--- /dev/null
+/*******************************************************************************\r
+ * Copyright (c) 2010 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.impl;
+
+import java.util.Set;\r
+\r
+import org.simantics.databoard.adapter.AdaptException;\r
+import org.simantics.databoard.adapter.AdapterFactory;\r
+import org.simantics.databoard.binding.Binding;\r
+import org.simantics.databoard.binding.RecordBinding;\r
+import org.simantics.databoard.binding.UnionBinding;\r
+import org.simantics.databoard.binding.VariantBinding;\r
+import org.simantics.databoard.binding.error.BindingConstructionException;\r
+import org.simantics.databoard.binding.error.BindingException;\r
+import org.simantics.databoard.binding.factory.BindingRepository;\r
+import org.simantics.databoard.binding.reflection.BindingRequest;\r
+import org.simantics.databoard.binding.reflection.ClassBindingFactory;\r
+import org.simantics.databoard.binding.reflection.VoidBinding;\r
+import org.simantics.databoard.type.Datatype;\r
+import org.simantics.databoard.type.RecordType;\r
+import org.simantics.databoard.type.UnionType;\r
+
+/**
+ * ObjectVariantBinding binds VariantType and Object.class.
+ * The implementation is immutable as Object.class is not a container, it is
+ * a value. <p>
+ *
+ * ObjectVariantBinding understands many classes \r
+ * Collections: ArrayList, List, LinkedList, int[], .., other arrays [], Map, TreeMap, HashMap, Set, HashSet, TreeSet, \r
+ * Strings: String\r
+ * immutable primitives: Integer, Boolean, ...\r
+ * mutable primitives: MutableInteger, MutableBoolean, ...\r
+ * classes: Record-classes, Bean-Classes, Immutable-Classes \r
+ * <code>null</code> is bound to a void.\r
+ *
+ * @author Toni Kalajainen <toni.kalajainen@vtt.fi>
+ */
+public class ObjectVariantBinding extends VariantBinding {
+ \r
+ ClassBindingFactory bindingFactory;
+ AdapterFactory adapterFactory;\r
+
+ public ObjectVariantBinding(ClassBindingFactory bindingFactory, AdapterFactory adapterFactory) {\r
+ this.bindingFactory = bindingFactory;\r
+ this.adapterFactory = adapterFactory;
+ }
+\r
+ public ClassBindingFactory getBindingFactory() {\r
+ return bindingFactory;\r
+ }\r
+ \r
+ public BindingRepository getRepository() {\r
+ return bindingFactory.getRepository();\r
+ }\r
+
+ @Override
+ public Object create(Binding srcBinding, Object value) throws BindingException {
+ if (srcBinding instanceof VoidBinding) return null;\r
+ return value;\r
+
+/* try {\r
+ //Annotation[] annotations = new Annotation[ srcBinding.getComponentCount() ]; \r
+ BindingRequest request = new BindingRequest( value.getClass() );\r
+ //request.componentBinding = srcBinding.getComponentCount()>0?srcBinding.getComponentBinding(0):null;\r
+ Binding dstBinding = bindingFactory.getBinding( request );\r
+ return adapterFactory.adapt(value, srcBinding, dstBinding);
+ } catch (BindingConstructionException e) {
+ throw new BindingException(e);
+ } catch (AdaptException e) {
+ throw new BindingException(e);
+ }*/
+ }
+
+ @Override
+ public Binding getContentBinding(Object variant) throws BindingException {
+ try {
+ if (variant==null) return VoidBinding.VOID_BINDING;
+ BindingRequest request = new BindingRequest(variant.getClass());\r
+ return bindingFactory.construct(request);\r
+ } catch (BindingConstructionException e) {
+ throw new BindingException(e);
+ }
+ }
+
+ @Override
+ public Datatype getContentType(Object variant) throws BindingException {\r
+ return getContentBinding(variant).type();
+ }
+
+ @Override
+ public Object getContent(Object variant, Binding binding)
+ throws BindingException {
+ try {
+ Binding binding1 = getContentBinding(variant);
+ Object value1 = variant;
+
+ Binding binding2 = binding;
+ Object value2 = adapterFactory.adapt(value1, binding1, binding2);
+
+ return value2;
+ } catch (AdaptException e) {
+ throw new BindingException(e);
+ }
+ }
+
+ @Override
+ public Object getContent(Object variant)
+ throws BindingException {
+ return variant;
+ }
+
+ @Override
+ public void setContent(Object variant, Binding binding, Object value)
+ throws BindingException {\r
+ if (variant==value) return;
+ try {
+ Binding binding1 = getContentBinding(variant);
+ Datatype type1 = binding1.type();
+
+ Binding binding2 = binding;
+ Datatype type2 = binding2.type();
+
+ // New value cannot be assigned to Object from different data type
+ if (!type1.equals(type2)) {
+ throw new BindingException("Cannot assign "+value.getClass()+" to "+variant.getClass());
+ }
+
+ // Can only assing to union or record of previous type
+ if (type1 instanceof RecordType) {
+ RecordType recordType = (RecordType) type1;
+ int count = recordType.getComponentCount();
+ RecordBinding rb1 = (RecordBinding) binding1;
+ RecordBinding rb2 = (RecordBinding) binding2;
+ Object resultValues[] = new Object[count];
+ for (int i=0; i<count; i++) {
+ Binding cb1 = rb1.componentBindings[i];
+ Binding cb2 = rb2.componentBindings[i];
+
+ Object componentValue2 = rb2.getComponent(value, i);
+ Object componentValue1 = adapterFactory.adapt(componentValue2, cb2, cb1);
+ resultValues[i] = componentValue1;
+ }
+ rb1.setComponents(variant, resultValues);
+ } else if (type1 instanceof UnionType) {
+ UnionBinding ub1 = (UnionBinding) binding1;
+ UnionBinding ub2 = (UnionBinding) binding2;
+ int tag = ub2.getTag(value);
+ Binding cb1 = ub1.getComponentBindings()[tag];
+ Binding cb2 = ub2.getComponentBindings()[tag];
+
+ Object componentValue2 = ub2.getValue(value);
+ Object componentValue1 = adapterFactory.adapt(componentValue2, cb2, cb1);
+
+ ub1.setValue(variant, tag, componentValue1);
+ } else {
+ throw new BindingException("Cannot assign "+value.getClass()+" to "+variant.getClass());
+ }
+
+ } catch (AdaptException e) {
+ throw new BindingException(e);
+ }
+
+ }
+
+ @Override
+ public void assertInstaceIsValid(Object obj, Set<Object> validInstances) throws BindingException {
+ getContentBinding(obj).assertInstaceIsValid(obj);
+ }
+
+ @Override
+ public boolean isInstance(Object obj) {
+ return true;
+ }
+
+ @Override
+ public boolean isImmutable() {
+ return true;
+ }
+\r
+ @Override\r
+ protected boolean baseEquals(Object obj) {\r
+ ObjectVariantBinding o = (ObjectVariantBinding)obj;\r
+ return super.baseEquals( obj ) && o.adapterFactory == adapterFactory && o.bindingFactory == bindingFactory;\r
+ }
+}
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