public RowsetBase Execute(ICRUDQueryExecutionContext context, Query query, bool oneRow = false)
{
var ctx = (MySQLCRUDQueryExecutionContext)context;
var target = ctx.DataStore.TargetName;
using (var cmd = ctx.Connection.CreateCommand())
{
cmd.CommandText = m_Source.StatementSource;
PopulateParameters(cmd, query);
cmd.Transaction = ctx.Transaction;
MySqlDataReader reader = null;
try
{
reader = oneRow ? cmd.ExecuteReader(CommandBehavior.SingleRow) : cmd.ExecuteReader();
GeneratorUtils.LogCommand(ctx.DataStore.LogLevel, "queryhandler-ok", cmd, null);
}
catch (Exception error)
{
GeneratorUtils.LogCommand(ctx.DataStore.LogLevel, "queryhandler-error", cmd, error);
throw;
}
using (reader)
return(PopulateRowset(ctx, reader, target, query, m_Source, oneRow));
} //using command
}
public int ExecuteWithoutFetch(ICRUDQueryExecutionContext context, Query query)
{
var ctx = (MySQLCRUDQueryExecutionContext)context;
using (var cmd = ctx.Connection.CreateCommand())
{
cmd.CommandText = m_Source.StatementSource;
PopulateParameters(cmd, query);
cmd.Transaction = ctx.Transaction;
try
{
var affected = cmd.ExecuteNonQuery();
GeneratorUtils.LogCommand(ctx.DataStore.LogLevel, "queryhandler-ok", cmd, null);
return(affected);
}
catch (Exception error)
{
GeneratorUtils.LogCommand(ctx.DataStore.LogLevel, "queryhandler-error", cmd, error);
throw;
}
} //using command
}
public override RowsetBase Execute(ICRUDQueryExecutionContext context, Query query, bool oneRow = false)
{
var ctx = (MongoDBCRUDQueryExecutionContext)context;
Connector.Collection collection;
var qry = MakeQuery(ctx.Database, query, out collection );
Schema schema = null;
if (query.ResultRowType!=null)
schema = Schema.GetForTypedRow(query.ResultRowType);
Rowset result = null;
if (schema!=null)
result = new Rowset(schema);
var skipCount = query["SKIP_COUNT"].AsInt(0);
using(var cursor = collection.Find(qry, skipCount, oneRow ? 1: 0))
foreach(var doc in cursor)
{
if (schema==null)
{
schema = m_Store.Converter.InferSchemaFromBSONDocument(doc);
result = new Rowset(schema);
}
var row = Row.MakeRow(schema, query.ResultRowType);
m_Store.Converter.BSONDocumentToRow(doc, row, m_Store.TargetName);
result.Add( row );
}
return result;
}
public override Cursor OpenCursor(ICRUDQueryExecutionContext context, Query query)
{
var ctx = (MongoDbCRUDQueryExecutionContext)context;
Connector.Collection collection;
var qry = MakeQuery(ctx.Database, query, Source, out collection);
Schema schema = null;
var dtp = query.ResultDocType;
if (dtp != null && typeof(TypedDoc).IsAssignableFrom(dtp))
{
schema = Schema.GetForTypedDoc(query.ResultDocType);
}
var p = query[QUERY_PARAM_SKIP_COUNT];
var skipCount = p != null?p.Value.AsInt(0) : 0;
p = query[QUERY_PARAM_FETCH_BY];
var fetchBy = p != null?p.Value.AsInt(0) : 0;
var mcursor = collection.Find(qry, skipCount, fetchBy);
var enumerable = enumOpenCursor(schema, query, mcursor);
return(new MongoDbCursor(mcursor, enumerable));
}
public override int ExecuteWithoutFetch(ICRUDQueryExecutionContext context, Query query)
{
var ctx = (MongoDbCRUDQueryExecutionContext)context;
var qry = MakeQuery(query, Source);
return(ctx.Database.RunCommand(qry) != null ? 1 : 0);
}
public override RowsetBase Execute(ICRUDQueryExecutionContext context, Query query, bool oneRow = false)
{
var ctx = (MongoDbCRUDQueryExecutionContext)context;
Connector.Collection collection;
var qry = MakeQuery(ctx.Database, query, Source, out collection);
Schema schema = null;
var dtp = query.ResultDocType;
if (dtp != null && typeof(TypedDoc).IsAssignableFrom(dtp))
{
schema = Schema.GetForTypedDoc(query.ResultDocType);
}
Rowset result = null;
if (schema != null)
