testing extratable selectByWhereClause
[mir.git] / source / mircoders / localizer / basic / MirBasicDataModelLocalizer.java
1 /*
2  * Copyright (C) 2001, 2002 The Mir-coders group
3  *
4  * This file is part of Mir.
5  *
6  * Mir is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2 of the License, or
9  * (at your option) any later version.
10  *
11  * Mir is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with Mir; if not, write to the Free Software
18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
19  *
20  * In addition, as a special exception, The Mir-coders gives permission to link
21  * the code of this program with  any library licensed under the Apache Software License,
22  * The Sun (tm) Java Advanced Imaging library (JAI), The Sun JIMI library
23  * (or with modified versions of the above that use the same license as the above),
24  * and distribute linked combinations including the two.  You must obey the
25  * GNU General Public License in all respects for all of the code used other than
26  * the above mentioned libraries.  If you modify this file, you may extend this
27  * exception to your version of the file, but you are not obligated to do so.
28  * If you do not wish to do so, delete this exception statement from your version.
29  */
30 package mircoders.localizer.basic;
31
32 import java.util.HashMap;
33 import java.util.Iterator;
34 import java.util.List;
35 import java.util.Map;
36 import java.util.Vector;
37
38 import mir.config.MirPropertiesConfiguration;
39 import mir.entity.Entity;
40 import mir.entity.adapter.EntityAdapter;
41 import mir.entity.adapter.EntityAdapterDefinition;
42 import mir.entity.adapter.EntityAdapterModel;
43 import mir.log.LoggerWrapper;
44 import mir.media.MediaHelper;
45 import mir.media.MirMedia;
46 import mir.util.ParameterExpander;
47 import mir.util.RewindableIterator;
48 import mir.util.StructuredContentParser;
49 import mircoders.entity.EntityUploadedMedia;
50 import mircoders.global.MirGlobal;
51 import mircoders.localizer.MirAdminInterfaceLocalizer;
52 import mircoders.localizer.MirDataModelLocalizer;
53 import mircoders.localizer.MirLocalizerExc;
54 import mircoders.localizer.MirLocalizerFailure;
55 import mircoders.storage.DatabaseArticleType;
56 import mircoders.storage.DatabaseAudio;
57 import mircoders.storage.DatabaseBreaking;
58 import mircoders.storage.DatabaseComment;
59 import mircoders.storage.DatabaseCommentStatus;
60 import mircoders.storage.DatabaseContent;
61 import mircoders.storage.DatabaseContentToMedia;
62 import mircoders.storage.DatabaseContentToTopics;
63 import mircoders.storage.DatabaseImageType;
64 import mircoders.storage.DatabaseImages;
65 import mircoders.storage.DatabaseLanguage;
66 import mircoders.storage.DatabaseMediaType;
67 import mircoders.storage.DatabaseMediafolder;
68 import mircoders.storage.DatabaseMessages;
69 import mircoders.storage.DatabaseOther;
70 import mircoders.storage.DatabaseTopics;
71 import mircoders.storage.DatabaseUploadedMedia;
72 import mircoders.storage.DatabaseUsers;
73 import mircoders.storage.DatabaseVideo;
74
75 public class MirBasicDataModelLocalizer implements MirDataModelLocalizer {
76   protected LoggerWrapper logger;
77   protected MirPropertiesConfiguration configuration;
78
79   public MirBasicDataModelLocalizer() throws MirLocalizerFailure, MirLocalizerExc {
80     logger = new LoggerWrapper("Localizer.DataModel");
81
82     try {
83       configuration = MirPropertiesConfiguration.instance();
84     }
85     catch (Throwable e) {
86       throw new MirLocalizerFailure("Can't get configuration: " + e.getMessage(), e);
87     }
88   }
89
90   protected void constructContentAdapterDefinition(EntityAdapterDefinition anEntityAdapterDefinition) throws MirLocalizerFailure, MirLocalizerExc {
91     try {
92       anEntityAdapterDefinition.addDBDateField("creationdate", "webdb_create", configuration.getString("Mir.DefaultTimezone"));
93       anEntityAdapterDefinition.addDBDateField("changedate", "webdb_lastchange", configuration.getString("Mir.DefaultTimezone"));
94       anEntityAdapterDefinition.addMirDateField("date", "date", configuration.getString("Mir.DefaultTimezone"));
95       anEntityAdapterDefinition.addCalculatedField("to_topics", new ContentToTopicsField());
96       anEntityAdapterDefinition.addCalculatedField("to_comments", new ContentToCommentsField());
97       anEntityAdapterDefinition.addCalculatedField("language", new ContentToLanguageField());
98
99       anEntityAdapterDefinition.addCalculatedField("commentcount", new ContentCommentCountField(" and is_published='1'"));
