internal DbSelectStatement BuildInsertScalarStatement <TSource>(DataSet <TSource> dataSet, int rowOrdinal, IReadOnlyList <ColumnMapping> columnMappings)
where TSource : class, IEntity, new()
{
var sourceModel = dataSet._;
var parentMappings = ShouldJoinParent(dataSet) ? this.Model.GetParentRelationship(columnMappings) : null;
var paramManager = new ScalarParamManager(dataSet[rowOrdinal]);
var select = GetScalarMapping(paramManager, columnMappings);
IDbTable parentTable = null;
if (parentMappings != null)
{
parentTable = (IDbTable)Model.ParentModel.DataSource;
Debug.Assert(parentTable != null);
var parentRowIdMapping = new ColumnMapping(Model.GetSysParentRowIdColumn(createIfNotExist: false),
parentTable.Model.GetSysRowIdColumn(createIfNotExist: false));
select = select.Append(parentRowIdMapping);
}
DbFromClause from = GetScalarDataSource(paramManager, parentMappings);
DbExpression where = null;
if (from != null)
{
if (parentMappings != null)
{
from = new DbJoinClause(DbJoinKind.InnerJoin, from, parentTable.FromClause, parentMappings);
}
}
return(new DbSelectStatement(Model, select, from, where, null, -1, -1));
}
internal DbSelectStatement BuildDeleteScalarStatement(DataRow dataRow, IReadOnlyList <ColumnMapping> join)
{
var paramManager = new ScalarParamManager(dataRow);
var from = new DbJoinClause(DbJoinKind.InnerJoin, GetScalarDataSource(paramManager, join), FromClause, join);
return(new DbSelectStatement(Model, null, from, null, null, -1, -1));
}
public override void Visit(DbJoinClause join)
{
SqlBuilder.Append("(");
join.Left.Accept(this);
SqlBuilder.AppendLine();
SqlBuilder.AppendLine(join.Kind.ToSql());
join.Right.Accept(this);
GenerateJoinOnClause(join.On);
SqlBuilder.Append(")");
}
public override void Visit(DbJoinClause join)
{
join.Left.Accept(this);
join.Right.Accept(this);
}
/// <summary> /// Visits the <see cref="DbJoinClause"/>. /// </summary> /// <param name="join">The join clause.</param> /// <returns>The result.</returns> public abstract T Visit(DbJoinClause join);
/// <summary> /// Visits the <see cref="DbJoinClause"/>. /// </summary> /// <param name="join">The join clause.</param> public abstract void Visit(DbJoinClause join);
