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3151 lines (2927 loc) · 82.1 KB
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/*
Copyright (c) 2017 TOSHIBA Digital Solutions Corporation
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*!
@file
@brief Implementation of Expr
*/
#include "util/type.h"
#include "util/allocator.h"
#include "util/container.h"
#include "util/time.h"
#include <algorithm>
#include <cctype>
#include <iostream>
#include <map>
#include <sstream>
#include <stack>
#include <stdexcept>
#include <string>
#include "expression.h"
#include "qp_def.h"
#include "gis_generator.h"
#include "function_map.h"
#include "lexer.h"
#include "query.h"
#include "meta_store.h"
/*!
* @brief Return the type of the expression
* @return The expression is a simple value
*/
bool Expr::isNumeric() const {
if (type_ != VALUE) return false;
if (value_ == NULL) {
GS_THROW_USER_ERROR(GS_ERROR_TQ_CRITICAL_LOGIC_ERROR,
"Internal logic error: value == NULL");
}
return value_->isNumerical();
}
/*!
* @brief Return the type of the expression
* @return The expression is a simple value of the given type
*/
bool Expr::isNumericOfType(ColumnType t) const {
if (type_ != VALUE) return false;
if (value_ == NULL) {
GS_THROW_USER_ERROR(GS_ERROR_TQ_CRITICAL_LOGIC_ERROR,
"Internal logic error: value == NULL");
}
return value_->getType() == t;
}
/*!
* @brief Return the type of the expression
* @return The expression is a simple value of the given type
*/
bool Expr::isNumericInteger() const {
if (type_ != VALUE) return false;
if (value_ == NULL) {
GS_THROW_USER_ERROR(GS_ERROR_TQ_CRITICAL_LOGIC_ERROR,
"Internal logic error: value == NULL");
}
return value_->isInteger();
}
/*!
* @brief Return the type of the expression
* @return The expression is a simple value of the given type
*/
bool Expr::isNumericFloat() const {
if (type_ != VALUE) return false;
if (value_ == NULL) {
GS_THROW_USER_ERROR(GS_ERROR_TQ_CRITICAL_LOGIC_ERROR,
"Internal logic error: value == NULL");
}
return value_->isFloat();
}
/*!
* @brief Return the type of the expression
* @return The expression is a simple value
*/
bool Expr::isBoolean() const {
if (type_ != VALUE) return false;
if (value_ == NULL) {
GS_THROW_USER_ERROR(GS_ERROR_TQ_CRITICAL_LOGIC_ERROR,
"Internal logic error: value == NULL");
}
ColumnType t = value_->getType();
return (t == COLUMN_TYPE_BOOL);
}
/*!
* @brief Return the type of the expression
* @return The expression is a string value
*/
bool Expr::isString() const {
if (type_ != VALUE) return false;
if (value_ == NULL) {
GS_THROW_USER_ERROR(GS_ERROR_TQ_CRITICAL_LOGIC_ERROR,
"Internal logic error: value == NULL");
}
ColumnType t = value_->getType();
return (t == COLUMN_TYPE_STRING);
}
/*!
* @brief Return the type of the expression
* @return The expression is a geometry value
*/
bool Expr::isGeometry() const {
if (type_ != VALUE) return false;
if (value_ == NULL) {
GS_THROW_USER_ERROR(GS_ERROR_TQ_CRITICAL_LOGIC_ERROR,
"Internal logic error: value == NULL");
}
ColumnType t = value_->getType();
return (t == COLUMN_TYPE_GEOMETRY);
}
/*!
* @brief Return the type of the expression
* @return The expression is an array
*/
bool Expr::isArrayValue() const {
return (type_ == VALUE && value_ != NULL && value_->isArray());
}
/*!
* @brief Return the type of the expression
* @return The expression is an array
*/
bool Expr::isExprArray() const {
return (type_ == EXPRARRAY);
}
/*!
* @brief Return the type of the expression
* @return The expression is a value
*/
bool Expr::isValue() const {
return (type_ == VALUE);
}
/*!
* @brief Return the type of the expression
* @return The expression is null
*/
bool Expr::isNullValue() const {
return (type_ == NULLVALUE);
}
/*!