100       anEntityAdapterDefinition.addCalculatedField("fullcommentcount", new ContentCommentCountField(""));
101
102       anEntityAdapterDefinition.addCalculatedField("to_uploaded_media", new ContentToMediaField( "uploadedMedia" ));
103       anEntityAdapterDefinition.addCalculatedField("to_media_images",  new ContentToMediaField( "image" ));
104       anEntityAdapterDefinition.addCalculatedField("to_media_audio", new ContentToMediaField( "audio" ));
105       anEntityAdapterDefinition.addCalculatedField("to_media_video", new ContentToMediaField( "video" ));
106       anEntityAdapterDefinition.addCalculatedField("to_media_other", new ContentToMediaField( "otherMedia" ));
107       anEntityAdapterDefinition.addCalculatedField("to_all_uploaded_media", new ContentToMediaField( "uploadedMedia", false));
108       anEntityAdapterDefinition.addCalculatedField("to_all_media_images",  new ContentToMediaField( "image", false));
109       anEntityAdapterDefinition.addCalculatedField("to_all_media_audio", new ContentToMediaField( "audio", false));
110       anEntityAdapterDefinition.addCalculatedField("to_all_media_video", new ContentToMediaField( "video", false));
111       anEntityAdapterDefinition.addCalculatedField("to_all_media_other", new ContentToMediaField( "otherMedia", false));
112       anEntityAdapterDefinition.addCalculatedField("to_media_icon", new ContentToIconField());
113
114       anEntityAdapterDefinition.addCalculatedField("article_type", new ContentToArticleTypeField());
115
116       anEntityAdapterDefinition.addCalculatedField("description_parsed", new FilteredField("description"));
117       anEntityAdapterDefinition.addCalculatedField("content_data_parsed", new FilteredField("content_data"));
118
119       anEntityAdapterDefinition.addCalculatedField("children", new ContentToChildrenField());
120       anEntityAdapterDefinition.addCalculatedField("parent", new ContentToParentField());
121
122       anEntityAdapterDefinition.addCalculatedField("publicurl", new ExpandedField(configuration.getString("Article.PublicUrl")));
123
124       anEntityAdapterDefinition.addCalculatedField("operations",
125           new EntityToSimpleOperationsField(MirGlobal.localizer().adminInterface().simpleArticleOperations()));
126     }
127     catch (Throwable t) {
128       throw new MirLocalizerFailure(t.getMessage(), t);
129     }
130   }
131
132   protected void constructCommentAdapterDefinition(EntityAdapterDefinition anEntityAdapterDefinition) throws MirLocalizerFailure {
133     try {
134       anEntityAdapterDefinition.addDBDateField("creationdate", "webdb_create", configuration.getString("Mir.DefaultTimezone"));
135       anEntityAdapterDefinition.addCalculatedField("to_content", new CommentToContentField());
136       anEntityAdapterDefinition.addCalculatedField("status", new CommentToStatusField());
137
138       anEntityAdapterDefinition.addCalculatedField("to_uploaded_media", new CommentToMediaField( "uploadedMedia" ));
139       anEntityAdapterDefinition.addCalculatedField("to_media_images",  new CommentToMediaField( "image" ));
140       anEntityAdapterDefinition.addCalculatedField("to_media_audio", new CommentToMediaField( "audio" ));
141       anEntityAdapterDefinition.addCalculatedField("to_media_video", new CommentToMediaField( "video" ));
142       anEntityAdapterDefinition.addCalculatedField("to_media_other", new CommentToMediaField( "otherMedia" ));
143       anEntityAdapterDefinition.addCalculatedField("to_all_uploaded_media", new CommentToMediaField( "uploadedMedia", false));
144       anEntityAdapterDefinition.addCalculatedField("to_all_media_images",  new CommentToMediaField( "image", false));
145       anEntityAdapterDefinition.addCalculatedField("to_all_media_audio", new CommentToMediaField( "audio", false));
146       anEntityAdapterDefinition.addCalculatedField("to_all_media_video", new CommentToMediaField( "video", false));
147       anEntityAdapterDefinition.addCalculatedField("to_all_media_other", new CommentToMediaField( "otherMedia", false));
148
149       anEntityAdapterDefinition.addCalculatedField("publicurl", new ExpandedField(configuration.getString("Comment.PublicUrl")));
150
151       anEntityAdapterDefinition.addCalculatedField("description_parsed", new FilteredField("description"));
152       anEntityAdapterDefinition.addCalculatedField("operations",
153           new EntityToSimpleOperationsField(MirGlobal.localizer().adminInterface().simpleCommentOperations()));
154     }
155     catch (Throwable t) {
156       throw new MirLocalizerFailure(t.getMessage(), t);
157     }
158   }
