|
1
16 package com.blandware.atleap.common.util;
17
18 import org.apache.commons.beanutils.ConversionException;
19 import org.apache.commons.beanutils.Converter;
20 import org.apache.commons.lang.StringUtils;
21
22 import java.text.DateFormat  ;
23 import java.text.SimpleDateFormat ;
24 import java.util.Date ;
25 import java.util.Locale ;
26
27
28
43 public class CommonConverter implements Converter {
44
45 protected Locale locale;
46 protected DateFormat formatter;
47
48
51 public CommonConverter() {
52 this(Locale.getDefault());
53 }
54
55
60 public CommonConverter(Locale locale) {
61 this.locale = locale;
62 this.formatter = new SimpleDateFormat (DateUtil.getDatePattern(locale), locale);
63 }
64
65
76 public Object convert(Class type, Object value) {
77 if ( value == null ) {
78 return null;
79 } else if ( type == Date .class ) {
80 return convertToDate(type, value);
81 } else if ( type == String .class ) {
82 return convertToString(type, value);
83 } else if ( type == Object .class ) {
84 return convertToObject(type, value);
85 }
86
87 throw new ConversionException("Could not convert " +
88 value.getClass().getName() + " to " +
89 type.getName());
90 }
91
92
99 protected Object convertToDate(Class type, Object value) {
100 if ( value instanceof Date ) {
101 return value;
102 }
103
104 if ( value instanceof String ) {
105 try {
106 if ( StringUtils.isEmpty(value.toString()) ) {
107 return null;
108 }
109
110 return formatter.parse((String ) value);
111 } catch ( Exception pe ) {
112 throw new ConversionException("Error converting String to Date");
113 }
114 }
115
116 throw new ConversionException("Could not convert " +
117 value.getClass().getName() + " to " +
118 type.getName());
119 }
120
121
128 protected Object convertToString(Class type, Object value) {
129 if ( value instanceof Date ) {
130 try {
131 return formatter.format(value);
132 } catch ( Exception e ) {
133 throw new ConversionException("Error converting Date to String");
134 }
135 }
136
137 return value.toString();
138 }
139
140
147 protected Object convertToObject(Class type, Object value) {
148 return value;
149 }
150
151 }
152 |
Popular Tags |
Java API By Example, From Geeks To Geeks.