Merge "Multiple reader thread support for db client"

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

diff --git a/bundles/org.simantics.db.impl/src/org/simantics/db/impl/query/CacheEntry.java b/bundles/org.simantics.db.impl/src/org/simantics/db/impl/query/CacheEntry.java
index cb80a6e641cecd3b5e3e1bc14e8c2fe793c36d12..8489256225da47bfa52c2aa29940ffbba386e24b 100644 (file)
--- a/bundles/org.simantics.db.impl/src/org/simantics/db/impl/query/CacheEntry.java
+++ b/bundles/org.simantics.db.impl/src/org/simantics/db/impl/query/CacheEntry.java
@@ -1,66 +1,67 @@
-/*******************************************************************************\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.exception.DatabaseException;\r
-import org.simantics.db.impl.graph.ReadGraphImpl;\r
-\r
-\r
-\r
-public abstract class CacheEntry {\r
-       \r
-    final public static int HAS_BEEN_BOUND = 1;\r
-\r
-    abstract boolean isFresh();\r
-    abstract boolean isReady();\r
-    abstract boolean isRefuted();\r
-    abstract boolean isPending();\r
-    abstract boolean isDiscarded();\r
-    abstract boolean isExcepted();\r
-\r
-    abstract void setReady();\r
-    abstract void refute();\r
-    abstract void setPending();\r
-    abstract void discard();\r
-    abstract void except(Throwable t);\r
-    abstract void setResult(Object result);\r
-    abstract void clearResult(QuerySupport support);\r
-\r
-    abstract void prepareRecompute(QuerySupport querySupport);\r
-    \r
-    abstract public Object getOriginalRequest();\r
-    abstract Query getQuery();\r
-    abstract <T> T getResult();\r
-\r
-    abstract CacheEntry pruneFirstParents();\r
-    abstract void removeParent(CacheEntry entry);\r
-    abstract void addParent(CacheEntry entry);\r
-    abstract boolean hasParents();\r
-    abstract Iterable<CacheEntry> getParents(QueryProcessor processor);\r
-    abstract CacheEntry getFirstParent(QueryProcessor processor);\r
-    abstract boolean moreThanOneParent(QueryProcessor processor);\r
-    abstract int parentCount(QueryProcessor processor);\r
-    \r
-    abstract void performFromCache(ReadGraphImpl graph, Object provider, Object procedure);\r
-    \r
-    abstract boolean isImmutable(ReadGraphImpl graph) throws DatabaseException;\r
-    \r
-    abstract boolean shouldBeCollected();\r
-    \r
-    abstract short getLevel();\r
-    abstract short setLevel(short level);\r
-    \r
-    abstract int getGCStatus();\r
-    abstract int setGCStatus(int status);\r
-    abstract void setGCStatusFlag(int flag, boolean value);\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.db.impl.query;
+
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.db.impl.graph.ReadGraphImpl;
+
+
+
+public abstract class CacheEntry<Procedure> {
+       
+    final public static int HAS_BEEN_BOUND = 1;
+
+    abstract boolean isFresh();
+    abstract boolean isReady();
+    abstract boolean isRefuted();
+    abstract boolean isPending();
+    abstract boolean isDiscarded();
+    abstract boolean isExcepted();
+
+    abstract void setReady();
+    abstract void refute();
+    abstract void setPending();
+    abstract void discard();
+    abstract void except(Throwable t);
+    abstract void clearResult(QuerySupport support);
+
+    abstract void prepareRecompute(QuerySupport querySupport);
+    
+    abstract public Object getOriginalRequest();
+    abstract Query getQuery();
+
+    abstract CacheEntry pruneFirstParents();
+    abstract void removeParent(CacheEntry entry);
+    abstract void addParent(CacheEntry entry);
+    abstract boolean hasParents();
+    abstract Iterable<CacheEntry<?>> getParents(QueryProcessor processor);
+    abstract CacheEntry getFirstParent(QueryProcessor processor);
+    abstract boolean moreThanOneParent(QueryProcessor processor);
+    abstract int parentCount(QueryProcessor processor);
+    
+    abstract <T> T getResult();
+    abstract void setResult(Object result);
+    
+    abstract Object performFromCache(ReadGraphImpl graph, Procedure procedure) throws DatabaseException;
+    
+    abstract boolean isImmutable(ReadGraphImpl graph) throws DatabaseException;
+    
+    abstract boolean shouldBeCollected();
+    
+    abstract short getLevel();
+    abstract short setLevel(short level);
+    
+    abstract int getGCStatus();
+    abstract int setGCStatus(int status);
+    abstract void setGCStatusFlag(int flag, boolean value);
+
+}