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[tinyTiM-commits] SF.net SVN: tinytim: [54] tinytim-cxtm/trunk/src/main/java
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From: <lh...@us...> - 2008-05-05 14:54:27
|
Revision: 54
http://tinytim.svn.sourceforge.net/tinytim/?rev=54&view=rev
Author: lheuer
Date: 2008-05-05 07:53:21 -0700 (Mon, 05 May 2008)
Log Message:
-----------
- Initial CXTM import
Added Paths:
-----------
tinytim-cxtm/trunk/src/main/java/org/
tinytim-cxtm/trunk/src/main/java/org/tinytim/
tinytim-cxtm/trunk/src/main/java/org/tinytim/cxtm/
tinytim-cxtm/trunk/src/main/java/org/tinytim/cxtm/CXTMWriter.java
tinytim-cxtm/trunk/src/main/java/org/tinytim/cxtm/Canonicalizer.java
Added: tinytim-cxtm/trunk/src/main/java/org/tinytim/cxtm/CXTMWriter.java
===================================================================
--- tinytim-cxtm/trunk/src/main/java/org/tinytim/cxtm/CXTMWriter.java (rev 0)
+++ tinytim-cxtm/trunk/src/main/java/org/tinytim/cxtm/CXTMWriter.java 2008-05-05 14:53:21 UTC (rev 54)
@@ -0,0 +1,207 @@
+/*
+ * This is tinyTiM, a tiny Topic Maps engine.
+ *
+ * Copyright (C) 2008 Lars Heuer (heuer[at]semagia.com)
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+package org.tinytim.cxtm;
+
+import java.io.IOException;
+import java.io.OutputStream;
+import java.io.OutputStreamWriter;
+import java.util.Arrays;
+
+import org.xml.sax.Attributes;
+import org.xml.sax.helpers.AttributesImpl;
+
+/**
+ * Simple SAX-alike XML writer that respects canonical XML to some extend.
+ *
+ * This class is not meant to be a generic XML-C14N writer, but it should be
+ * good enough to support CXTM.
+ *
+ * @author Lars Heuer (heuer[at]semagia.com) <a href="http://www.semagia.com/">Semagia</a>
+ * @version $Rev:$ - $Date:$
+ */
+final class CXTMWriter {
+
+ public static final Attributes EMPTY_ATTRS = new AttributesImpl();
+
+ private static final char _NL = '\n';
+
+ private OutputStreamWriter _out;
+
+ public CXTMWriter(OutputStream out) throws IOException {
+ _out = new OutputStreamWriter(out, "UTF-8");
+ }
+
+ /**
+ * Indicates the start of the serialization process.
+ *
+ * @throws IOException If an error occurs.
+ */
+ public void startDocument() throws IOException {
+ // noop
+ }
+
+ /**
+ * Indicates the end of the serialization process.
+ *
+ * @throws IOException If an error occurs.
+ */
+ public void endDocument() throws IOException {
+ _out.flush();
+ }
+
+ /**
+ * Indicates the start of an element with the specified local name.
+ *
+ * @see #startElement(String, Attributes).
+ *
+ * @param localName The element's name.
+ * @throws IOException If an error occurs.
+ */
+ public void startElement(String localName) throws IOException {
+ startElement(localName, EMPTY_ATTRS);
+ }
+
+ /**
+ * Indicates the start of an element with the provided local name.
+ *
+ * The attributes written in canonical XML.
+ *
+ * @param localName The name of the element.
+ * @param attrs The element's attributes.
+ * @throws IOException If an error occurs.
+ */
+ public void startElement(String localName, Attributes attrs) throws IOException {
+ String[] names = new String[attrs.getLength()];
+ for (int i=0; i < names.length; i++) {
+ names[i] = attrs.getLocalName(i);
+ }
+ Arrays.sort(names);
+ _out.write('<');
+ _out.write(localName);
+ for (int i=0; i < names.length; i++) {
+ _out.write(' ');
+ _out.write(names[i]);
+ _out.write("=\"");
+ _out.write(_escapeAttributeValue(attrs.getValue("", names[i])));
+ _out.write('"');
+ }
+ _out.write('>');
+ }
+
+ /**
+ * Indicates the end of an elemnt.
+ *
+ * @param localName The element's name.
+ * @throws IOException If an error occurs.
+ */
+ public void endElement(String localName) throws IOException {
+ _out.write("</");
+ _out.write(localName);
+ _out.write('>');
+ }
+
+ /**
+ * Writes a <tt>#x0A</tt> to the output.
+ *
+ * @throws IOException If an error occurs.
+ */
+ public void newline() throws IOException {
+ _out.write(_NL);
+ }
+
+ /**
+ * Writes the specified characters to the output.
+ *
+ * The data is written according to the rules of canonicalized XML.
+ *
+ * @param data The data to write.
+ * @throws IOException If an error occurs.
+ */
+ public void characters(String data) throws IOException {
+ _out.write(_escapeTextContent(data));
+ }
+
+ /**
+ * Escapes the data according to the canonical XML rules.
+ *
+ * @param value The value.
+ * @return The escaped value.
+ */
+ private String _escapeTextContent(String value) {
+ char[] data = value.toCharArray();
+ StringBuilder sb = new StringBuilder(data.length);
+ for (int i=0; i < data.length; i++) {
+ char c = data[i];
+ if (c == '\r') {
+ sb.append("
");
+ }
+ else if (c == '&') {
+ sb.append("&");
+ }
+ else if (c == '<') {
+ sb.append("<");
+ }
+ else if (c == '>') {
+ sb.append(">");
+ }
+ else {
+ sb.append(c);
+ }
+ }
+ return sb.toString();
+ }
+
+ /**
+ * Escapes the attribute's value according to canonical XML.
+ *
+ * @param value The value to escape.
+ * @return The escaped value.
+ */
+ private String _escapeAttributeValue(String value) {
+ char[] data = value.toCharArray();
+ StringBuilder sb = new StringBuilder(data.length);
+ for (int i=0; i<data.length; i++) {
+ char c = data[i];
+ if (c == '\t') {
+ sb.append("	");
+ }
+ else if (c == '\n') {
+ sb.append("
");
+ }
+ else if (c == '\r') {
+ sb.append("
");
+ }
+ else if (c == '\"') {
+ sb.append(""");
+ }
+ else if (c == '&') {
+ sb.append("&");
+ }
+ else if (c == '<') {
+ sb.append("<");
+ }
+ else {
+ sb.append(c);
+ }
+ }
+ return sb.toString();
+ }
+}
Property changes on: tinytim-cxtm/trunk/src/main/java/org/tinytim/cxtm/CXTMWriter.java
___________________________________________________________________
Name: svn:keywords
+ Rev Date Id
Name: svn:eol-style
+ native
Added: tinytim-cxtm/trunk/src/main/java/org/tinytim/cxtm/Canonicalizer.java
===================================================================
--- tinytim-cxtm/trunk/src/main/java/org/tinytim/cxtm/Canonicalizer.java (rev 0)
+++ tinytim-cxtm/trunk/src/main/java/org/tinytim/cxtm/Canonicalizer.java 2008-05-05 14:53:21 UTC (rev 54)
@@ -0,0 +1,1299 @@
+/*
+ * This is tinyTiM, a tiny Topic Maps engine.
