2 * Copyright (C) 2001, 2002 The Mir-coders group
4 * This file is part of Mir.
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.
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.
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
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.
32 import java.util.HashMap;
33 import java.util.Iterator;
34 import java.util.List;
37 import mir.config.MirPropertiesConfiguration;
38 import mir.log.LoggerWrapper;
39 import mir.storage.Database;
40 import mir.storage.StorageObjectExc;
41 import mir.storage.StorageObjectFailure;
44 * Base class the entities are derived from. Provides base functionality of
47 * @version $Id: AbstractEntity.java,v 1.8.2.6 2005/02/10 16:22:30 rhindes Exp $
50 public class AbstractEntity implements Entity {
51 protected static MirPropertiesConfiguration configuration = MirPropertiesConfiguration.instance();
54 protected Database database;
55 protected LoggerWrapper logger;
57 public AbstractEntity() {
58 logger = new LoggerWrapper("Entity");
60 values = new HashMap();
63 public void setStorage(Database aDatabase) {
68 public void setFieldValues(Map aMap) {
70 Iterator i = aMap.entrySet().iterator();
73 Map.Entry entry = (Map.Entry) i.next();
75 setFieldValue( (String) entry.getKey(), (String) entry.getValue());
82 public String getId() {
83 return getFieldValue(database.getIdFieldName());
87 public void setId(String id) {
88 setFieldValue(database.getIdFieldName(), id);
92 public String insert() throws StorageObjectExc {
93 logger.debug("Entity: trying to insert ...");
95 if (database != null) {
96 return database.insert(this);
98 throw new StorageObjectExc("database == null!");
102 public void update() throws StorageObjectFailure {
103 database.update(this);
107 public String getFieldValue(String aFieldName) {
108 String returnValue = null;
110 if (aFieldName != null) {
111 returnValue = (String) values.get(aFieldName);
117 public boolean hasFieldValue(String aFieldName) {
118 return values.containsKey(aFieldName);
122 * Sets the value for a field. Issues a log message if the field name
123 * supplied was not found in the Entity.
124 * @param theProp The field name whose value has to be set
125 * @param theValue The new value of the field
126 * @exception StorageObjectFailure
128 public void setFieldValue(String theProp, String theValue) throws StorageObjectFailure {
129 if (hasField(theProp))
130 values.put(theProp, theValue);
132 logger.warn("Entity.setFieldValue: Property not found: " + theProp + " (" + theValue + ")");
137 * Returns the field names of the Entity
139 public List getFieldNames() throws StorageObjectFailure {
140 return database.getFieldNames();
143 /** Returns whether fieldName is a valid field name of this Entity.
145 * @return true in case fieldName is a field name, else false.
146 * @exception StorageObjectFailure
148 public boolean hasField(String fieldName) throws StorageObjectFailure {
149 return getFieldNames().contains(fieldName);