{
result = new Rowset(schema);
}
var p = query[QUERY_PARAM_SKIP_COUNT];
var skipCount = p != null?p.Value.AsInt(0) : 0;
p = query[QUERY_PARAM_FETCH_BY];
var fetchBy = p != null?p.Value.AsInt(0) : 0;
p = query[QUERY_PARAM_FETCH_LIMIT];
var fetchLimit = p != null?p.Value.AsInt(-1) : -1;
using (var cursor = collection.Find(qry, skipCount, oneRow ? 1: fetchBy))
foreach (var doc in cursor)
{
if (schema == null)
{
schema = Store.Converter.InferSchemaFromBSONDocument(doc);
result = new Rowset(schema);
}
var row = Doc.MakeDoc(schema, query.ResultDocType);
Store.Converter.BSONDocumentToDataDoc(doc, row, Store.TargetName);
result.Add(row);
if (fetchLimit > 0 && result.Count >= fetchLimit)
{
break;
}
}
return(result);
}
public override Schema GetSchema(ICRUDQueryExecutionContext context, Query query)
{
var ctx = (MongoDBCRUDQueryExecutionContext)context;
Connector.Collection collection;
var qry = MakeQuery(ctx.Database, query, out collection );
var doc = collection.FindOne(qry);
if (doc==null) return null;
return m_Store.Converter.InferSchemaFromBSONDocument(doc);
}
public override Schema GetSchema(ICRUDQueryExecutionContext context, Query query)
{
var ctx = (MongoDbCRUDQueryExecutionContext)context;
Connector.Collection collection;
var qry = MakeQuery(ctx.Database, query, Source, out collection);
var doc = collection.FindOne(qry);
if (doc == null)
{
return(null);
}
return(Store.Converter.InferSchemaFromBSONDocument(doc));
}
public async override Task <RowsetBase> ExecuteAsync(ICRUDQueryExecutionContext context, Query query, bool oneRow = false)
{
await Task.Delay(100);
var result = new Rowset(Schema.GetForTypedDoc <Patient>());
var p = query.FindParamByName("Msg")?.Value.AsString();
result.Insert(new Patient {
First_Name = "Jack", Last_Name = "Nice", Address1 = p
});
result.Insert(new Patient {
First_Name = "Mary", Last_Name = "Dice", Address1 = p
});
return(result);
}
public Cursor OpenCursor(ICRUDQueryExecutionContext context, Query query)
{
var ctx = (MySQLCRUDQueryExecutionContext)context;
var target = ctx.DataStore.TargetName;
Schema.FieldDef[] toLoad;
Schema schema = null;
MySqlDataReader reader = null;
var cmd = ctx.Connection.CreateCommand();
try
{
cmd.CommandText = m_Source.StatementSource;
PopulateParameters(cmd, query);
cmd.Transaction = ctx.Transaction;
try
{
reader = cmd.ExecuteReader();
GeneratorUtils.LogCommand(ctx.DataStore.LogLevel, "queryhandler-ok", cmd, null);
}
catch (Exception error)
{
GeneratorUtils.LogCommand(ctx.DataStore.LogLevel, "queryhandler-error", cmd, error);
throw;
}
schema = GetSchemaForQuery(target, query, reader, m_Source, out toLoad);
}
catch
{
if (reader != null)
{
reader.Dispose();
}
cmd.Dispose();
throw;
}
var enumerable = execEnumerable(ctx, cmd, reader, schema, toLoad, query);
return(new MySQLCursor(ctx, cmd, reader, enumerable));
}
public override RowsetBase Execute(ICRUDQueryExecutionContext context, Query query, bool oneRow = false)
{
var ctx = (MongoDBCRUDQueryExecutionContext)context;
NFX.DataAccess.MongoDB.Connector.Collection collection;
var qry = MakeQuery(ctx.Database, query, out collection);
var rrow = new TResult();
var sw = Stopwatch.StartNew();
rrow.Count = collection.Count(qry);//Performs server-side count over query
rrow.Interval = sw.Elapsed;
var result = new Rowset(Schema.GetForTypedRow(typeof(TResult)));
result.Add(rrow);
return result;
}
public override RowsetBase Execute(ICRUDQueryExecutionContext context, Query query, bool oneRow = false)
{
var ctx = (MongoDBCRUDQueryExecutionContext)context;
Connector.Collection collection;
var qry = MakeQuery(ctx.Database, query, out collection );
Schema schema = null;
