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293 lines (242 loc) · 5.74 KB
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#include "statements.h"
namespace hsql {
// SQLStatement
SQLStatement::SQLStatement(StatementType type) :
type_(type) {};
SQLStatement::~SQLStatement() {}
StatementType SQLStatement::type() const {
return type_;
}
// ColumnDefinition
ColumnDefinition::ColumnDefinition(char* name, DataType type) :
name(name),
type(type) {};
ColumnDefinition::~ColumnDefinition() {
free(name);
}
// CreateStatemnet
CreateStatement::CreateStatement(CreateType type) :
SQLStatement(kStmtCreate),
type(type),
ifNotExists(false),
filePath(NULL),
tableName(NULL),
columns(NULL),
viewColumns(NULL),
select(NULL) {};
CreateStatement::~CreateStatement() {
free(filePath);
free(tableName);
delete select;
if (columns != NULL) {
for (ColumnDefinition* def : *columns) {
delete def;
}
delete columns;
}
if (viewColumns != NULL) {
for (char* column : *viewColumns) {
free(column);
}
delete viewColumns;
}
}
// DeleteStatement
DeleteStatement::DeleteStatement() :
SQLStatement(kStmtDelete),
tableName(NULL),
expr(NULL) {};
DeleteStatement::~DeleteStatement() {
free(tableName);
delete expr;
}
// DropStatament
DropStatement::DropStatement(EntityType type) :
SQLStatement(kStmtDrop),
type(type),
name(NULL) {}
DropStatement::~DropStatement() {
free(name);
}
// ExecuteStatement
ExecuteStatement::ExecuteStatement() :
SQLStatement(kStmtExecute),
name(NULL),
parameters(NULL) {}
ExecuteStatement::~ExecuteStatement() {
free(name);
if (parameters != NULL) {
for (Expr* param : *parameters) {
delete param;
}
delete parameters;
}
}
// ImportStatement
ImportStatement::ImportStatement(ImportType type) :
SQLStatement(kStmtImport),
type(type),
filePath(NULL),
tableName(NULL) {};
ImportStatement::~ImportStatement() {
delete filePath;
delete tableName;
}
// InsertStatement
InsertStatement::InsertStatement(InsertType type) :
SQLStatement(kStmtInsert),
type(type),
tableName(NULL),
columns(NULL),
values(NULL),
select(NULL) {}
InsertStatement::~InsertStatement() {
free(tableName);
delete select;
if (columns != NULL) {
for (char* column : *columns) {
free(column);
}
delete columns;
}
if (values != NULL) {
for (Expr* expr : *values) {
delete expr;
}
delete values;
}
}
// PrepareStatement
PrepareStatement::PrepareStatement() :
SQLStatement(kStmtPrepare),
name(NULL),
query(NULL) {}
PrepareStatement::~PrepareStatement() {
delete query;
free(name);
}
void PrepareStatement::setPlaceholders(std::vector<void*> ph) {
for (void* e : ph) {
if (e != NULL)
placeholders.push_back((Expr*) e);
}
// Sort by col-id
std::sort(placeholders.begin(), placeholders.end(), [](Expr * i, Expr * j) -> bool { return (i->ival < j->ival); });
// Set the placeholder id on the Expr. This replaces the previously stored column id
for (uintmax_t i = 0; i < placeholders.size(); ++i) placeholders[i]->ival = i;
}
// SelectStatement.h
// OrderDescription
OrderDescription::OrderDescription(OrderType type, Expr* expr) :
type(type),
expr(expr) {}
OrderDescription::~OrderDescription() {
delete expr;
}
// LimitDescription
LimitDescription::LimitDescription(int64_t limit, int64_t offset) :
limit(limit),
offset(offset) {}
// GroypByDescription
GroupByDescription::GroupByDescription() :
columns(NULL),
having(NULL) {}
GroupByDescription::~GroupByDescription() {
delete having;
if (columns != NULL) {
for (Expr* expr : *columns) {
delete expr;
}
delete columns;
}
}
// SelectStatement
SelectStatement::SelectStatement() :
SQLStatement(kStmtSelect),
fromTable(NULL),
selectDistinct(false),
selectList(NULL),
whereClause(NULL),
groupBy(NULL),
unionSelect(NULL),
order(NULL),
limit(NULL) {};
SelectStatement::~SelectStatement() {
delete fromTable;
delete whereClause;
delete groupBy;
delete unionSelect;
delete limit;
// Delete each element in the select list.
if (selectList != NULL) {
for (Expr* expr : *selectList) {
delete expr;
}
delete selectList;
}
if (order != NULL) {
for (OrderDescription* desc : *order) {
delete desc;
}
delete order;
}
}
// UpdateStatement
UpdateStatement::UpdateStatement() :
SQLStatement(kStmtUpdate),
table(NULL),
updates(NULL),
where(NULL) {}
UpdateStatement::~UpdateStatement() {
delete table;
delete where;
if (updates != NULL) {
for (UpdateClause* update : *updates) {
free(update->column);
delete update->value;
delete update;
}
delete updates;
}
}
// TableRef
TableRef::TableRef(TableRefType type) :
type(type),
schema(NULL),
name(NULL),
alias(NULL),
select(NULL),
list(NULL),
join(NULL) {}
TableRef::~TableRef() {
free(schema);
free(name);
free(alias);
delete select;
delete join;
if (list != NULL) {
for (TableRef* table : *list) {
delete table;
}
delete list;
}
}
bool TableRef::hasSchema() {
return schema != NULL;
}
char* TableRef::getName() {
if (alias != NULL) return alias;
else return name;
}
// JoinDefinition
JoinDefinition::JoinDefinition() :
left(NULL),
right(NULL),
condition(NULL),
type(kJoinInner) {}
JoinDefinition::~JoinDefinition() {
delete left;
delete right;
delete condition;
}
} // namespace hsql