From: Marko Luukkainen <marko.luukkainen@semantum.fi>
Date: Fri, 15 Mar 2019 13:46:25 +0000 (+0200)
Subject: Allow loading databoard serialized files with type adapting
X-Git-Tag: v1.43.0~136^2~178
X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=commitdiff_plain;h=refs%2Fchanges%2F78%2F2778%2F1;p=simantics%2Fplatform.git

Allow loading databoard serialized files with type adapting

refs #273


Change-Id: I8aeb070809910ae502ead24bcb87eeba3142bf22
(cherry picked from commit 4797ec6414d21a81c5e0b23bf8a48b356b6711c5)
---

diff --git a/bundles/org.simantics.databoard/src/org/simantics/databoard/Files.java b/bundles/org.simantics.databoard/src/org/simantics/databoard/Files.java
index cc41e8e9b..35c8822d5 100644
--- a/bundles/org.simantics.databoard/src/org/simantics/databoard/Files.java
+++ b/bundles/org.simantics.databoard/src/org/simantics/databoard/Files.java
@@ -188,8 +188,7 @@ public class Files {
 	public static Datatype readFileType(File file) throws IOException {
 		BinaryFile rf = new BinaryFile( file, "r" );
 		try {
-			Binding datatype_binding = Bindings.getBindingUnchecked( Datatype.class );
-			return (Datatype) Bindings.getSerializerUnchecked( datatype_binding ).deserialize( rf );
+			return (Datatype) Bindings.getSerializerUnchecked( Bindings.DATATYPE ).deserialize( rf );
 		} finally {
 			rf.close();
 		}		
@@ -208,8 +207,7 @@ public class Files {
 	public static Object readFile(File file, Binding binding) throws IOException {
 		BinaryFile rf = new BinaryFile( file, "r" );
 		try {
-			Binding datatype_binding = Bindings.getBindingUnchecked( Datatype.class );
-			Datatype type = (Datatype) Bindings.getSerializerUnchecked( datatype_binding ).deserialize( rf );
+			Datatype type = (Datatype) Bindings.getSerializerUnchecked( Bindings.DATATYPE ).deserialize( rf );
 			
 			if (type.equals(binding.type())) {
 				return Bindings.getSerializerUnchecked( binding ).deserialize(rf);
@@ -229,6 +227,30 @@ public class Files {
 			rf.close();
 		}
 	}
+	
+	public static Object readFileTypeAdapting(File file, Binding binding) throws IOException {
+        BinaryFile rf = new BinaryFile( file, "r" );
+        try {
+            Datatype type = (Datatype) Bindings.getSerializerUnchecked( Bindings.DATATYPE ).deserialize( rf );
+            
+            if (type.equals(binding.type())) {
+                return Bindings.getSerializerUnchecked( binding ).deserialize(rf);
+            } else {
+                try {
+                    Binding fileContentBinding = Bindings.getMutableBinding(type);
+                    Adapter adapter = Bindings.getTypeAdapter(fileContentBinding, binding);
+                    Object value = Bindings.getSerializerUnchecked( fileContentBinding ).deserialize(rf);
+                    return adapter.adapt( value );
+                } catch (AdapterConstructionException e) {
+                    throw new IOException(e);
+                } catch (AdaptException e) {
+                    throw new IOException(e);
+                }
+            }
+        } finally {
+            rf.close();
+        }
+    }
 
 	/**
 	 * Read a file to an object.
@@ -241,8 +263,7 @@ public class Files {
 	public static void readFile(File file, RecordBinding binding, Object dst) throws IOException {
 		BinaryFile rf = new BinaryFile( file, "r" );
 		try {
-			Binding datatype_binding = Bindings.getBindingUnchecked( Datatype.class );
-			Datatype type = (Datatype) Bindings.getSerializerUnchecked( datatype_binding ).deserialize( rf );
+			Datatype type = (Datatype) Bindings.getSerializerUnchecked( Bindings.DATATYPE ).deserialize( rf );
 			
 			if (type.equals(binding.type())) {
 				Serializer s = Bindings.getSerializerUnchecked( binding ); 
@@ -276,8 +297,7 @@ public class Files {
 	 */
 	public static Object readFile(InputStream is, Binding binding) throws IOException {
 		BinaryReadable readable = InputStreamReadable.readFully( is );
-		Binding datatype_binding = Bindings.getBindingUnchecked( Datatype.class );
-		Datatype type = (Datatype) Bindings.getSerializerUnchecked( datatype_binding ).deserialize( readable );
+		Datatype type = (Datatype) Bindings.getSerializerUnchecked( Bindings.DATATYPE ).deserialize( readable );
 			
 		if (!type.equals(binding.type())) {
 			try {
@@ -308,8 +328,7 @@ public class Files {
 	 */
 	public static Object readFile(InputStream is, long streamLength, Binding binding) throws IOException {
 		BinaryReadable readable = new InputStreamReadable( is, streamLength );
-		Binding datatype_binding = Bindings.getBindingUnchecked( Datatype.class );
-		Datatype type = (Datatype) Bindings.getSerializerUnchecked( datatype_binding ).deserialize( readable );
+		Datatype type = (Datatype) Bindings.getSerializerUnchecked( Bindings.DATATYPE ).deserialize( readable );
 			
 		if (!type.equals(binding.type())) {
 			try {