|
1
27 package olstore.action;
28
29 import java.util.Vector;
30
31 import javax.servlet.http.*;
32 import javax.naming.Context;
33 import javax.naming.InitialContext;
34
35 import olstore.session.helper.ItemHelperLocal;
36 import olstore.session.helper.ItemHelperLocalHome;
37
38 import olstore.dto.ItemValue;
39 import olstore.dto.PictureValue;
40 import olstore.dto.PropertyValue;
41 import olstore.form.CreateItemForm;
42 import olstore.framework.EJBHomeFactory;
43
44 import org.apache.struts.action.*;
45 import org.apache.commons.beanutils.BeanUtils;
46
47
48 public class ItemCreateAction extends DemoBaseAction {
49
50
54 public ActionForward execute ( ActionMapping mapping,
55 ActionForm form,
56 HttpServletRequest request,
57 HttpServletResponse response
58 ) throws Exception {
59
60 try {
62 String action = ((CreateItemForm)form).getSubmitType();
63 if ( action == null || action.equals("") ) {
64 String itemId = ((CreateItemForm)form).getItemId();
65 if ( itemId != null && ! itemId.equals("") ) {
66 loadItem ( mapping, form, request, response );
67 } else {
68 CreateNewItem ( mapping, form, request, response );
69 }
70 } else if ( action.equals ( "updateProperties" ) ) {
71 updateProperties ( mapping, form, request, response );
72 } else if ( action.equals ( "updatePictures" ) ) {
73 updatePictures ( mapping, form, request, response );
74 } else if ( action.equals ( "changeType" ) ) {
75 changeType ( mapping, form, request, response );
76 } else if ( action.equals ( "saveItem" ) ) {
77 return mapping.findForward ( "saveItem" );
78 }
79
80 return mapping.findForward ( "updateItem" );
81
82
83 }
84
85 catch (NumberFormatException n){
86 ActionErrors errors = new ActionErrors();
87 errors.add ("error", new ActionError("errors.not.int", n.getMessage() ));
88 saveErrors(request,errors);
89 return (new ActionForward(mapping.getInput()));
90 }
91
92 catch ( Exception e ) {
93 ActionErrors errors = new ActionErrors();
95 errors.add("error", new ActionError("errors.item.load", e.getMessage() ));
96 saveErrors(request, errors);
97 return (new ActionForward(mapping.getInput()));
99 }
100
101 }
102
103
104 public void CreateNewItem ( ActionMapping mapping,
105 ActionForm form,
106 HttpServletRequest request,
107 HttpServletResponse response
108 ) throws Exception {
109
110 Context context = new InitialContext();
112 String type = (String) context.lookup ( "java:comp/env/DEFAULT_TYPE" );
113
114 ((CreateItemForm)form).getPic ( 0 );
118
119 EJBHomeFactory factory = EJBHomeFactory.getInstance();
121 ItemHelperLocalHome itemHelperHome = (ItemHelperLocalHome) factory.getLocalHome ( EJBHomeFactory.ITEM_HELPER );
122 ItemHelperLocal itemHelper = itemHelperHome.create();
123 Vector propValueArr = itemHelper.getPropertiesForType ( type );
124
125 ((CreateItemForm)form).setProperties ( propValueArr );
126 }
127
128
129
135 public void updateProperties ( ActionMapping mapping,
136 ActionForm form,
137 HttpServletRequest request,
138 HttpServletResponse response
139 ) throws Exception {
140
141 Vector propValueArr = ((CreateItemForm)form).getProperties();
142 String numPropsStr = ((CreateItemForm)form).getNumProps();
143 int numProps = Integer.parseInt ( numPropsStr );
144
145
146
147 if ( numProps < propValueArr.size() ) {
150 for ( int i = propValueArr.size() -1 ; i > numProps - 1 ; i-- ) {
151 propValueArr.remove ( i );
152 }
153 }
154
155 if ( numProps > propValueArr.size() ) {
157 for ( int i = propValueArr.size() ; i < numProps ; i++ ) {
158 propValueArr.add ( new PropertyValue() );
159 }
160 }
161
162 ((CreateItemForm)form).setProperties ( propValueArr ) ;
163
164 }
165
166
172 public void updatePictures ( ActionMapping mapping,
173 ActionForm form,
174 HttpServletRequest request,
175 HttpServletResponse response
176 ) throws Exception {
177
178 Vector propValueArr = ((CreateItemForm)form).getPictures();
179 String numPicsStr = ((CreateItemForm)form).getNumPics();
180 int numPics = Integer.parseInt ( numPicsStr );
181
182 if (numPics<=0){
183 throw new Exception("The number of Picture Fields must be a postive interger") ;
187 }
188
189 if ( numPics < propValueArr.size() ) {
192 for ( int i = propValueArr.size() -1 ; i > numPics - 1 ; i-- ) {
193 propValueArr.remove ( i );
194 }
195 }
196
197 if ( numPics > propValueArr.size() ) {
199 for ( int i = propValueArr.size() ; i < numPics ; i++ ) {
200 propValueArr.add ( new PictureValue() );
201 }
202 }
203
204 ((CreateItemForm)form).setPictures ( propValueArr ) ;
205
206 }
207
208
209
214 public void changeType ( ActionMapping mapping,
215 ActionForm form,
216 HttpServletRequest request,
217 HttpServletResponse response
218 ) throws Exception {
219
220 CreateItemForm createForm = (CreateItemForm)form;
221 String newType = createForm.getTypeId();
222 EJBHomeFactory factory = EJBHomeFactory.getInstance();
223 ItemHelperLocalHome itemHelperHome = (ItemHelperLocalHome) factory.getLocalHome ( EJBHomeFactory.ITEM_HELPER );
224 ItemHelperLocal helperLocal = itemHelperHome.create();
225 Vector newProps = helperLocal.getPropertiesForType ( newType );
226
227 int i = 0;
229 for (; i < newProps.size() ; i++ ) {
230 PropertyValue prop = createForm.getProp ( i );
231 prop.setName ( ((PropertyValue)newProps.get(i)).getName() );
232 }
233
234 Vector oldProps = createForm.getProperties();
236 int size = oldProps.size();
237 for ( int j=0; j < size - i; j++ ) {
238 oldProps.remove ( oldProps.size() - 1 );
239 }
240 }
241
242
243 public void loadItem ( ActionMapping mapping,
244 ActionForm form,
245 HttpServletRequest request,
246 HttpServletResponse response
247 ) throws Exception {
248
249 CreateItemForm createForm = (CreateItemForm)form;
250 String itemId = createForm.getItemId();
251 EJBHomeFactory factory = EJBHomeFactory.getInstance();
252 ItemHelperLocalHome itemHelperHome = (ItemHelperLocalHome) factory.getLocalHome ( EJBHomeFactory.ITEM_HELPER );
253 ItemHelperLocal itemHelper = itemHelperHome.create();
254
255 ItemValue itemVal = itemHelper.getItemValueForId ( itemId );
256 BeanUtils.copyProperties ( createForm, itemVal );
257 }
258
259
260 }
261 |
Popular Tags |
Java API By Example, From Geeks To Geeks.