Migrated source code from Simantics SVN

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

diff --git a/bundles/org.simantics.db.impl/src/org/simantics/db/impl/query/StringQuery.java b/bundles/org.simantics.db.impl/src/org/simantics/db/impl/query/StringQuery.java
new file mode 100644 (file)
index 0000000..6e786c0
--- /dev/null
+++ b/bundles/org.simantics.db.impl/src/org/simantics/db/impl/query/StringQuery.java
@@ -0,0 +1,76 @@
+/*******************************************************************************\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
+abstract public class StringQuery<Procedure> extends CacheEntryBase implements Query {\r
+\r
+    final public String id;\r
+    final public int hash;\r
+\r
+    public StringQuery(String id) {\r
+        assert(id != null);\r
+       this.id = id;\r
+       hash = id.hashCode();\r
+    }\r
+    \r
+    @Override\r
+    int makeHash() {\r
+       return id.hashCode();\r
+    }\r
+    \r
+    final protected static int hash(String id) {\r
+        return id.hashCode();\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
+        StringQuery other = (StringQuery)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
+        throw new Error("Recompute of primitive queries is not supported.");\r
+    }\r
+    \r
+    @Override\r
+    public void performFromCache(ReadGraphImpl graph, Object provider, Object procedure) {\r
+       throw new Error("Not possible.");\r
+    }\r
+    \r
+    abstract public void recompute(ReadGraphImpl graph, QueryProcessor provider);\r
+    abstract public void computeForEach(ReadGraphImpl graph, QueryProcessor provider, Procedure procedure);\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 StringQuery<Procedure> getEntry(QueryProcessor provider);\r
+       \r
+}\r