public EntityInfo TargetEntity; //for delete, insert, update
#endregion Fields
#region Constructors
public LinqCommand(EntityQuery query, LinqCommandType commandType, LinqCommandKind kind, EntityInfo targetEntity)
{
Kind = kind;
CommandType = commandType;
Query = query;
TargetEntity = targetEntity;
}
internal LinqCommand(LinqCommandInfo info, EntityInfo targetEntity, object[] parameterValues) {
Info = info;
Kind = info.CommandKind;
CommandType = info.CommandType;
TargetEntity = targetEntity;
ParameterValues = parameterValues;
Util.Check(ParameterValues.Length == info.Lambda.Parameters.Count, "Parameter values count ({0}) does not match parameter count ({1}) in lambda: {2}.",
parameterValues.Length, Info.Lambda.Parameters.Count, Info.Lambda);
}
internal LinqCommand(LinqCommandInfo info, EntityInfo targetEntity, object[] parameterValues)
{
Info = info;
Kind = info.CommandKind;
CommandType = info.CommandType;
TargetEntity = targetEntity;
ParameterValues = parameterValues;
Util.Check(ParameterValues.Length == info.Lambda.Parameters.Count, "Parameter values count ({0}) does not match parameter count ({1}) in lambda: {2}.",
parameterValues.Length, Info.Lambda.Parameters.Count, Info.Lambda);
}
public LinqCommandInfo(LinqCommand command, QueryOptions options, LinqCommandFlags flags,
List<Type> entityTypes, string cacheKey, List<ParameterExpression> externalParameters,
List<LambdaExpression> includes)
{
CommandType = command.CommandType;
CommandKind = command.Kind;
Options = options;
Flags = flags;
EntityTypes = entityTypes;
CacheKey = cacheKey;
ExternalParameters = externalParameters;
Includes = includes;
}
/// <summary>Executes non-query operation of specified type based on LINQ query. See concrete methods for specific command types
/// for more information and requirements to base query in each case. </summary>
/// <typeparam name="TEntity">Entity type.</typeparam>
/// <param name="query">Base query.</param>
/// <param name="commandType">Command type (insert, update or delete).</param>
/// <returns></returns>
public static int ExecuteNonQuery <TEntity>(this IQueryable query, LinqCommandType commandType)
{
var entQuery = query as EntityQuery;
var prov = entQuery.Provider as EntityQueryProvider;
var session = prov.Session;
Util.Check(session != null, "Cannot execute query not associated with active entity session.");
var targetEnt = session.Context.App.Model.GetEntityInfo(typeof(TEntity));
var command = new LinqCommand(entQuery, commandType, LinqCommandKind.DynamicSql, targetEnt);
var objResult = session.ExecuteLinqCommand(command);
return((int)objResult);
}
public LinqCommandInfo(LinqCommand command, QueryOptions options, LinqCommandFlags flags,
List <Type> entityTypes, string cacheKey, List <ParameterExpression> externalParameters,
List <LambdaExpression> includes)
{
CommandType = command.CommandType;
CommandKind = command.Kind;
Options = options;
Flags = flags;
EntityTypes = entityTypes;
CacheKey = cacheKey;
ExternalParameters = externalParameters;
Includes = includes;
}
public static void ScheduleNonQuery <TEntity>(this IEntitySession session,
IQueryable query, LinqCommandType commandType,
CommandSchedule schedule = CommandSchedule.TransactionEnd)
{
var entQuery = query as EntityQuery;
var model = session.Context.App.Model;
Util.Check(entQuery != null, "query parameter should an EntityQuery.");
var prov = entQuery.Provider as EntityQueryProvider;
var targetEnt = model.GetEntityInfo(typeof(TEntity));
Util.Check(targetEnt != null, "Generic parameter {0} is not an entity registered in the Model.", typeof(TEntity));
var command = new LinqCommand(entQuery, commandType, LinqCommandKind.DynamicSql, targetEnt);
LinqCommandAnalyzer.Analyze(model, command);
command.EvaluateLocalValues((EntitySession)session);
var scheduledCommand = new ScheduledLinqCommand()
{
Command = command, Schedule = schedule
};
var entSession = (EntitySession)session;
entSession.ScheduledCommands.Add(scheduledCommand);
}
public LinqCommand(EntityQuery query, LinqCommandType commandType, LinqCommandKind kind, EntityInfo targetEntity) {
Kind = kind;
CommandType = commandType;
Query = query;
TargetEntity = targetEntity;
}
