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Java > Open Source Codes > com > jcorporate > expresso > services > controller > dbmaint > SearchList


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64
65 package com.jcorporate.expresso.services.controller.dbmaint;
66
67 import com.jcorporate.expresso.core.controller.ControllerException;
68 import com.jcorporate.expresso.core.controller.ControllerRequest;
69 import com.jcorporate.expresso.core.controller.ControllerResponse;
70 import com.jcorporate.expresso.core.controller.ErrorCollection;
71 import com.jcorporate.expresso.core.controller.NonHandleableException;
72 import com.jcorporate.expresso.core.dataobjects.DataObject;
73 import com.jcorporate.expresso.core.dataobjects.DataObjectMetaData;
74 import com.jcorporate.expresso.core.db.DBException;
75 import com.jcorporate.expresso.core.misc.StringUtil;
76 import com.jcorporate.expresso.kernel.util.FastStringBuffer;
77 import com.jcorporate.expresso.services.controller.ui.DefaultAutoElement;
78 import org.apache.log4j.Logger;
79
80 import java.util.Iterator JavaDoc;
81
82
83 /**
84  * Processes the data passed via a standard form from SEARCH.
85  * This class requires a match on all specified fields of a DBObject
86  * for a successful outcome. SEARCHsearch can be extended
87  * to enabling a more restrictive search on only one or
88  * two fields e.g. a foreign key field
89  *
90  * @author Michael Nash, contributions by Kevin King
91  * @version $Revision: 1.17 $ $Date: 2004/11/17 20:48:17 $
92  */
93 public class SearchList
94         extends ListBase {
95     private static Logger log = Logger.getLogger(SearchList.class);
96
97     public SearchList() {
98
99     }
100
101     /**
102      * Constructor
103      *
104      * @param code The name of the state.
105      * @param descrip The friendly name of the state
106      */
107     public SearchList(String JavaDoc code, String JavaDoc descrip) {
108         super(code, descrip);
109     } /* SearchList(String, String) */
110
111     /**
112      * Perform the actions of this state.
113      *
114      * @param req The <code>ControllerRequest</code> object
115      * @param res The <code>ControllerResponse</code> object
116      */
117     public void run(ControllerRequest req, ControllerResponse res)
118             throws NonHandleableException, ControllerException {
119         super.run(req, res);
120
121         DataObject myDBObj = this.getDataObject();
122         DataObjectMetaData metadata = myDBObj.getMetaData();
123
124         ErrorCollection ee = new ErrorCollection();
125
126         myDBObj = DefaultAutoElement.getAutoControllerElement().parseDBObject(req, myDBObj, ee, false);
127
128         showNext = true;
129         showPrev = false;
130
131         String JavaDoc oneFieldName = null;
132         String JavaDoc fieldValue = null;
133         FastStringBuffer newFields = FastStringBuffer.getInstance();
134
135         try {
136             if (!StringUtil.notNull(getFieldsParam()).equals("")) {
137                 newFields.append(getFieldsParam());
138                 newFields.append("|");
139             }
140             try {
141
142                 /* Build the "search" param for subsequent pages, if any */
143                 for (Iterator JavaDoc e = myDBObj.getMetaData().getFieldListArray().iterator(); e.hasNext();) {
144                     oneFieldName = (String JavaDoc) e.next();
145
146                     if (!metadata.isVirtual(oneFieldName)) {
147                         fieldValue = StringUtil.notNull(myDBObj.getDataField(oneFieldName).asString());
148
149                         if (!fieldValue.equals("")) {
150                             if (metadata.getAttribute(oneFieldName, "checkbox") != null
151                                     && myDBObj.getDataField(oneFieldName).asBoolean().booleanValue() == false) {
152
153                                 //
154 //To actually get searches working, we only search
155 //on a checkbox value if it is checked, otherwise
156 //we ignore it. It's not the best, but otherwise
157 //folks don't get search results at all.
158 //
159 if (log.isDebugEnabled()) {
160                                     log.debug("Received false checkbox. " +
161                                             " Skipping value and resetting to false");
162                                 }
163                                 myDBObj.set(oneFieldName, null);
164                             } else {
165                                 newFields.append(oneFieldName);
166                                 newFields.append("|");
167                                 newFields.append(fieldValue);
168                                 newFields.append("|");
169                             }
170                         }
171                     }
172                 }
173
174                 setSearchParam(newFields.toString());
175                 showList();
176             } catch (DBException de) {
177                 ee.addError(de);
178                 res.saveErrors(ee);
179                 transition("Search", req, res);
180                 return;
181             } catch (Throwable JavaDoc t) {
182                 log.error("Error listing fields", t);
183                 throw new ControllerException("Error Listing Fields", t);
184             }
185         } finally {
186             newFields.release();
187         }
188     } /* run() */
189 }
190
191 /* SearchList */
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