public IEnumerator<IDictionary<String, Object>> ExecuteSelectQuery(DatabaseDescriptor databaseDescriptor, EntityDescriptor entityDescriptor, String query)
{
#if XAMARIN
SQLitePCL.sqlite3_stmt statement = SQLite3.Prepare2(sqliteDatabase.Handle, query);
#elif WINDOWS
List<SQLiteQueryRow> statement = null;
#endif
try
{
#if XAMARIN
statement = SQLite3.Prepare2(sqliteDatabase.Handle, query);
#elif WINDOWS
statement = sqliteDatabase.Query2(query);
#endif
}
catch (System.Exception exception)
{
if (sqliteDatabase.IsInTransaction)
{
sqliteDatabase.Rollback();
}
Log.Log.Error(typeof(Database).FullName, "ExecuteSelectQuery", "Exception caught while executing the select query, QUERY: " + query);
throw new DatabaseException(typeof(Database).FullName, "ExecuteSelectQuery", exception.Message);
}
List<Dictionary<String, Object>> tuples = new List<Dictionary<String, Object>>();
#if XAMARIN
SQLite3.Result result;
while ((result = SQLite3.Step (statement)) == SQLite3.Result.Row)
{
IDictionary<String, Object> tuple = new Dictionary<String, Object>();
String stmtResult = result.ToString ();
//string[] names = SQLite3.ColType.GetNames ();
//string[] values = SQLite3.ColType.GetValues ();
int columnsCount = SQLite3.ColumnCount (statement);
for(int i = 0;i < columnsCount;i++)
{
String columnName = SQLite3.ColumnName (statement, i);
SQLite3.ColType columnType = SQLite3.ColumnType (statement, i);
Object columnValue = SQLite3.ColumnText (statement, i);
bool isString = false;
bool isLong = false;
bool isFloat = false;
bool isBlob = false;
if (columnType == SQLite3.ColType.Text)
{
isString = true;
}
else if (columnType == SQLite3.ColType.Integer)
{
isLong = true;
}
else if(columnType == SQLite3.ColType.Float)
{
isFloat = true;
}
else if(columnType == SQLite3.ColType.Blob)
{
isBlob = true;
}
else if(columnType == SQLite3.ColType.Null)
{
}
if (isString)
{
if (entityDescriptor != null)
{
EntityDescriptor.Attribute attribute = entityDescriptor.GetAttributeBasedOnColumnName(columnName);
if (attribute != null)
{
if (attribute.GetType().Equals(IDataTypeHandler.CSHARP_STRING_DATA_TYPE, StringComparison.OrdinalIgnoreCase))
{
tuple.Add(columnName, (String)columnValue);
}
else if (attribute.GetType().Equals(IDataTypeHandler.CSHARP_BOOLEAN_PRIMITIVE_DATA_TYPE, StringComparison.OrdinalIgnoreCase))
{
tuple.Add(columnName, columnValue.Equals(Boolean.TrueString.ToString()) ? true : false);
}
else if (attribute.GetType().Equals(IDataTypeHandler.CSHARP_BOOLEAN_DATA_TYPE, StringComparison.OrdinalIgnoreCase))
{
tuple.Add(columnName, columnValue.Equals(Boolean.TrueString.ToString()) ? Boolean.TrueString : Boolean.FalseString);
}
else if (attribute.GetType().Equals(IDataTypeHandler.JAVASCRIPT_STRING_DATA_TYPE, StringComparison.OrdinalIgnoreCase))
{
tuple.Add(columnName, (String)columnValue);
}
}
else
{
tuple.Add(columnName, columnValue);
}
}
else
{
tuple.Add(columnName, columnValue);
}
}
else if (isLong)
{
if (entityDescriptor != null)
{
EntityDescriptor.Attribute attribute = entityDescriptor.GetAttributeBasedOnColumnName(columnName);
if (attribute != null)
{
if (attribute.GetType().Equals(IDataTypeHandler.JAVASCRIPT_NUMBER_DATA_TYPE, StringComparison.OrdinalIgnoreCase))
{
tuple.Add(columnName, columnValue);
}
}
else
{
tuple.Add(columnName, columnValue);
}
}
else
{
tuple.Add(columnName, columnValue);
}
}
else if (isFloat)
{
if (entityDescriptor != null)
{
EntityDescriptor.Attribute attribute = entityDescriptor.GetAttributeBasedOnColumnName(columnName);
if (attribute != null)
{
if (attribute.GetType().Equals(IDataTypeHandler.JAVASCRIPT_NUMBER_DATA_TYPE, StringComparison.OrdinalIgnoreCase))
{
tuple.Add(columnName, columnValue);
}
}
else
{
tuple.Add(columnName, columnValue);
}
}
else
{
tuple.Add(columnName, columnValue);
}
tuple.Add(columnName, columnValue);
}
else if (isBlob)
{
tuple.Add(columnName, columnValue);
}
}
tuples.Add((Dictionary<String, Object>)tuple);
}
SQLite3.Finalize(statement);
return tuples.GetEnumerator();
#elif WINDOWS
foreach (SQLiteQueryRow cursor in statement)
{
IDictionary<String, Object> tuple = new Dictionary<String, Object>();
List<SQLiteQueryColumn> columns = cursor.column;
if (columns == null || columns.Count <= 0)
{
continue;
}
foreach (SQLiteQueryColumn column in columns)
{
String columnName = column.Key;
Object columnValue = column.Value;
