public ColumnWithAliasSourceQueryExpression(string columnName, IAliasIdentifier sourceIdentifier,
SqlStorageField sqlStorageField) : base(columnName, sourceIdentifier == null ? null : new AliasReferenceQueryExpression(sourceIdentifier))
{
ColumnName = columnName;
SourceIdentifier = sourceIdentifier;
SqlStorageField = sqlStorageField;
}
public ModelState(SqlDataModelBuilder modelBuilder, IReadOnlyList <string> basePath,
SqlStorageField <TEntity> foreignKeyField)
{
SqlFieldConfigurations = modelBuilder.ModelledFields;
BasePath = basePath;
JoinSpecification = new JoinSpecification <TEntity>(foreignKeyField.JoinSpecification, typeof(T),
$"_{string.Join("_", basePath)}", new JoinColumnPair(
foreignKeyField.ColumnName,
SqlFieldConfigurations.First(q => q.Options.IsPrimaryKey).Options.ColumnName
));
}
public void OrElse <TValue>(SqlStorageField <TEntity, TValue> field, SqlComparisonOperator comparisonType, TValue value)
{
if (field.RequiresJoin)
{
foreach (var(joinBuilder, _) in field.JoinSpecification.CreateJoin(_dataSchema, field, _tableIdentifier))
{
AddJoin(joinBuilder);
}
}
_expression = _expression.OrElse(
CreateComparison(
QueryExpression.Column(field.ColumnName),
comparisonType,
QueryExpression.Value(value)
));
}
public IResultMapper <T> Select <T>(SqlStorageField <TEntity, T> field)
{
var alias = $"__AutoAlias_{_projectionExpressions.Count}";
_projectionExpressions.Add(
alias,
QueryExpression.As(
QueryExpression.Column(field.ColumnName),
alias, out var _)
);
if (field.RequiresJoin)
{
_joinBuilders.AddRange(
field.JoinSpecification.CreateJoin(_dataSchema, field, _tableIdentifier)
.Select(q => q.Builder)
);
}
return(new ValueMapper <T>(alias));
}
public void GroupBy <TValue>(SqlStorageField <TEntity, TValue> field)
{
if (!field.RequiresJoin)
{
GroupBy(new SqlValueExpression <TEntity, TValue>(
QueryExpression.Column(field.ColumnName),
null
));
return;
}
var joins = field.JoinSpecification.CreateJoin(_dataSchema, field, _tableIdentifier)
.Select(q => q.Builder).ToArray();
GroupBy(new SqlValueExpression <TEntity, TValue>(
QueryExpression.Column(field.ColumnName),
joins
));
}
public void OrderByDescending <TValue>(SqlStorageField <TEntity, TValue> field)
{
// todo: support multiple nested JOINs
if (!field.RequiresJoin)
{
OrderByDescending(new SqlValueExpression <TEntity, TValue>(
QueryExpression.Column(field.ColumnName),
null
));
return;
}
var joins = field.JoinSpecification.CreateJoin(_dataSchema, field, _tableIdentifier)
.Select(q => q.Builder).ToArray();
OrderByDescending(new SqlValueExpression <TEntity, TValue>(
QueryExpression.Column(field.ColumnName),
joins
));
}
public T ReadField <T>(SqlStorageField <TEntity> field)
{
var ord = _queryResult.GetOrdinal(field.FieldName);
if (_queryResult.IsDBNull(ord))
{
return(default(T));
}
if (typeof(T).IsEnum)
{
return((T)(object)QueryTypeReaders.GetTypeReader <int>()(_queryResult, ord));
}
var reader = QueryTypeReaders.GetTypeReader <T>();
if (reader == null)
{
throw new System.InvalidOperationException("Attempting to read an unsupported data type from query result.");
}
return(reader(_queryResult, ord));
}
public SqlUpdateBuilder <TEntity> AndWhere <TValue>(SqlStorageField <TEntity, TValue> field, SqlComparisonOperator comparisonType, TValue value)
{
_whereBuilder.AndAlso(field, comparisonType, value);
return(this);
}
IWhereQueryBuilder <TEntity> IWhereQueryBuilder <TEntity> .OrWhere <TValue>(SqlStorageField <TEntity, TValue> field, SqlComparisonOperator comparisonType, TValue value) => OrWhere(field, comparisonType, value);
public SqlDeleteBuilder <TEntity> OrWhere <TValue>(SqlStorageField <TEntity, TValue> field, SqlComparisonOperator comparisonType, TValue value)
{
_whereBuilder.OrElse(field, comparisonType, value);
return(this);
}
public Mapping.IResultMapper <T> Select <T>(SqlStorageField <TEntity, T> storageField) => _projectionBuilder.Select(storageField);
public SqlSelectBuilder <TEntity> OrHaving <TValue>(SqlStorageField <TEntity, TValue> field, SqlComparisonOperator comparisonType, TValue value)
{
_havingBuilder.OrElse(field, comparisonType, value);
return(this);
}
public void EnterMember(SqlStorageField <TEntity> field)
{
// noop
}
public SqlSelectBuilder <TEntity> OrderByDescending <TValue>(SqlStorageField <TEntity, TValue> field)
{
_orderByBuilder.OrderByDescending(field);
return(this);
}
IOrderByQueryBuilder <TEntity> IOrderByQueryBuilder <TEntity> .OrderByDescending <TValue>(SqlStorageField <TEntity, TValue> field) => OrderByDescending(field);
IOrderByQueryBuilder <TEntity> IOrderByQueryBuilder <TEntity> .OrderBy <TValue>(SqlStorageField <TEntity, TValue> field) => OrderBy(field);
public SqlSelectBuilder <TEntity> GroupBy <TValue>(SqlStorageField <TEntity, TValue> field)
{
_groupByBuilder.GroupBy(field);
return(this);
}
IGroupByQueryBuilder <TEntity> IGroupByQueryBuilder <TEntity> .GroupBy <TValue>(SqlStorageField <TEntity, TValue> field) => GroupBy(field);
public bool CanEnterMember(SqlStorageField <TEntity> field)
{
return(true);
}
IRangeQueryBuilder <TEntity> IRangeQueryBuilder <TEntity> .Offset <TValue>(SqlStorageField <TEntity, TValue> field) => Offset(field);
public SqlSelectBuilder <TEntity> Offset <TValue>(SqlStorageField <TEntity, TValue> field)
{
_rangeBuilder.Offset(field);
return(this);
}
IRangeQueryBuilder <TEntity> IRangeQueryBuilder <TEntity> .Limit <TValue>(SqlStorageField <TEntity, TValue> field) => Limit(field);
IHavingQueryBuilder <TEntity> IHavingQueryBuilder <TEntity> .OrHaving <TValue>(SqlStorageField <TEntity, TValue> field, SqlComparisonOperator comparisonType, TValue value) => OrHaving(field, comparisonType, value);
