X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;ds=sidebyside;f=bundles%2Forg.simantics.db.common%2Fsrc%2Forg%2Fsimantics%2Fdb%2Fcommon%2Frequest%2FResourceRead2.java;fp=bundles%2Forg.simantics.db.common%2Fsrc%2Forg%2Fsimantics%2Fdb%2Fcommon%2Frequest%2FResourceRead2.java;h=a5a8167e22149f4f29f754795a118e6e34eb55b8;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

diff --git a/bundles/org.simantics.db.common/src/org/simantics/db/common/request/ResourceRead2.java b/bundles/org.simantics.db.common/src/org/simantics/db/common/request/ResourceRead2.java
new file mode 100644
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+++ b/bundles/org.simantics.db.common/src/org/simantics/db/common/request/ResourceRead2.java
@@ -0,0 +1,58 @@
+/*******************************************************************************
+ * Copyright (c) 2007, 2010 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.db.common.request;
+
+import org.simantics.db.ReadGraph;
+import org.simantics.db.Resource;
+import org.simantics.db.exception.DatabaseException;
+
+abstract public class ResourceRead2<T> extends ResourceReadBase<T> {
+
+	final protected Resource resource;
+	final protected Resource resource2;
+
+    @Override
+    public int hashCode() {
+        return resource.hashCode() + 31 * resource2.hashCode();
+    }
+
+    @Override
+    public boolean equals(Object object) {
+        if (this == object)
+            return true;
+        else if (object == null)
+            return false;
+        else if (getClass() != object.getClass())
+            return false;
+        ResourceRead2<?> r = (ResourceRead2<?>)object;
+        return resource.equals(r.resource) && resource2.equals(r.resource2);
+    }
+
+    public ResourceRead2(Resource resource, Resource resource2) {
+    	if(resource == null) throw new IllegalArgumentException("Null resource.");
+    	if(resource2 == null) throw new IllegalArgumentException("Null resource2.");
+        this.resource = resource;
+        this.resource2 = resource2;
+    }
+    
+    @Override
+    public boolean isImmutable(ReadGraph graph) throws DatabaseException {
+    	return graph.isImmutable(resource) && graph.isImmutable(resource2);
+    }
+
+    
+    @Override
+    public String toString() {
+    	return getClass().getSimpleName() + "|" + resource + "|" + resource2; 
+    }
+    
+}