* @brief Return the type of the expression
* @return The expression can have null
*/
bool Expr::isNullable() const {
if (isColumn() && columnInfo_->isNotNull()) {
return false;
} else {
return true;
}
}
/*!
* @brief Return the type of the expression
* @return The expression is an expr label
*/
bool Expr::isExprLabel() const {
return (type_ == EXPRLABEL);
}
/*!
* @brief Return the type of the expression
* @return The expression is an aggregation function
*/
bool Expr::isAggregation() const {
return (type_ == AGGREGATION);
}
/*!
* @brief Return the type of the expression
* @return The expression is a selection function
*/
bool Expr::isSelection() const {
return (type_ == SELECTION);
}
/*!
* @brief Return the type of the expression
* @return The expression is a column id
*/
bool Expr::isColumn() const {
return (type_ == COLUMN);
}
/*!
* @brief Return the type of the expression
* @return The expression is a timestamp
*/
bool Expr::isTimestamp() const {
if (type_ != VALUE) return false;
return (resolveValueType() == COLUMN_TYPE_TIMESTAMP);
}
bool Expr::isMicroTimestamp() const {
if (type_ != VALUE) return false;
return (resolveValueType() == COLUMN_TYPE_MICRO_TIMESTAMP);
}
bool Expr::isNanoTimestamp() const {
if (type_ != VALUE) return false;
return (resolveValueType() == COLUMN_TYPE_NANO_TIMESTAMP);
}
bool Expr::isTimestampFamily() const {
if (type_ != VALUE) return false;
return ValueProcessor::isTimestampFamily(resolveValueType());
}
/*!
* @brief Cast an numeric value to another type.
* @return casted value.
*/
template <typename T>
T Expr::castNumericValue() {
if (value_ == NULL) {
GS_THROW_USER_ERROR(GS_ERROR_TQ_CRITICAL_LOGIC_ERROR,
"Internal logic error: value == NULL");
}
if (type_ != VALUE) {
GS_THROW_USER_ERROR(GS_ERROR_TQ_CRITICAL_LOGIC_ERROR,
"Internal logic error: expression is not a value");
}
switch (value_->getType()) {
case COLUMN_TYPE_BYTE:
return static_cast<T>(
*reinterpret_cast<const int8_t *>(value_->data()));
case COLUMN_TYPE_SHORT:
return static_cast<T>(
*reinterpret_cast<const int16_t *>(value_->data()));
case COLUMN_TYPE_INT:
return static_cast<T>(
*reinterpret_cast<const int32_t *>(value_->data()));
case COLUMN_TYPE_LONG:
return static_cast<T>(
*reinterpret_cast<const int64_t *>(value_->data()));
case COLUMN_TYPE_FLOAT:
return static_cast<T>(*reinterpret_cast<const float *>(value_->data()));
case COLUMN_TYPE_DOUBLE:
return static_cast<T>(
*reinterpret_cast<const double *>(value_->data()));
default:
GS_THROW_USER_ERROR(
GS_ERROR_TQ_CONSTRAINT_CANNOT_CAST, "Cannot cast value to numeric");
}
}
/*!
* @brief castNumericValue's specialized version for boolean
* @return Value in expression that casted to bool
*/
bool Expr::castNumericValue() {
if (value_ == NULL) {
GS_THROW_USER_ERROR(GS_ERROR_TQ_CRITICAL_LOGIC_ERROR,
"Internal logic error: value == NULL");
}
if (isNullValue()) {
GS_THROW_USER_ERROR(GS_ERROR_TQ_CRITICAL_LOGIC_ERROR,
"Internal logic error: expression is null");
}
if (type_ != VALUE) {
GS_THROW_USER_ERROR(GS_ERROR_TQ_CRITICAL_LOGIC_ERROR,
"Internal logic error: expression is not a value");
}
switch (value_->getType()) {
case COLUMN_TYPE_BOOL:
return *reinterpret_cast<const bool *>(value_->data());
default:
GS_THROW_USER_ERROR(
GS_ERROR_TQ_CONSTRAINT_CANNOT_CAST, "Cannot cast value to boolean");
}
}
/*!