+ *
+ * Copyright (C) 2008 Lars Heuer (heuer[at]semagia.com)
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+package org.tinytim.cxtm;
+
+import java.io.IOException;
+import java.io.OutputStream;
+import java.util.AbstractSet;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.Comparator;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.IdentityHashMap;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.NoSuchElementException;
+import java.util.Set;
+import java.util.logging.Logger;
+
+import org.tinytim.DuplicateRemovalUtils;
+import org.tinytim.IConstruct;
+import org.tinytim.IDatatypeAwareConstruct;
+import org.tinytim.IReifiable;
+import org.tinytim.ITyped;
+import org.tinytim.TopicImpl;
+import org.tinytim.TopicMapImpl;
+import org.tinytim.index.ITypeInstanceIndex;
+import org.tinytim.voc.TMDM;
+import org.tmapi.core.Association;
+import org.tmapi.core.AssociationRole;
+import org.tmapi.core.DuplicateSourceLocatorException;
+import org.tmapi.core.Locator;
+import org.tmapi.core.MergeException;
+import org.tmapi.core.ModelConstraintException;
+import org.tmapi.core.Occurrence;
+import org.tmapi.core.ScopedObject;
+import org.tmapi.core.TMAPIException;
+import org.tmapi.core.Topic;
+import org.tmapi.core.TopicInUseException;
+import org.tmapi.core.TopicMap;
+import org.tmapi.core.TopicMapObject;
+import org.tmapi.core.TopicName;
+import org.tmapi.core.Variant;
+
+import org.xml.sax.Attributes;
+import org.xml.sax.helpers.AttributesImpl;
+
+/**
+ * Provides serialization of topic maps into Canonical XTM (CXTM).
+ *
+ * CXTM is a format that guarantees that two equivalent Topic Maps Data Model
+ * instances [ISO/IEC 13250-2] will always produce byte-by-byte identical
+ * serializations, and that non-equivalent instances will always produce
+ * different serializations.
+ *
+ * See <a href="http://www.isotopicmaps.org/cxtm/">http://www.isotopicmaps.org/cxtm/</a>
+ * for details.
+ *
+ * <em>CAUTION</em>: This class implements a CXTM draft (2008-04-14), the output
+ * may change in the future.
+ *
+ * The canonicalizer requires that the property
+ * {@link org.tinytim.Property#XTM10_REIFICATION} is set to <tt>false</tt> and
+ * that the property {@link org.tinytim.Property#INHERIT_NAME_SCOPE} is enabled
+ * (set to <tt>true</tt>).
+ *
+ * @author Lars Heuer (heuer[at]semagia.com) <a href="http://www.semagia.com/">Semagia</a>
+ * @version $Rev:$ - $Date:$
+ */
+public final class Canonicalizer {
+
+ private static final Logger LOG = Logger.getLogger(Canonicalizer.class.getName());
+
+ private static final String _XSD_ANY_URI = "http://www.w3.org/2001/XMLSchema#anyURI";
+
+ private static final AssociationRole[] _EMPTY_ROLES = new AssociationRole[0];
+ private static final Occurrence[] _EMPTY_OCCS = new Occurrence[0];
+ private static final TopicName[] _EMPTY_NAMES = new TopicName[0];
+ private static final Variant[] _EMPTY_VARIANTS = new Variant[0];
+
+ private Topic _type;
+ private Topic _instance;
+ private Topic _typeInstance;
+
+ private CXTMWriter _out;
+ private final String _normBase;
+ private Map<TopicMapObject, Integer> _construct2Id;
+ private Map<Topic, List<AssociationRole>> _topic2Roles;
+ private Map<String, String> _locator2Norm;
+
+ private Comparator<Topic> _topicComparator;
+ private Comparator<Association> _assocComparator;
+ private Comparator<AssociationRole> _roleComparator;
+ private Comparator<Occurrence> _occComparator;
+ private Comparator<TopicName> _nameComparator;
+ private Comparator<Variant> _variantComparator;
+ private Comparator<Set<Locator>> _locSetComparator;
+ private Comparator<Locator> _locComparator;
+ private Comparator<Set<Topic>> _scopeComparator;
+
+ private Map<Topic, TopicName[]> _topic2Names;
+ private Map<Topic, Occurrence[]> _topic2Occs;
+ private Map<TopicName, Variant[]> _name2Variants;
+ private Map<Association, AssociationRole[]> _assoc2Roles;
+
+ public Canonicalizer(OutputStream out, String baseLocator) throws IOException {
+ _out = new CXTMWriter(out);
+ _normBase = _normalizeBaseLocator(baseLocator);
+ _topicComparator = new TopicComparator();
+ _assocComparator = new AssociationComparator();
+ _roleComparator = new RoleComparator();
+ _occComparator = new OccurrenceComparator();
+ _nameComparator = new NameComparator();
+ _variantComparator = new VariantComparator();
+ _locSetComparator = new LocatorSetComparator();
+ _locComparator = new LocatorComparator();
+ _scopeComparator = new ScopeComparator();
+ }
+
+ /**
+ * Serializes the specified <code>topicMap</code> into the CXTM format.
+ *
+ * <em>CAUTION</em>: This method MAY modify the topic map since duplicate
+ * Topic Maps constructs (if any) are removed in advance.
+ *
+ * The topic map's base locator
+ * ({@link org.tmapi.core.TopicMap#getBaseLocator()}) is ignored.
+ *
+ * @param topicMap The topic map to serialize.
+ * @throws IOException If an error occurs.