159
160   public EntityAdapterModel adapterModel() throws MirLocalizerFailure, MirLocalizerExc {
161     EntityAdapterModel result = new EntityAdapterModel();
162
163     try {
164       EntityAdapterDefinition definition;
165
166       definition = new EntityAdapterDefinition();
167       constructContentAdapterDefinition( definition );
168       result.addMapping( "content", DatabaseContent.getInstance(), definition);
169
170       definition = new EntityAdapterDefinition();
171       constructCommentAdapterDefinition( definition );
172       result.addMapping( "comment", DatabaseComment.getInstance(), definition);
173
174       result.addMapping( "articleType", DatabaseArticleType.getInstance(), new EntityAdapterDefinition());
175       result.addMapping( "commentStatus", DatabaseCommentStatus.getInstance(), new EntityAdapterDefinition());
176
177       definition = new EntityAdapterDefinition();
178       definition.addDBDateField("creationdate", "webdb_create", configuration.getString("Mir.DefaultTimezone"));
179       result.addMapping( "breakingNews", DatabaseBreaking.getInstance(), definition);
180
181       definition = new EntityAdapterDefinition();
182       definition.addDBDateField("creationdate", "webdb_create", configuration.getString("Mir.DefaultTimezone"));
183       result.addMapping( "internalMessage", DatabaseMessages.getInstance(), definition);
184
185       definition = new EntityAdapterDefinition();
186       definition.addCalculatedField("mediafolder", new MediaToMediaFolderField());
187       result.addMapping( "uploadedMedia", DatabaseUploadedMedia.getInstance(), definition);
188       definition = new EntityAdapterDefinition();
189       definition.addCalculatedField("mediafolder", new MediaToMediaFolderField());
190       result.addMapping( "image", DatabaseImages.getInstance(), definition);
191       definition = new EntityAdapterDefinition();
192       definition.addCalculatedField("mediafolder", new MediaToMediaFolderField());
193       result.addMapping( "audio", DatabaseAudio.getInstance(), definition);
194       definition = new EntityAdapterDefinition();
195       definition.addCalculatedField("mediafolder", new MediaToMediaFolderField());
196       result.addMapping( "video", DatabaseVideo.getInstance(), definition);
197       definition = new EntityAdapterDefinition();
198       definition.addCalculatedField("mediafolder", new MediaToMediaFolderField());
199       result.addMapping( "otherMedia", DatabaseOther.getInstance(), definition);
200
201
202       result.addMapping( "mediaFolder", DatabaseMediafolder.getInstance(), new EntityAdapterDefinition());
203       result.addMapping( "imageType", DatabaseImageType.getInstance(), new EntityAdapterDefinition());
204       result.addMapping( "language", DatabaseLanguage.getInstance(), new EntityAdapterDefinition());
205       result.addMapping( "mediaType", DatabaseMediaType.getInstance(), new EntityAdapterDefinition());
206       result.addMapping( "topic", DatabaseTopics.getInstance(), new EntityAdapterDefinition());
207       result.addMapping( "user", DatabaseUsers.getInstance(), new EntityAdapterDefinition());
208       result.addMapping( "otherMedia", DatabaseOther.getInstance(), new EntityAdapterDefinition());
209
210       result.addMapping( "content_x_topic", DatabaseContentToTopics.getInstance(), new EntityAdapterDefinition());
211
212     }
213     catch (Throwable t) {
214       throw new MirLocalizerFailure(t.getMessage(), t);
215     }
216
217     return result;
218   }
219
220   protected class CommentToContentField implements EntityAdapterDefinition.CalculatedField {
221     public Object getValue(EntityAdapter anEntityAdapter) {
222       try {
223         return anEntityAdapter.getToOneRelation(
224                     "id="+anEntityAdapter.get("to_media"),
225                     "id",
226                     "content" );
227       }
228       catch (Throwable t) {
229         throw new RuntimeException(t.getMessage());
230       }
231     }
232   }
233
234   protected class CommentToStatusField implements EntityAdapterDefinition.CalculatedField {
235     public Object getValue(EntityAdapter anEntityAdapter) {
236       try {
237         return anEntityAdapter.getToOneRelation(
238                     "id="+anEntityAdapter.get("to_comment_status"),
239                     "id",
240                     "commentStatus" );
241       }
242       catch (Throwable t) {
243         throw new RuntimeException(t.getMessage());
244       }
245     }
246   }
247
248   protected class EntityToSimpleOperationsField implements EntityAdapterDefinition.CalculatedField {
