public virtual DataModelBindingBuilder <TSourceModel, TSourceField, TTargetModel, TTargetField> Bind(ModelFieldBindingTarget <TTargetField> bindingTarget,
ModelFieldBindingSource <TSourceField> bindingSource,
DataModelBinding <TSourceField, TTargetField> binding)
{
var sourcePathBase = bindingSource.Path;
var targetPathBase = bindingTarget.Path;
foreach (var inputFieldBinding in binding.FieldBindings)
{
var target = new ModelFieldBindingTarget <TTargetField>(
targetPathBase.Concat(inputFieldBinding.BindingTarget.Path).ToArray(),
inputFieldBinding.TargetField
);
if (IsBound(target))
{
continue;
}
var source = new ModelFieldBindingSource <TSourceField>(
sourcePathBase.Concat(inputFieldBinding.BindingSource.Path).ToArray(),
inputFieldBinding.SourceField
);
var fieldBinding = new ModelFieldBinding <TSourceField, TTargetField>(
source,
target,
inputFieldBinding.Transformation
);
FieldBindings.Add(fieldBinding);
}
return(this);
}
public virtual DataModelBindingBuilder <TSourceModel, TSourceField, TTargetModel, TTargetField> Bind(ModelFieldBindingTarget <TTargetField> bindingTarget,
ModelFieldBindingSource <TSourceField> bindingSource,
IBindingTransformFactory bindingTransformFactory)
{
if (bindingSource == null)
{
throw new ArgumentNullException(nameof(bindingSource));
}
if (bindingTarget == null)
{
throw new ArgumentNullException(nameof(bindingTarget));
}
var bindingTransformation = bindingTransformFactory.CreateTransformation(
bindingSource.Field, bindingTarget.Field
);
var fieldBinding = new ModelFieldBinding <TSourceField, TTargetField>(
bindingSource, bindingTarget, bindingTransformation
);
FieldBindings.Add(fieldBinding);
return(this);
}
RouteBindingFromSourceType<TSourceModel, TSourceField, TIntermediateModel, TTargetModel, TTargetField>(
this DataModelBinding<TSourceModel, TSourceField, TIntermediateModel, TTargetField> sourceToIntermediateBinding,
DataModelBinding<TIntermediateModel, TTargetField, TTargetModel, TTargetField> intermediateToTargetBinding
)
where TSourceField : IModelField
where TTargetField : IModelField
where TSourceModel : IDataModel<TSourceField>
where TIntermediateModel : TypeModel, IDataModel<TTargetField>
where TTargetModel : IDataModel<TTargetField>
{
// this method needs TIntermediateModel to be a TypeModel
// a TypeModel is required because we're performing a transform on
// an already transformed value
// for now the method is left without a generic constraint on TIntermediateModel
// forcing the use of TypeModel so that I can come back to it
// as needed at a later date.
// in the future, consider allowing the consumer to pass in a binding
// that binds TIntermediate to a TypeModel that can be used to transform
// bound objects
var fieldBindings = new List<ModelFieldBinding<TSourceField, TTargetField>>();
// loop each field bound from source->intermediate
foreach (var sourceBinding in sourceToIntermediateBinding.FieldBindings)
{
// find a matching binding from intermediate->target
var targetBinding = intermediateToTargetBinding.FieldBindings
.FirstOrDefault(q => q.BindingSource.Path.SequenceEqual(sourceBinding.BindingTarget.Path));
if (targetBinding != null)
{
// copy binding
var routedBinding = new ModelFieldBinding<TSourceField, TTargetField>(
sourceBinding.BindingSource,
targetBinding.BindingTarget,
new CompositeBindingTransformFactory(sourceBinding.Transformation, targetBinding.Transformation)
.CreateTransformation(sourceBinding.SourceField, targetBinding.TargetField)
);
fieldBindings.Add(routedBinding);
continue;
}
var deeperModel = sourceBinding.TargetField.FieldModel;
if (deeperModel == null)
continue;
var runOnceSourceTransform = RunOnceTransformation.Create(sourceBinding.Transformation);
BindIntermediateFields(runOnceSourceTransform, sourceBinding, deeperModel, new IModelField[0], sourceBinding.BindingTarget.Path);
}
return new DataModelBinding<TSourceModel, TSourceField, TTargetModel, TTargetField>(
sourceToIntermediateBinding.SourceModel,
intermediateToTargetBinding.TargetModel,
fieldBindings
);
void BindIntermediateFields(BindingTransformation sourceTransform, ModelFieldBinding<TSourceField, TTargetField> sourceBinding, IDataModel model, IEnumerable<IModelField> pathOfFields, string[] sourceBindingPath)
{
foreach (var field in model.Fields)
{
var thisPathOfFields = pathOfFields.Concat(new[] { field });
var intermediateBindingPath = sourceBindingPath.Concat(thisPathOfFields.Select(q => q.FieldName))
.ToArray();
var targetBinding = intermediateToTargetBinding.FieldBindings
.FirstOrDefault(q => q.BindingSource.Path.SequenceEqual(intermediateBindingPath));
if (targetBinding != null)
{
var routedBinding = new ModelFieldBinding<TSourceField, TTargetField>(
sourceBinding.BindingSource,
targetBinding.BindingTarget,
new CompositeBindingTransformFactory(
sourceTransform,
ReadFieldTransform.Create(thisPathOfFields.OfType<PropertyField>().ToArray()),
targetBinding.Transformation)
.CreateTransformation(sourceBinding.SourceField, targetBinding.TargetField)
);
fieldBindings.Add(routedBinding);
continue;
}
var deeperModel = field.FieldModel;
if (deeperModel == null)
continue;
BindIntermediateFields(sourceTransform, sourceBinding, deeperModel, thisPathOfFields, sourceBinding.BindingTarget.Path);
}
}
}