+ */
+ public void write(TopicMap topicMap) throws IOException {
+ DuplicateRemovalUtils.removeDuplicates(topicMap);
+ _construct2Id = new IdentityHashMap<TopicMapObject, Integer>();
+ _locator2Norm = new HashMap<String, String>();
+ _assoc2Roles = new IdentityHashMap<Association, AssociationRole[]>();
+ _topic2Roles = new IdentityHashMap<Topic, List<AssociationRole>>();
+ _topic2Occs = new IdentityHashMap<Topic, Occurrence[]>();
+ _topic2Names = new IdentityHashMap<Topic, TopicName[]>();
+ _name2Variants = new IdentityHashMap<TopicName, Variant[]>();
+ ITypeInstanceIndex typeInstanceIndex = ((TopicMapImpl) topicMap).getIndexManager().getTypeInstanceIndex();
+ if (!typeInstanceIndex.isAutoUpdated()) {
+ typeInstanceIndex.reindex();
+ }
+ Topic[] topics = _fetchTopics(topicMap, typeInstanceIndex);
+ Association[] assocs = _fetchAssociations(topicMap, typeInstanceIndex);
+ typeInstanceIndex.close();
+ _createIndex(topics, assocs);
+ _out.startDocument();
+ AttributesImpl attrs = new AttributesImpl();
+ _addReifier(attrs, (IReifiable)topicMap);
+ _out.startElement("topicMap", attrs);
+ _out.newline();
+ _writeItemIdentifiers(topicMap);
+ for (Topic topic: topics) {
+ _writeTopic(topic);
+ }
+ for (Association assoc: assocs) {
+ _writeAssociation(assoc);
+ }
+ _out.endElement("topicMap");
+ _out.newline();
+ _out.endDocument();
+ _construct2Id = null;
+ _locator2Norm = null;
+ _assoc2Roles = null;
+ _topic2Roles = null;
+ _topic2Occs = null;
+ _topic2Names = null;
+ _name2Variants = null;
+ }
+
+ /**
+ * Returns an unsorted array of topics which should be included into
+ * the output.
+ *
+ * This method may return more topics than {@link TopicMap#getTopics()}
+ * since this method creates virtual topics to model type-instance
+ * relationships properly.
+ *
+ * @param topicMap The topic map from which the topic should be serialized.
+ * @param idx A (upto date) type instance index.
+ * @return All topics which must be included into the output.
+ */
+ @SuppressWarnings("unchecked")
+ private Topic[] _fetchTopics(TopicMap topicMap, ITypeInstanceIndex idx) {
+ Collection<Topic> types = idx.getTopicTypes();
+ if (types.isEmpty()) {
+ Set<Topic> topics = topicMap.getTopics();
+ return topics.toArray(new Topic[topics.size()]);
+ }
+ else {
+ List<Topic> topics = new ArrayList<Topic>(topicMap.getTopics());
+ TopicMapImpl tm = (TopicMapImpl) topicMap;
+ _typeInstance = _getTopicBySubjectIdentifier(tm, topics, TMDM.TYPE_INSTANCE);
+ _type = _getTopicBySubjectIdentifier(tm, topics, TMDM.TYPE);
+ _instance = _getTopicBySubjectIdentifier(tm, topics, TMDM.INSTANCE);
+ return topics.toArray(new Topic[topics.size()]);
+ }
+ }
+
+ /**
+ * Returns a topic by its subject identifier. If the topic is null, a
+ * {@link TypeInstanceTopic} is created, added to the <code>topics</code>
+ * and returned.
+ *
+ * @param tm The topic map to fetch the topic from.
+ * @param topics A modifiable collection of topics.
+ * @param sid The subject identifier.
+ * @return A topic with the specified subject identifier.
+ */
+ private Topic _getTopicBySubjectIdentifier(TopicMapImpl tm, Collection<Topic> topics, Locator sid) {
+ Topic topic = tm.getTopicBySubjectIdentifier(sid);
+ if (topic == null) {
+ topic = new TypeInstanceTopic(sid);
+ topics.add(topic);
+ }
+ return topic;
+ }
+
+ /**
+ * Returns an unsorted array of associations which should be serialized.
+ *
+ * This method may return more association than {@link TopicMap#getAssociations()}
+ * since this method may create virtual associations which are used to
+ * model type-instance relationships properly.
+ *
+ * @param tm The topic map from which the associations should be serialized.
+ * @param idx A (upto date) type instance index.
+ * @return An unsorted array of associations which must be included into the output.
+ */
+ @SuppressWarnings("unchecked")
+ private Association[] _fetchAssociations(TopicMap tm, ITypeInstanceIndex idx) {
+ Collection<Topic> types = idx.getTopicTypes();
+ if (types.isEmpty()) {
+ Set<Association> assocs = tm.getAssociations();
+ return assocs.toArray(new Association[assocs.size()]);
+ }
+ else {
+ List<Association> assocs = new ArrayList<Association>(tm.getAssociations());
+ for (Topic type: types) {
+ for (Topic instance: idx.getTopics(type)) {
+ assocs.add(new TypeInstanceAssociation(type, instance));
+ }
+ }
+ return assocs.toArray(new Association[assocs.size()]);
+ }
+ }
+
+ /**
+ * Creates the index on which the canonicalizer operates.
+ *
+ * As sideeffect, the provided topic and association arrays get sorted.
+ *
+ * @param topics An array of topics.
+ * @param assocs An array of associations.
+ */
+ @SuppressWarnings("unchecked")
+ private void _createIndex(Topic[] topics, Association[] assocs) {
+ Arrays.sort(topics, _topicComparator);
+ Topic topic = null;
+ for (int i=0; i < topics.length; i++) {
+ topic = topics[i];
+ _construct2Id.put(topic, new Integer(i+1));
+ Set<Occurrence> occs_ = topic.getOccurrences();
+ Occurrence[] occs = occs_.toArray(new Occurrence[occs_.size()]);
+ Arrays.sort(occs, _occComparator);
+ _topic2Occs.put(topic, occs);
+ for (int j=0; j < occs.length; j++) {
+ _construct2Id.put(occs[j], new Integer(j+1));
+ }
+ Set<TopicName> names_ = topic.getTopicNames();
+ TopicName[] names = names_.toArray(new TopicName[names_.size()]);
+ Arrays.sort(names, _nameComparator);
+ _topic2Names.put(topic, names);
+ for (int j=0; j < names.length; j++) {
+ TopicName name = names[j];
+ _construct2Id.put(name, new Integer(j+1));
+ Set<Variant> variants_ = name.getVariants();
+ Variant[] variants = variants_.toArray(new Variant[variants_.size()]);
+ Arrays.sort(variants, _variantComparator);
+ _name2Variants.put(name, variants);
+ for (int k=0; k < variants.length; k++) {
+ _construct2Id.put(variants[k], new Integer(k+1));
+ }
+ }
+ }
+ Arrays.sort(assocs, _assocComparator);
+ Association assoc = null;
+ for (int i=0; i < assocs.length; i++) {
+ assoc = assocs[i];
+ _construct2Id.put(assoc, new Integer(i+1));
+ Set<AssociationRole> roles_ = assoc.getAssociationRoles();
+ AssociationRole[] roles = roles_.toArray(new AssociationRole[roles_.size()]);
+ Arrays.sort(roles, _roleComparator);
+ _assoc2Roles.put(assoc, roles);
+ for (int j=0; j < roles.length; j++) {
+ _construct2Id.put(roles[j], new Integer(j+1));
+ }
+ }
+ }
+
+ /**
+ * Returns a sorted array of roles of the provided association.