var rtp = query.ResultRowType;
if (rtp!=null && typeof(TypedRow).IsAssignableFrom(rtp))
schema = Schema.GetForTypedRow(query.ResultRowType);
Rowset result = null;
if (schema!=null)
result = new Rowset(schema);
var p = query[QUERY_PARAM_SKIP_COUNT];
var skipCount = p!=null ? p.Value.AsInt(0) : 0;
p = query[QUERY_PARAM_FETCH_BY];
var fetchBy = p!=null ? p.Value.AsInt(0) : 0;
p = query[QUERY_PARAM_FETCH_LIMIT];
var fetchLimit = p!=null ? p.Value.AsInt(-1) : -1;
using(var cursor = collection.Find(qry, skipCount, oneRow ? 1: fetchBy))
foreach(var doc in cursor)
{
if (schema==null)
{
schema = m_Store.Converter.InferSchemaFromBSONDocument(doc);
result = new Rowset(schema);
}
var row = Row.MakeRow(schema, query.ResultRowType);
m_Store.Converter.BSONDocumentToRow(doc, row, m_Store.TargetName);
result.Add( row );
if (fetchLimit>0 && result.Count>=fetchLimit) break;
}
return result;
}
public override RowsetBase Execute(ICRUDQueryExecutionContext context, Query query, bool oneRow = false)
{
var ctx = (MongoDBCRUDQueryExecutionContext)context;
Connector.Collection collection;
var qry = MakeQuery(ctx.Database, query, out collection);
Schema schema = null;
var rtp = query.ResultRowType;
if (rtp != null && typeof(TypedRow).IsAssignableFrom(rtp))
{
schema = Schema.GetForTypedRow(query.ResultRowType);
}
Rowset result = null;
if (schema != null)
{
result = new Rowset(schema);
}
var skipCount = query["SKIP_COUNT"].AsInt(0);
using (var cursor = collection.Find(qry, skipCount, oneRow ? 1: 0))
foreach (var doc in cursor)
{
if (schema == null)
{
schema = m_Store.Converter.InferSchemaFromBSONDocument(doc);
result = new Rowset(schema);
}
var row = Row.MakeRow(schema, query.ResultRowType);
m_Store.Converter.BSONDocumentToRow(doc, row, m_Store.TargetName);
result.Add(row);
}
return(result);
}
public override RowsetBase Execute(ICRUDQueryExecutionContext context, Query query, bool oneRow = false)
{
var ctx = (MongoDbCRUDQueryExecutionContext)context;
Azos.Data.Access.MongoDb.Connector.Collection collection;
var qry = MakeQuery(ctx.Database, query, Source, out collection);
var rrow = new TResult();
var sw = Stopwatch.StartNew();
rrow.Count = collection.Count(qry);//Performs server-side count over query
rrow.Interval = sw.Elapsed;
var result = new Rowset(Schema.GetForTypedDoc(typeof(TResult)));
result.Add(rrow);
return(result);
}
public Schema GetSchema(ICRUDQueryExecutionContext context, Query query)
{
var ctx = (MySQLCRUDQueryExecutionContext)context;
var target = ctx.DataStore.TargetName;
using (var cmd = ctx.Connection.CreateCommand())
{
cmd.CommandText = m_Source.StatementSource;
PopulateParameters(cmd, query);
cmd.Transaction = ctx.Transaction;
MySqlDataReader reader = null;
try
{
reader = cmd.ExecuteReader(CommandBehavior.SchemaOnly);
GeneratorUtils.LogCommand(ctx.DataStore.LogLevel, "queryhandler-ok", cmd, null);
}
catch(Exception error)
{
GeneratorUtils.LogCommand(ctx.DataStore.LogLevel, "queryhandler-error", cmd, error);
throw;
}
using (reader)
{
Schema.FieldDef[] toLoad;
return getSchema(target, query, reader, out toLoad);
}//using reader
}//using command
}
public Schema GetSchema(ICRUDQueryExecutionContext context, Query query)
{
var ctx = (MySQLCRUDQueryExecutionContext)context;
var target = ctx.DataStore.TargetName;
using (var cmd = ctx.Connection.CreateCommand())
{
cmd.CommandText = m_Source.StatementSource;
PopulateParameters(cmd, query);
cmd.Transaction = ctx.Transaction;
MySqlDataReader reader = null;
try
{
reader = cmd.ExecuteReader(CommandBehavior.SchemaOnly);
GeneratorUtils.LogCommand(ctx.DataStore.LogLevel, "queryhandler-ok", cmd, null);
}
catch (Exception error)
{
