1 files changed, 31 insertions, 0 deletions
diff --git a/rba.tool.editor/src/rba/tool/editor/validation/validators/PackageValidator.xtend b/rba.tool.editor/src/rba/tool/editor/validation/validators/PackageValidator.xtend
new file mode 100644
index 0000000..39f2084
--- /dev/null
+++ b/rba.tool.editor/src/rba/tool/editor/validation/validators/PackageValidator.xtend
@@ -0,0 +1,31 @@
+package rba.tool.editor.validation.validators
+
+import org.eclipse.xtext.validation.Check
+import org.eclipse.xtext.validation.EValidatorRegistrar
+import rba.core.Package
+import rba.core.RBACorePackage
+import rba.tool.editor.messages.Messages
+import rba.tool.editor.validation.AbstractRBAModelValidator
+import rba.core.Project
+
+class PackageValidator extends AbstractRBAModelValidator {
+
+	private String PACKAGE_CHILD_EXISTENCE_CHECK = Messages.PACKAGE_CHILD_EXISTENCE_CHECK;
+
+	override register(EValidatorRegistrar registrar) {
+		// not needed for classes used as ComposedCheck
+	}
+
+	@Check(NORMAL)
+	def checkPackage(Package pack) {
+		if(pack instanceof Project)
+		{
+			return;
+		}
+		if (pack.packagableelement.size == 0) {
+			warning(String.format(PACKAGE_CHILD_EXISTENCE_CHECK, pack.name),
+				RBACorePackage.Literals.PACKAGE__PACKAGABLEELEMENT);
+			return;
+		}
+	}
+}