+ *
+ * @param assoc The association to retrieve the roles from.
+ * @return A (maybe empty) sorted array of roles.
+ */
+ private AssociationRole[] _getRoles(Association assoc) {
+ AssociationRole[] roles = _assoc2Roles.get(assoc);
+ return roles != null ? roles : _EMPTY_ROLES;
+ }
+
+ /**
+ * Returns a sorted array of names of the provided topic.
+ *
+ * @param topic The topic to retrieve the names from.
+ * @return A (maybe empty) sorted array of names.
+ */
+ private TopicName[] _getNames(Topic topic) {
+ TopicName[] names = _topic2Names.get(topic);
+ return names != null ? names : _EMPTY_NAMES;
+ }
+
+ /**
+ * Returs a sorted array of variants of the provided name.
+ *
+ * @param name The name to retrieve the variants from.
+ * @return A (maybe empty) sorted array of variants.
+ */
+ private Variant[] _getVariants(TopicName name) {
+ Variant[] variants = _name2Variants.get(name);
+ return variants != null ? variants : _EMPTY_VARIANTS;
+ }
+
+ /**
+ * Returns a sorted array of occurrences of the provided topic.
+ *
+ * @param topic The topic to retrieve the occurrences from.
+ * @return A (maybe emtpy) sorted array of occurrences.
+ */
+ private Occurrence[] _getOccurrences(Topic topic) {
+ Occurrence[] occs = _topic2Occs.get(topic);
+ return occs != null ? occs : _EMPTY_OCCS;
+ }
+
+ /**
+ * Returns the index of the provided Topic Maps construct.
+ *
+ * The "index" is <cite>"[...] the string encoding of the position of this
+ * information item in the canonically ordered list of the values from
+ * that set".</cite> (CXTM 3.20 Constructing the number attribute).
+ *
+ * @param tmo The Topic Maps construct to return the index of.
+ * @return The index of the Topic Maps construct.
+ */
+ private String _indexOf(TopicMapObject tmo) {
+ return _construct2Id.get(tmo).toString();
+ }
+
+ /**
+ * Serializes the <code>topic</code>.
+ *
+ * @param topic The topic to serialize.
+ * @throws IOException If an error occurs.
+ */
+ @SuppressWarnings("unchecked")
+ private void _writeTopic(Topic topic) throws IOException {
+ AttributesImpl attrs = new AttributesImpl();
+ _addReified(attrs, topic);
+ attrs.addAttribute("", "number", null, null, _indexOf(topic));
+ _out.startElement("topic", attrs);
+ _out.newline();
+ _writeLocatorSet("subjectIdentifiers", topic.getSubjectIdentifiers());
+ _writeLocatorSet("subjectLocators", topic.getSubjectLocators());
+ _writeItemIdentifiers(topic);
+ for (TopicName name: _getNames(topic)) {
+ _writeName(name);
+ }
+ for (Occurrence occ: _getOccurrences(topic)) {
+ _writeOccurrence(occ);
+ }
+ Set<AssociationRole> roles_ = new HashSet<AssociationRole>(topic.getRolesPlayed());
+ List<AssociationRole> alienRoles = _topic2Roles.get(topic);
+ if (alienRoles != null) {
+ roles_.addAll(alienRoles);
+ }
+ AssociationRole[] roles = roles_.toArray(new AssociationRole[roles_.size()]);
+ Arrays.sort(roles, _roleComparator);
+ AttributesImpl roleAttrs = new AttributesImpl();
+ StringBuilder sb = new StringBuilder();
+ for (int i=0; i < roles.length; i++) {
+ sb.append("association.")
+ .append(_indexOf(roles[i].getAssociation()))
+ .append(".role.")
+ .append(_indexOf(roles[i]));
+ roleAttrs.addAttribute("", "ref", null, null, sb.toString());
+ _out.startElement("rolePlayed", roleAttrs);
+ _out.endElement("rolePlayed");
+ _out.newline();
+ sb.setLength(0);
+ roleAttrs.clear();
+ }
+ _out.endElement("topic");
+ _out.newline();
+ }
+
+ /**
+ * Serializes an association.
+ *
+ * @param assoc The association to serialize.
+ * @throws IOException If an error occurs.
+ */
+ @SuppressWarnings("unchecked")
+ private void _writeAssociation(Association assoc) throws IOException {
+ _out.startElement("association", _attributes(assoc));
+ _out.newline();
+ _writeType((ITyped) assoc);
+ for (AssociationRole role: _getRoles(assoc)) {
+ _out.startElement("role", _attributes(role));
+ _out.newline();
+ _out.startElement("player", _topicRef(role.getPlayer()));
+ _out.endElement("player");
+ _out.newline();
+ _writeType((ITyped) role);
+ _out.endElement("role");
+ _out.newline();
+ }
+ _writeScope(assoc);
+ _writeItemIdentifiers(assoc);
+ _out.endElement("association");
+ _out.newline();
+ }
+
+ /**
+ * Serializes an occurrence.
+ *
+ * @param occ The occurrence to serialize.
+ * @throws IOException If an error occurs.
+ */
+ private void _writeOccurrence(Occurrence occ) throws IOException {
+ _out.startElement("occurrence", _attributes(occ));
+ _out.newline();
+ _writeDatatyped((IDatatypeAwareConstruct) occ);
+ _writeType((ITyped) occ);
+ _writeScope(occ);
+ _writeItemIdentifiers(occ);
+ _out.endElement("occurrence");
+ _out.newline();
+ }
+
+ /**
+ * Writes the value/datatype pair of an occurrence or variant.
+ *
+ * @param obj The construct to serialize.
+ * @throws IOException If an error occurs.
+ */
+ private void _writeDatatyped(IDatatypeAwareConstruct obj) throws IOException {
+ String value = obj.getValue2();
+ String datatype = obj.getDatatype().getReference();
+ if (_XSD_ANY_URI.equals(datatype)) {
+ value = _normalizeLocator(value);
+ }
+ _out.startElement("value");
+ _out.characters(value);
+ _out.endElement("value");
+ _out.newline();
+ _out.startElement("datatype");
+ _out.characters(_normalizeLocator(datatype));
+ _out.endElement("datatype");
+ _out.newline();
+ }
+
+ /**
+ * Serializes a topic name.
+ *
+ * @param name The name to serialize.
+ * @throws IOException If an error occurs.
