/// <summary>
/// This initializes the tgDataRequest for the query.
/// </summary>
/// <param name="request">The request to populate.</param>
protected void PopulateRequest(tgDataRequest request)
{
IMetadata meta = this.Meta;
tgConnection conn = this.tg2.Connection;
tgProviderSpecificMetadata providerMetadata = meta.GetProviderMetadata(conn.ProviderMetadataKey);
IDynamicQuerySerializableInternal iQuery = this as IDynamicQuerySerializableInternal;
if ((this.queries != null && this.queries.Count > 0) || iQuery.InternalSetOperations != null)
{
AssignProviderMetadata(this, new List <tgDynamicQuerySerializable>());
}
string catalog = conn.Catalog;
string schema = conn.Schema;
iData.Catalog = catalog;
iData.Schema = schema;
iData.DataID = meta.DataID;
iData.ProviderMetadata = providerMetadata;
iData.Columns = meta.Columns;
request.ConnectionString = conn.ConnectionString;
request.CommandTimeout = conn.CommandTimeout;
request.QueryType = tgQueryType.DynamicQuery;
request.DynamicQuery = this;
request.DataID = meta.DataID;
request.ProviderMetadata = providerMetadata;
request.Catalog = catalog;
request.Schema = schema;
request.Columns = meta.Columns;
if (this.m_selectAll)
{
_selectAll();
}
if (tg.QuerySource == null || tg.QuerySource.Length == 0)
{
tg.QuerySource = providerMetadata.Source;
}
}
public tgConnection ConnectionServiceOverride(string connectionName)
{
if (this.connection == null)
{
this.connection = new tgConnection();
this.connection.Name = connectionName;
}
return this.connection;
}
/// <summary>
///
/// </summary>
private void AssignProviderMetadata(tgDynamicQuerySerializable query, List <tgDynamicQuerySerializable> beenThere)
{
if (beenThere.Contains(query))
{
return;
}
beenThere.Add(query);
tgDynamicQuery theQuery = query as tgDynamicQuery;
IDynamicQuerySerializableInternal iQuery = query as IDynamicQuerySerializableInternal;
if (theQuery != null)
{
tgConnection conn = theQuery.tg2.Connection;
if (iQuery.ProviderMetadata == null)
{
tgProviderSpecificMetadata providerMetadata = theQuery.Meta.GetProviderMetadata(conn.ProviderMetadataKey);
iQuery.DataID = theQuery.Meta.DataID;
iQuery.Columns = theQuery.Meta.Columns;
iQuery.ProviderMetadata = providerMetadata;
}
iQuery.Catalog = conn.Catalog;
iQuery.Schema = conn.Schema;
}
// This code is for proxies as they are unable to work with column and provider metadata
// until serialized back to the server
if (iQuery.SelectAll)
{
foreach (tgColumnMetadata col in (tgColumnMetadataCollection)iQuery.Columns)
{
tgQueryItem item = new tgQueryItem(this, col.Name, col.esType);
query.Select(item);
}
}
else
{
List <tgQueryItem> columns = iQuery.SelectAllExcept;
if (columns != null)
{
foreach (tgColumnMetadata col in (tgColumnMetadataCollection)iQuery.Columns)
{
bool found = false;
for (int i = 0; i < columns.Count; i++)
{
if (col.Name == (string)columns[i])
{
found = true;
break;
}
}
if (found)
{
continue;
}
tgExpression item = new tgQueryItem(this, col.Name, col.esType);
query.Select(item);
}
}
}
foreach (tgDynamicQuerySerializable subQuery in iQuery.queries.Values)
{
AssignProviderMetadata(subQuery, beenThere);
}
if (iQuery.InternalSetOperations != null)
{
foreach (tgSetOperation setOperation in iQuery.InternalSetOperations)
{
AssignProviderMetadata(setOperation.Query, beenThere);
}
}
}