* @brief Return the value of the expression
* @return The expression as Integer
*/
int Expr::getValueAsInt() {
return castNumericValue<int>();
}
/*!
* @brief Return the value of the expression
* @return The expression as Integer
*/
int64_t Expr::getValueAsInt64() {
return castNumericValue<int64_t>();
}
/*!
* @brief Return a expression type
* @return The type of expression
*/
Expr::Type Expr::getType() {
return type_;
}
ColumnType Expr::resolveValueType() const {
assert(type_ == VALUE);
if (value_ == NULL) {
GS_THROW_USER_ERROR(GS_ERROR_TQ_CRITICAL_LOGIC_ERROR,
"Internal logic error: value == NULL");
}
return value_->getType();
}
/*!
* @brief Return the value of the expression
* @return The expression value as a Double
*/
double Expr::getValueAsDouble() {
return castNumericValue<double>();
}
/*!
* @brief Return the value of the expression
* @return The expression value as a Boolean
*/
bool Expr::getValueAsBool() {
return castNumericValue();
}
/*!
* @brief Stringify numeric value
* @return Stringified value
*/
template <typename T, typename R>
const char *Expr::stringifyValue(TransactionContext &txn) {
util::NormalOStringStream os;
os << R(*reinterpret_cast<const T *>(value_->data()));
return os2char(txn, os);
}
#ifdef _WIN32
/*!
* @brief Stringify numeric value
* @return Stringified value
*/
template <>
const char *Expr::stringifyValue<double, double>(TransactionContext &txn) {
double x = double(*reinterpret_cast<const double *>(value_->data()));
util::NormalOStringStream os;
if (_isnan(x)) {
os << "nan";
}
else if (x == std::numeric_limits<double>::infinity()) {
os << "inf";
}
else if (x == -std::numeric_limits<double>::infinity()) {
os << "-inf";
}
else {
os << x;
}
return os2char(txn, os);
}
#endif
template<typename T>
const char8_t* Expr::stringifyTimestamp(TransactionContext &txn) {
util::DateTime::ZonedOption option = util::DateTime::ZonedOption::create(
TRIM_MILLISECONDS, txn.getTimeZone());
option.asLocalTimeZone_ = USE_LOCAL_TIMEZONE;
const size_t maxSize = util::DateTime::MAX_FORMAT_SIZE;
char8_t *str =static_cast<char8_t*>(
txn.getDefaultAllocator().allocate(maxSize + 1));
const util::DateTime::Formatter formatter =
ValueProcessor::getTimestampFormatter(
*reinterpret_cast<const T*>(value_->data()), option);
const size_t size = formatter(str, maxSize);
str[size] = '\0';
return str;
}
/*!
* @brief Return the value of the expression
* @return The expression value as a string
*/
const char *Expr::getValueAsString(TransactionContext &txn) {
if (isNullValue()) {
return "NULL";
} else
if (type_ == VALUE) {
if (value_ == NULL) {
GS_THROW_USER_ERROR(GS_ERROR_TQ_CRITICAL_LOGIC_ERROR,
"Internal logic error: value == NULL");
}
ColumnType t = value_->getType();
switch (t) {
case COLUMN_TYPE_STRING: {
const char *str = reinterpret_cast<const char *>(value_->data());
size_t size = value_->size();
if (str == NULL || size == 0) return "";
char *allocatedStr = reinterpret_cast<char *>(
txn.getDefaultAllocator().allocate(size + 1));
memcpy(allocatedStr, str, size);
allocatedStr[size] = '\0';
return allocatedStr;
}
case COLUMN_TYPE_BOOL:
if (*reinterpret_cast<const bool *>(value_->data())) {
return "TRUE";
}
else {
return "FALSE";
}
case COLUMN_TYPE_BYTE:
return stringifyValue<int8_t, int16_t>(txn);
case COLUMN_TYPE_SHORT:
return stringifyValue<int16_t, int16_t>(txn);
case COLUMN_TYPE_INT:
return stringifyValue<int32_t, int32_t>(txn);
case COLUMN_TYPE_LONG:
return stringifyValue<int64_t, int64_t>(txn);
case COLUMN_TYPE_FLOAT:
return stringifyValue<float, float>(txn);
case COLUMN_TYPE_DOUBLE:
return stringifyValue<double, double>(txn);
case COLUMN_TYPE_TIMESTAMP:
return stringifyTimestamp<Timestamp>(txn);
