1 Package Body hr_tpc_upd as
2 /* $Header: hrtpcrhi.pkb 115.0 2004/01/09 04:37 vkarandi noship $ */
3 --
4 -- ----------------------------------------------------------------------------
5 -- | Private Global Definitions |
6 -- ----------------------------------------------------------------------------
7 --
8 g_package varchar2(33) := ' hr_tpc_upd.'; -- Global package name
9 --
10 -- ----------------------------------------------------------------------------
11 -- |------------------------------< update_dml >------------------------------|
12 -- ----------------------------------------------------------------------------
13 -- {Start Of Comments}
14 --
15 -- Description:
16 -- This procedure controls the actual dml update logic. The processing of
17 -- this procedure is:
18 -- 1) Increment the object_version_number by 1 if the object_version_number
19 -- is defined as an attribute for this entity.
20 -- 2) To set and unset the g_api_dml status as required (as we are about to
21 -- perform dml).
22 -- 3) To update the specified row in the schema using the primary key in
23 -- the predicates.
24 -- 4) To trap any constraint violations that may have occurred.
25 -- 5) To raise any other errors.
26 --
27 -- Prerequisites:
28 -- This is an internal private procedure which must be called from the upd
29 -- procedure.
30 --
31 -- In Parameters:
32 -- A Pl/Sql record structre.
33 --
34 -- Post Success:
35 -- The specified row will be updated in the schema.
36 --
37 -- Post Failure:
38 -- On the update dml failure it is important to note that we always reset the
39 -- g_api_dml status to false.
40 -- If a check, unique or parent integrity constraint violation is raised the
41 -- constraint_error procedure will be called.
42 -- If any other error is reported, the error will be raised after the
43 -- g_api_dml status is reset.
44 --
45 -- Developer Implementation Notes:
46 -- The update 'set' attribute list should be modified if any of your
47 -- attributes are not updateable.
48 --
49 -- Access Status:
50 -- Internal Row Handler Use Only.
51 --
52 -- {End Of Comments}
53 -- ----------------------------------------------------------------------------
54 Procedure update_dml
55 (p_rec in out nocopy hr_tpc_shd.g_rec_type
56 ) is
57 --
58 l_proc varchar2(72) := g_package||'update_dml';
59 --
60 Begin
61 hr_utility.set_location('Entering:'||l_proc, 5);
62 --
63 -- Increment the object version
64 p_rec.object_version_number := p_rec.object_version_number + 1;
65 --
66 --
67 --
68 -- Update the hr_ki_topics Row
69 --
70 update hr_ki_topics
71 set
72 topic_id = p_rec.topic_id
73 ,topic_key = p_rec.topic_key
74 ,handler = p_rec.handler
75 ,object_version_number = p_rec.object_version_number
76 where topic_id = p_rec.topic_id;
77 --
78 --
79 --
80 hr_utility.set_location(' Leaving:'||l_proc, 10);
81 --
82 Exception
83 When hr_api.check_integrity_violated Then
84 -- A check constraint has been violated
85 --
86 hr_tpc_shd.constraint_error
87 (p_constraint_name => hr_api.strip_constraint_name(SQLERRM));
88 When hr_api.parent_integrity_violated Then
89 -- Parent integrity has been violated
90 --
91 hr_tpc_shd.constraint_error
92 (p_constraint_name => hr_api.strip_constraint_name(SQLERRM));
93 When hr_api.unique_integrity_violated Then
94 -- Unique integrity has been violated
95 --
96 hr_tpc_shd.constraint_error
97 (p_constraint_name => hr_api.strip_constraint_name(SQLERRM));
98 When Others Then
99 --
100 Raise;
101 End update_dml;
102 --
103 -- ----------------------------------------------------------------------------
104 -- |------------------------------< pre_update >------------------------------|
105 -- ----------------------------------------------------------------------------
106 -- {Start Of Comments}
107 --
108 -- Description:
109 -- This private procedure contains any processing which is required before
110 -- the update dml.
111 --
112 -- Prerequisites:
113 -- This is an internal procedure which is called from the upd procedure.
114 --
115 -- In Parameters:
116 -- A Pl/Sql record structure.
117 --
118 -- Post Success:
119 -- Processing continues.
