From 0e26f753a2d123c1f94faaebf676ead4b59d470d Mon Sep 17 00:00:00 2001
From: Reino Ruusu <reino.ruusu@semantum.fi>
Date: Mon, 21 Sep 2020 18:16:07 +0300
Subject: [PATCH] Add an SCL interface for loading tech type files

gitlab #93

Change-Id: Ie6d3fa4ccd71d967422c798bb7834c57cabd9416
---
 .../scl/Simantics/District/TechType.scl       |  2 ++
 .../network/techtype/TechTypeUtils.java       | 33 ++++++++++++++++++-
 2 files changed, 34 insertions(+), 1 deletion(-)

diff --git a/org.simantics.district.network/scl/Simantics/District/TechType.scl b/org.simantics.district.network/scl/Simantics/District/TechType.scl
index 18663b85..e8ab4eec 100644
--- a/org.simantics.district.network/scl/Simantics/District/TechType.scl
+++ b/org.simantics.district.network/scl/Simantics/District/TechType.scl
@@ -7,3 +7,5 @@ importJava "org.simantics.district.network.techtype.TechTypeUtils" where
     resetComponents :: Resource -> <Proc> ()
     "Reset all map diagram elements to values in a tech type table: `resetMapElements table`"
     resetMapElements :: Resource -> <Proc> ()
+    "Load a tech type table for a given component type from a CSV file: `loadTechTypeTable componentType filePath`"
+    loadTechTypeTable :: Resource -> String -> <Proc> ()
diff --git a/org.simantics.district.network/src/org/simantics/district/network/techtype/TechTypeUtils.java b/org.simantics.district.network/src/org/simantics/district/network/techtype/TechTypeUtils.java
index 66280d12..92eef4fe 100644
--- a/org.simantics.district.network/src/org/simantics/district/network/techtype/TechTypeUtils.java
+++ b/org.simantics.district.network/src/org/simantics/district/network/techtype/TechTypeUtils.java
@@ -1,9 +1,14 @@
 package org.simantics.district.network.techtype;
 
+import java.io.IOException;
+import java.nio.charset.Charset;
+import java.nio.file.Files;
+import java.nio.file.Paths;
 import java.util.Collection;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.Objects;
+import java.util.stream.Collectors;
 
 import org.simantics.Simantics;
 import org.simantics.databoard.Bindings;
@@ -30,6 +35,7 @@ import org.simantics.district.network.techtype.requests.PossibleTechTypeItem;
 import org.simantics.district.network.techtype.requests.PossibleTechTypeTable;
 import org.simantics.district.network.techtype.requests.TechTypeTableData;
 import org.simantics.district.network.techtype.requests.TechTypeTableKeyName;
+import org.simantics.district.network.techtype.requests.WriteTechTypeTable;
 import org.simantics.layer0.Layer0;
 import org.simantics.scl.runtime.SCLContext;
 import org.simantics.structural.stubs.StructuralResource2;
@@ -42,6 +48,31 @@ public class TechTypeUtils {
 
 	public static String DEFAULT_KEY_NAME = "pipeCode";
 
+	/**
+	 * Load a tech type table from a CSV file and write it in the active model.
+	 * 
+	 * @param componentType  The component type that the tech type table is associated with
+	 * @param filePath  A path to a CSV file
+	 * @throws DatabaseException
+	 * @throws IOException
+	 */
+	public static void loadTechTypeTable(Resource componentType, String filePath) throws DatabaseException, IOException {
+		String data;
+		try {
+			data = Files.lines(Paths.get(filePath), Charset.defaultCharset()).collect(Collectors.joining("\n"));
+		} catch (IOException e) {
+			LOGGER.error("Failed to read contents of file '{}' as {}", filePath, Charset.defaultCharset(), e);
+			return;
+		}
+
+		Simantics.getSession().syncRequest(new WriteRequest() {
+			@Override
+			public void perform(WriteGraph graph) throws DatabaseException {
+				graph.syncRequest(new WriteTechTypeTable(componentType, data));
+			}
+		});
+	}
+	
 	/**
 	 * Execute a cached query for a possible tech type table item in a table with a given item key.
 	 * 
@@ -100,7 +131,7 @@ public class TechTypeUtils {
 	}
 	
 	/**
-	 * Reset all components that address the given tech type table to the table values.
+	 * Reset all diagram elements to tech type table values.
 	 * 
 	 * @param table  A tech type table
 	 * @throws DatabaseException
-- 
2.43.2