1 | package dbnp.studycapturing |
---|
2 | |
---|
3 | import dbnp.authentication.SecUser |
---|
4 | import dbnp.authentication.AuthenticationService |
---|
5 | |
---|
6 | /** |
---|
7 | * The Template class describes a TemplateEntity template, which is basically an extension of the study capture entities |
---|
8 | * in terms of extra fields (which are described by classes that extend the TemplateField class). |
---|
9 | * Study, Subject, Sample and Event are all TemplateEntities. |
---|
10 | * |
---|
11 | * Within a Template, we have two different types of fields: 'domain fields' and 'template fields'. |
---|
12 | * The domain fields are TemplateFields which are given by the TemplateEntity itself and therefore always present |
---|
13 | * in any instance of that TemplateEntity. They are specified by implementing TemplateEntity.giveDomainFields() |
---|
14 | * The template fields are TemplateFields which are added specifically by the Template. They are specified |
---|
15 | * in the fields property of the Template object which is referenced by the TemplateEntity.template property. |
---|
16 | * |
---|
17 | * Revision information: |
---|
18 | * $Rev: 1264 $ |
---|
19 | * $Author: work@osx.eu $ |
---|
20 | * $Date: 2010-12-14 16:44:23 +0000 (di, 14 dec 2010) $ |
---|
21 | */ |
---|
22 | class Template extends Identity { |
---|
23 | |
---|
24 | /** The name of the template */ |
---|
25 | String name |
---|
26 | |
---|
27 | /** A string describing the template to other users */ |
---|
28 | String description |
---|
29 | |
---|
30 | /** The target TemplateEntity for this template */ |
---|
31 | Class entity |
---|
32 | |
---|
33 | /** The owner of the template. If the owner is not defined, it is a shared/public template */ |
---|
34 | SecUser owner |
---|
35 | |
---|
36 | /** The template fields which are the members of this template. This is a List to preserve the field order */ |
---|
37 | List fields |
---|
38 | |
---|
39 | static hasMany = [fields: TemplateField] |
---|
40 | static mapping = { |
---|
41 | } |
---|
42 | |
---|
43 | // constraints |
---|
44 | static constraints = { |
---|
45 | owner(nullable: true, blank: true) |
---|
46 | description(nullable: true, blank: true) |
---|
47 | |
---|
48 | fields(validator: { fields, obj, errors -> |
---|
49 | // 'obj' refers to the actual Template object |
---|
50 | |
---|
51 | // define a boolean |
---|
52 | def error = false |
---|
53 | |
---|
54 | // iterate through fields |
---|
55 | fields.each { field -> |
---|
56 | // check if the field entity is the same as the template entity |
---|
57 | if (!field.entity.equals(obj.entity)) { |
---|
58 | error = true |
---|
59 | errors.rejectValue( |
---|
60 | 'fields', |
---|
61 | 'templateEntity.entityMismatch', |
---|
62 | [field.name, obj.entity, field.entity] as Object[], |
---|
63 | 'Template field {0} must be of entity {1} and is currently of entity {2}' |
---|
64 | ) |
---|
65 | } |
---|
66 | } |
---|
67 | |
---|
68 | // got an error, or not? |
---|
69 | return (!error) |
---|
70 | }) |
---|
71 | |
---|
72 | // outcommented for now due to bug in Grails / Hibernate |
---|
73 | // see http://jira.codehaus.org/browse/GRAILS-6020 |
---|
74 | // This is to verify that the template name is unique with respect to the parent entity. |
---|
75 | // TODO: this probably has to change in the case of private templates of different users, |
---|
76 | // which can co-exist with the same name. See also TemplateField |
---|
77 | // name(unique:['entity']) |
---|
78 | |
---|
79 | } |
---|
80 | |
---|
81 | public Template() { |
---|
82 | super() |
---|
83 | } |
---|
84 | |
---|
85 | /** |
---|
86 | * Creates a clone of the given other template and also copies its owner |
---|
87 | * |
---|
88 | * @param otherTemplate |
---|
89 | */ |
---|
90 | public Template( Template otherTemplate) { |
---|
91 | this( otherTemplate, otherTemplate.owner ) |
---|
92 | } |
---|
93 | |
---|
94 | /** |
---|
