Handle errors in CSAR generation

Author: juancadavid

ToscaDesigner/src/main/java/fr/softeam/toscadesigner/export/AbstractToscaFileGenerator.java

@@ -70,7 +70,8 @@ private Handlebars setupHandlebars() {
 						TNodeTemplate node = tRequirement.getNode();
 						propertyStringValue = node != null ? node.getName() : "''";
 					} else if (searchedPropertyName.equals("capability")) {
-						propertyStringValue = tRequirement.getCapability().getElement().getName();
+						fr.softeam.toscadesigner.api.tosca.standard.class_.TCapabilityDefinition capability = tRequirement.getCapability();
+						propertyStringValue = capability != null ? capability.getElement().getName() : "";
 					}
 				} else if (stereotype.getName().equals("TRequirementDefinition")) {
 
@@ -79,7 +80,8 @@ private Handlebars setupHandlebars() {
 					if (searchedPropertyName.equals("node")) {
 						propertyStringValue = tRequirementDefinition.getNodeType().getName();
 					} else if (searchedPropertyName.equals("capability")) {
-						propertyStringValue = tRequirementDefinition.getCapability().getElement().getName();
+						fr.softeam.toscadesigner.api.tosca.standard.class_.TCapabilityDefinition capability = tRequirementDefinition.getCapability();
+						propertyStringValue = capability.getElement().getName();
 					} else if (searchedPropertyName.equals("relationshipType")) {
 						propertyStringValue = tRequirementDefinition.getRelationshipType().getElement().getName();
 					} else if (searchedPropertyName.equals("lowerBound")) {

ToscaDesigner/src/main/java/fr/softeam/toscadesigner/export/ToscaFileGenerator.java

@@ -8,6 +8,8 @@
 import org.modelio.api.module.context.log.ILogService;
 import org.modelio.vcore.smkernel.mapi.MObject;
 
+import com.github.jknack.handlebars.HandlebarsException;
+
 class ToscaFileGenerator extends AbstractToscaFileGenerator {
 	private static final String[] TOSCA_FILE_EXTENSIONS = { "*.tosca" };
 	private ILogService logger;
@@ -39,7 +41,15 @@ public void generateContent(MObject object) throws IOException {
 				logger.error(ex);
 				MessageDialog.openError(Display.getCurrent().getActiveShell(), getFileType() + " export error",
 						ex.getLocalizedMessage());
-			}
+			} catch (HandlebarsException ex) {
+		        logger.error(ex);
+		        MessageDialog.openError(Display.getCurrent().getActiveShell(), "Handlebars Error",
+		                "An error occurred while rendering the Handlebars template: " + ex.getMessage());
+		    } catch (NullPointerException ex) {
+		        logger.error(ex);
+		        MessageDialog.openError(Display.getCurrent().getActiveShell(), "NullPointerException",
+		                "A NullPointerException occurred. See log for details.");
+		    }
 		}
 	}