1 files changed, 59 insertions, 0 deletions
diff --git a/rba.tool.editor/src/rba/tool/editor/validation/validators/AbstractContentValidator.xtend b/rba.tool.editor/src/rba/tool/editor/validation/validators/AbstractContentValidator.xtend
new file mode 100644
index 0000000..3fc2a1a
--- /dev/null
+++ b/rba.tool.editor/src/rba/tool/editor/validation/validators/AbstractContentValidator.xtend
@@ -0,0 +1,59 @@
+package rba.tool.editor.validation.validators
+
+import com.google.common.collect.Sets
+import com.google.inject.Inject
+import java.util.Set
+import org.eclipse.emf.ecore.EObject
+import org.eclipse.emf.ecore.resource.Resource
+import org.eclipse.xtext.util.CancelIndicator
+import org.eclipse.xtext.validation.CancelableDiagnostician
+import org.eclipse.xtext.validation.Check
+import org.eclipse.xtext.validation.EValidatorRegistrar
+import rba.core.AbstractContent
+import rba.tool.editor.util.RBAModelEditorToolUtil
+import rba.tool.editor.validation.AbstractRBAModelValidator
+import rba.tool.editor.validation.ContentAllocatableListValidationHelper
+
+abstract class AbstractContentValidator extends AbstractRBAModelValidator {
+
+	@Inject private ContentAllocatableListValidationHelper helper;
+
+	override register(EValidatorRegistrar registrar) {
+		// not needed for classes used as ComposedCheck
+	}
+
+	@Check(NORMAL)
+	def public void checkCircularContainment(AbstractContent abstractContent) {
+		val context = getContext();
+		val resource = abstractContent.eResource();
+		if(resource === null) {
+			return;
+		}
+
+		if(context !== null) {
+			var Object contextValue;
+			if(context.containsKey(resource)) {
+				contextValue = context.get(resource);
+			}
+			if(!(contextValue instanceof Set<?>)) {
+				context.put(resource, Sets.newHashSet());
+			}
+			if(RBAModelEditorToolUtil.isValidated((contextValue), this)) {
+				return; // resource was already validated
+			}
+
+			(contextValue as Set).add(this);
+			docheckCrossReferenceEmpty(resource, context.get(CancelableDiagnostician.CANCEL_INDICATOR) as CancelIndicator);
+			return;
+		}
+		docheckCrossReferenceEmpty(resource, null);
+	}
+
+	def public void docheckCrossReferenceEmpty(Resource resource, CancelIndicator cancelIndicator) {
+		helper.checkCrossReferenceEmpty(resource, cancelIndicator, this);
+	}
+
+	override protected checkIsFromCurrentlyCheckedResource(EObject object) {
+		// do nothing
+	}
+}