Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.db.common / src / org / simantics / db / common / request / ResourceRead2.java

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 (file)
index 0000000..a5a8167
--- /dev/null
+++ b/bundles/org.simantics.db.common/src/org/simantics/db/common/request/ResourceRead2.java
@@ -0,0 +1,58 @@
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
+ * in Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ *     VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.db.common.request;\r
+\r
+import org.simantics.db.ReadGraph;\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.exception.DatabaseException;\r
+\r
+abstract public class ResourceRead2<T> extends ResourceReadBase<T> {\r
+\r
+       final protected Resource resource;\r
+       final protected Resource resource2;\r
+\r
+    @Override\r
+    public int hashCode() {\r
+        return resource.hashCode() + 31 * resource2.hashCode();\r
+    }\r
+\r
+    @Override\r
+    public boolean equals(Object object) {\r
+        if (this == object)\r
+            return true;\r
+        else if (object == null)\r
+            return false;\r
+        else if (getClass() != object.getClass())\r
+            return false;\r
+        ResourceRead2<?> r = (ResourceRead2<?>)object;\r
+        return resource.equals(r.resource) && resource2.equals(r.resource2);\r
+    }\r
+\r
+    public ResourceRead2(Resource resource, Resource resource2) {\r
+       if(resource == null) throw new IllegalArgumentException("Null resource.");\r
+       if(resource2 == null) throw new IllegalArgumentException("Null resource2.");\r
+        this.resource = resource;\r
+        this.resource2 = resource2;\r
+    }\r
+    \r
+    @Override\r
+    public boolean isImmutable(ReadGraph graph) throws DatabaseException {\r
+       return graph.isImmutable(resource) && graph.isImmutable(resource2);\r
+    }\r
+\r
+    \r
+    @Override\r
+    public String toString() {\r
+       return getClass().getSimpleName() + "|" + resource + "|" + resource2; \r
+    }\r
+    \r
+}\r