Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.db.layer0 / src / org / simantics / db / layer0 / adapter / LiteralVariableStringAdapter.java

diff --git a/bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/adapter/LiteralVariableStringAdapter.java b/bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/adapter/LiteralVariableStringAdapter.java
new file mode 100644 (file)
index 0000000..8993d7e
--- /dev/null
+++ b/bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/adapter/LiteralVariableStringAdapter.java
@@ -0,0 +1,43 @@
+package org.simantics.db.layer0.adapter;\r
+\r
+import org.simantics.common.format.Formatter;\r
+import org.simantics.databoard.Bindings;\r
+import org.simantics.db.AsyncReadGraph;\r
+import org.simantics.db.ReadGraph;\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.adaption.Adapter;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.db.layer0.variable.Variable;\r
+import org.simantics.db.procedure.AsyncProcedure;\r
+import org.simantics.db.request.Read;\r
+import org.simantics.layer0.Layer0;\r
+\r
+public class LiteralVariableStringAdapter implements Adapter<String, Variable> {\r
+\r
+    @Override\r
+    public void adapt(AsyncReadGraph g, final Resource source, final Variable variable, final AsyncProcedure<String> procedure) {\r
+       g.asyncRequest(new Read<String>() {\r
+\r
+                       @Override\r
+                       public String perform(ReadGraph graph) throws DatabaseException {\r
+                               \r
+                               Resource literal = variable.getPossibleRepresents(graph);\r
+                               String label = graph.getPossibleRelatedAdapter(literal, graph.getService(Layer0.class).HasLabel, String.class);\r
+                               if(label != null) return label;\r
+                               String name = graph.getPossibleRelatedValue(literal, graph.getService(Layer0.class).HasName, Bindings.STRING);\r
+                               if(name != null) return name;\r
+                               \r
+                               Object value = variable.getValue(graph);\r
+                               Formatter formatter = graph.getPossibleContextualAdapter(literal, variable, Variable.class, Formatter.class);\r
+                               if(formatter != null) {\r
+                                       return formatter.format(value);\r
+                               } else {\r
+                                       return value == null ? "<no value>" : value.toString();\r
+                               }\r
+                               \r
+                       }\r
+               \r
+       }, procedure);\r
+    }\r
+    \r
+}\r