GeneratorUtils.LogCommand(ctx.DataStore.LogLevel, "queryhandler-error", cmd, error);
throw;
}
using (reader)
{
Schema.FieldDef[] toLoad;
return(GetSchemaForQuery(target, query, reader, m_Source, out toLoad));
} //using reader
} //using command
}
public Task<Cursor> OpenCursorAsync(ICRUDQueryExecutionContext context, Query query)
{
return TaskUtils.AsCompletedTask( () => this.OpenCursor(context, query));
}
public override Schema GetSchema(ICRUDQueryExecutionContext context, Query query)
{
throw new NotImplementedException();
}
public virtual RowsetBase Execute(ICRUDQueryExecutionContext context, Query query, bool oneRow = false)
{
throw new NotImplementedException();
}
public Schema GetSchema(ICRUDQueryExecutionContext context, Query query)
{
return(m_Store.Map.GetCRUDSchemaForName(m_Source.OriginalSource));
}
/// <summary> /// Executes query that dows not return results. The implementation may be called by multiple threads and must be safe. /// Returns rows affected /// </summary> public abstract int ExecuteWithoutFetch(ICRUDQueryExecutionContext context, Query query);
public virtual Schema GetSchema(ICRUDQueryExecutionContext context, Query query)
{
throw new NotImplementedException();
}
public int ExecuteWithoutFetch(ICRUDQueryExecutionContext context, Query query)
{
var ctx = (MySQLCRUDQueryExecutionContext)context;
using (var cmd = ctx.Connection.CreateCommand())
{
cmd.CommandText = m_Source.StatementSource;
PopulateParameters(cmd, query);
cmd.Transaction = ctx.Transaction;
try
{
var affected = cmd.ExecuteNonQuery();
GeneratorUtils.LogCommand(ctx.DataStore.LogLevel, "queryhandler-ok", cmd, null);
return affected;
}
catch(Exception error)
{
GeneratorUtils.LogCommand(ctx.DataStore.LogLevel, "queryhandler-error", cmd, error);
throw;
}
}//using command
}
/// <summary> /// Executes query into Cursor. The implementation may be called by multiple threads and must be safe /// </summary> public abstract Cursor OpenCursor(ICRUDQueryExecutionContext context, Query query);
public Task<Cursor> OpenCursorAsync(ICRUDQueryExecutionContext context, Query query)
{
throw new NotSupportedException("Erl.OpenCursorAsync");
}
public Cursor OpenCursor(ICRUDQueryExecutionContext context, Query query)
{
var ctx = (MySQLCRUDQueryExecutionContext)context;
var target = ctx.DataStore.TargetName;
Schema.FieldDef[] toLoad;
Schema schema = null;
MySqlDataReader reader = null;
var cmd = ctx.Connection.CreateCommand();
try
{
cmd.CommandText = m_Source.StatementSource;
PopulateParameters(cmd, query);
cmd.Transaction = ctx.Transaction;
try
{
reader = cmd.ExecuteReader();
GeneratorUtils.LogCommand(ctx.DataStore.LogLevel, "queryhandler-ok", cmd, null);
}
catch(Exception error)
{
GeneratorUtils.LogCommand(ctx.DataStore.LogLevel, "queryhandler-error", cmd, error);
throw;
}
schema = GetSchemaForQuery(target, query, reader, m_Source, out toLoad);
}
catch
{
if (reader!=null) reader.Dispose();
cmd.Dispose();
throw;
}
var enumerable = execEnumerable(ctx, cmd, reader, schema, toLoad, query);
return new MySQLCursor( ctx, cmd, reader, enumerable );
}
public Cursor OpenCursor(ICRUDQueryExecutionContext context, Query query)
{
throw new NotSupportedException("Erl.OpenCursor");
}
//used for subscription
public int ExecuteWithoutFetch(ICRUDQueryExecutionContext context, Query query)
{
var store = ((ErlCRUDQueryExecutionContext)context).DataStore;
var mbox = ((ErlCRUDQueryExecutionContext)context).ErlMailBox;
var ts = ((ErlCRUDQueryExecutionContext)context).SubscriptionTimestamp;
if (!ts.HasValue)
throw new ErlDataAccessException(StringConsts.ERL_DS_QUERY_TMSTAMP_CTX_ABSENT_ERROR);
var parsed = prepareQuery(m_Source);
var reqID = m_Store.NextRequestID;