120 --
121 -- Post Failure:
122 -- If an error has occurred, an error message and exception wil be raised
123 -- but not handled.
124 --
125 -- Developer Implementation Notes:
126 -- Any pre-processing required before the update dml is issued should be
127 -- coded within this procedure. It is important to note that any 3rd party
128 -- maintenance should be reviewed before placing in this procedure.
129 --
130 -- Access Status:
131 -- Internal Row Handler Use Only.
132 --
133 -- {End Of Comments}
134 -- ----------------------------------------------------------------------------
135 Procedure pre_update
136 (p_rec in hr_tpc_shd.g_rec_type
137 ) is
138 --
139 l_proc varchar2(72) := g_package||'pre_update';
140 --
141 Begin
142 hr_utility.set_location('Entering:'||l_proc, 5);
143 --
144 hr_utility.set_location(' Leaving:'||l_proc, 10);
145 End pre_update;
146 --
147 -- ----------------------------------------------------------------------------
148 -- |-----------------------------< post_update >------------------------------|
149 -- ----------------------------------------------------------------------------
150 -- {Start Of Comments}
151 --
152 -- Description:
153 -- This private procedure contains any processing which is required after
154 -- the update dml.
155 --
156 -- Prerequisites:
157 -- This is an internal procedure which is called from the upd procedure.
158 --
159 -- In Parameters:
160 -- A Pl/Sql record structure.
161 --
162 -- Post Success:
163 -- Processing continues.
164 --
165 -- Post Failure:
166 -- If an error has occurred, an error message and exception will be raised
167 -- but not handled.
168 --
169 -- Developer Implementation Notes:
170 -- Any post-processing required after the update dml is issued should be
171 -- coded within this procedure. It is important to note that any 3rd party
172 -- maintenance should be reviewed before placing in this procedure.
173 --
174 -- Access Status:
175 -- Internal Row Handler Use Only.
176 --
177 -- {End Of Comments}
178 -- ----------------------------------------------------------------------------
179 Procedure post_update
180 (p_rec in hr_tpc_shd.g_rec_type
181 ) is
182 --
183 l_proc varchar2(72) := g_package||'post_update';
184 --
185 Begin
186 hr_utility.set_location('Entering:'||l_proc, 5);
187 begin
188 --
189 hr_tpc_rku.after_update
190 (p_topic_id
191 => p_rec.topic_id
192 ,p_handler
193 => p_rec.handler
194 ,p_object_version_number
195 => p_rec.object_version_number
196 ,p_topic_key_o
197 => hr_tpc_shd.g_old_rec.topic_key
198 ,p_handler_o
199 => hr_tpc_shd.g_old_rec.handler
200 ,p_object_version_number_o
201 => hr_tpc_shd.g_old_rec.object_version_number
202 );
203 --
204 exception
205 --
206 when hr_api.cannot_find_prog_unit then
207 --
208 hr_api.cannot_find_prog_unit_error
209 (p_module_name => 'HR_KI_TOPICS'
210 ,p_hook_type => 'AU');
211 --
212 end;
213 --
214 hr_utility.set_location(' Leaving:'||l_proc, 10);
215 End post_update;
216 --
217 -- ----------------------------------------------------------------------------
218 -- |-----------------------------< convert_defs >-----------------------------|
219 -- ----------------------------------------------------------------------------
220 -- {Start Of Comments}
221 --
222 -- Description:
223 -- The Convert_Defs procedure has one very important function:
224 -- It must return the record structure for the row with all system defaulted
225 -- values converted into its corresponding parameter value for update. When
226 -- we attempt to update a row through the Upd process , certain
227 -- parameters can be defaulted which enables flexibility in the calling of
228 -- the upd process (e.g. only attributes which need to be updated need to be
229 -- specified). For the upd process to determine which attributes
230 -- have NOT been specified we need to check if the parameter has a reserved
231 -- system default value. Therefore, for all parameters which have a
232 -- corresponding reserved system default mechanism specified we need to
233 -- check if a system default is being used. If a system default is being
234 -- used then we convert the defaulted value into its corresponding attribute
235 -- value held in the g_old_rec data structure.
236 --
237 -- Prerequisites:
238 -- This private function can only be called from the upd process.
