/// <summary>
/// Gets the queryable.
/// </summary>
/// <param name="entityType">Type of the entity.</param>
/// <param name="entityFields">The entity fields.</param>
/// <param name="attributes">The attributes.</param>
/// <param name="selectComponents">The select components.</param>
/// <param name="sortProperty">The sort property.</param>
/// <param name="dataViewFilterOverrides">The data view filter overrides.</param>
/// <param name="databaseTimeoutSeconds">The database timeout seconds.</param>
/// <param name="isCommunication">if set to <c>true</c> [is communication].</param>
/// <param name="errorMessages">The error messages.</param>
/// <param name="reportDbContext">The report database context.</param>
/// <returns></returns>
/// <exception cref="Exception"></exception>
public IQueryable GetQueryable(Type entityType, Dictionary <int, EntityField> entityFields, Dictionary <int, AttributeCache> attributes, Dictionary <int, ReportField> selectComponents, Rock.Web.UI.Controls.SortProperty sortProperty, DataViewFilterOverrides dataViewFilterOverrides, int?databaseTimeoutSeconds, bool isCommunication, out List <string> errorMessages, out System.Data.Entity.DbContext reportDbContext)
{
errorMessages = new List <string>();
reportDbContext = null;
if (entityType != null)
{
reportDbContext = Reflection.GetDbContextForEntityType(entityType);
IService serviceInstance = Reflection.GetServiceForEntityType(entityType, reportDbContext);
if (databaseTimeoutSeconds.HasValue)
{
reportDbContext.Database.CommandTimeout = databaseTimeoutSeconds.Value;
}
if (serviceInstance != null)
{
ParameterExpression paramExpression = serviceInstance.ParameterExpression;
MemberExpression idExpression = Expression.Property(paramExpression, "Id");
// Get AttributeValue queryable and parameter
var attributeValues = reportDbContext.Set <AttributeValue>();
ParameterExpression attributeValueParameter = Expression.Parameter(typeof(AttributeValue), "v");
// Create the dynamic type
var dynamicFields = new Dictionary <string, Type>();
dynamicFields.Add("Id", typeof(int));
foreach (var f in entityFields)
{
dynamicFields.Add(string.Format("Entity_{0}_{1}", f.Value.Name, f.Key), f.Value.PropertyType);
}
foreach (var a in attributes)
{
dynamicFields.Add(string.Format("Attribute_{0}_{1}", a.Value.Id, a.Key), a.Value.FieldType.Field.AttributeValueFieldType);
}
foreach (var reportField in selectComponents)
{
DataSelectComponent selectComponent = DataSelectContainer.GetComponent(reportField.Value.DataSelectComponentEntityType.Name);
if (selectComponent != null)
{
dynamicFields.Add(string.Format("Data_{0}_{1}", selectComponent.ColumnPropertyName, reportField.Key), selectComponent.ColumnFieldType);
var customSortProperties = selectComponent.SortProperties(reportField.Value.Selection);
if (customSortProperties != null)
{
foreach (var customSortProperty in customSortProperties.Split(','))
{
if (!string.IsNullOrWhiteSpace(customSortProperty))
{
var customSortPropertyType = entityType.GetPropertyType(customSortProperty);
dynamicFields.Add(string.Format("Sort_{0}_{1}", customSortProperty, reportField.Key), customSortPropertyType ?? typeof(string));
}
}
}
if (isCommunication && selectComponent is IRecipientDataSelect)
{
dynamicFields.Add($"Recipient_{selectComponent.ColumnPropertyName}_{reportField.Key}", ((IRecipientDataSelect)selectComponent).RecipientColumnFieldType);
}
}
}
if (dynamicFields.Count == 0)
{
errorMessages.Add("At least one field must be defined");
return(null);
}
Type dynamicType = LinqRuntimeTypeBuilder.GetDynamicType(dynamicFields);
ConstructorInfo methodFromHandle = dynamicType.GetConstructor(Type.EmptyTypes);
// Bind the dynamic fields to their expressions
var bindings = new List <MemberAssignment>();
bindings.Add(Expression.Bind(dynamicType.GetField("id"), idExpression));
foreach (var f in entityFields)
{
bindings.Add(Expression.Bind(dynamicType.GetField(string.Format("entity_{0}_{1}", f.Value.Name, f.Key)), Expression.Property(paramExpression, f.Value.Name)));
}
foreach (var a in attributes)
{
bindings.Add(Expression.Bind(dynamicType.GetField(string.Format("attribute_{0}_{1}", a.Value.Id, a.Key)), GetAttributeValueExpression(attributeValues, attributeValueParameter, idExpression, a.Value.Id)));
}
foreach (var reportField in selectComponents)
{
DataSelectComponent selectComponent = DataSelectContainer.GetComponent(reportField.Value.DataSelectComponentEntityType.Name);
if (selectComponent != null)
{
try
{
var componentExpression = selectComponent.GetExpression(reportDbContext, idExpression, reportField.Value.Selection ?? string.Empty);
if (componentExpression == null)
{
componentExpression = Expression.Constant(null, typeof(string));
}
bindings.Add(Expression.Bind(dynamicType.GetField(string.Format("data_{0}_{1}", selectComponent.ColumnPropertyName, reportField.Key)), componentExpression));