var bind = new ErlVarBind();
var wass = false;
var wast = false;
foreach(var erlVar in parsed.ArgVars)
{
var name = erlVar.Name.Value;
if (erlVar.Name==ATOM_Subscriber &&
erlVar.ValueType==ErlTypeOrder.ErlPid)
{
bind.Add(ATOM_Subscriber, mbox.Self);
wass = true;
continue;
}
if (erlVar.Name==ATOM_Timestamp &&
erlVar.ValueType==ErlTypeOrder.ErlLong)
{
bind.Add(ATOM_Timestamp, new ErlLong(ts.Value.Microseconds));
wast = true;
continue;
}
var clrPar = query[name];
if (clrPar==null)
throw new ErlDataAccessException(StringConsts.ERL_DS_QUERY_PARAM_NOT_FOUND_ERROR.Args(parsed.Source, name));
bind.Add(erlVar, clrPar.Value);
}
if (!wass)
throw new ErlDataAccessException(StringConsts.ERL_DS_QUERY_SUBSCR_NOT_FOUND_ERROR);
if (!wast)
throw new ErlDataAccessException(StringConsts.ERL_DS_QUERY_TMSTAMP_NOT_FOUND_ERROR);
var request = parsed.ArgTerm.Subst(bind);
var args = new ErlList
{
reqID.ToErlObject(),
parsed.Module,
parsed.Function,
request
};
var rawResp = store.ExecuteRPC(ErlDataStore.NFX_CRUD_MOD,
ErlDataStore.NFX_SUBSCRIBE_FUN, args, null);
var response = rawResp as ErlTuple;
// {ReqID, {ok, SchemaID, [{row},{row}...]}}
// {ReqID, {ReqID::int(), {error, Code::int(), Msg}}}
if (response==null)
throw new ErlDataAccessException(StringConsts.ERL_DS_INVALID_RESP_PROTOCOL_ERROR+"QryHndlr.Response==null");
bind = response.Match(EXECUTE_SUBSCRIBE_OK_PATTERN);
checkForError(EXECUTE_SUBSCRIBE_ERROR_PATTERN, response, bind, reqID);
//{ReqID::int(), ok}
return 0;
}
public RowsetBase Execute(ICRUDQueryExecutionContext context, Query query, bool oneRow = false)
{
var store = ((ErlCRUDQueryExecutionContext)context).DataStore;
var mbox = ((ErlCRUDQueryExecutionContext)context).ErlMailBox;
var parsed = prepareQuery(m_Source);
var reqID = m_Store.NextRequestID;
var bind = new ErlVarBind();
foreach (var erlVar in parsed.ArgVars)
{
var name = erlVar.Name.Value;
var clrPar = query[name];
if (clrPar == null)
{
throw new ErlDataAccessException(StringConsts.ERL_DS_QUERY_PARAM_NOT_FOUND_ERROR.Args(parsed.Source, name));
}
bind.Add(erlVar, clrPar.Value);
}
var request = parsed.ArgTerm.Subst(bind);
var args = new ErlList
{
reqID.ToErlObject(),
parsed.Module,
parsed.Function,
request
};
var rawResp = store.ExecuteRPC(ErlDataStore.NFX_CRUD_MOD,
ErlDataStore.NFX_RPC_FUN, args, mbox);
var response = rawResp as ErlTuple;
// {ReqID, {ok, SchemaID, [{row},{row}...]}}
// {ReqID, {error, Reason}}
if (response == null)
{
throw new ErlDataAccessException(StringConsts.ERL_DS_INVALID_RESP_PROTOCOL_ERROR + "QryHndlr.Response timeout");
}
bind = response.Match(EXECUTE_OK_PATTERN);
checkForError(EXECUTE_ERROR_PATTERN, response, bind, reqID);
if (bind[ATOM_ReqID].ValueAsLong != reqID)
{
throw new ErlDataAccessException(StringConsts.ERL_DS_INVALID_RESP_PROTOCOL_ERROR + "QryHndlr.Response.ReqID mismatch");
}
//{ReqID::int(), {ok, SchemaID::atom(), Rows::list()}}
var schema = bind[ATOM_SchemaID].ValueAsString;
var rows = bind[ATOM_Rows] as ErlList;
//{ok, "tca_jaba",
//[
// {tca_jaba, 1234, tav, "User is cool", true},
// {tca_jaba, 2344, zap, "Zaplya xochet pit", false},
// {tca_jaba, 8944, tav, "User is not good", false}
//]};
return(m_Store.Map.ErlCRUDResponseToRowset(schema, rows, query.ResultRowType));
}
public override RowsetBase Execute(ICRUDQueryExecutionContext context, Query query, bool oneRow = false)
{
throw new NotImplementedException();
}
public RowsetBase Execute(ICRUDQueryExecutionContext context, Query query, bool oneRow = false)
{
var ctx = (MySQLCRUDQueryExecutionContext)context;
var target = ctx.DataStore.TargetName;
using (var cmd = ctx.Connection.CreateCommand())
{
cmd.CommandText = m_Source.StatementSource;