+ */
+ private void _writeName(TopicName name) throws IOException {
+ _out.startElement("topicName", _attributes(name));
+ _out.newline();
+ _out.startElement("value");
+ _out.characters(name.getValue());
+ _out.endElement("value");
+ _out.newline();
+ _writeType((ITyped) name);
+ _writeScope(name);
+ for (Variant variant: _getVariants(name)) {
+ _out.startElement("variant", _attributes(variant));
+ _out.newline();
+ _writeDatatyped((IDatatypeAwareConstruct) variant);
+ _writeScope(variant);
+ _writeItemIdentifiers(variant);
+ _out.endElement("variant");
+ _out.newline();
+ }
+ _writeItemIdentifiers(name);
+ _out.endElement("topicName");
+ _out.newline();
+ }
+
+ /**
+ * Serializes the type of a typed Topic Maps construct.
+ *
+ * @param typed The typed Topic Maps construct from which the type should be
+ * serialized.
+ * @throws IOException If an error occurs.
+ */
+ private void _writeType(ITyped typed) throws IOException {
+ Topic type = typed.getType();
+ if (type == null) {
+ _reportInvalid("The type of " + typed + " is null");
+ }
+ _out.startElement("type", _topicRef(typed.getType()));
+ _out.endElement("type");
+ _out.newline();
+ }
+
+ /**
+ * Serializes the scope of a scoped Topic Maps construct.
+ *
+ * If the scope is unconstrained, this method does nothing.
+ *
+ * @param scoped The scoped Topic Maps construct.
+ * @throws IOException If an error occurs.
+ */
+ @SuppressWarnings("unchecked")
+ private void _writeScope(ScopedObject scoped) throws IOException {
+ Set<Topic> scope = scoped.getScope();
+ if (scope.isEmpty()) {
+ return;
+ }
+ _out.startElement("scope");
+ _out.newline();
+ Topic[] themes = scope.toArray(new Topic[scope.size()]);
+ Arrays.sort(themes, _topicComparator);
+ for (int i=0; i < themes.length; i++) {
+ _out.startElement("scopingTopic", _topicRef(themes[i]));
+ _out.endElement("scopingTopic");
+ _out.newline();
+ }
+ _out.endElement("scope");
+ _out.newline();
+ }
+
+ /**
+ * Serializes a locator.
+ *
+ * A normalized locator value is created which is serialized.
+ *
+ * @param loc The locator to serialize.
+ * @throws IOException If an error occurs.
+ */
+ private void _writeLocator(Locator loc) throws IOException {
+ _out.startElement("locator");
+ _out.characters(_normalizeLocator(loc.getReference()));
+ _out.endElement("locator");
+ _out.newline();
+ }
+
+ /**
+ * Serializes the item identifiers of the specified Topic Maps construct.
+ *
+ * @param tmo The Topic Maps construct to take the item identifiers from.
+ * @throws IOException If an error occurs.
+ */
+ @SuppressWarnings("unchecked")
+ private void _writeItemIdentifiers(TopicMapObject tmo) throws IOException {
+ _writeLocatorSet("itemIdentifiers", tmo.getSourceLocators());
+ }
+
+ /**
+ * Serializes the <code>locators</code> using the <code>localName</code> as
+ * element name.
+ *
+ * If the set of <code>locators</code> is empty, this method does nothing.
+ *
+ * @param localName The element's name.
+ * @param locators The locators to serialize.
+ * @throws IOException If an error occurs.
+ */
+ private void _writeLocatorSet(String localName, Set<Locator> locators) throws IOException {
+ if (locators.isEmpty()) {
+ return;
+ }
+ Locator[] locs = locators.toArray(new Locator[locators.size()]);
+ Arrays.sort(locs, _locComparator);
+ _out.startElement(localName);
+ for (int i=0; i < locs.length; i++) {
+ _writeLocator(locs[i]);
+ }
+ _out.endElement(localName);
+ _out.newline();
+ }
+
+ /**
+ * Returns attributes which contains a reference to the provided topic.
+ *
+ * @param topic The topic to which the reference should point to.
+ * @return Attributes with a topic reference.
+ */
+ private Attributes _topicRef(Topic topic) {
+ if (topic == null) {
+ _reportInvalid("The topic reference is null");
+ return CXTMWriter.EMPTY_ATTRS;
+ }
+ AttributesImpl attrs = new AttributesImpl();
+ attrs.addAttribute("", "topicref", null, null, _indexOf(topic));
+ return attrs;
+ }
+
+ /**
+ * Returns attributes which contain the reifier (if any) and the number
+ * of the provided Topic Maps construct (not a topic).
+ *
+ * @param reifiable The Topic Maps construct.
+ * @return Attributes which contain a reference to the reifier (if any) and
+ * the number of the provided Topic Maps construct.
+ */
+ private Attributes _attributes(TopicMapObject reifiable) {
+ AttributesImpl attrs = new AttributesImpl();
+ _addReifier(attrs, (IReifiable)reifiable);
+ attrs.addAttribute("", "number", null, null, _indexOf(reifiable));
+ return attrs;
+ }
+
+ /**
+ * Adds a reference to the reifier of the Topic Maps construct to the
+ * provided attributes. If the Topic Maps construct has no reifier, the
+ * provided attributes are not modified.
+ *
+ * @param attrs The attributes.
+ * @param reifiable The reifiable Topic Maps construct.
+ */
+ private void _addReifier(AttributesImpl attrs, IReifiable reifiable) {
+ Topic reifier = reifiable.getReifier();
+ if (reifier != null) {
+ attrs.addAttribute("", "reifier", null, null, _indexOf(reifier));
+ }
+ }
+
+ /**
+ * Adds a reference to the Topic Maps construct which is reified by the
+ * provided topic.
+ *
+ * If the topic reifies no Topic Maps construct, the attributes are not
+ * modified.
+ *
+ * @param attrs The attributes to add the reference to.
+ * @param topic The topic.
+ */
+ private void _addReified(AttributesImpl attrs, Topic topic) {
+ if (topic instanceof TypeInstanceTopic) {
+ return;
+ }
+ IReifiable reifiable = ((TopicImpl) topic).getReifiedConstruct();
+ if (reifiable == null) {
+ return;
+ }
+ StringBuilder sb = new StringBuilder();
+ if (reifiable instanceof TopicMap) {
+ sb.append("topicMap");
+ }
+ else if (reifiable instanceof Association) {
+ sb.append("association.")
+ .append(_indexOf(reifiable));
+ }
+ else if (reifiable instanceof AssociationRole) {
+ sb.append("association.")
+ .append(_indexOf(reifiable.getParent()))
+ .append(".role.")
+ .append(_indexOf(reifiable));
+ }
+ else {
+ sb.append("topic.");
+ final IConstruct parent = reifiable.getParent();
+ if (reifiable instanceof Occurrence) {
+ sb.append(_indexOf(parent))
+ .append(".occurrence.");
+ }
+ else if (reifiable instanceof TopicName) {
+ sb.append(_indexOf(parent))
+ .append(".name.");
+ }
+ else if (reifiable instanceof Variant) {
+ sb.append(_indexOf(parent.getParent()))
+ .append(".name.")
