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>> implements 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 InternalProcedure<Integer> procedure = entry != null ? entry : procedure_;
43 if("http://".equals(id) || "http:/".equals(id)) {
45 QueryProcessor processor = graph.processor;
46 procedure.execute(graph, processor.getRootLibrary());
50 final String[] parts = URIStringUtils.splitURI(id);
53 QueryCache.runnerURIToResource(graph, parts[0], entry, null, new InternalProcedure<Integer>() {
56 public void execute(ReadGraphImpl graph, Integer parentId) throws DatabaseException {
58 ObjectResourceIdMap<String> map = QueryCache.resultChildMap(graph, parentId, entry, null);
60 int result = map.getId(URIStringUtils.unescape(parts[1]));
62 ResourceNotFoundException e = new ResourceNotFoundException("No resource for URI: " + id);
63 procedure.exception(graph, e);
65 procedure.execute(graph, result);
70 public void exception(ReadGraphImpl graph, Throwable throwable) throws DatabaseException {
71 procedure.exception(graph, throwable);
78 ResourceNotFoundException e = new ResourceNotFoundException("No resource for URI: " + id);
79 procedure.exception(graph, e);
84 if(entry != null) entry.performFromCache(graph, procedure_);
88 public void addOrSet(Integer result) {
100 public String toString() {
101 return "URIToResource[" + id + "]";
105 public Object performFromCache(ReadGraphImpl graph, InternalProcedure<Integer> procedure) throws DatabaseException {
109 if(handleException(graph, procedure)) return (Throwable)getResult();
111 Integer result = (Integer)getResult();
112 procedure.execute(graph, result);
118 public void recompute(ReadGraphImpl graph) throws DatabaseException {
120 compute(graph, new InternalProcedure<Integer>() {
123 public void execute(ReadGraphImpl graph, Integer result) {
127 public void exception(ReadGraphImpl graph, Throwable t) {
128 if(DebugException.DEBUG) new DebugException(t).printStackTrace();
129 throw new Error("Error in recompute.", t);
137 public void execute(ReadGraphImpl graph, Integer result) throws DatabaseException {
145 public void exception(ReadGraphImpl graph, Throwable throwable) throws DatabaseException {