PopulateParameters(cmd, query);
cmd.Transaction = ctx.Transaction;
MySqlDataReader reader = null;
try
{
reader = oneRow ? cmd.ExecuteReader(CommandBehavior.SingleRow) : cmd.ExecuteReader();
GeneratorUtils.LogCommand(ctx.DataStore.LogLevel, "queryhandler-ok", cmd, null);
}
catch(Exception error)
{
GeneratorUtils.LogCommand(ctx.DataStore.LogLevel, "queryhandler-error", cmd, error);
throw;
}
using (reader)
return PopulateRowset(ctx, reader, target, query, m_Source, oneRow);
}//using command
}
public override Cursor OpenCursor(ICRUDQueryExecutionContext context, Query query)
{
var ctx = (MongoDBCRUDQueryExecutionContext)context;
Connector.Collection collection;
var qry = MakeQuery(ctx.Database, query, out collection );
Schema schema = null;
var rtp = query.ResultRowType;
if (rtp!=null && typeof(TypedRow).IsAssignableFrom(rtp))
schema = Schema.GetForTypedRow(query.ResultRowType);
var p = query[QUERY_PARAM_SKIP_COUNT];
var skipCount = p!=null ? p.Value.AsInt(0) : 0;
p = query[QUERY_PARAM_FETCH_BY];
var fetchBy = p!=null ? p.Value.AsInt(0) : 0;
var mcursor = collection.Find(qry, skipCount, fetchBy);
var enumerable = enumOpenCursor(schema, query, mcursor);
return new MongoDBCursor( mcursor, enumerable );
}
public override Cursor OpenCursor(ICRUDQueryExecutionContext context, Query query)
{
throw new NotImplementedException();
}
/// <summary> /// Executes query into Cursor. The implementation may be called by multiple threads and must be safe /// </summary> public abstract Task <Cursor> OpenCursorAsync(ICRUDQueryExecutionContext context, Query query);
public override int ExecuteWithoutFetch(ICRUDQueryExecutionContext context, Query query)
{
throw new NotImplementedException();
}
/// <summary> /// Executes query that dows not return results. The implementation may be called by multiple threads and must be safe. /// Returns rows affected /// </summary> public abstract Task <int> ExecuteWithoutFetchAsync(ICRUDQueryExecutionContext context, Query query);
public virtual int ExecuteWithoutFetch(ICRUDQueryExecutionContext context, Query query)
{
throw new NotImplementedException();
}
public virtual Task<Schema> GetSchemaAsync(ICRUDQueryExecutionContext context, Query query)
{
return TaskUtils.AsCompletedTask( () => this.GetSchema(context, query));
}
public RowsetBase Execute(ICRUDQueryExecutionContext context, Query query, bool oneRow = false)
{
var ctx = (MySQLCRUDQueryExecutionContext)context;
var target = ctx.DataStore.TargetName;
Rowset result = null;
using (var cmd = ctx.Connection.CreateCommand())
{
cmd.CommandText = m_Source.StatementSource;
PopulateParameters(cmd, query);
cmd.Transaction = ctx.Transaction;
MySqlDataReader reader = null;
try
{
reader = oneRow ? cmd.ExecuteReader(CommandBehavior.SingleRow) : cmd.ExecuteReader();
GeneratorUtils.LogCommand(ctx.DataStore.LogLevel, "queryhandler-ok", cmd, null);
}
catch(Exception error)
{
GeneratorUtils.LogCommand(ctx.DataStore.LogLevel, "queryhandler-error", cmd, error);
throw;
}
using (reader)
{
Schema.FieldDef[] toLoad;
Schema schema = getSchema(target, query, reader, out toLoad);
result = new Rowset(schema);
while(reader.Read())
{
var row = Row.MakeRow(schema, query.ResultRowType);
for (int i = 0; i < reader.FieldCount; i++)
{
var fdef = toLoad[i];
if (fdef==null) continue;
var val = reader.GetValue(i);
if (fdef.NonNullableType==typeof(bool))
row[fdef.Order] = val.AsNullableBool();
else
row[fdef.Order] = val;
}
result.Add( row );
if (oneRow) break;
}
}//using reader
}//using command
return result;
}
public virtual Task<RowsetBase> ExecuteAsync(ICRUDQueryExecutionContext context, Query query, bool oneRow = false)
