public override object GetValue(SysExpression expr, EntityCache cache, ExpressionCache expr_cache, SysProcessInstance pi, SysActivityInstance ai)
{
SysProcess process = pi.Process;
if (process.ProcessEntity == null)
{
throw new ApplicationException("流程实体为空");
}
SysOneMoreRelation relation = expr.Relation;
if (relation == null)
{
throw new ApplicationException("表达式的关系为空");
}
if (!relation.ChildEntityId.HasValue)
{
throw new ApplicationException("表达式的子实体为空");
}
if (!process.EntityId.HasValue)
{
throw new ApplicationException("流程的实体为空");
}
if (expr.Relation.ChildEntityId.Value != process.EntityId.Value)
{
throw new ApplicationException("不正确的关系");
}
if (!relation.ParentEntityId.HasValue)
{
throw new ApplicationException("关系的父实体为空");
}
if (!relation.ChildFieldId.HasValue)
{
throw new ApplicationException("关系的ChildFieldId为空");
}
long local1 = relation.ChildFieldId.Value;
if (relation.ChildField == null)
{
throw new ApplicationException("关系的对应字段为空");
}
SysEntity processEntity = pi.Process.ProcessEntity;
int objectId = pi.ObjectId;
EntityData data = cache.GetObject(processEntity, objectId);
SysEntity parentEntity = relation.ParentEntity;
if (data.ContainsKey(relation.ChildField.FieldName))
{
int num2 = Convert.ToInt32(data[relation.ChildField.FieldName]);
if (num2 != 0)
{
object obj2 = cache.GetObject(parentEntity, num2)[expr.Field.FieldName];
expr_cache.Add(expr, obj2);
return(obj2);
}
}
throw new ApplicationException(string.Format("计算表达式时需要字段{0}，但其未赋值或为空", relation.ChildField.FieldName));
}
public override object GetValue(SysExpression expr, EntityCache cache, ExpressionCache expr_cache, SysProcessInstance pi, SysActivityInstance ai)
{
SysEntity processEntity = pi.Process.ProcessEntity;
int objectId = pi.ObjectId;
object obj2 = cache.GetObject(processEntity, objectId)[expr.Field.FieldName];
expr_cache.Add(expr, obj2);
return(obj2);
}
public override object GetValue(SysExpression expr, EntityCache cache, ExpressionCache expr_cache, SysProcessInstance pi, SysActivityInstance ai)
{
SysProcess process = pi.Process;
SysEntity activityEntity = process.ActivityEntity;
if (activityEntity == null)
{
throw new ApplicationException("活动实体为空");
}
SysOneMoreRelation relation = expr.Relation;
if (relation == null)
{
throw new ApplicationException("表达式的关系为空");
}
if (!relation.ChildEntityId.HasValue)
{
throw new ApplicationException("表达式的子实体为空");
}
if (!process.ActivityEntityId.HasValue)
{
throw new ApplicationException("活动的实体为空");
}
if (expr.Relation.ChildEntityId.Value != process.ActivityEntityId.Value)
{
throw new ApplicationException("不正确的关系");
}
if (!relation.ParentEntityId.HasValue)
{
throw new ApplicationException("关系的父实体为空");
}
if (!relation.ChildFieldId.HasValue)
{
throw new ApplicationException("关系的ChildFieldId为空");
}
long local1 = relation.ChildFieldId.Value;
if (relation.ChildField == null)
{
throw new ApplicationException("关系的对应字段为空");
}
int activityInstanceId = ai.ActivityInstanceId;
EntityData data = cache.GetObject(activityEntity, activityInstanceId);
SysEntity parentEntity = relation.ParentEntity;
int num2 = Convert.ToInt32(data[relation.ChildField.FieldName]);
object obj2 = cache.GetObject(parentEntity, num2)[expr.Field.FieldName];
expr_cache.Add(expr, obj2);
return(obj2);
}
public override object GetValue(SysExpression expr, EntityCache cache, ExpressionCache expr_cache, SysProcessInstance pi, SysActivityInstance ai)
{
if (!expr.DataType.HasValue)
{
throw new ApplicationException("未指定常量的数据类型");
}
if (string.IsNullOrWhiteSpace(expr.ConstValue))
{
throw new ApplicationException("未指定常量的值");
}
object obj2 = DataTypeHelper.GetHelper((DataTypeEnum)expr.DataType.Value).ConvertFromString(expr.ConstValue);
expr_cache.Add(expr, obj2);
return(obj2);
}
public override object GetValue(SysExpression expr, EntityCache cache, ExpressionCache expr_cache, SysProcessInstance pi, SysActivityInstance ai)
{
if (!expr.OperationType.HasValue)
{
throw new ApplicationException("操作类型为空");
}
if (!expr.LeftId.HasValue)
{
throw new ApplicationException("左变量为空");
}
if (!expr.RightId.HasValue)
{
throw new ApplicationException("右变量为空");
}
object obj2 = expr_cache.GetValue(expr.LeftId.Value);
object obj3 = expr_cache.GetValue(expr.RightId.Value);
ConstantExpression left = Expression.Constant(obj2);
ConstantExpression right = Expression.Constant(obj3);
object obj4 = Expression.Lambda(Expression.MakeBinary((ExpressionType)expr.OperationType.Value, left, right), new ParameterExpression[0]).Compile().DynamicInvoke(new object[0]);
expr_cache.Add(expr, obj4);
return(obj4);
}
public abstract object GetValue(SysExpression expr, EntityCache cache, ExpressionCache expr_cache, SysProcessInstance pi, SysActivityInstance ai);
