Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.db.common / src / org / simantics / db / common / validation / L0Validations.java

diff --git a/bundles/org.simantics.db.common/src/org/simantics/db/common/validation/L0Validations.java b/bundles/org.simantics.db.common/src/org/simantics/db/common/validation/L0Validations.java
new file mode 100644 (file)
index 0000000..4a81229
--- /dev/null
+++ b/bundles/org.simantics.db.common/src/org/simantics/db/common/validation/L0Validations.java
@@ -0,0 +1,43 @@
+package org.simantics.db.common.validation;\r
+\r
+import org.simantics.databoard.Bindings;\r
+import org.simantics.db.ReadGraph;\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.common.utils.NameUtils;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.layer0.Layer0;\r
+\r
+public class L0Validations {\r
+\r
+       public static String checkValueType(ReadGraph graph, Resource subject, Resource predicate) throws DatabaseException {\r
+               if (subject == null)\r
+                       return null;\r
+               if (predicate == null)\r
+                       return null;\r
+\r
+               Layer0 L0 = Layer0.getInstance(graph);\r
+           if(graph.isSubrelationOf(predicate, L0.HasProperty)) {\r
+                       Resource object = graph.getPossibleObject(subject, predicate);\r
+                       if(object == null) return null;\r
+               String valueType = graph.getPossibleRelatedValue(predicate, L0.RequiresValueType, Bindings.STRING);\r
+               if(valueType != null) {\r
+                       String valueType2 = graph.getPossibleRelatedValue(object, L0.HasValueType, Bindings.STRING);\r
+                       if(!valueType.equals(valueType2)) {\r
+                                       StringBuilder sb = new StringBuilder()\r
+                                       .append("The value type ")\r
+                                       .append(valueType)\r
+                                       .append(" of predicate ")\r
+                                       .append(NameUtils.getSafeName(graph, predicate, true))\r
+                                       .append(" does not match the value type ")\r
+                                       .append(valueType2)\r
+                                       .append(" of object ")\r
+                                       .append(NameUtils.getSafeName(graph, object, true))\r
+                                       .append(".");\r
+                                       return sb.toString();\r
+                       }\r
+               }\r
+           }\r
+           return null;\r
+       }\r
+       \r
+}\r