Refactor PodioExample

.github/workflows/ccpp-docker.yml

@@ -64,7 +64,7 @@ jobs:
     - name: Other examples
       run: |
         export LD_LIBRARY_PATH=/app/podio/install/lib:$LD_LIBRARY_PATH
-        ctest --test-dir build --output-on-failure -R "jana-example-dst-tests|jana-example-tutorial-tests|jana-example-eventgroup-tests|jana-example-unit-tests"
+        ctest --test-dir build --output-on-failure -R "jana-example-dst-tests|jana-example-tutorial-tests|jana-example-eventgroup-tests|jana-example-unit-tests|jana-example-podio-tests"
 
 
 

src/examples/CMakeLists.txt

@@ -7,6 +7,9 @@ add_subdirectory(EventGroupExample)
 add_subdirectory(SubeventExample)
 add_subdirectory(SubeventCUDAExample)
 add_subdirectory(UnitTestingExample)
+add_subdirectory(PodioDatamodel)
+add_subdirectory(PodioFileReader)
+add_subdirectory(PodioFileWriter)
 add_subdirectory(PodioExample)
 add_subdirectory(TimesliceExample)
 add_subdirectory(RootDatamodelExample)

src/examples/PodioDatamodel/CMakeLists.txt

@@ -0,0 +1,35 @@
+
+if (USE_PODIO)
+
+    PODIO_GENERATE_DATAMODEL(PodioDatamodel datamodel.yaml headers sources 
+        IO_BACKEND_HANDLERS ROOT
+        OUTPUT_FOLDER ${CMAKE_CURRENT_BINARY_DIR}
+    )
+
+    PODIO_ADD_DATAMODEL_CORE_LIB(PodioDatamodel "${headers}" "${sources}"
+        OUTPUT_FOLDER ${CMAKE_CURRENT_BINARY_DIR})
+
+    PODIO_ADD_ROOT_IO_DICT(PodioDatamodelDict PodioDatamodel "${headers}" 
+        ${CMAKE_CURRENT_BINARY_DIR}/src/selection.xml)
+
+    install(TARGETS PodioDatamodel
+        EXPORT jana2_targets
+        LIBRARY DESTINATION lib
+        PUBLIC_HEADER DESTINATION include/JANA/examples/PodioDatamodel
+    )
+
+    install(TARGETS PodioDatamodelDict
+        EXPORT jana2_targets
+        DESTINATION lib
+    )
+
+    install(FILES ${CMAKE_CURRENT_BINARY_DIR}/PodioDatamodelDictDict.rootmap DESTINATION lib)
+    install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libPodioDatamodelDict_rdict.pcm DESTINATION lib)
+
+else()
+    message(STATUS "Skipping examples/PodioDatamodel because USE_PODIO=Off")
+
+endif()
+
+
+

src/examples/PodioDatamodel/README.md

@@ -0,0 +1,11 @@
+
+PodioDatamodel
+==============
+
+This example shows how to define and integrate a PODIO data model within a JANA project.
+The entire data model is defined within a single YAML file. The generated files can be found
+in the build directory. The headers are installed to `$CMAKE_INSTALL_PREFIX/include/examples/PodioDatamodel` 
+and the shared library is installed to `$CMAKE_INSTALL_PREFIX/lib`.
+
+This data model is used by `PodioExample`, `TimesliceExample`, and more.
+

src/examples/PodioExample/layout.yaml → src/examples/PodioDatamodel/datamodel.yaml

@@ -1,6 +1,4 @@
 ---
-# A more complete example is provided by podio under tests/datalayout.yaml
-
 schema_version: 1
 options :
   # should getters / setters be prefixed with get / set?
@@ -29,12 +27,12 @@ datatypes :
     Description : "Example Hit"
     Author : "B. Hegner"
     Members:
-      - unsigned long long cellID      // cellID
-      - double x      // x-coordinate
-      - double y      // y-coordinate
-      - double z      // z-coordinate
-      - double energy // measured energy deposit
-      - uint64_t time   // ticks since start of timeframe
+      - uint64_t cellID   // cellID
+      - double x          // x-coordinate
+      - double y          // y-coordinate
+      - double z          // z-coordinate
+      - double energy     // measured energy deposit
+      - uint64_t time     // ticks since start of timeframe
 
   ExampleCluster :
     Description : "Cluster"

src/examples/PodioExample/CMakeLists.txt

@@ -2,50 +2,21 @@
 set(PodioExample_SOURCES
         PodioExample.cc
         PodioExampleProcessor.cc
-        PodioExampleSource.cc
         ExampleClusterFactory.cc
         ExampleMultifactory.cc
         )
 
 if (USE_PODIO)
 
-    PODIO_GENERATE_DATAMODEL(PodioExampleDatamodel layout.yaml headers sources 
-        IO_BACKEND_HANDLERS ROOT
-        OUTPUT_FOLDER ${CMAKE_CURRENT_BINARY_DIR}
-    )
-
-    PODIO_ADD_DATAMODEL_CORE_LIB(PodioExampleDatamodel "${headers}" "${sources}"
-        OUTPUT_FOLDER ${CMAKE_CURRENT_BINARY_DIR})
-
-    PODIO_ADD_ROOT_IO_DICT(PodioExampleDatamodelDict PodioExampleDatamodel "${headers}" 
-        ${CMAKE_CURRENT_BINARY_DIR}/src/selection.xml)
-
-    find_package(podio REQUIRED)
     add_executable(PodioExample ${PodioExample_SOURCES})
     target_link_libraries(PodioExample 
-        jana2 PodioExampleDatamodel PodioExampleDatamodelDict podio::podioRootIO)
+        PUBLIC jana2 PodioDatamodel PodioDatamodelDict podio::podioRootIO)
 
     set_target_properties(PodioExample PROPERTIES INSTALL_RPATH_USE_LINK_PATH TRUE)
 
     install(TARGETS PodioExample DESTINATION bin)
 