+ .append(_indexOf(parent))
+ .append(".variant.");
+ }
+ sb.append(_indexOf(reifiable));
+ }
+ attrs.addAttribute("", "reifier", null, null, sb.toString());
+ }
+
+ /**
+ * Normalizes the locator according to CXTM 3.19.
+ *
+ * @param locator The locator to normalize.
+ * @return A normalized representation of the locator.
+ */
+ private String _normalizeLocator(String locator) {
+ String normLoc = _locator2Norm.get(locator);
+ if (normLoc != null) {
+ return normLoc;
+ }
+ normLoc = locator;
+ if (locator.startsWith(_normBase)) {
+ normLoc = locator.substring(_normBase.length());
+ }
+ else {
+ int i = 0;
+ int slashPos = -1;
+ final int max = _normBase.length() < locator.length() ? _normBase.length()
+ : locator.length();
+ while(i < max && _normBase.charAt(i) == locator.charAt(i)) {
+ if (_normBase.charAt(i) == '/') {
+ slashPos = i;
+ }
+ i++;
+ }
+ if (slashPos > -1) {
+ normLoc = locator.substring(slashPos);
+ }
+ }
+ if (normLoc.startsWith("/")) {
+ normLoc = normLoc.substring(1);
+ }
+ _locator2Norm.put(locator, normLoc);
+ return normLoc;
+ }
+
+ /**
+ * Normalizes the base locator according to the following procedure
+ * (CXTM 3.19 - 1.):
+ * <cite>[...] the base locator with any fragment identifier and query
+ * removed and any trailing "/" character removed.[...]</cite>
+ *
+ * @param baseLocator
+ * @return
+ */
+ private static String _normalizeBaseLocator(String baseLocator) {
+ String loc = baseLocator;
+ int i = loc.indexOf('#');
+ if (i > 0) {
+ loc = loc.substring(0, i);
+ }
+ i = loc.indexOf('?');
+ if (i > 0) {
+ loc = loc.substring(0, i);
+ }
+ if (loc.endsWith("/")) {
+ loc = loc.substring(0, loc.length()-1);
+ }
+ return loc;
+ }
+
+ /**
+ * Writes a warning msg to the log.
+ *
+ * This method is used to inform the user that the serialized topic map
+ * is not valid CXTM.
+ *
+ * @param msg The warning message.
+ */
+ private static void _reportInvalid(String msg) {
+ LOG.warning("Invalid CXTM: '" + msg + "'");
+ }
+
+
+ /*
+ * Comparators.
+ */
+
+ private final class TopicComparator implements Comparator<Topic> {
+
+ @SuppressWarnings("unchecked")
+ public int compare(Topic o1, Topic o2) {
+ if (o1 == o2) {
+ return 0;
+ }
+ if (o1 != null && o2 == null) {
+ _reportInvalid("Comparing topics where one topic is null");
+ return +1;
+ }
+ else if (o1 == null && o2 != null) {
+ _reportInvalid("Comparing topics where one topic is null");
+ return -1;
+ }
+ int res = _locSetComparator.compare(o1.getSubjectIdentifiers(), o2.getSubjectIdentifiers());
+ if (res == 0) {
+ res = _locSetComparator.compare(o1.getSubjectLocators(), o2.getSubjectLocators());
+ if (res == 0) {
+ res = _locSetComparator.compare(o1.getSourceLocators(), o2.getSourceLocators());
+ }
+ }
+ return res;
+ }
+ }
+
+ /**
+ * Abstract comparator that provides some utility method which handle common
+ * comparisons.
+ */
+ private abstract class AbstractComparator<T> implements Comparator<T> {
+ int compareString(String o1, String o2) {
+ if (o1 == null && o2 != null) {
+ _reportInvalid("The first string value is null");
+ return -1;
+ }
+ if (o1 != null && o2 == null) {
+ _reportInvalid("The second string value is null");
+ return +1;
+ }
+ return o1.compareTo(o2);
+ }
+ /**
+ * Extracts the type of the typed Topic Maps constructs and compares
+ * the topics.
+ *
+ * @param o1 The first typed Topic Maps construct.
+ * @param o2 The second typed Topic Maps construct.
+ * @return A negative integer, zero, or a positive integer as the
+ * first argument is less than, equal to, or greater than the
+ * second.
+ */
+ int compareType(ITyped o1, ITyped o2) {
+ return _topicComparator.compare(o1.getType(), o2.getType());
+ }
+ /**
+ * Extracts the scope of the scoped Topic Maps constructs and compares
+ * them.
+ *
+ * @param o1 The first scoped Topic Maps construct.
+ * @param o2 The second scoped Topic Maps construct.
+ * @return A negative integer, zero, or a positive integer as the
+ * first argument is less than, equal to, or greater than the
+ * second.
+ */
+ @SuppressWarnings("unchecked")
+ int compareScope(ScopedObject o1, ScopedObject o2) {
+ return _scopeComparator.compare(o1.getScope(), o2.getScope());
+ }
+ }
+
+ /**
+ * Enhances the {@link AbstractComparator} with a method to compare the
+ * value and datatype of an occurrence or variant.
+ */
+ private abstract class AbstractDatatypeAwareComparator<T> extends AbstractComparator<T> {
+ /**
+ * Compares the value and datatype of the occurrences / variants.
+ *
+ * @param o1 The first occurrence / variant.
+ * @param o2 The second occurrence / variant.
+ * @return A negative integer, zero, or a positive integer as the
+ * first argument is less than, equal to, or greater than the
+ * second.
+ */
+ int _compareValueDatatype(IDatatypeAwareConstruct o1, IDatatypeAwareConstruct o2) {
+ int res = compareString(o1.getValue2(), o2.getValue2());
+ if (res == 0) {
+ res = compareString(o1.getDatatype().getReference(), o2.getDatatype().getReference());
+ }
+ return res;
+ }
+ }
+
+ /**
+ * Canonical sort order:
+ * 1. [type]
+ * 2. [roles]
+ * 3. [scope]
+ * 4. [parent]
+ */
+ private final class AssociationComparator extends AbstractComparator<Association> {
+
+ private Comparator<Set<AssociationRole>> _roleSetComparator;
+
+ AssociationComparator() {
+ _roleSetComparator = new RoleSetComparator();
+ }
+
+ @SuppressWarnings("unchecked")
+ public int compare(Association o1, Association o2) {
+ int res = compareType((ITyped) o1, (ITyped) o2);
+ if (res == 0) {
+ res = _roleSetComparator.compare(o1.getAssociationRoles(), o2.getAssociationRoles());
+ if (res == 0) {
+ res = compareScope(o1, o2);
+ }
+ }
+ return res;
+ }
+ }
+
+ /**
+ * Role comparator which ignores the parent association. This comparator
+ * is meant to be used for roles where the parent is always equal.
