/// <summary>
/// Run a query given by its query spec, only returning results from the selected page.
/// </summary>
/// <param name="querySpec"></param>
/// <param name="pageIndex"></param>
/// <returns></returns>
public JArray Query(QuerySpec querySpec, int pageIndex)
{
lock (smartlock)
{
QuerySpec.SmartQueryType qt = querySpec.QueryType;
var results = new JArray();
string sql = ConvertSmartSql(querySpec.SmartSql);
int offsetRows = querySpec.PageSize * pageIndex;
int numberRows = querySpec.PageSize;
string limit = offsetRows + "," + numberRows;
using (ISQLiteStatement statement = DBHelper.GetInstance(DatabasePath)
.LimitRawQuery(sql, limit, querySpec.getArgs()))
{
if (statement.DataCount > 0)
{
do
{
if (qt == QuerySpec.SmartQueryType.Smart)
{
results.Add(GetDataFromRow(statement));
}
else
{
results.Add(JObject.Parse(GetObject(statement, 0).ToString()));
}
} while (statement.Step() == SQLiteResult.ROW);
}
statement.ResetAndClearBindings();
}
return(results);
}
}
private IndexSpec[] GetIndexSpecsFromDb(String soupName)
{
ISQLiteStatement statement = Query(SmartStore.SoupIndexMapTable,
new[] { SmartStore.PathCol, SmartStore.ColumnNameCol, SmartStore.ColumnTypeCol }, null,
null, SmartStore.SoupNamePredicate, soupName);
if (statement.DataCount < 1)
{
throw new SmartStoreException(String.Format("{0} does not have any indices", soupName));
}
var indexSpecs = new List <IndexSpec>();
do
{
String path = statement.GetText(SmartStore.PathCol);
String columnName = statement.GetText(SmartStore.ColumnNameCol);
var columnType = new SmartStoreType(statement.GetText(SmartStore.ColumnTypeCol));
indexSpecs.Add(new IndexSpec(path, columnType, columnName));
} while (statement.Step() == SQLiteResult.ROW);
statement.ResetAndClearBindings();
return(indexSpecs.ToArray());
}
