Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.databoard / src / org / simantics / databoard / binding / classfactory / TypeClassFactory.java

diff --git a/bundles/org.simantics.databoard/src/org/simantics/databoard/binding/classfactory/TypeClassFactory.java b/bundles/org.simantics.databoard/src/org/simantics/databoard/binding/classfactory/TypeClassFactory.java
new file mode 100644 (file)
index 0000000..3931c89
--- /dev/null
+++ b/bundles/org.simantics.databoard/src/org/simantics/databoard/binding/classfactory/TypeClassFactory.java
@@ -0,0 +1,107 @@
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2011 Association for Decentralized Information Management in\r
+ * Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ *     VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.databoard.binding.classfactory;\r
+\r
+import java.util.ArrayList;\r
+import java.util.HashMap;\r
+import java.util.List;\r
+import java.util.Map;\r
+import org.simantics.databoard.binding.error.BindingConstructionException;\r
+import org.simantics.databoard.binding.factory.TypeRepository;\r
+import org.simantics.databoard.binding.reflection.BindingRequest;\r
+import org.simantics.databoard.type.Datatype;\r
+\r
+/**\r
+ * Creates class for a type. \r
+ * \r
+ * @author toni.kalajainen\r
+ */\r
+public class TypeClassFactory {\r
+       \r
+       /**\r
+        * Map of failed constructions. \r
+        */\r
+       Map<Datatype, BindingConstructionException> failures = new HashMap<Datatype, BindingConstructionException>();\r
+       \r
+       /**\r
+        * Map that contains in incomplete constructions.\r
+        */\r
+       Map<Datatype, Datatype> inprogress = new HashMap<Datatype, Datatype>();\r
+       \r
+       /**\r
+        * Repository where successful constructions are placed. \r
+        */\r
+       TypeRepository repository;\r
+       \r
+       List<TypeClassSubFactory> subFactories = new ArrayList<TypeClassSubFactory>();  \r
+       \r
+       public TypeClassFactory() {\r
+               repository = new TypeRepository(); \r
+       }\r
+       \r
+       public TypeClassFactory(TypeRepository repository)\r
+       {\r
+               this.repository = repository;\r
+       }       \r
+       \r
+       public void addFactory(TypeClassSubFactory factory) \r
+       {\r
+               if (!subFactories.contains(factory)) {\r
+                       this.subFactories.add(factory);\r
+               }\r
+       }\r
+       \r
+       public void addFactoryFirst(TypeClassSubFactory factory) \r
+       {\r
+               if (!subFactories.contains(factory)) {\r
+                       this.subFactories.add(0, factory);\r
+               }\r
+       }\r
+       \r
+       \r
+       public BindingRequest getClass(Datatype type) throws BindingConstructionException\r
+       {\r
+               Datatype progress = inprogress.get(type);\r
+               if (progress != null) { synchronized(progress) {} }\r
+               if (failures.containsKey(type)) throw failures.get(type);\r
+               if (repository.containsType(type)) return repository.getRequestForType(type);\r
+               \r
+               // Start construction\r
+               synchronized(type) {\r
+                       inprogress.put(type, type);\r
+                       try {   \r
+                               BindingRequest br = null;\r
+                               for ( TypeClassSubFactory sf : subFactories ) {\r
+                                       br = sf.construct(this, type);\r
+                                       if ( br != null ) break;\r
+                               }\r
+                               if (br==null) throw new BindingConstructionException("Failed to create BindingRequest for type "+type);\r
+                               repository.put(type, br);\r
+                               return br;\r
+                       } catch (RuntimeException e) {\r
+                               failures.put(type, new BindingConstructionException(e));\r
+                               throw e;\r
+                       } catch (BindingConstructionException bce) {\r
+                               failures.put(type, bce);\r
+                               throw bce;\r
+                       } finally {\r
+                               inprogress.remove(type);\r
+                       }\r
+               }\r
+               \r
+       }\r
+       \r
+       public TypeRepository getRepository() {\r
+               return repository;\r
+       }\r
+       \r
+}\r