case COLUMN_TYPE_MICRO_TIMESTAMP:
return stringifyTimestamp<MicroTimestamp>(txn);
case COLUMN_TYPE_NANO_TIMESTAMP:
return stringifyTimestamp<NanoTimestamp>(txn);
case COLUMN_TYPE_GEOMETRY: {
Geometry *geom = geomCache_;
return geom->getString(txn);
}
default:
break;
}
}
else if (type_ == EXPRARRAY) {
util::NormalOStringStream os;
ExprList::const_iterator it;
if (arglist_ == NULL || arglist_->empty()) {
os << "EXPRARRAY(EMPTY)";
return os2char(txn, os);
}
it = arglist_->begin();
os << "EXPRARRAY(";
do {
if ((*it)->isString()) {
os << '\'' << (*it)->getValueAsString(txn) << '\'';
}
else {
os << (*it)->getValueAsString(txn);
}
++it;
if (it != arglist_->end()) {
os << ", ";
}
else {
break;
}
} while (true);
os << ')';
return os2char(txn, os);
}
else {
if (label_ != NULL) {
return label_;
}
else {
return "NULL";
}
}
GS_THROW_USER_ERROR(GS_ERROR_TQ_CRITICAL_LOGIC_ERROR,
"Internal logic error: cannot create string");
}
/*!
* @brief Return the value of the expression
* @return The expression as a Geometry
*/
Geometry *Expr::getGeometry() {
if (geomCache_ != NULL) {
return geomCache_;
}
else if (isNullValue()) {
GS_THROW_USER_ERROR(GS_ERROR_TQ_CRITICAL_LOGIC_ERROR,
"Internal logic error: expression is null");
}
else {
GS_THROW_USER_ERROR(GS_ERROR_TQ_CRITICAL_LOGIC_ERROR,
"Internal logic error: getGeometry() is called in invalid "
"context.");
}
}
/*!
* @brief Return the value of the expression
* @return The expression as Expression list
*/
const ExprList &Expr::getArgList() {
if (type_ == EXPR && arglist_ != NULL) {
return *arglist_;
}
GS_THROW_USER_ERROR(GS_ERROR_TQ_CRITICAL_LOGIC_ERROR,
"Internal logic error: getArgList() is called in invalid context.");
}
/*!
* @brief Return the expression of an array element
* @param txn The transaction context
* @param txn Object manager
* @param idx element index
* @return The expression of the element
*/
Expr *Expr::getArrayElement(
TransactionContext &txn, ObjectManagerV4 &objectManager, AllocateStrategy &strategy, size_t idx) {
if (type_ == VALUE) {
assert(value_ != NULL);
if (idx >= value_->getArrayLength(txn, objectManager, strategy)) {
GS_THROW_USER_ERROR(GS_ERROR_TQ_CONSTRAINT_ARRAY_OUT_OF_RANGE,
"Specified index is out of range.");
}
const uint8_t *data;
uint32_t size;
value_->getArrayElement(
txn, objectManager, strategy, static_cast<uint32_t>(idx), data, size);
switch (value_->getType()) {
case COLUMN_TYPE_STRING_ARRAY:
return Expr::newStringValue(
reinterpret_cast<const char *>(data), size, txn);
case COLUMN_TYPE_BOOL_ARRAY:
return Expr::newBooleanValue(
*reinterpret_cast<const bool *>(data), txn);
case COLUMN_TYPE_BYTE_ARRAY:
return Expr::newNumericValue(
*reinterpret_cast<const int8_t *>(data), txn);
case COLUMN_TYPE_SHORT_ARRAY:
return Expr::newNumericValue(
*reinterpret_cast<const int16_t *>(data), txn);
case COLUMN_TYPE_INT_ARRAY:
return Expr::newNumericValue(
*reinterpret_cast<const int32_t *>(data), txn);
case COLUMN_TYPE_LONG_ARRAY:
return Expr::newNumericValue(
*reinterpret_cast<const int64_t *>(data), txn);
case COLUMN_TYPE_FLOAT_ARRAY:
return Expr::newNumericValue(
*reinterpret_cast<const float *>(data), txn);
case COLUMN_TYPE_DOUBLE_ARRAY:
return Expr::newNumericValue(
*reinterpret_cast<const double *>(data), txn);
case COLUMN_TYPE_TIMESTAMP_ARRAY:
return Expr::newTimestampValue(
*reinterpret_cast<const Timestamp*>(data),txn);
default:
GS_THROW_USER_ERROR(GS_ERROR_TQ_CRITICAL_LOGIC_ERROR,
"Internal logic error: getArrayElement() is called with "
"invalid array type.");
break;
}
}
GS_THROW_USER_ERROR(GS_ERROR_TQ_CRITICAL_LOGIC_ERROR,
"Internal logic error: getArrayElement() is called in invalid "
"context.");
}
/*!
