private IEnumerable<UnitOfWork> DiscoverWork(TemplateData templateData, XPathVariable[] parameters, Resource[] resources)
{
CustomXsltContext xpathContext = CreateCustomXsltContext(templateData.IgnoredVersionComponent);
xpathContext.PushVariableScope(templateData.Document.Root, parameters);
for (int i = 0; i < resources.Length; i++)
{
xpathContext.PushVariableScope(templateData.Document.Root, resources[i].Variables);
if (EvalCondition(xpathContext, templateData.Document.Root, resources[i].ConditionExpression))
{
string expandedSource = EvalValue(xpathContext, templateData.Document.Root, resources[i].Source);
string expandedOutput = EvalValue(xpathContext, templateData.Document.Root, resources[i].Output);
List<IResourceTransform> transforms = new List<IResourceTransform>();
foreach (var resourceTransform in resources[i].Transforms)
{
using (CompositionContainer localContainer = new CompositionContainer(this._container.Catalog))
{
string dirName = Path.GetDirectoryName(expandedSource);
CompositionBatch batch = new CompositionBatch();
var exportMetadata = new Dictionary<string, object>();
exportMetadata.Add(CompositionConstants.ExportTypeIdentityMetadataName,
AttributedModelServices.GetTypeIdentity(typeof(IFileProvider)));
exportMetadata.Add(CompositionConstants.PartCreationPolicyMetadataName,
CreationPolicy.Shared);
batch.AddExport(new Export(ContractNames.ResourceFileProvider,
exportMetadata,
() => new ScopedFileProvider(resources[i].FileProvider, dirName)));
// TODO export resourceTransform.Parameters into localContainer using CompositionBatch
localContainer.Compose(batch);
var requiredMetadata = new[]
{
new Tuple<string, object, IEqualityComparer>("Name",
resourceTransform.Name,
StringComparer.OrdinalIgnoreCase)
};
ImportDefinition importDefinition =
new MetadataContractBasedImportDefinition(
typeof(IResourceTransform),
null,
requiredMetadata,
ImportCardinality.ExactlyOne,
false,
true,
CreationPolicy.NonShared);
Export transformExport = localContainer.GetExports(importDefinition).Single();
transforms.Add((IResourceTransform)transformExport.Value);
}
}
yield return
new ResourceDeployment(resources[i].FileProvider,
expandedSource,
expandedOutput, // TODO this needs a 'writable' file provider
transforms.ToArray());
}
xpathContext.PopVariableScope();
}
xpathContext.PopVariableScope();
}
private IEnumerable<UnitOfWork> DiscoverWork(TemplateData templateData, XPathVariable[] parameters, Resource[] resources)
{
CustomXsltContext xpathContext = CreateCustomXsltContext(templateData.IgnoredVersionComponent);
xpathContext.PushVariableScope(templateData.Document.Root, parameters);
for (int i = 0; i < resources.Length; i++)
{
xpathContext.PushVariableScope(templateData.Document.Root, resources[i].Variables);
if (EvalCondition(xpathContext, templateData.Document.Root, resources[i].ConditionExpression))
{
List<IResourceTransform> transforms = new List<IResourceTransform>();
foreach (var resourceTransform in resources[i].Transforms)
{
CompositionContainer paramContainer = new CompositionContainer(this._container);
// TODO export resourceTransform.Parameters into paramContainer
ImportDefinition importDefinition =
new MetadataContractBasedImportDefinition(
typeof(IResourceTransform),
null,
new[] {new Tuple<string, object, IEqualityComparer>("Name", resourceTransform.Name, StringComparer.OrdinalIgnoreCase) },
ImportCardinality.ExactlyOne,
false,
false,
CreationPolicy.NonShared);
Export transformExport = paramContainer.GetExports(importDefinition).Single();
transforms.Add((IResourceTransform)transformExport.Value);
}
yield return
new ResourceDeployment(resources[i].FileProvider,
resources[i].Source,
resources[i].Output, // TODO this needs a 'writable' file provider
transforms.ToArray());
}
xpathContext.PopVariableScope();
}
xpathContext.PopVariableScope();
}
private Resource ParseResouceDefinition(IFileProvider provider, XElement elem)
{
string source = this.GetAttributeValue(elem, "path");
XAttribute outputAttr = elem.Attribute("output");
string output;
if (outputAttr != null)
output = outputAttr.Value;
else
output = '\'' + Path.GetFileName(source) + '\'';
List<ResourceTransform> transforms = new List<ResourceTransform>();
foreach (XElement transform in elem.Elements("transform"))
{
string transformName = this.GetAttributeValue(transform, "name");
var transformParams = transform.Elements("with-param")
.Select(p => new ExpressionXPathVariable(this.GetAttributeValue(p, "name"),
this.GetAttributeValue(p, "select")));
transforms.Add(new ResourceTransform(transformName, transformParams));
}
var resource = new Resource(this.GetAttributeValueOrDefault(elem, "condition"),
this.ParseVariables(elem).ToArray(),
provider,
source,
output,
transforms.ToArray());
return resource;
}
private Resource ParseResouceDefinition(Stack<IFileProvider> providers, XElement elem)
{
var source = this.GetAttributeValue(elem, "path");
IFileProvider resourceProvider;
Uri sourceUri;
if (Uri.TryCreate(source, UriKind.Absolute, out sourceUri) && sourceUri.Scheme.StartsWith("http"))
{
resourceProvider = new HttpFileProvider();
}
else
{
resourceProvider = providers.FirstOrDefault(p => p.FileExists(source));
if (resourceProvider == null)
throw new FileNotFoundException("Resource not found: " + source);
}
XAttribute outputAttr = elem.Attribute("output");
string output;
if (outputAttr != null)
output = outputAttr.Value;
else
output = '\'' + Path.GetFileName(source) + '\'';
List<ResourceTransform> transforms = new List<ResourceTransform>();
foreach (XElement transform in elem.Elements("transform"))
{
string transformName = this.GetAttributeValue(transform, "name");
var transformParams = transform.Elements("with-param")
.Select(p => new ExpressionXPathVariable(this.GetAttributeValue(p, "name"),
this.GetAttributeValue(p, "select")));
transforms.Add(new ResourceTransform(transformName, transformParams));
}
var resource = new Resource(this.GetAttributeValueOrDefault(elem, "condition"),
this.ParseVariables(elem).ToArray(),
resourceProvider,
source,
output,
transforms.ToArray());
return resource;
}
