1 /*******************************************************************************
2 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
4 * All rights reserved. This program and the accompanying materials
5 * are made available under the terms of the Eclipse Public License v1.0
6 * which accompanies this distribution, and is available at
7 * http://www.eclipse.org/legal/epl-v10.html
10 * VTT Technical Research Centre of Finland - initial API and implementation
11 *******************************************************************************/
12 package org.simantics.db.impl.query;
14 import org.simantics.databoard.util.URIStringUtils;
15 import org.simantics.db.ObjectResourceIdMap;
16 import org.simantics.db.common.exception.DebugException;
17 import org.simantics.db.exception.DatabaseException;
18 import org.simantics.db.exception.ResourceNotFoundException;
19 import org.simantics.db.impl.graph.ReadGraphImpl;
20 import org.simantics.db.impl.procedure.InternalProcedure;
22 public class URIToResource extends StringQuery<InternalProcedure<Integer>> {
24 URIToResource(final String id) {
29 final public void removeEntry(QueryProcessor provider) {
30 provider.cache.remove(this);
34 public Object compute(ReadGraphImpl graph, final InternalProcedure<Integer> procedure) throws DatabaseException {
35 computeForEach(graph, id, this, procedure);
39 static void computeForEach(ReadGraphImpl graph, String id, final URIToResource entry, final InternalProcedure<Integer> procedure) throws DatabaseException {
41 if("http://".equals(id) || "http:/".equals(id)) {
43 QueryProcessor processor = graph.processor;
44 if(entry != null) entry.addOrSet(graph, processor, processor.getRootLibrary());
45 procedure.execute(graph, processor.getRootLibrary());
49 final String[] parts = URIStringUtils.splitURI(id);
52 Integer parentId = QueryCache.resultURIToResource(graph, parts[0], entry, null);
53 ObjectResourceIdMap<String> map = QueryCache.resultChildMap(graph, parentId, entry, null);
55 procedure.execute(graph, 0);
56 if(entry != null) entry.addOrSet(graph, graph.processor, 0);
58 int result = map.getId(URIStringUtils.unescape(parts[1]));
59 if(entry != null) entry.addOrSet(graph, graph.processor, result);
60 procedure.execute(graph, result);
65 ResourceNotFoundException e = new ResourceNotFoundException("No resource for URI: " + id);
66 if(entry != null) entry.except(e);
67 procedure.exception(graph, e);
75 public void addOrSet(ReadGraphImpl graph, QueryProcessor provider, Integer result) {
87 public String toString() {
88 return "URIToResource[" + id + "]";
92 public Object performFromCache(ReadGraphImpl graph, InternalProcedure<Integer> procedure) throws DatabaseException {
96 if(handleException(graph, procedure)) return (Throwable)statusOrException;
98 Integer result = (Integer)getResult();
99 procedure.execute(graph, result);
105 public void recompute(ReadGraphImpl graph) throws DatabaseException {
107 compute(graph, new InternalProcedure<Integer>() {
110 public void execute(ReadGraphImpl graph, Integer result) {
114 public void exception(ReadGraphImpl graph, Throwable t) {
115 if(DebugException.DEBUG) new DebugException(t).printStackTrace();
116 throw new Error("Error in recompute.", t);