+ */
+ private class RoleIgnoreParentComparator extends AbstractComparator<AssociationRole> {
+
+ public int compare(AssociationRole o1, AssociationRole o2) {
+ int res = _topicComparator.compare(o1.getPlayer(), o2.getPlayer());
+ if (res == 0) {
+ res = compareType((ITyped) o1, (ITyped) o2);
+ }
+ return res;
+ }
+ }
+
+ /**
+ * Canonical sort order:
+ * 1. [player]
+ * 2. [type]
+ * 3. [parent]
+ */
+ private final class RoleComparator extends RoleIgnoreParentComparator {
+
+ public int compare(AssociationRole o1, AssociationRole o2) {
+ int res = super.compare(o1, o2);
+ if (res == 0) {
+ res = _assocComparator.compare(o1.getAssociation(), o2.getAssociation());
+ }
+ return res;
+ }
+ }
+
+ /**
+ * Canonical sort order:
+ * 1. [value]
+ * 2. [datatype]
+ * 3. [type]
+ * 4. [scope]
+ * 5. [parent]
+ */
+ private final class OccurrenceComparator extends AbstractDatatypeAwareComparator<Occurrence> {
+
+ public int compare(Occurrence o1, Occurrence o2) {
+ int res = _compareValueDatatype((IDatatypeAwareConstruct) o1, (IDatatypeAwareConstruct) o2);
+ if (res == 0) {
+ res = compareType((ITyped) o1, (ITyped) o2);
+ if (res == 0) {
+ res = compareScope(o1, o2);
+ }
+ }
+ return res;
+ }
+
+ }
+
+ /**
+ * Canonical sort order:
+ * 1. [value]
+ * 2. [type]
+ * 3. [scope]
+ * 4. [parent]
+ */
+ private final class NameComparator extends AbstractComparator<TopicName> {
+
+ public int compare(TopicName o1, TopicName o2) {
+ int res = compareString(o1.getValue(), o2.getValue());
+ if (res == 0) {
+ res = compareType((ITyped) o1, (ITyped) o2);
+ if (res == 0) {
+ res = compareScope(o1, o2);
+ }
+ }
+ return res;
+ }
+ }
+
+ /**
+ * Canonical sort order:
+ * 1. [value]
+ * 2. [datatype]
+ * 3. [scope]
+ * 4. [parent]
+ */
+ private final class VariantComparator extends AbstractDatatypeAwareComparator<Variant> {
+
+ public int compare(Variant o1, Variant o2) {
+ int res = _compareValueDatatype((IDatatypeAwareConstruct) o1, (IDatatypeAwareConstruct) o2);
+ if (res == 0) {
+ res = compareScope(o1, o2);
+ }
+ return res;
+ }
+ }
+
+ /**
+ * Comparator which compares the size of the provided set.
+ *
+ * Iff the size of the sets are equal, another comparison method is used
+ * to compare the content of the sets.
+ */
+ private abstract class AbstractSetComparator<T> implements Comparator<Set<T>> {
+
+ public int compare(Set<T> o1, Set<T> o2) {
+ int s1 = o1.size();
+ int s2 = o2.size();
+ int res = s1 - s2;
+ if (res == 0) {
+ res = compareContent(o1, o2, s1);
+ }
+ return res;
+ }
+
+ /**
+ * Called iff the size of the sets is equal.
+ *
+ * This method is used to compare the content of the sets.
+ *
+ * @param o1 The first set.
+ * @param o2 The second set.
+ * @param size The size of the set(s).
+ * @return A negative integer, zero, or a positive integer as the
+ * first argument is less than, equal to, or greater than the
+ * second.
+ */
+ abstract int compareContent(Set<T> o1, Set<T> o2, int size);
+ }
+
+ /**
+ * Compares role sets. The parent of the roles is ignored!
+ */
+ private final class RoleSetComparator extends AbstractSetComparator<AssociationRole> {
+
+ private RoleIgnoreParentComparator _roleCmp;
+
+ RoleSetComparator() {
+ _roleCmp = new RoleIgnoreParentComparator();
+ }
+
+ @Override
+ int compareContent(Set<AssociationRole> o1, Set<AssociationRole> o2,
+ int size) {
+ int res = 0;
+ AssociationRole[] roles1 = o1.toArray(new AssociationRole[size]);
+ AssociationRole[] roles2 = o2.toArray(new AssociationRole[size]);
+ Arrays.sort(roles1, _roleCmp);
+ Arrays.sort(roles2, _roleCmp);
+ for (int i=0; i < size && res == 0; i++) {
+ res = _roleCmp.compare(roles1[i], roles2[i]);
+ }
+ return res;
+ }
+
+ }
+
+ /**
+ * Compares the scope of two scoped Topic Maps constructs.
+ */
+ private final class ScopeComparator extends AbstractSetComparator<Topic> {
+
+ @Override
+ int compareContent(Set<Topic> o1, Set<Topic> o2, int size) {
+ int res = 0 ;
+ Topic[] topics1 = o1.toArray(new Topic[size]);
+ Topic[] topics2 = o2.toArray(new Topic[size]);
+ Arrays.sort(topics1, _topicComparator);
+ Arrays.sort(topics2, _topicComparator);
+ for (int i=0; i < size && res == 0; i++) {
+ res = _topicComparator.compare(topics1[i], topics2[i]);
+ }
+ return res;
+ }
+
+ }
+
+ /**
+ * Comparator for sets of {@link org.tmapi.core.Locator}s.
+ */
+ private final class LocatorSetComparator extends AbstractSetComparator<Locator> {
+
+ @Override
+ int compareContent(Set<Locator> o1, Set<Locator> o2, int size) {
+ int res = 0;
+ Locator[] locs1 = o1.toArray(new Locator[size]);
+ Locator[] locs2 = o2.toArray(new Locator[size]);
+ Arrays.sort(locs1, _locComparator);
+ Arrays.sort(locs2, _locComparator);
+ for (int i=0; i < size && res == 0; i++) {
+ res = _locComparator.compare(locs1[i], locs2[i]);
+ }
+ return res;
+ }
+ }
+
+ /**
+ * Compares {@link org.tmapi.core.Locator}s.
+ */
+ private final class LocatorComparator implements Comparator<Locator> {
+
+ public int compare(Locator o1, Locator o2) {
+ return _normalizeLocator(o1.getReference()).compareTo(_normalizeLocator(o2.getReference()));
+ }
+
+ }
+
+
+ /*
+ * Helper classes to treat type-instance relationships, modelled as property
+ * of a topic, as associations.
