From 5750b207d04063d1b2f0128eb5296d22ffec302e Mon Sep 17 00:00:00 2001
From: Reino Ruusu <reino.ruusu@semantum.fi>
Date: Wed, 30 Oct 2019 15:53:09 +0200
Subject: [PATCH] Refactoring of SCLUtil to allow customization

Change-Id: Ic491c6424b96c53da35ac61fb1ace9239047bb3b
---
 .../org/simantics/plant3d/scl/SCLUtil.java    | 64 ++++++++++++-------
 1 file changed, 42 insertions(+), 22 deletions(-)

diff --git a/org.simantics.plant3d/src/org/simantics/plant3d/scl/SCLUtil.java b/org.simantics.plant3d/src/org/simantics/plant3d/scl/SCLUtil.java
index 10708030..cdbf6626 100644
--- a/org.simantics.plant3d/src/org/simantics/plant3d/scl/SCLUtil.java
+++ b/org.simantics.plant3d/src/org/simantics/plant3d/scl/SCLUtil.java
@@ -1,6 +1,5 @@
 package org.simantics.plant3d.scl;
 
-
 import org.simantics.Simantics;
 import org.simantics.db.ReadGraph;
 import org.simantics.db.Resource;
@@ -18,21 +17,47 @@ import org.simantics.plant3d.utils.ComponentUtils;
 import org.simantics.plant3d.utils.P3DUtil;
 
 public class SCLUtil {
+
+	public static interface SchemaProvider {
+		IMappingSchema<Resource,Object> get(ReadGraph graph) throws DatabaseException;
+	}
+
+	public static interface NodeMapProvider {
+		P3DScriptNodeMap get(IMapping<Resource, Object> mapping, P3DRootNode rootNode);
+	}
 	
 	public static P3DScriptNodeMap load(final Resource root) throws DatabaseException {
+		preload(Plant3D.URIs.Builtin);
+
+		SchemaProvider schemaProvider = g -> SchemaBuilder.getSchema(g);
+		NodeMapProvider mapProvider = (mapping, rootNode) -> new P3DScriptNodeMap(Simantics.getSession(), mapping, rootNode);
+		return load(root, schemaProvider, mapProvider);
+	}
+
+	public static P3DRootNode loadReadOnly(final Resource root) throws DatabaseException {
+		preload(Plant3D.URIs.Builtin);
+		
+		SchemaProvider schemaProvider = g -> SchemaBuilder.getSchema(g);
+		return loadReadOnly(root, schemaProvider);
+	}
+
+	public static void preload(String symbolSet) throws DatabaseException {
 		try {
-			ControlPointFactory.preloadCache(Plant3D.URIs.Builtin);
+			ControlPointFactory.preloadCache(symbolSet);
 			ComponentUtils.preloadCache();
 		} catch (Exception e) {
 			throw new DatabaseException(e);
 		}
-		return Simantics.getSession().syncRequest(new Read<P3DScriptNodeMap>() {
+	}
+
+	public static <NodeMap extends P3DScriptNodeMap> NodeMap load(final Resource root, SchemaProvider schemaProvider, NodeMapProvider mapProvider) throws DatabaseException {
+		return Simantics.getSession().syncRequest(new Read<NodeMap>() {
 			@Override
-			public P3DScriptNodeMap perform(ReadGraph graph) throws DatabaseException {
+			public NodeMap perform(ReadGraph graph) throws DatabaseException {
 				PipingRules.setEnabled(false);
-				IMappingSchema<Resource, Object> schema = SchemaBuilder.getSchema(graph);
+				IMappingSchema<Resource, Object> schema = schemaProvider.get(graph);
 				IMapping<Resource, Object> mapping = Mappings.createWithListening(schema);
-				P3DRootNode rootNode = (P3DRootNode)mapping.map(graph, root);
+				P3DRootNode rootNode = (P3DRootNode) mapping.map(graph, root);
 				try {
 					P3DUtil.finalizeDBLoad(rootNode);
 					// FIXME: Something needs to be done here...
@@ -40,28 +65,24 @@ public class SCLUtil {
 				} catch (Exception e) {
 					throw new DatabaseException(e);
 				}
-				P3DScriptNodeMap nodeMap = new P3DScriptNodeMap(Simantics.getSession(), mapping, rootNode);
-				return nodeMap;
 				
+				@SuppressWarnings("unchecked")
+				NodeMap nodeMap = (NodeMap) mapProvider.get(mapping, rootNode);
+				return nodeMap;
 			}
 		});
-		
 	}
-	
-	public static P3DRootNode loadReadOnly(final Resource root) throws DatabaseException {
-		try {
-			ControlPointFactory.preloadCache(Plant3D.URIs.Builtin);
-			ComponentUtils.preloadCache();
-		} catch (Exception e) {
-			throw new DatabaseException(e);
-		}
-		return Simantics.getSession().syncRequest(new Read<P3DRootNode>() {
+
+	public static <Root extends P3DRootNode> Root loadReadOnly(final Resource root, SchemaProvider schemaProvider)
+			throws DatabaseException {
+		return Simantics.getSession().syncRequest(new Read<Root>() {
 			@Override
-			public P3DRootNode perform(ReadGraph graph) throws DatabaseException {
+			public Root perform(ReadGraph graph) throws DatabaseException {
 				PipingRules.setEnabled(false);
-				IMappingSchema<Resource, Object> schema = SchemaBuilder.getSchema(graph);
+				IMappingSchema<Resource, Object> schema = schemaProvider.get(graph);
 				IMapping<Resource, Object> mapping = Mappings.createWithoutListening(schema);
-				P3DRootNode rootNode = (P3DRootNode)mapping.map(graph, root);
+				@SuppressWarnings("unchecked")
+				Root rootNode = (Root) mapping.map(graph, root);
 				try {
 					P3DUtil.finalizeDBLoad(rootNode);
 					P3DUtil.finalizeDBLoad2(rootNode);
@@ -69,7 +90,6 @@ public class SCLUtil {
 					throw new DatabaseException(e);
 				}
 				return rootNode;
-				
 			}
 		});
 	}
-- 
2.45.2