-    install(TARGETS PodioExampleDatamodel
-        EXPORT jana2_targets
-        LIBRARY DESTINATION lib/JANA/plugins
-        PUBLIC_HEADER DESTINATION include/JANA/plugins/PodioExampleDatamodel
-    )
-
-    install(TARGETS PodioExampleDatamodelDict 
-        EXPORT jana2_targets
-        DESTINATION lib/JANA/plugins)
-
-    install(FILES ${CMAKE_CURRENT_BINARY_DIR}/PodioExampleDatamodelDictDict.rootmap DESTINATION lib/JANA/plugins)
-    install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libPodioExampleDatamodelDict_rdict.pcm DESTINATION lib/JANA/plugins)
-
-    add_test(NAME jana-example-podio-tests
-        COMMAND PodioExample)
-
-    set_tests_properties(jana-example-podio-tests PROPERTIES DISABLED TRUE)
+    add_test(NAME jana-example-podio-tests COMMAND PodioExample)
 
 else()
     message(STATUS "Skipping examples/PodioExample because USE_PODIO=Off")

src/examples/PodioExample/ExampleClusterFactory.cc

@@ -4,7 +4,8 @@
 
 
 #include "ExampleClusterFactory.h"
-#include "PodioExampleDatamodel/ExampleHit.h"
+#include "PodioDatamodel/ExampleClusterCollection.h"
+#include "PodioDatamodel/ExampleHitCollection.h"
 #include <JANA/JEvent.h>
 
 ExampleClusterFactory::ExampleClusterFactory() {
@@ -54,4 +55,3 @@ void ExampleClusterFactory::Process(const std::shared_ptr<const JEvent> &event)
 }
 
 
-// TODO: Expose collections as refs, not ptrs?

src/examples/PodioExample/ExampleClusterFactory.h

@@ -7,8 +7,7 @@
 #define JANA2_EXAMPLECLUSTERFACTORY_H
 
 #include <JANA/Podio/JFactoryPodioT.h>
-#include "PodioExampleDatamodel/ExampleCluster.h"
-#include "DatamodelGlue.h"
+#include "PodioDatamodel/ExampleCluster.h"
 
 class ExampleClusterFactory : public JFactoryPodioT<ExampleCluster> {
 public:

src/examples/PodioExample/ExampleMultifactory.cc

@@ -5,7 +5,8 @@
 
 #include "ExampleMultifactory.h"
 #include <JANA/JEvent.h>
-#include "DatamodelGlue.h"
+#include <PodioDatamodel/ExampleHitCollection.h>
+#include <PodioDatamodel/ExampleClusterCollection.h>
 
 ExampleMultifactory::ExampleMultifactory() {
 

src/examples/PodioExample/PodioExample.cc

@@ -3,16 +3,15 @@
 // Subject to the terms in the LICENSE file found in the top-level directory.
 #include <podio/CollectionBase.h>
 #include <podio/Frame.h>
-#include "PodioExampleDatamodel/MutableExampleHit.h"
-#include "PodioExampleDatamodel/ExampleHitCollection.h"
+
+#include "PodioDatamodel/EventInfoCollection.h"
+#include "PodioDatamodel/ExampleHitCollection.h"
 #include <podio/ROOTFrameWriter.h>
 #include <podio/ROOTFrameReader.h>
 
 #include <JANA/JApplication.h>
 #include <JANA/JFactoryGenerator.h>
-#include <JANA/Podio/JEventProcessorPodio.h>
 
-#include "PodioExampleSource.h"
 #include "PodioExampleProcessor.h"
 #include "ExampleClusterFactory.h"
 #include "ExampleMultifactory.h"
@@ -79,10 +78,13 @@ int main() {
 
     JApplication app;
     app.Add(new PodioExampleProcessor);
-    app.Add(new JEventProcessorPodio);
     app.Add(new JFactoryGeneratorT<ExampleClusterFactory>());
     app.Add(new JFactoryGeneratorT<ExampleMultifactory>());
-    app.Add(new PodioExampleSource("hits.root"));
+    app.Add("hits.root");
+    app.AddPlugin("PodioFileReader");
+    app.AddPlugin("PodioFileWriter");
+    app.SetParameterValue("podio:output_file", "podio_output.root");
+    app.SetParameterValue("podio:output_collections", "hits_filtered,clusters_from_hits_filtered,clusters_filtered");
     app.Run();
 
     verify_clusters_file();

src/examples/PodioExample/PodioExampleProcessor.cc

@@ -4,6 +4,8 @@
 
 
 #include "PodioExampleProcessor.h"
+#include <PodioDatamodel/ExampleHitCollection.h>
+#include <PodioDatamodel/ExampleClusterCollection.h>
 
 /*
 struct PrintingVisitor {

src/examples/PodioExample/PodioExampleProcessor.h

@@ -7,7 +7,6 @@
 #define JANA2_PODIOEXAMPLEPROCESSOR_H
 
 #include <JANA/JEventProcessor.h>
-#include "DatamodelGlue.h"
 
 class PodioExampleProcessor : public JEventProcessor {
 public:

src/examples/PodioFileReader/CMakeLists.txt

@@ -0,0 +1,15 @@
+
+if (USE_PODIO)
+
+    add_jana_plugin(PodioFileReader)
+
+    target_link_libraries(PodioFileReader 
+        PUBLIC PodioDatamodel PodioDatamodelDict podio::podioRootIO)
+
+else()
+    message(STATUS "Skipping examples/PodioFileReader because USE_PODIO=Off")
+
+endif()
+
+
+