1 /*******************************************************************************
\r
2 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
\r
3 * in Industry THTH ry.
\r
4 * All rights reserved. This program and the accompanying materials
\r
5 * are made available under the terms of the Eclipse Public License v1.0
\r
6 * which accompanies this distribution, and is available at
\r
7 * http://www.eclipse.org/legal/epl-v10.html
\r
10 * VTT Technical Research Centre of Finland - initial API and implementation
\r
11 *******************************************************************************/
\r
12 package org.simantics.db.impl.query;
\r
14 import org.simantics.db.exception.DatabaseException;
\r
15 import org.simantics.db.impl.graph.ReadGraphImpl;
\r
16 import org.simantics.db.request.RequestFlags;
\r
18 abstract public class UnaryQuery<Procedure> extends CacheEntryBase implements Query {
\r
20 final public int id;
\r
22 public UnaryQuery(int r) {
\r
34 return RequestFlags.INVALIDATE;
\r
38 final public boolean equals(Object object) {
\r
41 else if (object == null)
\r
43 else if (getClass() != object.getClass())
\r
45 UnaryQuery<?> other = (UnaryQuery<?>)object;
\r
46 return id == other.id;
\r
50 final public Query getQuery() {
\r
51 assert(!isDiscarded());
\r
56 public void recompute(ReadGraphImpl graph, Object provider, CacheEntry entry) {
\r
57 recompute(graph, (QueryProcessor)provider);
\r
61 public void performFromCache(ReadGraphImpl graph, Object provider, Object procedure) {
\r
62 performFromCache(graph, (QueryProcessor)provider, (Procedure)procedure);
\r
65 abstract public void recompute(ReadGraphImpl graph, QueryProcessor provider);
\r
66 abstract public Object computeForEach(ReadGraphImpl graph, QueryProcessor provider, Procedure procedure, boolean store);
\r
67 abstract public Object performFromCache(ReadGraphImpl graph, QueryProcessor provider, Procedure procedure);
\r
68 abstract public void putEntry(QueryProcessor provider);
\r
69 abstract public void removeEntry(QueryProcessor provider);
\r
70 abstract public UnaryQuery<Procedure> getEntry(QueryProcessor provider);
\r
72 public Object get(ReadGraphImpl graph, QueryProcessor processor, Object procedure) throws Throwable {
\r
73 if(procedure != null) {
\r
74 performFromCache(graph, processor, procedure);
\r
82 boolean isImmutable(ReadGraphImpl graph) throws DatabaseException {
\r
83 return graph.processor.isImmutable(id);
\r