/// <summary>
/// Add a Select clause to a query; may need to create a new subquery.
/// </summary>
/// <param name="select">Select clause to add.</param>
/// <param name="inScope">Set of parameter names in scope.</param>
/// <param name="currentCollection">Current input collection.</param>
/// <param name="subqueryBinding">The subquery binding information.</param>
/// <returns>A new query containing a select clause.</returns>
public QueryUnderConstruction AddSelectClause(SqlSelectClause select, HashSet <ParameterExpression> inScope, Collection currentCollection, TranslationContext.SubqueryBinding subqueryBinding)
{
QueryUnderConstruction result = this;
if (subqueryBinding.ShouldBeOnNewQuery)
{
result = this.PackageQuery(inScope, currentCollection);
subqueryBinding.ShouldBeOnNewQuery = false;
}
// If result SelectClause is not null, or both result selectClause and select has Distinct
// then it is unexpected since the SelectClause will be overwritten.
if (!((result.selectClause != null && result.selectClause.HasDistinct && selectClause.HasDistinct) ||
result.selectClause == null))
{
throw new DocumentQueryException("Internal error: attempting to overwrite SELECT clause");
}
result.selectClause = select;
foreach (Binding binding in subqueryBinding.TakeBindings())
{
result.AddBinding(binding);
}
return(result);
}
public QueryUnderConstruction AddOrderByClause(SqlOrderbyClause orderBy, TranslationContext context)
{
QueryUnderConstruction result = context.PackageCurrentQueryIfNeccessary();
result.orderByClause = orderBy;
foreach (Binding binding in context.CurrentSubqueryBinding.TakeBindings())
{
result.AddBinding(binding);
}
return(result);
}
/// <summary>
/// Add a Where clause to a query; may need to create a new query.
/// </summary>
/// <param name="whereClause">Clause to add.</param>
/// <param name="context">The translation context.</param>
/// <returns>A new query containing the specified Where clause.</returns>
public QueryUnderConstruction AddWhereClause(SqlWhereClause whereClause, TranslationContext context)
{
QueryUnderConstruction result = context.PackageCurrentQueryIfNeccessary();
whereClause = QueryUnderConstruction.CombineWithConjunction(result.whereClause, whereClause);
result.whereClause = whereClause;
foreach (Binding binding in context.CurrentSubqueryBinding.TakeBindings())
{
result.AddBinding(binding);
}
return(result);
}
public QueryUnderConstruction AddOrderByClause(SqlOrderbyClause orderBy, TranslationContext context)
{
QueryUnderConstruction result = this;
if (context.CurrentSubqueryBinding.ShouldBeOnNewQuery)
{
result = this.PackageQuery(context.InScope, context.PeekCollection());
context.CurrentSubqueryBinding.ShouldBeOnNewQuery = false;
}
result.orderByClause = orderBy;
foreach (Binding binding in context.CurrentSubqueryBinding.TakeBindings())
{
result.AddBinding(binding);
}
return(result);
}
/// <summary>
/// Add a Where clause to a query; may need to create a new query.
/// </summary>
/// <param name="whereClause">Clause to add.</param>
/// <param name="context">The translation context.</param>
/// <returns>A new query containing the specified Where clause.</returns>
public QueryUnderConstruction AddWhereClause(SqlWhereClause whereClause, TranslationContext context)
{
QueryUnderConstruction result = this;
if (this.ShouldBeOnNewQuery(LinqMethods.Where, 2))
{
result = this.PackageQuery(context.InScope, context.PeekCollection());
context.CurrentSubqueryBinding.ShouldBeOnNewQuery = false;
}
whereClause = QueryUnderConstruction.CombineWithConjunction(result.whereClause, whereClause);
result.whereClause = whereClause;
foreach (Binding binding in context.CurrentSubqueryBinding.TakeBindings())
{
result.AddBinding(binding);
}
return(result);
}
/// <summary>
/// Add a Select clause to a query; may need to create a new subquery.
/// </summary>
/// <param name="select">Select clause to add.</param>
/// <param name="context">The translation context.</param>
/// <returns>A new query containing a select clause.</returns>
public QueryUnderConstruction AddSelectClause(SqlSelectClause select, TranslationContext context)
{
QueryUnderConstruction result = context.PackageCurrentQueryIfNeccessary();
// If result SelectClause is not null, or both result selectClause and select has Distinct
// then it is unexpected since the SelectClause will be overwritten.
if (!((result.selectClause != null && result.selectClause.HasDistinct && selectClause.HasDistinct) ||
result.selectClause == null))
{
throw new DocumentQueryException("Internal error: attempting to overwrite SELECT clause");
}
result.selectClause = select;
foreach (Binding binding in context.CurrentSubqueryBinding.TakeBindings())
{
result.AddBinding(binding);
}
return(result);
}
