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#include "stdafx.h"
#include "Schema.h"
#include "Core/Join.h"
namespace sql {
Schema::Schema(Str *tableName, Array<Column *> *columns)
: tableName(tableName), columns(columns) {}
Schema::Schema(Str *tableName, Array<Column *> *columns, Array<Index *> *indices)
: tableName(tableName), columns(columns), index(indices) {}
Array<Schema::Index *> *Schema::indices() const {
if (index)
return index;
else
return new (this) Array<Index *>();
}
void Schema::toS(StrBuf *to) const {
*to << tableName << S(": {\n");
to->indent();
for (Nat i = 0; i < columns->count(); i++) {
*to << columns->at(i) << S("\n");
}
if (index) {
for (Nat i = 0; i < index->count(); i++) {
*to << index->at(i) << S("\n");
}
}
to->dedent();
*to << S("}");
}
void Schema::toSQL(QueryStrBuilder *to) const {
to->put(S("CREATE TABLE "));
to->name(tableName);
to->put(S(" ("));
Array<Str *> *pk = new (this) Array<Str *>();
for (Nat i = 0; i < columns->count(); i++) {
Column *col = columns->at(i);
if (col->attributes & primaryKey)
pk->push(col->name);
}
for (Nat i = 0; i < columns->count(); i++) {
if (i > 0)
to->put(S(", "));
Column *col = columns->at(i);
col->toSQL(to);
// We need to supply PK info here for implicit autoincrement to work on some databases (e.g. SQLite).
if (pk->count() == 1 && (col->attributes & primaryKey))
to->put(S(" PRIMARY KEY"));
}
// Multiple primary keys go at the end.
if (pk->count() > 1) {
to->put(S(", PRIMARY KEY("));
to->name(pk->at(0));
for (Nat i = 1; i < pk->count(); i++) {
to->put(S(", "));
to->name(pk->at(i));
}
to->put(S(")"));
}
to->put(S(")"));
}
Schema::Column::Column(Str *name, QueryType type)
: name(name), type(type), attributes(none) {}
Schema::Column::Column(Str *name, QueryType type, Attributes attrs)
: name(name), type(type), attributes(attrs) {}
void Schema::Column::toS(StrBuf *to) const {
*to << name << S(" ") << type;
sql::toSQL(to, attributes);
if (defaultValue)
*to << S(" DEFAULT ") << defaultValue;
if (unknown)
*to << S(" unknown: ") << unknown;
}
void Schema::Column::toSQL(QueryStrBuilder *to) const {
to->name(name);
to->put(S(" "));
to->type(type);
sql::toSQL(to, attributes & ~primaryKey);
if (defaultValue) {
to->put(S(" DEFAULT "));
to->put(defaultValue);
}
}
Schema::Index::Index(Str *name, Array<Str *> *columns)
: name(name), columns(columns) {}
void Schema::Index::toS(StrBuf *to) const {
*to << S("INDEX ON ") << name << S("(") << join(columns, S(", ")) << S(")");
}
void Schema::Index::toSQL(QueryStrBuilder *to, Str *table) const {
to->put(S("CREATE INDEX "));
to->name(name);
to->put(S(" ON "));
to->name(table);
to->put(S("("));
for (Nat i = 0; i < columns->count(); i++) {
if (i > 0)
to->put(S(", "));
to->name(columns->at(i));
}
to->put(S(")"));
}
void toSQL(QueryStrBuilder *to, Schema::Attributes attributes) {
if (attributes & Schema::primaryKey)
to->put(S(" PRIMARY KEY"));
if (attributes & Schema::notNull)
to->put(S(" NOT NULL"));
if (attributes & Schema::unique)
to->put(S(" UNIQUE"));
if (attributes & Schema::autoIncrement) {
to->put(S(" "));
to->autoIncrement();
}
}
void toSQL(StrBuf *to, Schema::Attributes attributes) {
if (attributes & Schema::primaryKey)
*to <<S (" PRIMARY KEY");
if (attributes & Schema::notNull)
*to << S(" NOT NULL");
if (attributes & Schema::unique)
*to << S(" UNIQUE");
if (attributes & Schema::autoIncrement)
*to << S(" AUTOINCREMENT");
}
Str *toSQL(EnginePtr e, Schema::Attributes attrs) {
StrBuf *out = new (e.v) StrBuf();
toSQL(out, attrs);
return out->toS();
}
}
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