* @brief Return the length of array
* @param txn The transaction context
* @param txn Object manager
* @return The length of array
*/
size_t Expr::getArrayLength(
TransactionContext &txn, ObjectManagerV4 &objectManager, AllocateStrategy &strategy) const {
if (type_ == VALUE) {
assert(value_ != NULL);
return value_->getArrayLength(txn, objectManager, strategy);
}
else if (type_ == EXPRARRAY && arglist_ != NULL) {
return arglist_->size();
}
else {
GS_THROW_USER_ERROR(GS_ERROR_TQ_CRITICAL_LOGIC_ERROR,
"Internal logic error: getArrayLength() is called in invalid "
"context.");
}
}
/*!
* @brief Return the timestamp in a expression structure
* @return The timestamp value
*/
Timestamp Expr::getTimeStamp() {
if (value_ == NULL) {
GS_THROW_USER_ERROR(GS_ERROR_TQ_CRITICAL_LOGIC_ERROR,
"Internal logic error: value == NULL");
}
if (isNullValue()) {
GS_THROW_USER_ERROR(GS_ERROR_TQ_CRITICAL_LOGIC_ERROR,
"Internal logic error: expression is null");
}
try {
return ValueProcessor::getTimestamp(value_->getType(), value_->data());
}
catch (UserException &e) {
GS_RETHROW_USER_ERROR_CODED(
GS_ERROR_TQ_CONSTRAINT_INVALID_ARGUMENT_TYPE, e,
"Invalid datatypes: argument is not a timestamp value");
}
}
NanoTimestamp Expr::getNanoTimestamp() {
if (value_ == NULL) {
GS_THROW_USER_ERROR(GS_ERROR_TQ_CRITICAL_LOGIC_ERROR,
"Internal logic error: value == NULL");
}
if (isNullValue()) {
GS_THROW_USER_ERROR(GS_ERROR_TQ_CRITICAL_LOGIC_ERROR,
"Internal logic error: expression is null");
}
try {
return ValueProcessor::getNanoTimestamp(
value_->getType(), value_->data());
}
catch (UserException &e) {
GS_RETHROW_USER_ERROR_CODED(
GS_ERROR_TQ_CONSTRAINT_INVALID_ARGUMENT_TYPE, e,
"Invalid datatypes: argument is not a timestamp value");
}
}
/*!
