-/*******************************************************************************\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.browsing.ui.graph.impl;\r
-\r
-import org.simantics.browsing.ui.NodeContext;\r
-import org.simantics.browsing.ui.PrimitiveQueryUpdater;\r
-import org.simantics.browsing.ui.NodeContext.PrimitiveQueryKey;\r
-import org.simantics.browsing.ui.common.processors.AbstractPrimitiveQueryProcessor;\r
-import org.simantics.db.ReadGraph;\r
-import org.simantics.db.exception.DatabaseException;\r
-import org.simantics.utils.Container;\r
-\r
-public abstract class LazyGraphQueryProcessor<Result> extends AbstractPrimitiveQueryProcessor<Container<Result>> {\r
-\r
- /**\r
- * Returns the value to be returned as the initial query result, before the\r
- * real result has been calculated.\r
- * \r
- * @return the initial result value stored in the returned {@link Container}\r
- */\r
- protected abstract Result initial();\r
-\r
- /**\r
- * \r
- * @param graph\r
- * @param context\r
- * @return\r
- */\r
- protected abstract Result compute(ReadGraph graph, NodeContext context, PrimitiveQueryKey<Container<Result>> key) throws DatabaseException;\r
-\r
- final Result init = initial();\r
-\r
- @Override\r
- public Container<Result> query(PrimitiveQueryUpdater updater, NodeContext context,\r
- final PrimitiveQueryKey<Container<Result>> key) {\r
- assert(updater != null);\r
- assert(context != null);\r
- assert(key != null);\r
-\r
- return new LazyResourceQueryContainer<Result>(updater, context, init) {\r
- @Override\r
- protected PrimitiveQueryKey<Container<Result>> getKey() {\r
- return key;\r
- }\r
-\r
- @Override\r
- protected Result compute(ReadGraph graph) throws DatabaseException {\r
- return LazyGraphQueryProcessor.this.compute(graph, context, key);\r
- }\r
- };\r
- }\r
-\r
- @Override\r
- public String toString() {\r
- return "abstract LazyGraphQueryProcessor2";\r
- }\r
-\r
-}\r
+/*******************************************************************************
+ * 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.browsing.ui.graph.impl;
+
+import org.simantics.browsing.ui.NodeContext;
+import org.simantics.browsing.ui.PrimitiveQueryUpdater;
+import org.simantics.browsing.ui.NodeContext.PrimitiveQueryKey;
+import org.simantics.browsing.ui.common.processors.AbstractPrimitiveQueryProcessor;
+import org.simantics.db.ReadGraph;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.utils.Container;
+
+public abstract class LazyGraphQueryProcessor<Result> extends AbstractPrimitiveQueryProcessor<Container<Result>> {
+
+ /**
+ * Returns the value to be returned as the initial query result, before the
+ * real result has been calculated.
+ *
+ * @return the initial result value stored in the returned {@link Container}
+ */
+ protected abstract Result initial();
+
+ /**
+ *
+ * @param graph
+ * @param context
+ * @return
+ */
+ protected abstract Result compute(ReadGraph graph, NodeContext context, PrimitiveQueryKey<Container<Result>> key) throws DatabaseException;
+
+ final Result init = initial();
+
+ @Override
+ public Container<Result> query(PrimitiveQueryUpdater updater, NodeContext context,
+ final PrimitiveQueryKey<Container<Result>> key) {
+ assert(updater != null);
+ assert(context != null);
+ assert(key != null);
+
+ return new LazyResourceQueryContainer<Result>(updater, context, init) {
+ @Override
+ protected PrimitiveQueryKey<Container<Result>> getKey() {
+ return key;
+ }
+
+ @Override
+ protected Result compute(ReadGraph graph) throws DatabaseException {
+ return LazyGraphQueryProcessor.this.compute(graph, context, key);
+ }
+ };
+ }
+
+ @Override
+ public String toString() {
+ return "abstract LazyGraphQueryProcessor2";
+ }
+
+}