249     private List operations;
250
251     public EntityToSimpleOperationsField(List anOperations) {
252       operations = anOperations;
253     }
254
255     public Object getValue(EntityAdapter anEntityAdapter) {
256       try {
257         Iterator i = operations.iterator();
258         List availableOperations = new Vector();
259
260         while (i.hasNext()) {
261           MirAdminInterfaceLocalizer.MirSimpleEntityOperation operation =
262             (MirAdminInterfaceLocalizer.MirSimpleEntityOperation) i.next();
263
264           if (operation.isAvailable(anEntityAdapter)) {
265             availableOperations.add(operation.getName());
266           }
267         };
268
269         return availableOperations;
270       }
271       catch (Throwable t) {
272         throw new RuntimeException(t.getMessage());
273       }
274     }
275   }
276
277   protected class FilteredField implements EntityAdapterDefinition.CalculatedField {
278     private String fieldName;
279
280     public FilteredField(String aFieldName) {
281       fieldName = aFieldName;
282     }
283
284     public Object getValue(EntityAdapter anEntityAdapter) {
285       try {
286         if (anEntityAdapter.get("is_html")!=null && anEntityAdapter.get("is_html").equals("1")) {
287           return MirGlobal.localizer().producerAssistant().filterHTMLText((String) anEntityAdapter.get(fieldName));
288         }
289         else {
290           return MirGlobal.localizer().producerAssistant().filterNonHTMLText((String) anEntityAdapter.get(fieldName));
291         }
292       }
293       catch (Throwable t) {
294         throw new RuntimeException(t.getMessage());
295       }
296     }
297   }
298
299   protected class StructuredContentField implements EntityAdapterDefinition.CalculatedField {
300     private String expression;
301
302     public StructuredContentField(String anExpression) {
303       expression = anExpression;
304     }
305
306     public Object getValue(EntityAdapter anEntityAdapter) {
307       try {
308         return StructuredContentParser.parse(ParameterExpander.evaluateStringExpression(anEntityAdapter, expression));
309       }
310       catch (Throwable t) {
311         throw new RuntimeException(t.getMessage());
312       }
313     }
314   }
315
316   protected class ExpandedField implements EntityAdapterDefinition.CalculatedField {
317     private String expression;
318
319     public ExpandedField(String anExpression) {
320       expression = anExpression;
321     }
322
323     public Object getValue(EntityAdapter anEntityAdapter) {
324       try {
325         return ParameterExpander.expandExpression(anEntityAdapter, expression);
326       }
327       catch (Throwable t) {
328         throw new RuntimeException(t.getMessage());
329       }
330     }
331   }
332
333   protected class EvaluatedField implements EntityAdapterDefinition.CalculatedField {
334     private String expression;
335
336     public EvaluatedField(String anExpression) {
337       expression = anExpression;
338     }
339
340     public Object getValue(EntityAdapter anEntityAdapter) {
341       try {
342         return ParameterExpander.evaluateExpression(anEntityAdapter, expression);
343       }
344       catch (Throwable t) {
345         throw new RuntimeException(t.getMessage());
346       }
347     }
348   }
349
350   protected class ContentToParentField implements EntityAdapterDefinition.CalculatedField {
351     public Object getValue(EntityAdapter anEntityAdapter) {
352       try {
353         logger.debug("ContentToParentField.getValue");
354         return anEntityAdapter.getToOneRelation(
355                     "id="+anEntityAdapter.get("to_content"),
356                     "id",
357                     "content" );
358       }
359       catch (Throwable t) {
360         throw new RuntimeException(t.getMessage());
361       }
362     }
363   }
364
365   protected class ContentToChildrenField implements EntityAdapterDefinition.CalculatedField {
366     public Object getValue(EntityAdapter anEntityAdapter) {
367       try {
368         return anEntityAdapter.getRelation(
369                     "to_content="+anEntityAdapter.get("id"),
370                     "id",
371                     "content" );
372       }
373       catch (Throwable t) {
374         throw new RuntimeException(t.getMessage());
375       }
376     }
377   }
378
379   protected class ContentToLanguageField implements EntityAdapterDefinition.CalculatedField {
380     public Object getValue(EntityAdapter anEntityAdapter) {
381       try {
