001 package de.deepamehta.core.model;
002
003 import org.codehaus.jettison.json.JSONObject;
004
005 import java.util.ArrayList;
006 import java.util.Collection;
007 import java.util.List;
008 import java.util.Map;
009 import java.util.logging.Logger;
010
011
012
013 /**
014 * Definition of an association between 2 topic types -- part of DeepaMehta's type system,
015 * like an association in a class diagram. Used to represent both, aggregations and compositions.
016 * ### FIXDOC: also assoc types have assoc defs
017 *
018 * @author <a href="mailto:jri@deepamehta.de">Jörg Richter</a>
019 */
020 public class AssociationDefinitionModel extends AssociationModel {
021
022 // ---------------------------------------------------------------------------------------------- Instance Variables
023
024 private String instanceLevelAssocTypeUri; // derived, not serialized
025
026 private String parentTypeUri; // derived, not serialized
027 private String childTypeUri; // derived, not serialized
028
029 private String parentCardinalityUri;
030 private String childCardinalityUri;
031
032 private ViewConfigurationModel viewConfigModel; // is never null
033
034 private Logger logger = Logger.getLogger(getClass().getName());
035
036 // ---------------------------------------------------------------------------------------------------- Constructors
037
038 public AssociationDefinitionModel(String typeUri, String parentTypeUri, String childTypeUri,
039 String parentCardinalityUri, String childCardinalityUri) {
040 this(-1, null, typeUri, parentTypeUri, childTypeUri, parentCardinalityUri, childCardinalityUri, null);
041 }
042
043 public AssociationDefinitionModel(long id, String uri, String typeUri, String parentTypeUri, String childTypeUri,
044 String parentCardinalityUri, String childCardinalityUri,
045 ViewConfigurationModel viewConfigModel) {
046 super(id, uri, typeUri, parentRoleModel(parentTypeUri), childRoleModel(childTypeUri));
047 //
048 this.instanceLevelAssocTypeUri = instanceLevelAssocTypeUri(typeUri);
049 //
050 this.parentTypeUri = parentTypeUri;
051 this.childTypeUri = childTypeUri;
052 //
053 this.parentCardinalityUri = parentCardinalityUri;
054 this.childCardinalityUri = childCardinalityUri;
055 //
056 this.viewConfigModel = viewConfigModel != null ? viewConfigModel : new ViewConfigurationModel();
057 }
058
059 // -------------------------------------------------------------------------------------------------- Public Methods
060
061 public String getInstanceLevelAssocTypeUri() {
062 return instanceLevelAssocTypeUri;
063 }
064
065 public String getParentTypeUri() {
066 return parentTypeUri;
067 }
068
069 public String getChildTypeUri() {
070 return childTypeUri;
071 }
072
073 public String getParentCardinalityUri() {
074 return parentCardinalityUri;
075 }
076
077 public String getChildCardinalityUri() {
078 return childCardinalityUri;
079 }
080
081 public ViewConfigurationModel getViewConfigModel() {
082 return viewConfigModel;
083 }
084
085 // ---
086
087 @Override
088 public void setTypeUri(String typeUri) {
089 super.setTypeUri(typeUri);
090 this.instanceLevelAssocTypeUri = instanceLevelAssocTypeUri(typeUri);
091 }
092
093 public void setParentCardinalityUri(String parentCardinalityUri) {
094 this.parentCardinalityUri = parentCardinalityUri;
095 }
096
097 public void setChildCardinalityUri(String childCardinalityUri) {
098 this.childCardinalityUri = childCardinalityUri;
099 }
100
101 public void setViewConfigModel(ViewConfigurationModel viewConfigModel) {
102 this.viewConfigModel = viewConfigModel;
103 }
104
105 // ---
106
107 public JSONObject toJSON() {
108 try {
109 JSONObject o = super.toJSON();
110 o.put("parent_cardinality_uri", parentCardinalityUri);
111 o.put("child_cardinality_uri", childCardinalityUri);
112 viewConfigModel.toJSON(o);
113 return o;
114 } catch (Exception e) {
115 throw new RuntimeException("Serialization failed (" + this + ")", e);
116 }
117 }
118
119 // ---
120
121 @Override
122 public String toString() {
123 return "\n association definition (" + super.toString() +
124 ",\n parent cardinality=\"" + parentCardinalityUri +
125 "\",\n child cardinality=\"" + childCardinalityUri +
126 "\",\n " + viewConfigModel + ")\n";
127 }
128
129 // ----------------------------------------------------------------------------------------- Package Private Methods
130
131 static AssociationDefinitionModel fromJSON(JSONObject assocDef, String parentTypeUri) {
132 try {
133 long id = assocDef.optLong("id", -1);
134 String uri = null;
135 String typeUri = assocDef.getString("assoc_type_uri");
136 String childTypeUri = assocDef.getString("child_type_uri");
137 //
138 if (!assocDef.has("parent_cardinality_uri") && !typeUri.equals("dm4.core.composition_def")) {
139 throw new RuntimeException("\"parent_cardinality_uri\" is missing");
140 }
141 String parentCardinalityUri = assocDef.optString("parent_cardinality_uri", "dm4.core.one");
142 String childCardinalityUri = assocDef.getString("child_cardinality_uri");
143 //
144 ViewConfigurationModel viewConfigModel = new ViewConfigurationModel(assocDef);
145 //
146 return new AssociationDefinitionModel(id, uri, typeUri, parentTypeUri, childTypeUri,
147 parentCardinalityUri, childCardinalityUri, viewConfigModel);
148 } catch (Exception e) {
149 throw new RuntimeException("Parsing AssociationDefinitionModel failed (JSONObject=" + assocDef + ")", e);
150 }
151 }
152
153 static void toJSON(Collection<AssociationDefinitionModel> assocDefs, JSONObject o) throws Exception {
154 List assocDefList = new ArrayList();
155 for (AssociationDefinitionModel assocDef : assocDefs) {
156 assocDefList.add(assocDef.toJSON());
157 }
158 o.put("assoc_defs", assocDefList);
159 }
160
161 // ------------------------------------------------------------------------------------------------- Private Methods
162
163 private static TopicRoleModel parentRoleModel(String parentTypeUri) {
164 return new TopicRoleModel(parentTypeUri, "dm4.core.parent_type");
165 }
166
167 private static TopicRoleModel childRoleModel(String childTypeUri) {
168 return new TopicRoleModel(childTypeUri, "dm4.core.child_type");
169 }
170
171 // ---
172
173 private String instanceLevelAssocTypeUri(String typeUri) {
174 if (typeUri.equals("dm4.core.aggregation_def")) {
175 return "dm4.core.aggregation";
176 } else if (typeUri.equals("dm4.core.composition_def")) {
177 return "dm4.core.composition";
178 } else {
179 throw new RuntimeException("Unexpected association type URI: \"" + typeUri + "\"");
180 }
181 }
182 }