/// <summary>
/// Creates a new copy of the specified parameter collection containing copies of its element <see cref="ObjectParameter"/>s.
/// If the specified argument is <c>null</c>, then <c>null</c> is returned.
/// </summary>
/// <param name="copyParams">The parameter collection to copy</param>
/// <returns>The new collection containing copies of <paramref name="copyParams"/> parameters, if <paramref name="copyParams"/> is non-null; otherwise <c>null</c>.</returns>
internal static ObjectParameterCollection DeepCopy(ObjectParameterCollection copyParams)
{
if (null == copyParams)
{
return(null);
}
ObjectParameterCollection retParams = new ObjectParameterCollection(copyParams._perspective);
foreach (ObjectParameter param in copyParams)
{
retParams.Add(param.ShallowCopy());
}
return(retParams);
}
/// <summary>
/// Initializes a new query EntitySqlQueryState instance.
/// </summary>
/// <param name="context">
/// The ObjectContext containing the metadata workspace the query was
/// built against, the connection on which to execute the query, and the
/// cache to store the results in. Must not be null.
/// </param>
/// <param name="commandText">
/// The Entity-SQL text of the query
/// </param>
/// <param name="expression">
/// Optional <see cref="DbExpression"/> that defines the query. Must be semantically equal to the <paramref name="commandText"/>.
/// </param>
/// <param name="mergeOption">
/// The merge option to use when retrieving results if an explicit merge option is not specified
/// </param>
internal EntitySqlQueryState(Type elementType, string commandText, DbExpression expression, bool allowsLimit, ObjectContext context, ObjectParameterCollection parameters, Span span)
: base(elementType, context, parameters, span)
{
EntityUtil.CheckArgumentNull(commandText, "commandText");
if (string.IsNullOrEmpty(commandText))
{
throw EntityUtil.Argument(System.Data.Entity.Strings.ObjectQuery_InvalidEmptyQuery, "commandText");
}
_queryText = commandText;
_queryExpression = expression;
_allowsLimit = allowsLimit;
}
/// <summary>
/// Initializes a new query EntitySqlQueryState instance.
/// </summary>
/// <param name="context">
/// The ObjectContext containing the metadata workspace the query was
/// built against, the connection on which to execute the query, and the
/// cache to store the results in. Must not be null.
/// </param>
/// <param name="commandText">
/// The Entity-SQL text of the query
/// </param>
/// <param name="mergeOption">
/// The merge option to use when retrieving results if an explicit merge option is not specified
/// </param>
internal EntitySqlQueryState(Type elementType, string commandText, bool allowsLimit, ObjectContext context, ObjectParameterCollection parameters, Span span)
: this(elementType, commandText, /*expression*/ null, allowsLimit, context, parameters, span)
{
}
internal override ObjectQueryState Include <TElementType>(ObjectQuery <TElementType> sourceQuery, string includePath)
{
ObjectQueryState retState = new EntitySqlQueryState(this.ElementType, _queryText, _queryExpression, _allowsLimit, this.ObjectContext, ObjectParameterCollection.DeepCopy(this.Parameters), Span.IncludeIn(this.Span, includePath));
this.ApplySettingsTo(retState);
return(retState);
}
