From 293ccfa5eb545cf7c541703a5747d85da662ec27 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Hannu=20Niemist=C3=B6?= <hannu.niemisto@semantum.fi>
Date: Mon, 14 Aug 2017 14:46:28 +0300
Subject: [PATCH] (refs #7428) Added predicatesOf function to Simantics/DB

Change-Id: I77e4962373d9fbea81fab37fd5b59ee434133eb3
---
 .../src/org/simantics/db/impl/query/IntSet.java     | 13 ++++++++++++-
 bundles/org.simantics.scl.db/scl/Simantics/DB.scl   |  5 ++++-
 2 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/bundles/org.simantics.db.impl/src/org/simantics/db/impl/query/IntSet.java b/bundles/org.simantics.db.impl/src/org/simantics/db/impl/query/IntSet.java
index a84f8fc55..7c32b8e59 100644
--- a/bundles/org.simantics.db.impl/src/org/simantics/db/impl/query/IntSet.java
+++ b/bundles/org.simantics.db.impl/src/org/simantics/db/impl/query/IntSet.java
@@ -37,6 +37,8 @@ final public class IntSet implements ResourceSet {
     protected static final int DEFAULT_CAPACITY = 3;
 
     public static final int NO_DATA = -1;
+    
+    private static final Object[] EMPTY_ARRAY = new Object[0];
 
     public IntSet() {
         support = null;
@@ -241,7 +243,16 @@ final public class IntSet implements ResourceSet {
 
     @Override
     public Object[] toArray() {
-        throw new UnsupportedOperationException();
+        if(data != null) {
+            Object[] result = new Object[sizeOrData];
+            for(int i=0;i<sizeOrData;++i)
+                result[i] = new ResourceImpl(support, data[i]);
+            return result;
+        }
+        else if(sizeOrData == NO_DATA)
+            return EMPTY_ARRAY;
+        else
+            return new Object[] { new ResourceImpl(support, sizeOrData) };
     }
 
     @Override
diff --git a/bundles/org.simantics.scl.db/scl/Simantics/DB.scl b/bundles/org.simantics.scl.db/scl/Simantics/DB.scl
index 32019768b..30608067d 100644
--- a/bundles/org.simantics.scl.db/scl/Simantics/DB.scl
+++ b/bundles/org.simantics.scl.db/scl/Simantics/DB.scl
@@ -140,6 +140,9 @@ importJava "org.simantics.db.ReadGraph" where
     isInheritedFrom :: Resource -> Resource -> <ReadGraph> Boolean
     
     getRootLibrary :: () -> <ReadGraph> Resource
+    
+    @JavaName getPredicates
+    predicatesOf :: Resource -> <ReadGraph> [Resource]
 
 importJava "org.simantics.db.layer0.util.ExtendedUris" where
     "Converts an absolute URI to a resource"
@@ -477,4 +480,4 @@ possibleChildWithPath parent path =
               Just c -> possibleChild c name
               Nothing -> Nothing 
           ) 
-          (Just parent) path
+          (Just parent) path
\ No newline at end of file
-- 
2.43.2