95 | * Creates a clone of the given other template. The currently logged in user |
---|
96 | * is set as the owner |
---|
97 | * @param otherTemplate |
---|
98 | */ |
---|
99 | public Template( Template otherTemplate, SecUser owner ) { |
---|
100 | this() |
---|
101 | |
---|
102 | //authenticationService = new AuthenticationService() |
---|
103 | |
---|
104 | this.name = otherTemplate.name + " (Copy)" |
---|
105 | this.description = otherTemplate.description |
---|
106 | this.entity = otherTemplate.entity |
---|
107 | this.owner = owner |
---|
108 | |
---|
109 | // The fields are copied by reference |
---|
110 | this.fields = [] |
---|
111 | otherTemplate.fields.each { |
---|
112 | this.fields.add( it ) |
---|
113 | } |
---|
114 | } |
---|
115 | |
---|
116 | /** |
---|
117 | * overloaded toString method |
---|
118 | * @return String |
---|
119 | */ |
---|
120 | def String toString() { |
---|
121 | return this.name; |
---|
122 | } |
---|
123 | |
---|
124 | /** |
---|
125 | * Check whether the contents of the other template and the current template are equal. |
---|
126 | * For this check the name, description and owner don't matter. Also, the order of |
---|
127 | * template fields doesn't matter |
---|
128 | * |
---|
129 | * @return true iff this template and the other template are used for the same entity and |
---|
130 | * the template contain the same template fields |
---|
131 | */ |
---|
132 | public boolean contentEquals( Template otherTemplate ) { |
---|
133 | if( otherTemplate == this ) |
---|
134 | return true |
---|
135 | |
---|
136 | if( otherTemplate == null ) |
---|
137 | return false |
---|
138 | |
---|
139 | if( otherTemplate.entity != this.entity ) |
---|
140 | return false |
---|
141 | |
---|
142 | // Check all template fields |
---|
143 | if( otherTemplate.fields?.size() != this.fields?.size() ) |
---|
144 | return false |
---|
145 | |
---|
146 | if( otherTemplate.fields != null && this.fields != null ) { |
---|
147 | for( def field in this.fields ) { |
---|
148 | def fieldFound = false; |
---|
149 | for( def otherField in otherTemplate.fields ) { |
---|
150 | if( otherField.contentEquals( field ) ) { |
---|
151 | fieldFound = true; |
---|
152 | break |
---|
153 | } |
---|
154 | } |
---|
155 | |
---|
156 | if( !fieldFound ) { |
---|
157 | return false |
---|
158 | } |
---|
159 | } |
---|
160 | } |
---|
161 | |
---|
162 | // If all tests pass, the objects are content-equal |
---|
163 | return true |
---|
164 | } |
---|
165 | |
---|
166 | /** |
---|
167 | * Look up the type of a certain template subject field |
---|
168 | * @param String fieldName The name of the template field |
---|
169 | * @return String The type (static member of TemplateFieldType) of the field, or null of the field does not exist |
---|
170 | */ |
---|
171 | def TemplateFieldType getFieldType(String fieldName) { |
---|
172 | def field = fields.find { |
---|
173 | it.name == fieldName |
---|
174 | } |
---|
175 | field?.type |
---|
176 | } |
---|
177 | |
---|
178 | /** |
---|
179 | * get all field of a particular type |
---|
180 | * @param Class fieldType |
---|
181 | * @return Set < TemplateField > |
---|
182 | */ |
---|
183 | def getFieldsByType(TemplateFieldType fieldType) { |
---|
184 | def result = fields.findAll { |
---|
185 | it.type == fieldType |
---|
186 | } |
---|
187 | return result; |
---|
188 | } |
---|
189 | |
---|
190 | /** |
---|
191 | * get all required fields |
---|
192 | * @param Class fieldType |
---|
193 | * @return Set < TemplateField > |
---|
194 | */ |
---|
195 | def getRequiredFields() { |
---|
196 | def result = fields.findAll { |
---|
197 | it.required == true |
---|
198 | } |
---|
199 | return result; |
---|
200 | } |
---|
201 | |
---|
202 | /** |
---|
203 | * get all required fields |
---|
204 | * @param Class fieldType |
---|
205 | * @return Set < TemplateField > |
---|
206 | */ |
---|
207 | def getRequiredFieldsByType(TemplateFieldType fieldType) { |
---|
208 | def result = fields.findAll { |
