001: /*
002: * Copyright (c) 2001 - 2005 ivata limited.
003: * All rights reserved.
004: * -----------------------------------------------------------------------------
005: * ivata masks may be redistributed under the GNU General Public
006: * License as published by the Free Software Foundation;
007: * version 2 of the License.
008: *
009: * These programs are free software; you can redistribute them and/or
010: * modify them under the terms of the GNU General Public License
011: * as published by the Free Software Foundation; version 2 of the License.
012: *
013: * These programs are distributed in the hope that they will be useful,
014: * but WITHOUT ANY WARRANTY; without even the implied warranty of
015: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
016: *
017: * See the GNU General Public License in the file LICENSE.txt for more
018: * details.
019: *
020: * If you would like a copy of the GNU General Public License write to
021: *
022: * Free Software Foundation, Inc.
023: * 59 Temple Place - Suite 330
024: * Boston, MA 02111-1307, USA.
025: *
026: *
027: * To arrange commercial support and licensing, contact ivata at
028: * http://www.ivata.com/contact.jsp
029: * -----------------------------------------------------------------------------
030: * $Log: ClassFieldValueConvertor.java,v $
031: * Revision 1.7 2005/10/11 18:55:29 colinmacleod
032: * Fixed some checkstyle and javadoc issues.
033: *
034: * Revision 1.6 2005/10/02 14:06:32 colinmacleod
035: * Added/improved log4j logging.
036: *
037: * Revision 1.5 2005/09/14 12:51:52 colinmacleod
038: * Added serialVersionUID.
039: *
040: * Revision 1.4 2005/04/11 12:27:01 colinmacleod
041: * Added preliminary support for filters.
042: * Added FieldValueConvertor factor interface
043: * to split off value convertors for reuse.
044: *
045: * Revision 1.3 2005/04/09 18:04:14 colinmacleod
046: * Changed copyright text to GPL v2 explicitly.
047: *
048: * Revision 1.2 2005/01/06 22:13:21 colinmacleod
049: * Moved up a version number.
050: * Changed copyright notices to 2005.
051: * Updated the documentation:
052: * - started working on multiproject:site docu.
053: * - changed the logo.
054: * Added checkstyle and fixed LOADS of style issues.
055: * Added separate thirdparty subproject.
056: * Added struts (in web), util and webgui (in webtheme) from ivata op.
057: *
058: * Revision 1.1 2004/12/29 20:07:07 colinmacleod
059: * Renamed subproject masks to mask.
060: *
061: * Revision 1.1.1.1 2004/05/16 20:40:32 colinmacleod
062: * Ready for 0.1 release
063: * -----------------------------------------------------------------------------
064: */
065: package com.ivata.mask.field;
066:
067: import org.apache.log4j.Logger;
068:
069: /**
070: * <p>
071: * Convert an object representing a class.
072: * </p>
073: *
074: * @since ivata masks 0.1 (2004-05-14)
075: * @author Colin MacLeod
076: * <a href='mailto:colin.macleod@ivata.com'>colin.macleod@ivata.com</a>
077: * @version $Revision: 1.7 $
078: */
079: public class ClassFieldValueConvertor extends FieldValueConvertor {
080: /**
081: * Logger for this class.
082: */
083: private static final Logger logger = Logger
084: .getLogger(ClassFieldValueConvertor.class);
085:
086: /**
087: * Serialization version (for <code>Serializable</code> interface).
088: */
089: private static final long serialVersionUID = 1L;
090:
091: /**
092: * <p>
093: * Convert an object representing a class to a string. This returns the full
094: * class name
095: * </p>
096: *
097: * @param objectValue
098: * object to be converted.
099: * @return string equivalent of the object provided.
100: * @see com.ivata.mask.web.field.FieldValueConvertor#toString
101: */
102: protected String toString(final Object objectValue) {
103: if (logger.isDebugEnabled()) {
104: logger.debug("toString(Object objectValue = " + objectValue
105: + ") - start");
106: }
107:
108: String returnString = ((Class) objectValue).getName();
109: if (logger.isDebugEnabled()) {
110: logger.debug("toString(Object) - end - return value = "
111: + returnString);
112: }
113: return returnString;
114: }
115:
116: /**
117: * <p>
118: * Convert a class value from a string representing its name.
119: * </p>
120: *
121: * @param propertyClass
122: * exact class to be converted to.
123: * @param stringValue
124: * value to be converted.
125: * @return valid class converted from a string.
126: * @see com.ivata.mask.field.FieldValueConvertor#convertFromString
127: */
128: public Object convertFromString(final Class propertyClass,
129: final String stringValue) {
130: if (logger.isDebugEnabled()) {
131: logger.debug("convertFromString(Class propertyClass = "
132: + propertyClass + ", String stringValue = "
133: + stringValue + ") - start");
134: }
135:
136: try {
137: Object returnObject = Class.forName(stringValue);
138: if (logger.isDebugEnabled()) {
139: logger
140: .debug("convertFromString - end - return value = "
141: + returnObject);
142: }
143: return returnObject;
144: } catch (ClassNotFoundException e) {
145: logger.error("convertFromString(Class, String)", e);
146:
147: throw new FieldValueException(e);
148: }
149: }
150: }
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