/// <summary>
/// Returns a <see cref="DataSet"/> built based on the specified <see cref="DataSetDescriptor"/>
/// </summary>
/// <param name="dataSetDescriptor">The <see cref="DataSetDescriptor"/> to use</param>
/// <param name="databaseBridge">The <see cref="IDatabaseBridge"/> to use</param>
/// <returns>A <see cref="DataSet"/> built based on the specified <see cref="DataSetDescriptor"/></returns>
public static DataSet BuilDataSet(DataSetDescriptor dataSetDescriptor, IDatabaseBridge databaseBridge)
{
if (dataSetDescriptor == null)
{
throw new ArgumentNullException(nameof(dataSetDescriptor));
}
if (databaseBridge == null)
{
throw new ArgumentNullException(nameof(databaseBridge));
}
return(new DataSetBuilder(dataSetDescriptor, databaseBridge).Build());
}
/// <summary>
/// Initializes a new instance of the <see cref="DataSetBuilder"/> class
/// </summary>
/// <param name="dataSetDescriptor">The data set descriptor</param>
/// <param name="databaseBridge">The database bridge</param>
private DataSetBuilder(DataSetDescriptor dataSetDescriptor, IDatabaseBridge databaseBridge)
{
if (dataSetDescriptor == null)
{
throw new ArgumentNullException(nameof(dataSetDescriptor));
}
if (databaseBridge == null)
{
throw new ArgumentNullException(nameof(databaseBridge));
}
_dataSetDescriptor = dataSetDescriptor;
_databaseBridge = databaseBridge;
}
/// <summary>
/// Returns a new <see cref="TOLAPCube"/> built based on the specified parameters
/// </summary>
/// <param name="config">The cube constructor config document</param>
/// <param name="dataSetDescriptor">The data set descriptor</param>
/// <param name="dataSet">The data set</param>
/// <returns>A new <see cref="TOLAPCube"/> built based on the specified parameters</returns>
public static TOLAPCube BuildCube(XElement config, DataSetDescriptor dataSetDescriptor, DataSet dataSet)
{
if (config == null)
{
throw new ArgumentNullException(nameof(config));
}
if (dataSetDescriptor == null)
{
throw new ArgumentNullException(nameof(dataSetDescriptor));
}
if (dataSet == null)
{
throw new ArgumentNullException(nameof(dataSet));
}
return(new OlapCubeBuilder(config, dataSetDescriptor, dataSet).Build());
}
/// <summary>
/// Returns a <see cref="DataSetDescriptor"/> read from the specified XML document
/// </summary>
/// <param name="doc">The XML document to read a <see cref="DataSetDescriptor"/> from</param>
/// <returns>A <see cref="DataSetDescriptor"/> read from the specified XML document</returns>
private static DataSetDescriptor CreateDataSetDescriptor(XElement doc)
{
var connectionString = (string)doc.Attribute("connectionString");
if (connectionString == null)
{
throw new InvalidOperationException("Attribute 'connectionString' is missing in element 'Cube'");
}
var userName = (string)doc.Attribute("userName");
if (userName == null)
{
throw new InvalidOperationException("Attribute 'userName' is missing in element 'Cube'");
}
var dataSetDesc = new DataSetDescriptor(connectionString, userName);
var ns = doc.Name.Namespace;
var dataSetTag = doc.Element(ns + "DataSet");
if (dataSetTag == null)
{
throw new InvalidOperationException("Element 'DataSet' is missing in element 'Cube'");
}
foreach (var mj in dataSetTag.Elements(ns + "MultiJoin"))
{
var multiJoin = ReadMultiJoinDescriptor(ns, mj);
dataSetDesc.AddTable(multiJoin);
}
foreach (var t in dataSetTag.Elements(ns + "Table"))
{
var table = ReadTableDescriptor(ns, t);
dataSetDesc.AddTable(table);
}
ValidateReferences(dataSetDesc);
return(dataSetDesc);
}
/// <summary>
/// Initializes a new instance of the <see cref="OlapCubeBuilder"/> class
/// </summary>
/// <param name="config">The cube constructor config document</param>
/// <param name="dataSetDescriptor">The data set descriptor</param>
/// <param name="dataSet">The data set</param>
private OlapCubeBuilder(XElement config, DataSetDescriptor dataSetDescriptor, DataSet dataSet)
{
if (config == null)
{
throw new ArgumentNullException(nameof(config));
}
if (dataSetDescriptor == null)
{
throw new ArgumentNullException(nameof(dataSetDescriptor));
}
if (dataSet == null)
{
throw new ArgumentNullException(nameof(dataSet));
}
_config = config;
_dataSetDescriptor = dataSetDescriptor;
_dataSet = dataSet;
}
/// <summary>
/// Validates the 'references' attributes of the specified <see cref="DataSetDescriptor"/>
/// </summary>
/// <param name="dataSetDescriptor">The <see cref="DataSetDescriptor"/> to validate</param>
private static void ValidateReferences(DataSetDescriptor dataSetDescriptor)
{
foreach (var kvp in dataSetDescriptor.Tables)
{
var multijoin = kvp.Value as MultiJoinDescriptor;
if (multijoin != null)
{
foreach (var td in multijoin.Tables)
{
foreach (var fd in td.GetForeignKeys())
{
if (!dataSetDescriptor.Tables.ContainsKey(fd.References))
{
throw new InvalidOperationException(
$"Field '{fd}' of table '{td}' in multijoin '{multijoin.Name}' references table '{fd.References}' which does not exist");
}
if (dataSetDescriptor.Tables[fd.References].GetPrimaryKey() == null)
{
throw new InvalidOperationException(
$"Field '{fd}' of table '{td}' in multijoin '{multijoin.Name}' references table '{fd.References}' which does not have the PK");
}
}
}
//var mainTable = multijoin
// .Tables
// .SingleOrDefault(
// td => td.Name.Equals(multijoin.PrimaryKey, StringComparison.OrdinalIgnoreCase));
//if (mainTable == null)
// throw new InvalidOperationException(
// $"Table '{multijoin.PrimaryKey}' does not exist in multijoin '{multijoin.Name}' to use its PK");
//if (mainTable.GetPrimaryKey() == null)
// throw new InvalidOperationException(
// $"Table '{mainTable}' does not have the PK to use it in multijoin '{multijoin.Name}'");
if (multijoin
.Tables
.SelectMany(td => td.Fields.Values)
.Any(fd => fd.AliasOrName.Equals(multijoin.PrimaryKey, StringComparison.OrdinalIgnoreCase)))
{
throw new InvalidOperationException(
$"PK column name '{multijoin.PrimaryKey}' in multijoin '{multijoin.Name}' causes a name conflict");
}
}
else
{
foreach (var fd in kvp.Value.GetForeignKeys())
{
if (!dataSetDescriptor.Tables.ContainsKey(fd.References))
{
throw new InvalidOperationException(
$"Field '{fd}' of table '{kvp.Value.Name}' references table '{fd.References}' which does not exist");
}
if (dataSetDescriptor.Tables[fd.References].GetPrimaryKey() == null)
{
throw new InvalidOperationException(
$"Field '{fd}' of table '{kvp.Value.Name}' references table '{fd.References}' which does not have the PK");
}
}
}
}
}
