/// <summary>
///
/// </summary>
/// <param name="context"></param>
/// <param name="queryBuilder"></param>
/// <param name="record"> </param>
/// <param name="modifiedProperties"></param>
protected override void DoToUpdateStatement(IMansionContext context, ModificationQueryBuilder queryBuilder, Record record, IPropertyBag modifiedProperties)
{
// check if the property is not modified
int newOrder;
if (!modifiedProperties.TryGet(context, PropertyName, out newOrder))
return;
// check if the record contains a pointer
NodePointer pointer;
if (!record.TryGet(context, "pointer", out pointer))
throw new InvalidOperationException("Could not update this record because it did not contain a pointer");
// don't update order for root nodes
if (pointer.Depth == 1)
return;
// do not allow values smaller than 1
if (newOrder < 1)
throw new InvalidOperationException("Can not set orders smaller than 1");
// assemble parameter
var newOrderParameterName = queryBuilder.AddParameter("newOrder", newOrder, DbType.Int32);
var oldOrderParameterName = queryBuilder.AddParameter("oldOrder", record.Get<int>(context, PropertyName), DbType.Int32);
var parentIdParameterName = queryBuilder.AddParameter("parentId", pointer.Parent.Id, DbType.Int32);
// update the orders before updating the order of the current node
queryBuilder.PrependQuery(string.Format("UPDATE [Nodes] SET [order] = [order] + 1 WHERE (parentId = {0}) AND ([order] < {1} AND [order] >= {2})", parentIdParameterName, oldOrderParameterName, newOrderParameterName));
queryBuilder.PrependQuery(string.Format("UPDATE [Nodes] SET [order] = [order] - 1 WHERE (parentId = {0}) AND ([order] > {1} AND [order] <= {2})", parentIdParameterName, oldOrderParameterName, newOrderParameterName));
// update the column
queryBuilder.AddColumnValue(PropertyName, newOrderParameterName);
}
/// <summary>
///
/// </summary>
/// <param name="context"></param>
/// <param name="queryBuilder"></param>
/// <param name="properties"></param>
protected override void DoToInsertStatement(IMansionContext context, ModificationQueryBuilder queryBuilder, IPropertyBag properties)
{
// build the select max order + 1 query only for none root nodes
var newPointer = properties.Get<NodePointer>(context, "_newPointer");
queryBuilder.PrependQuery("DECLARE @order int = 1");
if (newPointer.Depth > 1)
queryBuilder.PrependQuery(string.Format("SET @order = (SELECT ISNULL(MAX([order]) + 1, 1) FROM [Nodes] WHERE [parentId] = {0})", queryBuilder.AddParameter("parentId", newPointer.Parent.Id, DbType.Int32)));
// add the column
queryBuilder.AddColumnValue(PropertyName, "@order");
}
/// <summary>
/// Generates the insert statement for this table.
/// </summary>
/// <param name="context"></param>
/// <param name="queryBuilder"></param>
/// <param name="properties"></param>
protected override void DoToInsertStatement(IMansionContext context, ModificationQueryBuilder queryBuilder, IPropertyBag properties)
{
// create a table modification query
var tableModificationQuery = new ModificationQueryBuilder(queryBuilder);
foreach (var column in Columns)
column.ToInsertStatement(context, tableModificationQuery, properties);
// if there are no modified column add table modification query to the master query builder
if (!tableModificationQuery.HasModifiedColumns)
return;
queryBuilder.PrependQuery("DECLARE @ScopeIdentity AS int");
queryBuilder.AppendQuery(tableModificationQuery.ToInsertStatement(Name));
queryBuilder.AppendQuery("SET @ScopeIdentity = SCOPE_IDENTITY()");
}
/// <summary>
///
/// </summary>
/// <param name="context"></param>
/// <param name="queryBuilder"></param>
/// <param name="properties"></param>
protected override void DoToInsertStatement(IMansionContext context, ModificationQueryBuilder queryBuilder, IPropertyBag properties)
{
// allow identity insert on special cases, most likely used when fixing the repository integrity
if (!properties.Get(context, "_allowIdenityInsert", false))
return;
queryBuilder.PrependQuery("SET IDENTITY_INSERT [dbo].[Nodes] ON;");
// get the value of the column
var value = properties.Get<object>(context, PropertyName);
// add the parameter
var parameterName = queryBuilder.AddParameter(ColumnName, value);
// set the column value
queryBuilder.AddColumnValue(ColumnName, parameterName);
queryBuilder.AppendQuery("SET IDENTITY_INSERT [dbo].[Nodes] OFF;");
}
