Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.databoard / src / org / simantics / databoard / binding / reflection / AsmBindingProvider.java

diff --git a/bundles/org.simantics.databoard/src/org/simantics/databoard/binding/reflection/AsmBindingProvider.java b/bundles/org.simantics.databoard/src/org/simantics/databoard/binding/reflection/AsmBindingProvider.java
new file mode 100644 (file)
index 0000000..fe08480
--- /dev/null
+++ b/bundles/org.simantics.databoard/src/org/simantics/databoard/binding/reflection/AsmBindingProvider.java
@@ -0,0 +1,73 @@
+/*******************************************************************************\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.reflection;\r
+\r
+import java.lang.reflect.Constructor;\r
+import java.lang.reflect.InvocationTargetException;\r
+import java.util.WeakHashMap;\r
+\r
+import org.simantics.databoard.binding.Binding;\r
+import org.simantics.databoard.binding.RecordBinding;\r
+import org.simantics.databoard.binding.error.BindingConstructionException;\r
+import org.simantics.databoard.type.RecordType;\r
+\r
+/**\r
+ * AsmBindingFactory creates code-generated bindings for classes.\r
+ * \r
+ * @author toni.kalajainen\r
+ */\r
+public class AsmBindingProvider implements RecordBindingProvider {\r
+       \r
+       WeakHashMap<ClassLoader, AsmBindingClassLoader> bindingClassLoaders = new WeakHashMap<ClassLoader, AsmBindingClassLoader>();\r
+\r
+       public AsmBindingProvider() {           \r
+       }\r
+\r
+       @Override\r
+       public synchronized RecordBinding provideRecordBinding(Class<?> clazz, RecordType type)\r
+                       throws BindingConstructionException {\r
+               \r
+               ClassLoader cl = clazz.getClassLoader();\r
+               if (cl == null) {\r
+                       cl = Thread.currentThread().getContextClassLoader();\r
+               }\r
+               AsmBindingClassLoader bcl = bindingClassLoaders.get(cl);\r
+               if ( bcl == null ) {\r
+                       bcl = new AsmBindingClassLoader(cl);\r
+                       bindingClassLoaders.put(cl, bcl);\r
+               }\r
+               \r
+               ClassInfo ci = ClassInfo.getInfo(clazz);\r
+               try {                   \r
+                       Class<?> bindingClass = bcl.getBindingClass( clazz );\r
+                       Constructor<?> c = bindingClass.getConstructor( RecordType.class );\r
+                       RecordBinding binding = (RecordBinding) c.newInstance( type );\r
+               binding.componentBindings = new Binding[ ci.fields.length ];  \r
+                       return binding;\r
+               } catch (InstantiationException e) {\r
+                       throw new BindingConstructionException(e);\r
+               } catch (IllegalAccessException e) {\r
+                       throw new BindingConstructionException(e);\r
+               } catch (SecurityException e) {\r
+                       throw new BindingConstructionException(e);\r
+               } catch (NoSuchMethodException e) {\r
+                       throw new BindingConstructionException(e);\r
+               } catch (IllegalArgumentException e) {\r
+                       throw new BindingConstructionException(e);\r
+               } catch (InvocationTargetException e) {\r
+                       throw new BindingConstructionException(e);\r
+               } catch (ClassNotFoundException e) {\r
+                       throw new BindingConstructionException(e);\r
+               }\r
+       }\r
+                       \r
+}\r