if (isCommunication && selectComponent is IRecipientDataSelect)
{
var recipientPersonIdExpression = ((IRecipientDataSelect)selectComponent).GetRecipientPersonIdExpression(reportDbContext, idExpression, reportField.Value.Selection ?? string.Empty);
if (recipientPersonIdExpression != null)
{
bindings.Add(Expression.Bind(dynamicType.GetField(string.Format("recipient_{0}_{1}", selectComponent.ColumnPropertyName, reportField.Key)), recipientPersonIdExpression));
}
}
var customSortProperties = selectComponent.SortProperties(reportField.Value.Selection);
if (!string.IsNullOrEmpty(customSortProperties))
{
foreach (var customSortProperty in customSortProperties.Split(','))
{
var customSortPropertyParts = customSortProperty.Split('.');
MemberInfo memberInfo = dynamicType.GetField(string.Format("sort_{0}_{1}", customSortProperty, reportField.Key));
Expression memberExpression = null;
foreach (var customSortPropertyPart in customSortPropertyParts)
{
memberExpression = Expression.Property(memberExpression ?? paramExpression, customSortPropertyPart);
}
bindings.Add(Expression.Bind(memberInfo, memberExpression));
}
}
}
catch (Exception ex)
{
throw new Exception(string.Format("Exception in {0}", selectComponent), ex);
}
}
}
ConstructorInfo constructorInfo = dynamicType.GetConstructor(Type.EmptyTypes);
NewExpression newExpression = Expression.New(constructorInfo);
MemberInitExpression memberInitExpression = Expression.MemberInit(newExpression, bindings);
LambdaExpression selector = Expression.Lambda(memberInitExpression, paramExpression);
// NOTE: having a NULL Dataview is OK.
Expression whereExpression = null;
if (this.DataView != null)
{
whereExpression = this.DataView.GetExpression(serviceInstance, paramExpression, dataViewFilterOverrides, out errorMessages);
}
MethodInfo getMethod = serviceInstance.GetType().GetMethod("Get", new Type[] { typeof(ParameterExpression), typeof(Expression), typeof(Rock.Web.UI.Controls.SortProperty), typeof(int?) });
if (getMethod != null)
{
var getResult = getMethod.Invoke(serviceInstance, new object[] { paramExpression, whereExpression, null, null });
var qry = getResult as IQueryable <IEntity>;
var qryExpression = qry.Expression;
// apply the OrderBy clauses to the Expression from whatever columns are specified in sortProperty.Property
string orderByMethod = "OrderBy";
if (sortProperty == null)
{
// if no sorting was specified, sort by Id
sortProperty = new Web.UI.Controls.SortProperty {
Direction = SortDirection.Ascending, Property = "Id"
};
}
/*
* NOTE: The sort property sorting rules can be a little confusing. Here is how it works:
* - SortProperty.Direction of Ascending means sort exactly as what the Columns specification says
* - SortProperty.Direction of Descending means sort the _opposite_ of what the Columns specification says
* Examples:
* 1) SortProperty.Property "LastName desc, FirstName, BirthDate desc" and SortProperty.Direction = Ascending
* OrderBy should be: "order by LastName desc, FirstName, BirthDate desc"
* 2) SortProperty.Property "LastName desc, FirstName, BirthDate desc" and SortProperty.Direction = Descending
* OrderBy should be: "order by LastName, FirstName desc, BirthDate"
*/
foreach (var column in sortProperty.Property.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries))
{
string propertyName;
var direction = sortProperty.Direction;
if (column.EndsWith(" desc", StringComparison.OrdinalIgnoreCase))
{
propertyName = column.Left(column.Length - 5);
// if the column ends with " desc", toggle the direction if sortProperty is Descending
direction = sortProperty.Direction == SortDirection.Ascending ? SortDirection.Descending : SortDirection.Ascending;
}
else
{
propertyName = column;
}
string methodName = direction == SortDirection.Descending ? orderByMethod + "Descending" : orderByMethod;
// Call OrderBy on whatever the Expression is for that Column
var sortMember = bindings.FirstOrDefault(a => a.Member.Name.Equals(propertyName, StringComparison.OrdinalIgnoreCase));
LambdaExpression sortSelector = Expression.Lambda(sortMember.Expression, paramExpression);
qryExpression = Expression.Call(typeof(Queryable), methodName, new Type[] { qry.ElementType, sortSelector.ReturnType }, qryExpression, sortSelector);
orderByMethod = "ThenBy";
}
var selectExpression = Expression.Call(typeof(Queryable), "Select", new Type[] { qry.ElementType, dynamicType }, qryExpression, selector);
var query = qry.Provider.CreateQuery(selectExpression).AsNoTracking();
// cast to a dynamic so that we can do a Queryable.Take (the compiler figures out the T in IQueryable at runtime)
dynamic dquery = query;
if (FetchTop.HasValue)
{
dquery = Queryable.Take(dquery, FetchTop.Value);
}
return(dquery as IQueryable);
}
}
}
return(null);
}
/// <summary>
/// Gets the data source.
