Restructure modules

[gpl/argeo-slc.git] / runtime / org.argeo.slc.core / src / main / java / org / argeo / slc / core / structure / tree / TreeSRelatedHelper.java

diff --git a/runtime/org.argeo.slc.core/src/main/java/org/argeo/slc/core/structure/tree/TreeSRelatedHelper.java b/runtime/org.argeo.slc.core/src/main/java/org/argeo/slc/core/structure/tree/TreeSRelatedHelper.java
new file mode 100644 (file)
index 0000000..b0cc87b
--- /dev/null
+++ b/runtime/org.argeo.slc.core/src/main/java/org/argeo/slc/core/structure/tree/TreeSRelatedHelper.java
@@ -0,0 +1,58 @@
+package org.argeo.slc.core.structure.tree;\r
+\r
+import org.argeo.slc.core.structure.SimpleSElement;\r
+import org.argeo.slc.structure.StructureAware;\r
+import org.argeo.slc.structure.StructureElement;\r
+import org.argeo.slc.structure.StructureRegistry;\r
+\r
+/**\r
+ * Provides default implementations of some methods of <code>TreeSRelated</code>\r
+ * .\r
+ */\r
+public abstract class TreeSRelatedHelper implements TreeSRelated {\r
+       private TreeSPath basePath;\r
+       private StructureRegistry<TreeSPath> registry;\r
+\r
+       // private ThreadLocal<TreeSPath> basePath = new ThreadLocal<TreeSPath>();\r
+       // private ThreadLocal<StructureRegistry<TreeSPath>> registry = new\r
+       // ThreadLocal<StructureRegistry<TreeSPath>>();\r
+\r
+       public TreeSPath getBasePath() {\r
+               return basePath;\r
+       }\r
+\r
+       public StructureRegistry<TreeSPath> getRegistry() {\r
+               return registry;\r
+       }\r
+\r
+       public void notifyCurrentPath(StructureRegistry<TreeSPath> registry,\r
+                       TreeSPath path) {\r
+               this.basePath = path;\r
+               this.registry = registry;\r
+       }\r
+\r
+       public StructureElement getStructureElement(String key) {\r
+               return new SimpleSElement(key);\r
+       }\r
+\r
+       /**\r
+        * Checks wether the object is {@link StructureAware} and forward path and\r
+        * registry. null safe for both arguments.\r
+        */\r
+       @SuppressWarnings(value = { "unchecked" })\r
+       protected void forwardPath(Object obj, String childName) {\r
+               if (obj == null)\r
+                       return;\r
+\r
+               if (obj instanceof StructureAware && basePath != null) {\r
+                       TreeSPath path;\r
+                       if (childName != null)\r
+                               path = basePath.createChild(childName);\r
+                       else\r
+                               path = basePath;\r
+\r
+                       ((StructureAware<TreeSPath>) obj).notifyCurrentPath(registry, path);\r
+               }\r
+       }\r
+\r
+}\r