* @brief Make a deep copy of an expression
* @param txn The transaction context
* @param txn Object manager
* @return Duplicated expression
*/
Expr *Expr::dup(TransactionContext &txn, ObjectManagerV4 &objectManager, AllocateStrategy &strategy) {
Expr *e = NULL;
if (type_ == NULLVALUE) {
e = Expr::newNullValue(txn);
} else
if (type_ == VALUE) {
assert(value_ != NULL);
if (!value_->isArray()) {
switch (value_->getType()) {
case COLUMN_TYPE_STRING:
e = Expr::newStringValue(
reinterpret_cast<const char *>(value_->data()),
value_->size(), txn);
break;
case COLUMN_TYPE_BOOL:
e = Expr::newBooleanValue(
*reinterpret_cast<const bool *>(value_->data()), txn);
break;
case COLUMN_TYPE_BYTE:
e = Expr::newNumericValue(
*reinterpret_cast<const int8_t *>(value_->data()), txn);
break;
case COLUMN_TYPE_SHORT:
e = Expr::newNumericValue(
*reinterpret_cast<const int16_t *>(value_->data()), txn);
break;
case COLUMN_TYPE_INT:
e = Expr::newNumericValue(
*reinterpret_cast<const int32_t *>(value_->data()), txn);
break;
case COLUMN_TYPE_LONG:
e = Expr::newNumericValue(
*reinterpret_cast<const int64_t *>(value_->data()), txn);
break;
case COLUMN_TYPE_FLOAT:
e = Expr::newNumericValue(
*reinterpret_cast<const float *>(value_->data()), txn);
break;
case COLUMN_TYPE_DOUBLE:
e = Expr::newNumericValue(
*reinterpret_cast<const double *>(value_->data()), txn);
break;
case COLUMN_TYPE_TIMESTAMP:
e = Expr::newTimestampValue(
*reinterpret_cast<const Timestamp *>(value_->data()), txn);
break;
case COLUMN_TYPE_MICRO_TIMESTAMP:
e = Expr::newTimestampValue(
*reinterpret_cast<const MicroTimestamp *>(value_->data()), txn);
break;
case COLUMN_TYPE_NANO_TIMESTAMP:
e = Expr::newTimestampValue(
*reinterpret_cast<const NanoTimestamp *>(value_->data()), txn);
break;
case COLUMN_TYPE_GEOMETRY: {
Geometry *geom = getGeometry();
e = Expr::newGeometryValue(geom, txn);
} break;
default:
GS_THROW_USER_ERROR(GS_ERROR_TQ_CRITICAL_LOGIC_ERROR,
"Internal logic error: cannot determine column type.");
}
}
else {
Value *av;
av = QP_NEW Value();
av->copy(txn, objectManager, strategy, *value_);
e = Expr::newArrayValue(av, txn);
}
}
else {
e = QP_NEW Expr(txn);
e->type_ = type_;
e->op_ = op_;
if (label_) {
size_t len = strlen(label_) + 1;
e->label_ =
static_cast<char *>(txn.getDefaultAllocator().allocate(len));
memcpy(e->label_, label_, len);
}
assert(buf_ == NULL);
assert(value_ == NULL);
e->buf_ = NULL;
e->value_ = NULL;
e->columnInfo_ = columnInfo_;
e->columnId_ = columnId_;
e->columnType_ = columnType_;
e->functor_ = functor_;
e->geomCache_ = geomCache_;
if (arglist_ != NULL) {
e->arglist_ = QP_NEW ExprList(txn.getDefaultAllocator());
for (ExprList::const_iterator it = arglist_->begin();
it != arglist_->end(); it++) {
e->arglist_->insert(
e->arglist_->end(), (*it)->dup(txn, objectManager, strategy));
}
}
}
return e;
}
/*!
* @brief Common constructor
*/
void Expr::Init() {
type_ = VALUE;
label_ = NULL;
arglist_ = NULL;
value_ = NULL;
buf_ = NULL;
columnInfo_ = NULL;
columnId_ = 0;
functor_ = NULL;
columnType_ = COLUMN_TYPE_WITH_BEGIN;
geomCache_ = NULL;
}
/*!
* @brief ctor
*
* @param v Value
* @param txn The transaction context
*/
Expr::Expr(bool v, TransactionContext &txn) {
Init();
type_ = VALUE;
value_ = QP_NEW Value(v);
}
/*!
* @brief ctor
*
* @param v Value
* @param txn The transaction context
*/
Expr::Expr(int8_t v, TransactionContext &txn) {
Init();
type_ = VALUE;
value_ = QP_NEW Value(v);
}
/*!
* @brief ctor
*
* @param v Value
* @param txn The transaction context
*/
Expr::Expr(int16_t v, TransactionContext &txn) {
Init();
type_ = VALUE;
value_ = QP_NEW Value(v);
}
/*!
* @brief ctor
*
* @param v Value
* @param txn The transaction context
*/
Expr::Expr(int32_t v, TransactionContext &txn) {
Init();
type_ = VALUE;
value_ = QP_NEW Value(v);
}
/*!
