X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.db.impl%2Fsrc%2Forg%2Fsimantics%2Fdb%2Fimpl%2Fquery%2FStringQuery.java;fp=bundles%2Forg.simantics.db.impl%2Fsrc%2Forg%2Fsimantics%2Fdb%2Fimpl%2Fquery%2FStringQuery.java;h=6e786c0d201abfb98fa0b1c983dce79709d80e2d;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

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
index 000000000..6e786c0d2
--- /dev/null
+++ b/bundles/org.simantics.db.impl/src/org/simantics/db/impl/query/StringQuery.java
@@ -0,0 +1,76 @@
+/*******************************************************************************
+ * 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.impl.query;
+
+import org.simantics.db.impl.graph.ReadGraphImpl;
+import org.simantics.db.request.RequestFlags;
+
+abstract public class StringQuery<Procedure> extends CacheEntryBase implements Query {
+
+    final public String id;
+    final public int hash;
+
+    public StringQuery(String id) {
+        assert(id != null);
+    	this.id = id;
+    	hash = id.hashCode();
+    }
+    
+    @Override
+    int makeHash() {
+    	return id.hashCode();
+    }
+    
+    final protected static int hash(String id) {
+        return id.hashCode();
+    }
+    
+    @Override
+    public int type() {
+        return RequestFlags.INVALIDATE;
+    }
+    
+    @Override
+    final public boolean equals(Object object) {
+        if (this == object)
+            return true;
+        else if (object == null)
+            return false;
+        else if (getClass() != object.getClass())
+            return false;
+        StringQuery other = (StringQuery)object;
+        return id == other.id;
+    }
+    
+    @Override
+    final public Query getQuery() {
+        return this;
+    }
+    
+    @Override
+    public void recompute(ReadGraphImpl graph, Object provider, CacheEntry entry) {
+        throw new Error("Recompute of primitive queries is not supported.");
+    }
+    
+    @Override
+    public void performFromCache(ReadGraphImpl graph, Object provider, Object procedure) {
+    	throw new Error("Not possible.");
+    }
+    
+    abstract public void recompute(ReadGraphImpl graph, QueryProcessor provider);
+    abstract public void computeForEach(ReadGraphImpl graph, QueryProcessor provider, Procedure procedure);
+    abstract public void performFromCache(ReadGraphImpl graph, QueryProcessor provider, Procedure procedure);
+    abstract public void putEntry(QueryProcessor provider);
+    abstract public void removeEntry(QueryProcessor provider);
+    abstract public StringQuery<Procedure> getEntry(QueryProcessor provider);
+	
+}