X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.modeling%2Fsrc%2Forg%2Fsimantics%2Fmodeling%2Fsubscription%2FSubscriptionItemsQuery.java;fp=bundles%2Forg.simantics.modeling%2Fsrc%2Forg%2Fsimantics%2Fmodeling%2Fsubscription%2FSubscriptionItemsQuery.java;h=70d0a7c8ca939512d9bd77d2fd6f4eacfa7d1b36;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

diff --git a/bundles/org.simantics.modeling/src/org/simantics/modeling/subscription/SubscriptionItemsQuery.java b/bundles/org.simantics.modeling/src/org/simantics/modeling/subscription/SubscriptionItemsQuery.java
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+/*******************************************************************************
+ * Copyright (c) 2007, 2011 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.modeling.subscription;
+
+import java.util.Collection;
+import java.util.HashSet;
+import java.util.Set;
+
+import org.simantics.db.ReadGraph;
+import org.simantics.db.Resource;
+import org.simantics.db.common.request.UniqueRead;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.layer0.Layer0;
+import org.simantics.modeling.ModelingResources;
+
+
+/**
+ * This query returns all subscription items for a collection of subscriptions. 
+ */
+public class SubscriptionItemsQuery extends UniqueRead<Set<Resource>> {
+
+	Collection<Resource> resources;
+	
+    public SubscriptionItemsQuery(Collection<Resource> resources) {
+        super();
+        this.resources = resources;
+    }
+
+    @Override
+    public Set<Resource> perform(ReadGraph graph) throws DatabaseException {
+        
+    	Set<Resource> result = new HashSet<Resource>();
+    	ModelingResources MOD = ModelingResources.getInstance(graph);
+    	Layer0 L0 = Layer0.getInstance(graph);
+    			
+    	for (Resource r : resources) {
+    		if ( graph.isInstanceOf(r, MOD.Subscription_Item)) result.add(r);
+    		else if ( graph.isInstanceOf(r, MOD.Subscription)) {
+    			for (Resource rr : graph.getObjects(r, L0.ConsistsOf)) {
+    	    		if ( graph.isInstanceOf(rr, MOD.Subscription_Item)) result.add(rr);    				
+    			}
+    		}
+    	}
+    	
+    	return result;
+        
+    }
+}