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.common.exception.DebugException;
16 import org.simantics.db.exception.DatabaseException;
17 import org.simantics.db.impl.graph.ReadGraphImpl;
18 import org.simantics.db.impl.procedure.InternalProcedure;
19 import org.simantics.db.procedure.ListenerBase;
21 import gnu.trove.map.hash.TObjectIntHashMap;
23 public class URIToResource extends StringQuery<InternalProcedure<Integer>> {
25 URIToResource(final String id) {
30 final public void removeEntry(QueryProcessor provider) {
31 provider.cache.remove(this);
34 private static void lookup(ReadGraphImpl graph, final URIToResource entry, final InternalProcedure<Integer> procedure, final String namespace, final String name) throws DatabaseException {
36 QueryCache.runnerNamespaceIndex(graph, namespace, entry, null, new InternalProcedure<TObjectIntHashMap<String>>() {
39 public void execute(ReadGraphImpl graph, TObjectIntHashMap<String> index) throws DatabaseException {
42 int result = index.get(name);
44 if(entry != null) entry.addOrSet(graph, graph.processor, result);
45 procedure.execute(graph, result);
51 if(entry != null) entry.addOrSet(graph, graph.processor, zero);
52 procedure.execute(graph, zero);
57 public void exception(ReadGraphImpl graph, Throwable t) throws DatabaseException {
58 if(entry != null) entry.except(t);
59 procedure.exception(graph, t);
67 public Object compute(ReadGraphImpl graph, final InternalProcedure<Integer> procedure) throws DatabaseException {
68 computeForEach(graph, id, this, procedure);
72 static void computeForEach(ReadGraphImpl graph, String id, final URIToResource entry, final InternalProcedure<Integer> procedure) throws DatabaseException {
74 if("http://".equals(id) || "http:/".equals(id)) {
76 QueryProcessor processor = graph.processor;
77 if(entry != null) entry.addOrSet(graph, processor, processor.getRootLibrary());
78 procedure.execute(graph, processor.getRootLibrary());
82 final String[] parts = URIStringUtils.splitURI(id);
84 lookup(graph, entry, procedure, parts[0], parts[1]);
86 lookup(graph, entry, procedure, "http://", id.replaceFirst("http://", ""));
93 public void addOrSet(ReadGraphImpl graph, QueryProcessor provider, Integer result) {
105 public String toString() {
106 return "URIToResource[" + id + "]";
110 public Object performFromCache(ReadGraphImpl graph, InternalProcedure<Integer> procedure) throws DatabaseException {
114 if(handleException(graph, procedure)) return (Throwable)statusOrException;
116 Integer result = (Integer)getResult();
117 procedure.execute(graph, result);
123 public void recompute(ReadGraphImpl graph) throws DatabaseException {
125 compute(graph, new InternalProcedure<Integer>() {
128 public void execute(ReadGraphImpl graph, Integer result) {
132 public void exception(ReadGraphImpl graph, Throwable t) {
133 if(DebugException.DEBUG) new DebugException(t).printStackTrace();
134 throw new Error("Error in recompute.", t);