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#include "sqliteschema.h"
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#include "../database.h"
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#include <QSqlRecord>
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#include <QSqlResult>
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#include "sqlitequerybuilder.h"
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using namespace CuteEntityManager;
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SqliteSchema::SqliteSchema(QSharedPointer<Database> database) : Schema(database) {
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this->queryBuilder = QSharedPointer<QueryBuilder>(new SqliteQueryBuilder(QSharedPointer<Schema>(this), database));
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}
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SqliteSchema::~SqliteSchema() {
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}
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QHash<QString, QString> *SqliteSchema::getTypeMap() {
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if (this->typeMap.data()->empty()) {
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this->typeMap.data()->insert(TYPE_SMALLINT, "tinyint");
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this->typeMap.data()->insert(TYPE_BOOLEAN, "boolean");
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this->typeMap.data()->insert(TYPE_SMALLINT, "smallint");
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this->typeMap.data()->insert(TYPE_INTEGER, "int");
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this->typeMap.data()->insert(TYPE_BIGINT, "bigint");
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this->typeMap.data()->insert(TYPE_FLOAT, "float");
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this->typeMap.data()->insert(TYPE_DOUBLE, "double");
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this->typeMap.data()->insert(TYPE_FLOAT, "real");
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this->typeMap.data()->insert(TYPE_DECIMAL, "decimal");
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this->typeMap.data()->insert(TYPE_TEXT, "text");
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this->typeMap.data()->insert(TYPE_STRING, "varchar");
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this->typeMap.data()->insert(TYPE_CHAR, "char");
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this->typeMap.data()->insert(TYPE_BINARY, "blob");
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this->typeMap.data()->insert(TYPE_DATETIME, "datetime");
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this->typeMap.data()->insert(TYPE_DATE, "date");
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this->typeMap.data()->insert(TYPE_TIME, "time");
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this->typeMap.data()->insert(TYPE_TIMESTAMP, "timestamp");
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}
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return this->typeMap.data();
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}
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QStringList SqliteSchema::findTableNames(QString schema) {
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auto l = QStringList();
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QString sql = "SELECT DISTINCT tbl_name FROM sqlite_master WHERE tbl_name<>'sqlite_sequence' ORDER BY tbl_name";
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auto q = this->database.data()->getQuery();
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q.prepare(sql);
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this->database.data()->select(q);
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while (q.next()) {
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l.append(q.value(0).toString());
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}
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return l;
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}
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QHash<QString, QStringList> SqliteSchema::findUniqueIndexes(const QSharedPointer<TableSchema> &table) {
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QHash<QString, QStringList> uniqueIndexes = QHash<QString, QStringList>();
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QSqlQuery q = this->database.data()->getQuery();
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q.setForwardOnly(true);
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q.exec("PRAGMA index_list(" + this->quoteSimpleTableName(table->getName()) + ')');
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while (q.next()) {
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QString indexName = q.value("name").toString();
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QSqlQuery q2 = this->database.data()->getQuery();
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q2.setForwardOnly(true);
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if (q.value("unique").toBool()) {
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q2.exec("PRAGMA index_info(" + this->quoteSimpleTableName(indexName) + ")");
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QStringList indexInfo = QStringList();
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while (q2.next()) {
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indexInfo.append(q2.value("name").toString());
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}
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uniqueIndexes.insert(indexName, indexInfo);
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}
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}
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return uniqueIndexes;
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}
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void SqliteSchema::findConstraints(const QSharedPointer<TableSchema> &ts) {
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QSqlQuery q = this->database.data()->getQuery();
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q.setForwardOnly(true);
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q.exec("PRAGMA foreign_key_list(" + this->quoteSimpleTableName(ts.data()->getName()) + ')');
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auto foreignKeys = ts.data()->getRelations();
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while (q.next()) {
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bool ok;
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int id = q.value("id").toInt(&ok);
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if (ok) {
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auto rel = new QSqlRelation(q.value("table").toString(), q.value("from").toString(), q.value("to").toString());
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auto ptr = QSharedPointer<QSqlRelation>(rel);
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foreignKeys.insert(QString::number(id), ptr);
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}
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}
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ts.data()->setRelations(foreignKeys);
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}
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bool SqliteSchema::findColumns(const QSharedPointer<TableSchema> &ts) {
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QSqlQuery q = this->database.data()->getQuery();
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q.setForwardOnly(true);
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q.exec("SELECT * FROM " + this->quoteSimpleTableName(ts.data()->getName()) + " LIMIT 0");
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QHash<QString, QSharedPointer<QSqlField>> columns = QHash<QString, QSharedPointer<QSqlField>>();
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auto rec = q.record();
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int count = rec.count();
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if (count == 0) {
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return false;
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}
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for (int var = 0; var < count; ++var) {
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QSqlField f = rec.field(var);
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columns.insert(f.name(), QSharedPointer<QSqlField>(new QSqlField(f)));
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}
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ts.data()->setColumns(columns);
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return true;
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}
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QSharedPointer<TableSchema> SqliteSchema::loadTableSchema(QString name) {
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auto table = new TableSchema();
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auto ptr = QSharedPointer<TableSchema>(table);
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table->setName(name);
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table->setFullName(name);
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if (this->findColumns(ptr)) {
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this->findConstraints(ptr);
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} else {
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ptr.clear();
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}
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return ptr;
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}
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