@SuppressWarnings("unchecked")
public <T> T findFirst(Selector selector) throws DbException {
if (!tableIsExist(selector.getEntityType())) return null;
String sql = selector.limit(1).toString();
long seq = CursorUtils.FindCacheSequence.getSeq();
findTempCache.setSeq(seq);
Object obj = findTempCache.get(sql);
if (obj != null) {
return (T) obj;
}
Cursor cursor = execQuery(sql);
if (cursor != null) {
try {
if (cursor.moveToNext()) {
T entity = (T) CursorUtils.getEntity(this, cursor, selector.getEntityType(), seq);
findTempCache.put(sql, entity);
return entity;
}
} catch (Throwable e) {
throw new DbException(e);
} finally {
IOUtils.closeQuietly(cursor);
}
}
return null;
}
@SuppressWarnings("unchecked")
public <T> List<T> findAll(Selector selector) throws DbException {
if (!tableIsExist(selector.getEntityType())) return null;
String sql = selector.toString();
long seq = CursorUtils.FindCacheSequence.getSeq();
findTempCache.setSeq(seq);
Object obj = findTempCache.get(sql);
if (obj != null) {
return (List<T>) obj;
}
List<T> result = new ArrayList<T>();
Cursor cursor = execQuery(sql);
if (cursor != null) {
try {
while (cursor.moveToNext()) {
T entity = (T) CursorUtils.getEntity(this, cursor, selector.getEntityType(), seq);
result.add(entity);
}
findTempCache.put(sql, result);
} catch (Throwable e) {
throw new DbException(e);
} finally {
IOUtils.closeQuietly(cursor);
}
}
return result;
}
@SuppressWarnings("unchecked")
public <T> T findById(Class<T> entityType, Object idValue) throws DbException {
if (!tableIsExist(entityType)) return null;
Table table = Table.get(this, entityType);
Selector selector = Selector.from(entityType).where(table.id.getColumnName(), "=", idValue);
String sql = selector.limit(1).toString();
long seq = CursorUtils.FindCacheSequence.getSeq();
findTempCache.setSeq(seq);
Object obj = findTempCache.get(sql);
if (obj != null) {
return (T) obj;
}
Cursor cursor = execQuery(sql);
if (cursor != null) {
try {
if (cursor.moveToNext()) {
T entity = (T) CursorUtils.getEntity(this, cursor, entityType, seq);
findTempCache.put(sql, entity);
return entity;
}
} catch (Throwable e) {
throw new DbException(e);
} finally {
IOUtils.closeQuietly(cursor);
}
}
return null;
}