public async Task <T> EvaluateAsync <T>(WorkflowExpression <T> expression, WorkflowExecutionContext workflowContext)
{
var templateContext = CreateTemplateContext(workflowContext);
var expressionContext = new WorkflowExecutionExpressionContext(templateContext, workflowContext);
await _workflowContextHandlers.InvokeAsync(x => x.EvaluatingExpressionAsync(expressionContext), _logger);
var result = await _liquidTemplateManager.RenderAsync(expression.Expression, System.Text.Encodings.Web.JavaScriptEncoder.Default, templateContext);
return(string.IsNullOrWhiteSpace(result) ? default(T) : (T)Convert.ChangeType(result, typeof(T)));
}
public async Task <T> EvaluateAsync <T>(WorkflowExpression <T> expression, WorkflowExecutionContext workflowContext, TextEncoder encoder)
{
var templateContext = new TemplateContext(_templateOptions);
var expressionContext = new WorkflowExecutionExpressionContext(templateContext, workflowContext);
await _workflowContextHandlers.InvokeAsync((h, expressionContext) => h.EvaluatingExpressionAsync(expressionContext), expressionContext, _logger);
// Set WorkflowContext as a local scope property.
var result = await _liquidTemplateManager.RenderStringAsync(
expression.Expression,
encoder ?? NullEncoder.Default,
new Dictionary <string, FluidValue>() { ["Workflow"] = new ObjectValue(workflowContext) }
);
return(String.IsNullOrWhiteSpace(result) ? default : (T)Convert.ChangeType(result, typeof(T)));
}
public async Task <T> EvaluateAsync <T>(WorkflowExpression <T> expression, WorkflowExecutionContext workflowContext, TextEncoder encoder)
{
var templateContext = CreateTemplateContext(workflowContext);
var expressionContext = new WorkflowExecutionExpressionContext(templateContext, workflowContext);
await _workflowContextHandlers.InvokeAsync((h, expressionContext) => h.EvaluatingExpressionAsync(expressionContext), expressionContext, _logger);
// Set WorkflowContext as a local scope property.
var result = await _liquidTemplateManager.RenderAsync(
expression.Expression,
encoder ?? NullEncoder.Default,
scope => scope.SetValue("Workflow", workflowContext)
);
return(string.IsNullOrWhiteSpace(result) ? default(T) : (T)Convert.ChangeType(result, typeof(T)));
}
public virtual Task EvaluatingExpressionAsync(WorkflowExecutionExpressionContext context)
{
return(Task.CompletedTask);
}
