void IMetadataBuilder.BuildAssociationMetadata(AssociationMetadata metadata, MethodBuilder methodBuilder)
{
BuildAssociationAttribute(metadata, methodBuilder.Attribute(WellKnownTypes.LinqToDB.Mapping.AssociationAttribute));
}
/// <summary>
/// Generates <see cref="AssociationAttribute"/> on association property or method.
/// </summary>
/// <param name="metadata">Association metadata descriptor.</param>
/// <param name="attr">Association attribute builder.</param>
private void BuildAssociationAttribute(AssociationMetadata metadata, AttributeBuilder attr)
{
if (!metadata.CanBeNull)
{
attr.Parameter(WellKnownTypes.LinqToDB.Mapping.AssociationAttribute_CanBeNull, _builder.Constant(false, true));
}
// track association is configured to avoid generation of multiple conflicting configurations
// as assocation could be configured in several ways
var associationConfigured = false;
if (metadata.ExpressionPredicate != null)
{
attr.Parameter(WellKnownTypes.LinqToDB.Mapping.AssociationAttribute_ExpressionPredicate, _builder.Constant(metadata.ExpressionPredicate, true));
associationConfigured = true;
}
if (metadata.QueryExpressionMethod != null)
{
if (associationConfigured)
{
throw new InvalidOperationException("Association contains multiple relation setups");
}
attr.Parameter(WellKnownTypes.LinqToDB.Mapping.AssociationAttribute_QueryExpressionMethod, _builder.Constant(metadata.QueryExpressionMethod, true));
associationConfigured = true;
}
// track setup status of by-column assocation mapping
var thisConfigured = false;
var otherConfigured = false;
if (metadata.ThisKeyExpression != null)
{
if (associationConfigured || metadata.ThisKey != null)
{
throw new InvalidOperationException("Association contains multiple relation setups");
}
attr.Parameter(WellKnownTypes.LinqToDB.Mapping.AssociationAttribute_ThisKey, metadata.ThisKeyExpression);
thisConfigured = true;
}
if (metadata.OtherKeyExpression != null)
{
if (associationConfigured || metadata.OtherKey != null)
{
throw new InvalidOperationException("Association contains multiple relation setups");
}
attr.Parameter(WellKnownTypes.LinqToDB.Mapping.AssociationAttribute_OtherKey, metadata.OtherKeyExpression);
otherConfigured = true;
}
if (metadata.ThisKey != null)
{
if (associationConfigured || thisConfigured)
{
throw new InvalidOperationException("Association contains multiple relation setups");
}
attr.Parameter(WellKnownTypes.LinqToDB.Mapping.AssociationAttribute_ThisKey, _builder.Constant(metadata.ThisKey, true));
thisConfigured = true;
}
if (metadata.OtherKey != null)
{
if (associationConfigured || otherConfigured)
{
throw new InvalidOperationException("Association contains multiple relation setups");
}
attr.Parameter(WellKnownTypes.LinqToDB.Mapping.AssociationAttribute_OtherKey, _builder.Constant(metadata.OtherKey, true));
otherConfigured = true;
}
if (!associationConfigured && !(thisConfigured && otherConfigured))
{
throw new InvalidOperationException("Association is missing relation setup");
}
if (metadata.Configuration != null)
{
attr.Parameter(WellKnownTypes.LinqToDB.Mapping.AssociationAttribute_Configuration, _builder.Constant(metadata.Configuration, true));
}
if (metadata.Alias != null)
{
attr.Parameter(WellKnownTypes.LinqToDB.Mapping.AssociationAttribute_AliasName, _builder.Constant(metadata.Alias, true));
}
if (metadata.Storage != null)
{
attr.Parameter(WellKnownTypes.LinqToDB.Mapping.AssociationAttribute_Storage, _builder.Constant(metadata.Storage, true));
}
}
void IMetadataBuilder.BuildAssociationMetadata(AssociationMetadata metadata, PropertyBuilder propertyBuilder)
{
BuildAssociationAttribute(metadata, propertyBuilder.AddAttribute(WellKnownTypes.LinqToDB.Mapping.AssociationAttribute));
}