Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.db.impl / src / org / simantics / db / impl / query / BinaryQuery.java

diff --git a/bundles/org.simantics.db.impl/src/org/simantics/db/impl/query/BinaryQuery.java b/bundles/org.simantics.db.impl/src/org/simantics/db/impl/query/BinaryQuery.java
new file mode 100644 (file)
index 0000000..710895c
--- /dev/null
+++ b/bundles/org.simantics.db.impl/src/org/simantics/db/impl/query/BinaryQuery.java
@@ -0,0 +1,86 @@
+/*******************************************************************************\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.impl.query;\r
+\r
+import org.simantics.db.impl.graph.ReadGraphImpl;\r
+import org.simantics.db.request.RequestFlags;\r
+\r
+\r
+abstract public class BinaryQuery<Procedure> extends CacheEntryBase implements Query {\r
+\r
+       final public long id;\r
+\r
+       public BinaryQuery(final long r1, final long r2) {\r
+        assert(r1 != 0);\r
+        assert(r2 != 0);\r
+        id = id(r1,r2);\r
+        assert(id != 0);\r
+    }\r
+       \r
+       @Override\r
+       int makeHash() {\r
+               return r1() ^ r2();\r
+       }\r
+       \r
+    final public int r1() {\r
+        return (int)(id>>>32);\r
+    }\r
+    \r
+    final public int r2() {\r
+        return (int)id;\r
+    }\r
+    \r
+    final protected static long id(long r1, long r2) {\r
+        long result = (r1<<32) | (r2 & 0xffffffffL); \r
+        return result;\r
+    }\r
+    \r
+    @Override\r
+    public int type() {\r
+        return RequestFlags.INVALIDATE;\r
+    }\r
+    \r
+       @Override\r
+    final 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
+        BinaryQuery<?> other = (BinaryQuery<?>)object;\r
+        return id == other.id;\r
+    }\r
+       \r
+    @Override\r
+    final public Query getQuery() {\r
+        return this;\r
+    }\r
+    \r
+    @Override\r
+    public void recompute(ReadGraphImpl graph, Object provider, CacheEntry entry) {\r
+        recompute(graph, (QueryProcessor)provider);\r
+    }\r
+    \r
+    @Override\r
+    public void performFromCache(ReadGraphImpl graph, Object provider, Object procedure) {\r
+        performFromCache(graph, (QueryProcessor)provider, (Procedure)procedure);\r
+    }\r
+\r
+    abstract public void recompute(ReadGraphImpl graph, QueryProcessor provider);\r
+    abstract public void computeForEach(ReadGraphImpl graph, QueryProcessor provider, Procedure procedure, boolean store);\r
+    abstract public void performFromCache(ReadGraphImpl graph, QueryProcessor provider, Procedure procedure);\r
+    abstract public void putEntry(QueryProcessor provider);\r
+    abstract public void removeEntry(QueryProcessor provider);\r
+    abstract public BinaryQuery<Procedure> getEntry(QueryProcessor provider);\r
+\r
+}\r