private static String CreateWhere(ProjectFilter filter)
{
var where = new StringBuilder("1 = 1");
if (filter.CompanyContactID.HasValue)
where.Append(" AND Project.fk_CompanyContactID = @CompanyContactID");
return where.ToString();
}
public static async Task<Int32> CountAsync(this DbSet<Project> dbSet, ProjectFilter filter)
{
const String query = @"SELECT CAST(COUNT(*) AS INT) FROM p.Project WHERE {0}";
String where = CreateWhere(filter);
String curQuery = String.Format(query, where);
ICollection<SqlParameter> parameters = CreateParameters(filter);
return await GitTimeContext.GetContext(dbSet).Database.SqlQuery<Int32>(curQuery, parameters.ToArray()).FirstOrDefaultAsync();
}
public static async Task<ICollection<ProjectFinderRow>> SelectFinderRowsAsync(this DbSet<Project> dbSet, Int32 startRow, Int32 endRow, ProjectFilter filter, String sortExpression)
{
const String query = @"
WITH Project AS
(
SELECT
Project.pk_ID AS ProjectID
,Project.Name AS ProjectName
,Project.Repository
,Company.Name AS CompanyName
,ROW_NUMBER() OVER (ORDER BY {1}) AS RowNumber
FROM
p.Project
INNER JOIN c.Contact AS Company ON Company.pk_ID = Project.fk_CompanyContactID
WHERE
{0}
)
SELECT * FROM Project
WHERE RowNumber BETWEEN @StartRow AND @EndRow
ORDER BY RowNumber
";
if (String.IsNullOrEmpty(sortExpression))
sortExpression = "ProjectName";
String rowNumberOrderBy = sortExpression
.Replace("ProjectName", "Project.Name")
;
String where = CreateWhere(filter);
String curQuery = String.Format(query, where, rowNumberOrderBy);
ICollection<SqlParameter> parameters = CreateParameters(filter);
GitTimeContext.AddParameter("@StartRow", SqlDbType.Int, startRow, parameters);
GitTimeContext.AddParameter("@EndRow", SqlDbType.Int, endRow, parameters);
return await GitTimeContext.GetContext(dbSet).Database.SqlQuery<ProjectFinderRow>(curQuery, parameters.ToArray()).ToListAsync();
}
private static ICollection<SqlParameter> CreateParameters(ProjectFilter filter)
{
var parameters = new List<SqlParameter>();
if (filter.CompanyContactID.HasValue)
GitTimeContext.AddParameter("@CompanyContactID", SqlDbType.Int, filter.CompanyContactID, parameters);
return parameters;
}