* @brief ctor
*
* @param v Value
* @param txn The transaction context
* @param isTimestamp The int64 value is a timestamp
*/
Expr::Expr(int64_t v, TransactionContext &txn, bool isTimestamp) {
Init();
type_ = VALUE;
value_ = QP_NEW Value(v);
if (isTimestamp) {
value_->setTimestamp(v);
}
}
/*!
* @brief ctor
*
* @param v Value
* @param txn The transaction context
*/
Expr::Expr(float v, TransactionContext &txn) {
Init();
type_ = VALUE;
value_ = QP_NEW Value(v);
}
/*!
* @brief ctor
*
* @param v Value
* @param txn The transaction context
*/
Expr::Expr(double v, TransactionContext &txn) {
Init();
type_ = VALUE;
value_ = QP_NEW Value(v);
}
Expr::Expr(const MicroTimestamp &v, TransactionContext &txn) {
Init();
type_ = VALUE;
value_ = QP_NEW Value(v);
}
Expr::Expr(const NanoTimestamp &v, TransactionContext &txn) {
Init();
type_ = VALUE;
value_ = QP_NEW Value(v);
}
/*!
* @brief ctor
*
* @param s String value
* @param txn The transaction context
* @param isLabel The string is a expression label
* @param needUnescape add escape character
*/
Expr::Expr(
const char *s, TransactionContext &txn, bool isLabel, bool needUnescape) {
Init();
if (isLabel) {
size_t len = strlen(s) + 1;
type_ = EXPRLABEL;
label_ = static_cast<char *>(txn.getDefaultAllocator().allocate(len));
memcpy(label_, s, len);
}
else {
util::String str(s, QP_ALLOCATOR);
if (needUnescape) {
unescape(str, '\'');
}
type_ = VALUE;
buf_ = QP_NEW util::XArray<uint8_t>(txn.getDefaultAllocator());
if (str.empty()) {
value_ =
QP_NEW Value(txn.getDefaultAllocator(), const_cast<char *>(""));
}
else {
value_ = QP_NEW Value(
txn.getDefaultAllocator(), const_cast<char *>(str.c_str()));
}
}
}
/*!
* @brief ctor
*
* @param s String value
* @param len String length
* @param txn The transaction context
* @param isLabel The string is a expression label
* @param needUnescape add escape character
*/
Expr::Expr(const char *s, size_t len, TransactionContext &txn, bool isLabel,
bool needUnescape) {
Init();
if (isLabel) {
type_ = EXPRLABEL;
label_ =
static_cast<char *>(txn.getDefaultAllocator().allocate(len + 1));
memcpy(label_, s, len);
label_[len] = '\0';
}
else {
util::String str(s, len, QP_ALLOCATOR);
if (needUnescape) {
unescape(str, '\'');
}
type_ = VALUE;
buf_ = QP_NEW util::XArray<uint8_t>(txn.getDefaultAllocator());
if (str.empty()) {
value_ =
QP_NEW Value(txn.getDefaultAllocator(), const_cast<char *>(""));
}
else {
value_ = QP_NEW Value(
txn.getDefaultAllocator(), const_cast<char *>(str.c_str()));
}
}
}
/*!
* @brief ctor of a column expression
*
* @param name Column name
* @param txn The transaction context
* @param columnId Column ID
* @param cInfo Column info
*/
Expr::Expr(const char *name, TransactionContext &txn, uint32_t columnId,
ColumnInfo *cInfo) {
Init();
type_ = COLUMN;
size_t len = strlen(name) + 1;
label_ = static_cast<char *>(txn.getDefaultAllocator().allocate(len));
memcpy(label_, name, len);
columnInfo_ = cInfo;
columnId_ = columnId;
if (cInfo != NULL) {
columnType_ = cInfo->getColumnType();
}
}
/*!
* @brief Ctor of binary operation
*
* @param op Operation
* @param arg1 argument1
* @param arg2 argument2
* @param txn The transaction context
*/
Expr::Expr(Operation op, Expr *arg1, Expr *arg2, TransactionContext &txn) {
Init();
type_ = EXPR;
op_ = op;
arglist_ = QP_NEW ExprList(txn.getDefaultAllocator());
arglist_->push_back(arg1);
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