceptionMsg(env));
if (slot_desc->type().is_hll_type()) {
static_cast<void>(_cast_string_to_hll(slot_desc, block, column_index, num_rows));
} else if (slot_desc->type().is_json_type()) {
static_cast<void>(_cast_string_to_json(slot_desc, block, column_index, num_rows));
} else if (slot_desc->type().is_bitmap_type()) {
static_cast<void>(_cast_string_to_bitmap(slot_desc, block, column_index, num_rows));
}
}
return Status::OK();
}
Status JdbcConnector::_cast_string_to_hll(const SlotDescriptor* slot_desc, Block* block,
int column_index, int rows) {
DataTypePtr _target_data_type = slot_desc->get_data_type_ptr();
std::string _target_data_type_name = _target_data_type->get_name();
DataTypePtr _cast_param_data_type = _target_data_type;
ColumnPtr _cast_param = _cast_param_data_type->create_column_const_with_default_value(1);
auto& input_col = block->get_by_position(column_index).column;
ColumnsWithTypeAndName argument_template;
argument_template.reserve(2);
argument_template.emplace_back(
std::move(input_col),
_input_hll_string_types[_map_column_idx_to_cast_idx_hll[column_index]],
"java.sql.String");
argument_template.emplace_back(_cast_param, _cast_param_data_type, _target_data_type_name);
FunctionBasePtr func_cast = SimpleFunctionFactory::instance().get_function(
"CAST", argument_template, make_nullable(_target_data_type));
Block cast_block(argument_template);
int result_idx = cast_block.columns();
cast_block.insert({nullptr, make_nullable(_target_data_type), "cast_result"});
static_cast<void>(func_cast->execute(nullptr, cast_block, {0, 1}, result_idx, rows));
auto res_col = cast_block.get_by_position(result_idx).column;
block->get_by_position(column_index).type = _target_data_type;
if (_target_data_type->is_nullable()) {
block->replace_by_position(column_index, res_col);
} else {
auto nested_ptr = reinterpret_cast<const vectorized::ColumnNullable*>(res_col.get())
->get_nested_column_ptr();
block->replace_by_position(column_index, nested_ptr);
}
return Status::OK();
}
Status JdbcConnector::_cast_string_to_bitmap(const SlotDescriptor* slot_desc, Block* block,
int column_index, int rows) {
DataTypePtr _target_data_type = slot_desc->get_data_type_ptr();
std::string _target_data_type_name = _target_data_type->get_name();
DataTypePtr _cast_param_data_type = _target_data_type;
ColumnPtr _cast_param = _cast_param_data_type->create_column_const_with_default_value(1);
auto& input_col = block->get_by_position(column_index).column;
ColumnsWithTypeAndName argument_template;
argument_template.reserve(2);
argument_template.emplace_back(
std::move(input_col),
_input_bitmap_string_types[_map_column_idx_to_cast_idx_bitmap[column_index]],
"java.sql.String");
argument_template.emplace_back(_cast_param, _cast_param_data_type, _target_data_type_name);
FunctionBasePtr func_cast = SimpleFunctionFactory::instance().get_function(
"CAST", argument_template, make_nullable(_target_data_type));
Block cast_block(argument_template);
int result_idx = cast_block.columns();
cast_block.insert({nullptr, make_nullable(_target_data_type), "cast_result"});
static_cast<void>(func_cast->execute(nullptr, cast_block, {0, 1}, result_idx, rows));
auto res_col = cast_block.get_by_position(result_idx).column;
block->get_by_position(column_index).type = _target_data_type;
if (_target_data_type->is_nullable()) {
block->replace_by_position(column_index, res_col);
} else {
auto nested_ptr = reinterpret_cast<const vectorized::ColumnNullable*>(res_col.get())
->get_nested_column_ptr();
block->replace_by_position(column_index, nested_ptr);
}
return Status::OK();
}
Status JdbcConnector::_cast_string_to_json(const SlotDescriptor* slot_desc, Block* block,
int column_index, int rows) {
DataTypePtr _target_data_type = slot_desc->get_data_type_ptr();
std::string _target_data_type_name = _target_data_type->get_name();
DataTypePtr _cast_param_data_type = _target_data_type;
ColumnPtr _cast_param = _cast_param_data_type->create_column_const(1, "{}");
auto& input_col = block->get_by_position(column_index).column;
ColumnsWithTypeAndName argument_template;
argument_template.reserve(2);
argument_template.emplace_back(
std::move(input_col),
_input_json_string_types[_map_column_idx_to_cast_idx_json[column_index]],
"java.sql.String");
argument_template.emplace_back(_cast_param, _cast_param_data_type, _target_data_type_name);
FunctionBasePtr func_cast = SimpleFunctionFactory::instance().get_function(
"CAST", argument_template, make_nullable(_target_data_type));
Block cast_block(argument_template);
int result_idx = cast_block.columns();
cast_block.insert({nullptr, make_nullable(_target_data_type), "cast_result"});
static_cast<void>(func_cast->execute(nullptr, cast_block, {0, 1}, result_idx, rows));
auto res_col = cast_block.get_by_position(result_idx).column;
block->get_by_position(column_index).type = _target_data_type;
if (_target_data_type->is_nullable()) {
block->replace_by_position(column_index, res_col);
} else {
auto nested_ptr = reinterpret_cast<const vectorized::ColumnNullable*>(res_col.get())
->get_nested_column_ptr();
block->replace_by_position(column_index, nested_ptr);
}
return Status::OK();
}
} // namespace doris::vectorized
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