{
return TaskUtils.AsCompletedTask( () => this.Execute(context, query, oneRow));
}
public Task <Cursor> OpenCursorAsync(ICRUDQueryExecutionContext context, Query query)
{
throw new NotSupportedException("Erl.OpenCursorAsync");
}
public virtual Task<int> ExecuteWithoutFetchAsync(ICRUDQueryExecutionContext context, Query query)
{
return TaskUtils.AsCompletedTask( () => this.ExecuteWithoutFetch(context, query));
}
public RowsetBase Execute(ICRUDQueryExecutionContext context, Query query, bool oneRow = false)
{
var store = ((ErlCRUDQueryExecutionContext)context).DataStore;
var mbox = ((ErlCRUDQueryExecutionContext)context).ErlMailBox;
var parsed = prepareQuery(m_Source);
var reqID = m_Store.NextRequestID;
var bind = new ErlVarBind();
foreach(var erlVar in parsed.ArgVars)
{
var name = erlVar.Name.Value;
var clrPar = query[name];
if (clrPar==null)
throw new ErlDataAccessException(StringConsts.ERL_DS_QUERY_PARAM_NOT_FOUND_ERROR.Args(parsed.Source, name));
bind.Add(erlVar, clrPar.Value);
}
var request = parsed.ArgTerm.Subst(bind);
var args = new ErlList
{
reqID.ToErlObject(),
parsed.Module,
parsed.Function,
request
};
var rawResp = store.ExecuteRPC(ErlDataStore.NFX_CRUD_MOD,
ErlDataStore.NFX_RPC_FUN, args, mbox);
var response = rawResp as ErlTuple;
// {ReqID, {ok, SchemaID, [{row},{row}...]}}
// {ReqID, {error, Reason}}
if (response==null)
throw new ErlDataAccessException(StringConsts.ERL_DS_INVALID_RESPONSE_PROTOCOL_ERROR+"QryHndlr.Response timeout");
bind = response.Match(EXECUTE_OK_PATTERN);
if (bind==null)
{
bind = response.Match(EXECUTE_ERROR_PATTERN);
if (bind==null || bind[ATOM_ReqID].ValueAsLong != reqID)
throw new ErlDataAccessException(StringConsts.ERL_DS_INVALID_RESPONSE_PROTOCOL_ERROR+"QryHndlr.Response wrong error");
throw new ErlDataAccessException("Remote error code {0}. Message: '{1}'".Args(bind[ATOM_Code], bind[ATOM_Msg]));
}
if (bind[ATOM_ReqID].ValueAsLong != reqID)
throw new ErlDataAccessException(StringConsts.ERL_DS_INVALID_RESPONSE_PROTOCOL_ERROR+"QryHndlr.Response.ReqID mismatch");
//{ReqID::int(), {ok, SchemaID::atom(), Rows::list()}}
var schema = bind[ATOM_SchemaID].ValueAsString;
var rows = bind[ATOM_Rows] as ErlList;
//{ok, "tca_jaba",
//[
// {tca_jaba, 1234, tav, "User is cool", true},
// {tca_jaba, 2344, zap, "Zaplya xochet pit", false},
// {tca_jaba, 8944, tav, "User is not good", false}
//]};
return m_Store.Map.ErlCRUDResponseToRowset(schema, rows, query.ResultRowType);
}
public virtual Cursor OpenCursor(ICRUDQueryExecutionContext context, Query query)
{
throw new NotImplementedException();
}
/// <summary> /// Executes query without fetching any data but schema. The implementation may be called by multiple threads and must be safe /// </summary> public abstract Schema GetSchema(ICRUDQueryExecutionContext context, Query query);
/// <summary> /// Executes query without fetching any data but schema. The implementation may be called by multiple threads and must be safe /// </summary> public abstract Task <Schema> GetSchemaAsync(ICRUDQueryExecutionContext context, Query query);
/// <summary> /// Executes query. The implementation may be called by multiple threads and must be safe /// </summary> public abstract RowsetBase Execute(ICRUDQueryExecutionContext context, Query query, bool oneRow = false);
public override Task <Schema> GetSchemaAsync(ICRUDQueryExecutionContext context, Query query)
{
return(TaskUtils.AsCompletedTask(() => this.GetSchema(context, query)));
}
/// <summary> /// Executes query. The implementation may be called by multiple threads and must be safe /// </summary> public abstract Task <RowsetBase> ExecuteAsync(ICRUDQueryExecutionContext context, Query query, bool oneRow = false);