bool isString = false;
bool isLong = false;
bool isFloat = false;
bool isBlob = false;
if (columnValue != null)
{
if (columnValue.GetType().FullName.Equals(typeof(String).FullName, StringComparison.OrdinalIgnoreCase))
{
isString = true;
}
else if (columnValue.GetType().FullName.Equals(typeof(long).FullName, StringComparison.OrdinalIgnoreCase))
{
isLong = true;
}
else if (columnValue.GetType().FullName.Equals(typeof(float).FullName, StringComparison.OrdinalIgnoreCase))
{
isFloat = true;
}
else if (columnValue.GetType().FullName.Equals(typeof(byte).FullName, StringComparison.OrdinalIgnoreCase))
{
isBlob = true;
}
}
else
{
isString = true;
}
if (isString)
{
if (entityDescriptor != null)
{
EntityDescriptor.Attribute attribute = entityDescriptor.GetAttributeBasedOnColumnName(columnName);
if (attribute != null)
{
if (attribute.GetType().Equals(IDataTypeHandler.CSHARP_STRING_DATA_TYPE, StringComparison.OrdinalIgnoreCase))
{
tuple.Add(columnName, (String)columnValue);
}
else if (attribute.GetType().Equals(IDataTypeHandler.CSHARP_BOOLEAN_PRIMITIVE_DATA_TYPE, StringComparison.OrdinalIgnoreCase))
{
tuple.Add(columnName, columnValue.Equals(Boolean.TrueString.ToString()) ? true : false);
}
else if (attribute.GetType().Equals(IDataTypeHandler.CSHARP_BOOLEAN_DATA_TYPE, StringComparison.OrdinalIgnoreCase))
{
tuple.Add(columnName, columnValue.Equals(Boolean.TrueString.ToString()) ? Boolean.TrueString : Boolean.FalseString);
}
else if (attribute.GetType().Equals(IDataTypeHandler.JAVASCRIPT_STRING_DATA_TYPE, StringComparison.OrdinalIgnoreCase))
{
tuple.Add(columnName, (String)columnValue);
}
}
else
{
tuple.Add(columnName, columnValue);
}
}
else
{
tuple.Add(columnName, columnValue);
}
}
else if (isLong)
{
if (entityDescriptor != null)
{
EntityDescriptor.Attribute attribute = entityDescriptor.GetAttributeBasedOnColumnName(columnName);
if (attribute != null)
{
if (attribute.GetType().Equals(IDataTypeHandler.JAVASCRIPT_NUMBER_DATA_TYPE, StringComparison.OrdinalIgnoreCase))
{
tuple.Add(columnName, columnValue);
}
}
else
{
tuple.Add(columnName, columnValue);
}
}
else
{
tuple.Add(columnName, columnValue);
}
}
else if (isFloat)
{
if (entityDescriptor != null)
{
EntityDescriptor.Attribute attribute = entityDescriptor.GetAttributeBasedOnColumnName(columnName);
if (attribute != null)
{
if (attribute.GetType().Equals(IDataTypeHandler.JAVASCRIPT_NUMBER_DATA_TYPE, StringComparison.OrdinalIgnoreCase))
{
tuple.Add(columnName, columnValue);
}
}
else
{
tuple.Add(columnName, columnValue);
}
}
else
{
tuple.Add(columnName, columnValue);
}
tuple.Add(columnName, columnValue);
}
else if (isBlob)
{
tuple.Add(columnName, columnValue);
}
}
tuples.Add((Dictionary<String, Object>)tuple);
}
return tuples.GetEnumerator();
#endif
}
/// <summary>
/// Iterates the provided cursor, and returns tuples in form of actual objects.
/// </summary>
/// <param name="entityDescriptor">Entity Descriptor Object</param>
/// <param name="values">Values</param>
/// <returns></returns>
private static IEnumerator<Object> ParseAndInflateData(EntityDescriptor entityDescriptor, IEnumerator<IDictionary<String, Object>> values)
{
Siminov.IsActive();
ICollection<Object> tuples = new LinkedList<Object>();
while (values.MoveNext())
{
IDictionary<String, Object> value = values.Current;
ICollection<String> columnNames = value.Keys;
IEnumerator<String> columnNamesIterate = columnNames.GetEnumerator();
IDictionary<String, Object> data = new Dictionary<String, Object>();
while (columnNamesIterate.MoveNext())
{
String columnName = columnNamesIterate.Current;
if (entityDescriptor.ContainsAttributeBasedOnColumnName(columnName))
{
data.Add(entityDescriptor.GetAttributeBasedOnColumnName(columnName).GetSetterMethodName(), value[columnName]);
}
}
Object model = null;
try
{
model = ClassUtils.CreateAndInflateObject(entityDescriptor.GetClassName(), data);
}
catch (SiminovException siminovException)
{
Log.Log.Error(typeof(DatabaseHelper).FullName, "ParseAndInflateData", "SiminovException caught while create and inflate object through reflection, CLASS-NAME: " + entityDescriptor.GetClassName() + ", " + siminovException.GetMessage());
throw new DatabaseException(typeof(DatabaseHelper).FullName, "ParseAndInflateData", siminovException.GetMessage());
}
tuples.Add(model);
}
return tuples.GetEnumerator();
}