DPL: create matcher from description (#4363)

Author: ktf

Framework/Core/include/Framework/DataSpecUtils.h

@@ -185,6 +185,9 @@ struct DataSpecUtils {
 
   /// Build a DataDescriptMatcher which does not care about the subSpec and description.
   static data_matcher::DataDescriptorMatcher dataDescriptorMatcherFrom(header::DataOrigin const& origin);
+
+  /// Build a DataDescriptMatcher which does not care about the subSpec and origin.
+  static data_matcher::DataDescriptorMatcher dataDescriptorMatcherFrom(header::DataDescription const& origin);
 };
 
 } // namespace framework

Framework/Core/src/DataSpecUtils.cxx

@@ -480,6 +480,24 @@ DataDescriptorMatcher DataSpecUtils::dataDescriptorMatcherFrom(header::DataOrigi
   return std::move(matchOnlyOrigin);
 }
 
+DataDescriptorMatcher DataSpecUtils::dataDescriptorMatcherFrom(header::DataDescription const& description)
+{
+  char buf[17] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
+  strncpy(buf, description.str, 16);
+  DataDescriptorMatcher matchOnlyOrigin{
+    DataDescriptorMatcher::Op::And,
+    OriginValueMatcher{ContextRef{1}},
+    std::make_unique<DataDescriptorMatcher>(
+      DataDescriptorMatcher::Op::And,
+      DescriptionValueMatcher{buf},
+      std::make_unique<DataDescriptorMatcher>(
+        DataDescriptorMatcher::Op::And,
+        SubSpecificationTypeValueMatcher{ContextRef{2}},
+        std::make_unique<DataDescriptorMatcher>(DataDescriptorMatcher::Op::Just,
+                                                StartTimeValueMatcher{ContextRef{0}})))};
+  return std::move(matchOnlyOrigin);
+}
+
 InputSpec DataSpecUtils::matchingInput(OutputSpec const& spec)
 {
   return std::visit(overloaded{

Framework/Core/test/unittest_DataSpecUtils.cxx

@@ -242,6 +242,16 @@ BOOST_AUTO_TEST_CASE(GetOptionalSubSpecWithMatcher)
   BOOST_CHECK_EQUAL(std::string(dataType2.description.as<std::string>()), "FOOO");
 }
 
+BOOST_AUTO_TEST_CASE(TestMatcherFromDescription)
+{
+  auto fromQueryInputSpec = DataSpecUtils::dataDescriptorMatcherFrom(header::DataDescription{"TSET"});
+  InputSpec ddSpec{
+    "binding",
+    std::move(fromQueryInputSpec)};
+
+  BOOST_CHECK_EQUAL(DataSpecUtils::asConcreteDataDescription(ddSpec).as<std::string>(), "TSET");
+}
+
 BOOST_AUTO_TEST_CASE(FindOutputSpec)
 {
   std::vector<OutputSpec> specs = {