382         return anEntityAdapter.getToOneRelation(
383                     "id="+anEntityAdapter.get("to_language"),
384                     "id",
385                     "language" );
386       }
387       catch (Throwable t) {
388         throw new RuntimeException(t.getMessage());
389       }
390     }
391   }
392
393   protected class ContentToArticleTypeField implements EntityAdapterDefinition.CalculatedField {
394     public Object getValue(EntityAdapter anEntityAdapter) {
395       try {
396         return anEntityAdapter.getToOneRelation(
397                     "id="+anEntityAdapter.get("to_article_type"),
398                     "id",
399                     "articleType" );
400       }
401       catch (Throwable t) {
402         throw new RuntimeException(t.getMessage());
403       }
404     }
405   }
406
407   protected class MediaToMediaFolderField implements EntityAdapterDefinition.CalculatedField {
408     public Object getValue(EntityAdapter anEntityAdapter) {
409       try {
410         return anEntityAdapter.getToOneRelation(
411                     "id="+anEntityAdapter.get("to_media_folder"),
412                     "id",
413                     "mediaFolder" );
414       }
415       catch (Throwable t) {
416         throw new RuntimeException(t.getMessage());
417       }
418     }
419   }
420
421   protected class ContentToCommentsField implements EntityAdapterDefinition.CalculatedField {
422     private String extracondition;
423     private String order;
424
425     public ContentToCommentsField() {
426       this ( " and is_published='1'", "webdb_create");
427     }
428
429     public ContentToCommentsField(String anExtraCondition, String anOrder) {
430       order = anOrder;
431       extracondition = anExtraCondition;
432     }
433
434     public Object getValue(EntityAdapter anEntityAdapter) {
435       try {
436         return anEntityAdapter.getRelation(
437                     "to_media="+anEntityAdapter.get("id")+" " + extracondition,
438                     order,
439                     "comment" );
440       }
441       catch (Throwable t) {
442         throw new RuntimeException(t.getMessage());
443       }
444     }
445   }
446
447   protected class ContentToTopicsField implements EntityAdapterDefinition.CalculatedField {
448     private String topicCondition;
449     private String topicOrder;
450
451     public ContentToTopicsField() {
452       this(null);
453     }
454
455     public ContentToTopicsField(String aTopicCondition) {
456       this(aTopicCondition, "title");
457     }
458
459     public ContentToTopicsField(String aTopicCondition, String aTopicOrder) {
460       topicCondition = aTopicCondition;
461       topicOrder = aTopicOrder;
462     }
463
464         // TODO rewrite as relational select
465     public Object getValue(EntityAdapter anEntityAdapter) {
466       try {
467         String condition = "exists (select * from content_x_topic where content_id="+anEntityAdapter.get("id")+" and topic_id=id)";
468         if (topicCondition!=null && topicCondition.length()>0)
469           condition = "(" + topicCondition + ") and " + condition;
470
471         return anEntityAdapter.getRelation(
472                     condition,
473                     topicOrder,
474                     "topic" );
475       }
476       catch (Throwable t) {
477         throw new RuntimeException(t.getMessage());
478       }
479     }
480   }
481
482   protected class ContentToMediaField implements EntityAdapterDefinition.CalculatedField {
483     private String definition;
484     private boolean published;
485
486     public ContentToMediaField(String aDefinition, boolean anOnlyPublished) {
487       definition = aDefinition;
488       published = anOnlyPublished;
489     }
490
491     public ContentToMediaField(String aDefinition) {
492       this(aDefinition, true);
493     }
494
495     public Object getValue(EntityAdapter anEntityAdapter) {
496       try {
497                 // TODO rewrite as relational select
498         String condition = "exists (select * from content_x_media where content_id="+anEntityAdapter.get("id")+" and media_id=id)";
499         if (published)
500           condition = "is_published='t' and " + condition;
501         return anEntityAdapter.getRelation(
502            condition,
503           "id",
504           definition);
505       }
506       catch (Throwable t) {
507         throw new RuntimeException(t.getMessage());
508       }
509     }
510   }
511
512   protected class CommentToMediaField implements EntityAdapterDefinition.CalculatedField {