+ */
+
+ @SuppressWarnings("unchecked")
+ private final class TypeInstanceTopic implements Topic {
+
+ private final Set<Locator> _sids;
+
+ TypeInstanceTopic(Locator sid) {
+ _sids = Collections.singleton(sid);
+ }
+
+ public Set<Locator> getSubjectIdentifiers() {
+ return _sids;
+ }
+
+ public void addSourceLocator(Locator arg0) throws DuplicateSourceLocatorException, MergeException { }
+ public void addSubjectIdentifier(Locator arg0) throws MergeException {}
+ public void addSubjectLocator(Locator arg0) throws MergeException, ModelConstraintException {}
+ public void addType(Topic arg0) {}
+ public Occurrence createOccurrence(String arg0, Topic arg1, Collection arg2) { return null; }
+ public Occurrence createOccurrence(Locator arg0, Topic arg1, Collection arg2) { return null; }
+ public TopicName createTopicName(String arg0, Collection arg1) throws MergeException { return null; }
+ public TopicName createTopicName(String arg0, Topic arg1, Collection arg2) throws UnsupportedOperationException, MergeException { return null; }
+ public Set getOccurrences() { return Collections.emptySet(); }
+ public Set getReified() { return null; }
+ public Set getRolesPlayed() { return Collections.emptySet(); }
+ public Set getSubjectLocators() { return Collections.emptySet(); }
+ public Set getTopicNames() { return Collections.emptySet(); }
+ public Set getTypes() { return null; }
+ public void mergeIn(Topic arg0) throws MergeException { }
+ public void remove() throws TopicInUseException { }
+ public void removeSubjectIdentifier(Locator arg0) { }
+ public void removeSubjectLocator(Locator arg0) { }
+ public void removeType(Topic arg0) { }
+ public String getObjectId() { return null; }
+ public Set getSourceLocators() { return Collections.emptySet(); }
+ public TopicMap getTopicMap() { return null; }
+ public void removeSourceLocator(Locator arg0) { }
+ }
+
+ /**
+ * Used to represent type-instance relationships which are modelled as
+ * [type] property of topics.
+ */
+ @SuppressWarnings("unchecked")
+ private final class TypeInstanceAssociation implements Association, IReifiable, ITyped {
+
+ final Set<AssociationRole> _roles;
+
+ TypeInstanceAssociation(Topic type, Topic instance) {
+ AssociationRole typeRole = new TypeInstanceRole(this, _type, type);
+ AssociationRole instanceRole = new TypeInstanceRole(this, _instance, instance);
+ _roles = new TypeInstanceRoleSet(typeRole, instanceRole);
+ }
+
+ public Set<AssociationRole> getAssociationRoles() {
+ return _roles;
+ }
+
+ public Topic getType() {
+ return _typeInstance;
+ }
+
+ public void setReifier(Topic reifier) { }
+ public void addItemIdentifier(Locator itemIdentifier) { }
+ public Set<Locator> getItemIdentifiers() { return Collections.emptySet(); }
+ public IConstruct getParent() { return null; }
+ public void removeItemIdentifier(Locator itemIdentifier) { }
+ public AssociationRole createAssociationRole(Topic arg0, Topic arg1) { return null; }
+ public Topic getReifier() { return null; }
+ public void remove() throws TMAPIException {}
+ public void setType(Topic arg0) {}
+ public void addScopingTopic(Topic arg0) {}
+ public Set getScope() { return Collections.emptySet(); }
+ public void removeScopingTopic(Topic arg0) {}
+ public void addSourceLocator(Locator arg0) throws DuplicateSourceLocatorException {}
+ public String getObjectId() { return null; }
+ public Set getSourceLocators() { return Collections.emptySet(); }
+ public TopicMap getTopicMap() { return null; }
+ public void removeSourceLocator(Locator arg0) {}
+ }
+
+ /**
+ * Immutable association role.
+ */
+ @SuppressWarnings("unchecked")
+ private class TypeInstanceRole implements AssociationRole , IReifiable, ITyped {
+ private final Topic _type;
+ private final Topic _player;
+ private final Association _parent;
+
+ TypeInstanceRole(Association parent, Topic type, Topic player) {
+ _type = type;
+ _player = player;
+ _parent = parent;
+ List<AssociationRole> roles = _topic2Roles.get(player);
+ if (roles == null) {
+ roles = new ArrayList<AssociationRole>();
+ _topic2Roles.put(player, roles);
+ }
+ roles.add(this);
+ }
+
+ public Topic getType() {
+ return _type;
+ }
+
+ public Topic getPlayer() {
+ return _player;
+ }
+
+ public void setReifier(Topic reifier) { }
+ public void addItemIdentifier(Locator itemIdentifier) { }
+ public Set<Locator> getItemIdentifiers() { return Collections.emptySet(); }
+ public IConstruct getParent() { return (IConstruct) _parent; }
+ public void removeItemIdentifier(Locator itemIdentifier) { }
+ public Association getAssociation() { return _parent; }
+ public Topic getReifier() { return null; }
+ public void remove() throws TMAPIException {}
+ public void setPlayer(Topic arg0) {}
+ public void setType(Topic arg0) {}
+ public void addSourceLocator(Locator arg0) throws DuplicateSourceLocatorException {}
+ public String getObjectId() { return null; }
+ public Set getSourceLocators() { return Collections.emptySet(); }
+ public TopicMap getTopicMap() { return null; }
+ public void removeSourceLocator(Locator arg0) {}
+ }
+
+ /**
+ * Immutable 'set' of two roles.
+ */
+ private static class TypeInstanceRoleSet extends AbstractSet<AssociationRole> {
+
+ private final AssociationRole _role1;
+ private final AssociationRole _role2;
+
+ TypeInstanceRoleSet(AssociationRole role1, AssociationRole role2) {
+ _role1 = role1;
+ _role2 = role2;
+ }
+
+ @Override
+ public Iterator<AssociationRole> iterator() {
+ return new TypeInstanceRoleSetIterator();
+ }
+
+ @Override
+ public int size() {
+ return 2;
+ }
+
+ private class TypeInstanceRoleSetIterator implements Iterator<AssociationRole> {
+
+ private int _idx;
+
+ public boolean hasNext() {
+ return _idx < 2;
+ }
+
+ public AssociationRole next() {
+ if (_idx > 1) {
+ throw new NoSuchElementException();
+ }
+ return 0 == _idx++ ? _role1 : _role2;
+ }
+
+ public void remove() {
+ new UnsupportedOperationException();
+ }
+ }
+ }
+
+}
Property changes on: tinytim-cxtm/trunk/src/main/java/org/tinytim/cxtm/Canonicalizer.java
___________________________________________________________________
Name: svn:keywords
+ Rev Date Id
Name: svn:eol-style
+ native
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