239 --
240 -- In Parameters:
241 -- A Pl/Sql record structure.
242 --
243 -- Post Success:
244 -- The record structure will be returned with all system defaulted parameter
245 -- values converted into its current row attribute value.
246 --
247 -- Post Failure:
248 -- No direct error handling is required within this function. Any possible
249 -- errors within this procedure will be a PL/SQL value error due to
250 -- conversion of datatypes or data lengths.
251 --
252 -- Developer Implementation Notes:
253 -- None.
254 --
255 -- Access Status:
256 -- Internal Row Handler Use Only.
257 --
258 -- {End Of Comments}
259 -- ----------------------------------------------------------------------------
260 Procedure convert_defs
261 (p_rec in out nocopy hr_tpc_shd.g_rec_type
262 ) is
263 --
264 Begin
265 --
266 -- We must now examine each argument value in the
267 -- p_rec plsql record structure
268 -- to see if a system default is being used. If a system default
269 -- is being used then we must set to the 'current' argument value.
270 --
271 If (p_rec.topic_key = hr_api.g_varchar2) then
272 p_rec.topic_key :=
273 hr_tpc_shd.g_old_rec.topic_key;
274 End If;
275 If (p_rec.handler = hr_api.g_varchar2) then
276 p_rec.handler :=
277 hr_tpc_shd.g_old_rec.handler;
278 End If;
279 --
280 End convert_defs;
281 --
282 -- ----------------------------------------------------------------------------
283 -- |---------------------------------< upd >----------------------------------|
284 -- ----------------------------------------------------------------------------
285 Procedure upd
286 (p_rec in out nocopy hr_tpc_shd.g_rec_type
287 ) is
288 --
289 l_proc varchar2(72) := g_package||'upd';
290 --
291 Begin
292 hr_utility.set_location('Entering:'||l_proc, 5);
293 --
294 -- We must lock the row which we need to update.
295 --
296 hr_tpc_shd.lck
297 (p_rec.topic_id
298 ,p_rec.object_version_number
299 );
300 --
301 -- 1. During an update system defaults are used to determine if
302 -- arguments have been defaulted or not. We must therefore
303 -- derive the full record structure values to be updated.
304 --
305 -- 2. Call the supporting update validate operations.
306 --
307 convert_defs(p_rec);
308 hr_tpc_bus.update_validate
309 (p_rec
310 );
311 --
312 -- Call to raise any errors on multi-message list
313 hr_multi_message.end_validation_set;
314 --
315 -- Call the supporting pre-update operation
316 --
317 hr_tpc_upd.pre_update(p_rec);
318 --
319 -- Update the row.
320 --
321 hr_tpc_upd.update_dml(p_rec);
322 --
323 -- Call the supporting post-update operation
324 --
325 hr_tpc_upd.post_update
326 (p_rec
327 );
328 --
329 -- Call to raise any errors on multi-message list
330 hr_multi_message.end_validation_set;
331 End upd;
332 --
333 -- ----------------------------------------------------------------------------
334 -- |---------------------------------< upd >----------------------------------|
335 -- ----------------------------------------------------------------------------
336 Procedure upd
337 (p_topic_id in number
338 ,p_object_version_number in out nocopy number
339 ,p_handler in varchar2 default hr_api.g_varchar2
340 ) is
341 --
342 l_rec hr_tpc_shd.g_rec_type;
343 l_proc varchar2(72) := g_package||'upd';
344 --
345 Begin
346 hr_utility.set_location('Entering:'||l_proc, 5);
347 --
348 -- Call conversion function to turn arguments into the
349 -- l_rec structure.
350 --
351 l_rec :=
352 hr_tpc_shd.convert_args
353 (p_topic_id
354 ,hr_api.g_varchar2
355 ,p_handler
356 ,p_object_version_number
357 );
358 --
359 -- Having converted the arguments into the
360 -- plsql record structure we call the corresponding record
361 -- business process.
362 --
363 hr_tpc_upd.upd
364 (l_rec
365 );
366 p_object_version_number := l_rec.object_version_number;
367 --
368 hr_utility.set_location(' Leaving:'||l_proc, 10);
369 End upd;
370 --
371 end hr_tpc_upd;
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