X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;ds=sidebyside;f=bundles%2Forg.simantics.databoard%2Fsrc%2Forg%2Fsimantics%2Fdataboard%2Fbinding%2Fimpl%2FObjectVariantBinding.java;fp=bundles%2Forg.simantics.databoard%2Fsrc%2Forg%2Fsimantics%2Fdataboard%2Fbinding%2Fimpl%2FObjectVariantBinding.java;h=fba7befe2bfe01a9033ee3da5f6442a2e88f2883;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git
diff --git a/bundles/org.simantics.databoard/src/org/simantics/databoard/binding/impl/ObjectVariantBinding.java b/bundles/org.simantics.databoard/src/org/simantics/databoard/binding/impl/ObjectVariantBinding.java
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+++ b/bundles/org.simantics.databoard/src/org/simantics/databoard/binding/impl/ObjectVariantBinding.java
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+/*******************************************************************************
+ * Copyright (c) 2010 Association for Decentralized Information Management in
+ * Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ * VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.databoard.binding.impl;
+
+import java.util.Set;
+
+import org.simantics.databoard.adapter.AdaptException;
+import org.simantics.databoard.adapter.AdapterFactory;
+import org.simantics.databoard.binding.Binding;
+import org.simantics.databoard.binding.RecordBinding;
+import org.simantics.databoard.binding.UnionBinding;
+import org.simantics.databoard.binding.VariantBinding;
+import org.simantics.databoard.binding.error.BindingConstructionException;
+import org.simantics.databoard.binding.error.BindingException;
+import org.simantics.databoard.binding.factory.BindingRepository;
+import org.simantics.databoard.binding.reflection.BindingRequest;
+import org.simantics.databoard.binding.reflection.ClassBindingFactory;
+import org.simantics.databoard.binding.reflection.VoidBinding;
+import org.simantics.databoard.type.Datatype;
+import org.simantics.databoard.type.RecordType;
+import org.simantics.databoard.type.UnionType;
+
+/**
+ * ObjectVariantBinding binds VariantType and Object.class.
+ * The implementation is immutable as Object.class is not a container, it is
+ * a value.
+ *
+ * ObjectVariantBinding understands many classes
+ * Collections: ArrayList, List, LinkedList, int[], .., other arrays [], Map, TreeMap, HashMap, Set, HashSet, TreeSet,
+ * Strings: String
+ * immutable primitives: Integer, Boolean, ...
+ * mutable primitives: MutableInteger, MutableBoolean, ...
+ * classes: Record-classes, Bean-Classes, Immutable-Classes
+ * null
is bound to a void.
+ *
+ * @author Toni Kalajainen
+ */
+public class ObjectVariantBinding extends VariantBinding {
+
+ ClassBindingFactory bindingFactory;
+ AdapterFactory adapterFactory;
+
+ public ObjectVariantBinding(ClassBindingFactory bindingFactory, AdapterFactory adapterFactory) {
+ this.bindingFactory = bindingFactory;
+ this.adapterFactory = adapterFactory;
+ }
+
+ public ClassBindingFactory getBindingFactory() {
+ return bindingFactory;
+ }
+
+ public BindingRepository getRepository() {
+ return bindingFactory.getRepository();
+ }
+
+ @Override
+ public Object create(Binding srcBinding, Object value) throws BindingException {
+ if (srcBinding instanceof VoidBinding) return null;
+ return value;
+
+/* try {
+ //Annotation[] annotations = new Annotation[ srcBinding.getComponentCount() ];
+ BindingRequest request = new BindingRequest( value.getClass() );
+ //request.componentBinding = srcBinding.getComponentCount()>0?srcBinding.getComponentBinding(0):null;
+ Binding dstBinding = bindingFactory.getBinding( request );
+ 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());
+ return bindingFactory.construct(request);
+ } catch (BindingConstructionException e) {
+ throw new BindingException(e);
+ }
+ }
+
+ @Override
+ public Datatype getContentType(Object variant) throws BindingException {
+ 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 {
+ 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 validInstances) throws BindingException {
+ getContentBinding(obj).assertInstaceIsValid(obj);
+ }
+
+ @Override
+ public boolean isInstance(Object obj) {
+ return true;
+ }
+
+ @Override
+ public boolean isImmutable() {
+ return true;
+ }
+
+ @Override
+ protected boolean baseEquals(Object obj) {
+ ObjectVariantBinding o = (ObjectVariantBinding)obj;
+ return super.baseEquals( obj ) && o.adapterFactory == adapterFactory && o.bindingFactory == bindingFactory;
+ }
+}