public override Task <RowsetBase> ExecuteAsync(ICRUDQueryExecutionContext context, Query query, bool oneRow = false)
{
return(TaskUtils.AsCompletedTask(() => this.Execute(context, query, oneRow)));
}
public override int ExecuteWithoutFetch(ICRUDQueryExecutionContext context, Query query)
{
var ctx = (MongoDBCRUDQueryExecutionContext)context;
var qry = MakeQuery(query);
return ctx.Database.RunCommand( qry ) != null ? 1 : 0;
}
public override Task <Cursor> OpenCursorAsync(ICRUDQueryExecutionContext context, Query query)
{
return(TaskUtils.AsCompletedTask(() => this.OpenCursor(context, query)));
}
//used for subscription
public int ExecuteWithoutFetch(ICRUDQueryExecutionContext context, Query query)
{
var store = ((ErlCRUDQueryExecutionContext)context).DataStore;
var mbox = ((ErlCRUDQueryExecutionContext)context).ErlMailBox;
var ts = ((ErlCRUDQueryExecutionContext)context).SubscriptionTimestamp;
if (!ts.HasValue)
throw new ErlDataAccessException(StringConsts.ERL_DS_QUERY_TIMESTAMP_CTX_ABSENT_ERROR);
var parsed = prepareQuery(m_Source);
var reqID = m_Store.NextRequestID;
var bind = new ErlVarBind();
var wass = false;
var wast = false;
foreach(var erlVar in parsed.ArgVars)
{
var name = erlVar.Name.Value;
if (erlVar.Name==ATOM_Subscriber &&
erlVar.ValueType==ErlTypeOrder.ErlPid)
{
bind.Add(ATOM_Subscriber, mbox.Self);
wass = true;
continue;
}
if (erlVar.Name==ATOM_Timestamp &&
erlVar.ValueType==ErlTypeOrder.ErlLong)
{
bind.Add(ATOM_Timestamp, new ErlLong(ts.Value.Microseconds));
wast = true;
continue;
}
var clrPar = query[name];
if (clrPar==null)
throw new ErlDataAccessException(StringConsts.ERL_DS_QUERY_PARAM_NOT_FOUND_ERROR.Args(parsed.Source, name));
bind.Add(erlVar, clrPar.Value);
}
if (!wass)
throw new ErlDataAccessException(StringConsts.ERL_DS_QUERY_SUBSCRIBER_NOT_FOUND_ERROR);
if (!wast)
throw new ErlDataAccessException(StringConsts.ERL_DS_QUERY_TIMESTAMP_NOT_FOUND_ERROR);
var request = parsed.ArgTerm.Subst(bind);
var args = new ErlList
{
reqID.ToErlObject(),
parsed.Module,
parsed.Function,
request
};
var rawResp = store.ExecuteRPC(ErlDataStore.NFX_CRUD_MOD,
ErlDataStore.NFX_SUBSCRIBE_FUN, args, null);
var response = rawResp as ErlTuple;
// {ReqID, {ok, SchemaID, [{row},{row}...]}}
// {ReqID, {ReqID::int(), {error, Code::int(), Msg}}}
if (response==null)
throw new ErlDataAccessException(StringConsts.ERL_DS_INVALID_RESPONSE_PROTOCOL_ERROR+"QryHndlr.Response==null");
bind = response.Match(EXECUTE_SUBSCRIBE_OK_PATTERN);
if (bind==null)
{
bind = response.Match(EXECUTE_SUBSCRIBE_ERROR_PATTERN);
if (bind==null || bind[ATOM_ReqID].ValueAsLong != reqID)
throw new ErlDataAccessException(StringConsts.ERL_DS_INVALID_RESPONSE_PROTOCOL_ERROR+"QryHndlr.Response wrong error");
var ecode = bind[ATOM_Code].ValueAsInt;
var emsg = bind[ATOM_Msg].ToString();
Exception error = new ErlDataAccessException("Remote error code {0}. Message: '{1}'".Args(ecode, emsg));
if (ecode==INVALID_SUBSCRIPTION_REQUEST_EXCEPTION)
error = new NFX.DataAccess.CRUD.Subscriptions.InvalidSubscriptionRequestException(emsg, error);
throw error;
}
if (bind[ATOM_ReqID].ValueAsLong != reqID)
throw new ErlDataAccessException(StringConsts.ERL_DS_INVALID_RESPONSE_PROTOCOL_ERROR+"QryHndlr.Response.ReqID mismatch");
//{ReqID::int(), ok}
return 0;
}
public override Task <int> ExecuteWithoutFetchAsync(ICRUDQueryExecutionContext context, Query query)
{
return(TaskUtils.AsCompletedTask(() => this.ExecuteWithoutFetch(context, query)));
}
public Schema GetSchema(ICRUDQueryExecutionContext context, Query query)
{
return m_Store.Map.GetCRUDSchemaForName(m_Source.OriginalSource);
}