513     private String definition;
514     private boolean published;
515
516     public CommentToMediaField(String aDefinition, boolean anOnlyPublished) {
517       definition = aDefinition;
518       published = anOnlyPublished;
519     }
520
521     public CommentToMediaField(String aDefinition) {
522       this(aDefinition, true);
523     }
524
525     public Object getValue(EntityAdapter anEntityAdapter) {
526       try {
527                 // TODO rewrite as relational select
528         String condition = "exists (select * from comment_x_media where comment_id="+anEntityAdapter.get("id")+" and media_id=id)";
529         if (published)
530           condition = "is_published='t' and " + condition;
531         return anEntityAdapter.getRelation(
532            condition,
533           "id",
534           definition);
535       }
536       catch (Throwable t) {
537         throw new RuntimeException(t.getMessage());
538       }
539     }
540   }
541
542   protected class ContentToIconField implements EntityAdapterDefinition.CalculatedField {
543     public Object getValue(EntityAdapter anEntityAdapter) {
544       EntityAdapter media;
545       Entity mediaType;
546       RewindableIterator iterator;
547       Map result;
548       MirMedia mediaHandler;
549       String tinyIcon;
550       String iconAlt;
551
552       try {
553         iterator = (RewindableIterator) (anEntityAdapter.get("to_uploaded_media"));
554         iterator.rewind();
555
556         tinyIcon = MirGlobal.config().getString("Producer.Icon.TinyText");
557         iconAlt = "Text";
558
559         if (iterator.hasNext()) {
560           media = (EntityAdapter) iterator.next();
561
562           mediaType = ((EntityUploadedMedia) (media.getEntity())).getMediaType();
563           mediaHandler = MediaHelper.getHandler( mediaType );
564
565           if (mediaHandler.isVideo()) {
566             tinyIcon = MirGlobal.config().getString("Producer.Icon.TinyVideo");
567             iconAlt = "Video";
568           }
569           else if (mediaHandler.isAudio()) {
570             tinyIcon = MirGlobal.config().getString("Producer.Icon.TinyAudio");
571             iconAlt = "Audio";
572           }
573           else if (mediaHandler.isImage()) {
574             tinyIcon = MirGlobal.config().getString("Producer.Icon.TinyImage");
575             iconAlt = "Image";
576           }
577           else {
578             tinyIcon = mediaHandler.getTinyIconName();
579             iconAlt = mediaHandler.getIconAltName();
580           }
581
582         }
583       }
584       catch (Throwable t) {
585         logger.error("ContentToIconField: " +t.getMessage());
586         throw new RuntimeException(t.getMessage());
587       }
588
589       result = new HashMap();
590       result.put("tiny_icon", MirGlobal.config().getString("Producer.ImageRoot") + "/" + tinyIcon);
591       result.put("icon_alt", iconAlt);
592
593       return result;
594     }
595   }
596
597   protected class ContentCommentCountField implements EntityAdapterDefinition.CalculatedField {
598     private String extraCondition;
599
600     public ContentCommentCountField(String anExtraCondition) {
601       super();
602
603       extraCondition = anExtraCondition;
604     }
605
606     public Object getValue(EntityAdapter anEntityAdapter) {
607       try {
608         return Integer.toString(
609             DatabaseComment.getInstance().getSize(
610                   "to_media="+anEntityAdapter.get("id")+" " + extraCondition));
611       }
612       catch (Throwable t) {
613         throw new RuntimeException(t.getMessage());
614       }
615     }
616   }
617
618   protected class ContentMediaCountField implements EntityAdapterDefinition.CalculatedField {
619     private String table;
620     private boolean published;
621
622     public ContentMediaCountField(String aTable, boolean anOnlyPublished) {
623       table = aTable;
624       published = anOnlyPublished;
625     }
626
627     public ContentMediaCountField(String aTable) {
628       this(aTable, true);
629     }
630
631     public Object getValue(EntityAdapter anEntityAdapter) {
632       try {
633         String subQuery = "select * from "+table+" where id = media_id";
634         if (published)
635           subQuery = subQuery + " and is_published='t'";
636
637         return Integer.toString(
638             DatabaseContentToMedia.getInstance().getSize(
639                   "exists ("+subQuery+")"));
640       }
641       catch (Throwable t) {
642         throw new RuntimeException(t.getMessage());
643       }
644     }
645   }
646 }