Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.db.layer0 / src / org / simantics / db / layer0 / util / RevisionTGValueModifier.java

diff --git a/bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/util/RevisionTGValueModifier.java b/bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/util/RevisionTGValueModifier.java
new file mode 100644 (file)
index 0000000..f5ce368
--- /dev/null
+++ b/bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/util/RevisionTGValueModifier.java
@@ -0,0 +1,23 @@
+package org.simantics.db.layer0.util;\r
+\r
+import org.simantics.databoard.binding.Binding;\r
+import org.simantics.databoard.type.Datatype;\r
+import org.simantics.databoard.type.LongType;\r
+import org.simantics.db.exception.DatabaseException;\r
+\r
+public enum RevisionTGValueModifier implements TGValueModifier {\r
+    INSTANCE;\r
+    \r
+    public static final Long DEFAULT_VALUE = Long.valueOf(-1); \r
+    \r
+    @Override\r
+    public boolean mayNeedModification(Datatype type) {\r
+        return type instanceof LongType \r
+                && "revision".equals(type.metadata.get("unit"));\r
+    }\r
+\r
+    @Override\r
+    public Object modify(final DomainProcessorState state, Binding binding, Object value) throws DatabaseException {\r
+        return DEFAULT_VALUE;\r
+    }\r
+}\r