/// </summary>
/// <param name="context">The context.</param>
/// <param name="entityType">Type of the entity.</param>
/// <param name="entityFields">The entity fields.</param>
/// <param name="attributes">The attributes.</param>
/// <param name="selectComponents">The select components.</param>
/// <param name="sortProperty">The sort property.</param>
/// <param name="errorMessages">The error messages.</param>
/// <returns></returns>
public List <object> GetDataSource(RockContext context, Type entityType, Dictionary <int, EntityField> entityFields, Dictionary <int, AttributeCache> attributes, Dictionary <int, ReportField> selectComponents, Rock.Web.UI.Controls.SortProperty sortProperty, out List <string> errorMessages)
{
errorMessages = new List <string>();
if (entityType != null)
{
Type[] modelType = { entityType };
Type genericServiceType = typeof(Rock.Data.Service <>);
Type modelServiceType = genericServiceType.MakeGenericType(modelType);
object serviceInstance = Activator.CreateInstance(modelServiceType, new object[] { context });
if (serviceInstance != null)
{
ParameterExpression paramExpression = serviceInstance.GetType().GetProperty("ParameterExpression").GetValue(serviceInstance) as ParameterExpression;
MemberExpression idExpression = Expression.Property(paramExpression, "Id");
// Get AttributeValue queryable and parameter
var attributeValues = context.Set <AttributeValue>();
ParameterExpression attributeValueParameter = Expression.Parameter(typeof(AttributeValue), "v");
// Create the dynamic type
var dynamicFields = new Dictionary <string, Type>();
foreach (var f in entityFields)
{
dynamicFields.Add(string.Format("Entity_{0}_{1}", f.Value.Name, f.Key), f.Value.PropertyType);
}
foreach (var a in attributes)
{
dynamicFields.Add(string.Format("Attribute_{0}_{1}", a.Value.Id, a.Key), typeof(string));
}
foreach (var reportField in selectComponents)
{
DataSelectComponent selectComponent = DataSelectContainer.GetComponent(reportField.Value.DataSelectComponentEntityType.Name);
if (selectComponent != null)
{
dynamicFields.Add(string.Format("Data_{0}_{1}", selectComponent.ColumnPropertyName, reportField.Key), selectComponent.ColumnFieldType);
}
}
if (dynamicFields.Count == 0)
{
errorMessages.Add("At least one field must be defined");
return(null);
}
Type dynamicType = LinqRuntimeTypeBuilder.GetDynamicType(dynamicFields);
ConstructorInfo methodFromHandle = dynamicType.GetConstructor(Type.EmptyTypes);
// Bind the dynamic fields to their expressions
var bindings = new List <MemberBinding>();
foreach (var f in entityFields)
{
bindings.Add(Expression.Bind(dynamicType.GetField(string.Format("entity_{0}_{1}", f.Value.Name, f.Key)), Expression.Property(paramExpression, f.Value.Name)));
}
foreach (var a in attributes)
{
bindings.Add(Expression.Bind(dynamicType.GetField(string.Format("attribute_{0}_{1}", a.Value.Id, a.Key)), GetAttributeValueExpression(attributeValues, attributeValueParameter, idExpression, a.Value.Id)));
}
foreach (var reportField in selectComponents)
{
DataSelectComponent selectComponent = DataSelectContainer.GetComponent(reportField.Value.DataSelectComponentEntityType.Name);
if (selectComponent != null)
{
bindings.Add(Expression.Bind(dynamicType.GetField(string.Format("data_{0}_{1}", selectComponent.ColumnPropertyName, reportField.Key)), selectComponent.GetExpression(context, idExpression, reportField.Value.Selection)));
}
}
ConstructorInfo constructorInfo = dynamicType.GetConstructor(Type.EmptyTypes);
NewExpression newExpression = Expression.New(constructorInfo);
MemberInitExpression memberInitExpression = Expression.MemberInit(newExpression, bindings);
Expression selector = Expression.Lambda(memberInitExpression, paramExpression);
Expression whereExpression = this.DataView.GetExpression(serviceInstance, paramExpression, out errorMessages);
MethodInfo getMethod = serviceInstance.GetType().GetMethod("Get", new Type[] { typeof(ParameterExpression), typeof(Expression), typeof(Rock.Web.UI.Controls.SortProperty) });
if (getMethod != null)
{
var getResult = getMethod.Invoke(serviceInstance, new object[] { paramExpression, whereExpression, sortProperty });
var qry = getResult as IQueryable <IEntity>;
var selectExpression = Expression.Call(typeof(Queryable), "Select", new Type[] { qry.ElementType, dynamicType }, Expression.Constant(qry), selector);
var query = qry.Provider.CreateQuery(selectExpression).AsNoTracking();
// enumerate thru the query results and put into a list
var reportResult = new List <object>();
var enumerator = query.GetEnumerator();
while (enumerator.MoveNext())
{
reportResult.Add(enumerator.Current);
}
return(reportResult);
}
}
}
return(null);
}