---|
209 | (it.required == true && it.type == fieldType) |
---|
210 | } |
---|
211 | return result; |
---|
212 | } |
---|
213 | |
---|
214 | /** |
---|
215 | * Checks whether this template is used by any object |
---|
216 | * |
---|
217 | * @returns true iff this template is used by any object, false otherwise |
---|
218 | */ |
---|
219 | def inUse() { |
---|
220 | return (numUses() > 0 ); |
---|
221 | } |
---|
222 | |
---|
223 | /** |
---|
224 | * The number of objects that use this template |
---|
225 | * |
---|
226 | * @returns the number of objects that use this template. |
---|
227 | */ |
---|
228 | def numUses() { |
---|
229 | // This template can only be used in objects of the right entity. Find objects of that |
---|
230 | // entity and see whether they use this method. |
---|
231 | // |
---|
232 | // Unfortunately, due to the grails way of creating classes, we can not use reflection for this |
---|
233 | def elements; |
---|
234 | switch( this.entity ) { |
---|
235 | case Event: |
---|
236 | elements = Event.findAllByTemplate( this ); break; |
---|
237 | case Sample: |
---|
238 | elements = Sample.findAllByTemplate( this ); break; |
---|
239 | case Study: |
---|
240 | elements = Study.findAllByTemplate( this ); break; |
---|
241 | case Subject: |
---|
242 | elements = Subject.findAllByTemplate( this ); break; |
---|
243 | default: |
---|
244 | return 0; |
---|
245 | } |
---|
246 | |
---|
247 | return elements.size(); |
---|
248 | } |
---|
249 | |
---|
250 | /** |
---|
251 | * overloading the findAllByEntity method to make it function as expected |
---|
252 | * @param Class entity (for example: dbnp.studycapturing.Subject) |
---|
253 | * @return ArrayList |
---|
254 | */ |
---|
255 | public static findAllByEntity(java.lang.Class entity) { |
---|
256 | def results = [] |
---|
257 | // 'this' should not work in static context, so taking Template instead of this |
---|
258 | Template.findAll().each() { |
---|
259 | if (entity.equals(it.entity)) { |
---|
260 | results[results.size()] = it |
---|
261 | } |
---|
262 | } |
---|
263 | |
---|
264 | return results |
---|
265 | } |
---|
266 | |
---|
267 | /** |
---|
268 | * Create a new template based on the parsed XML object. |
---|
269 | * |
---|
270 | * @see grails.converters.XML#parse(java.lang.String) |
---|
271 | * @throws IllegalArgumentException |
---|
272 | * @throws ClassNotFoundException |
---|
273 | * |
---|
274 | */ |
---|
275 | public static parse(Object xmlObject, SecUser loggedInUser) { |
---|
276 | def t = new Template(); |
---|
277 | t.name = xmlObject?.name?.text() |
---|
278 | t.description = xmlObject?.description?.text() |
---|
279 | |
---|
280 | // Check whether a correct entity is given. The parseEntity method might |
---|
281 | // throw a ClassNotFoundException, but that is OK, it should be thrown if the class |
---|
282 | // doesn't exist. |
---|
283 | def entity = TemplateEntity.parseEntity( xmlObject.entity?.text() ); |
---|
284 | if( !entity ) { |
---|
285 | throw new Exception( "Incorrect entity given" ); |
---|
286 | } |
---|
287 | |
---|
288 | t.entity = entity |
---|
289 | |
---|
290 | // Set the owner to the currently logged in user |
---|
291 | t.owner = loggedInUser |
---|
292 | |
---|
293 | // Set all template fields |
---|
294 | xmlObject.templateFields.templateField.each { |
---|
295 | def field = TemplateField.parse( it, entity ); |
---|
296 | |
---|
297 | // Check whether a similar field already exists. For that, we search in all |
---|
298 | // template fields with the same name, in order to have as little comparisons |
---|
299 | // as possible |
---|
300 | for( def otherField in TemplateField.findAllByName( field.name ) ) { |
---|
301 | if( field.contentEquals( otherField ) ) { |
---|
302 | field = otherField; |
---|
303 | break; |
---|
304 | } |
---|
305 | } |
---|
306 | |
---|
307 | t.addToFields( field ); |
---|
308 | } |
---|
309 | |
---|
310 | return t |
---|
311 | } |
---|
312 | } |
---|