The following forum message was posted by at
http://sourceforge.net/projects/displaytag/forums/forum/249317/topic/4581855:
To fulfill The Artistic License requirements I would like to share changes which
have been made by Sentaca company to displaytag-1.2.
In TableProperties#getInstance() just right before return:
[code]
TableProperties props = (TableProperties) prototypes.get(locale);
if (props == null) {
TableProperties lprops = new TableProperties(locale);
prototypes.put(locale, lprops);
props = lprops;
}
/*
* modified to override messages with messages from spring message source
*/
if (request != null) {
WebApplicationContext webApplicationContext =
RequestContextUtils.getWebApplicationContext(request);
MessageSource messageSource;
if (webApplicationContext.containsBean(BEAN_NAME_MSM_MESSAGESOURCE)) {
messageSource = (MessageSource)
webApplicationContext.getBean(BEAN_NAME_MSM_MESSAGESOURCE);
// rewrite values for existing keys from spring message source
Set<Object> keySet = props.properties.keySet();
for (Object object : keySet) {
String key = (String) object;
try {
String message = messageSource.getMessage(key, null, locale);
// some properties should not be overriden by keys
if (!blackList.contains(key) || !key.equals(message)) {
props.properties.put(key, message);
}
} catch (NoSuchMessageException e) {
log.warn("There is problem with dispaytag property " + key);
}
}
} else {
log.warn("Bean 'displaytagMessageSource' does not exist");
}
}
[/code]
and we defined blackList as:
[code]
/**
* Hardcoded black list to prevent setting keys as most important
* configuration properties
*/
private final static List<String> blackList
= Arrays.asList("factory.requestHelper", "factory.decorator",
"locale.provider", "locale.resolver", "basic.empty.showtable",
"basic.show.header", "sort.amount",
"export.amount", "export.decorated", "paging.banner.group_size",
"paging.banner.placement", "css.tr.even",
"css.tr.odd", "css.th.sorted", "css.th.ascending", "css.th.descending",
"css.table", "css.th.sortable",
"export.types", "export.csv.class", "export.excel.class",
"export.xml.class",
"export.pdf.class", "export.csv",
"export.csv.label", "export.csv.include_header", "export.csv.filename",
"export.excel", "export.excel.label",
"export.excel.include_header", "export.excel.filename", "export.xml",
"export.xml.label", "export.xml.filename",
"export.pdf", "export.pdf.label", "export.pdf.include_header",
"export.pdf.filename", "export.rtf",
"export.rtf.label", "export.rtf.include_header", "export.rtf.filename");
[/code]
The changes allow to overwrite displaytag translations and use one provided
by Spring Framework MessageSource. Blacklist has been hardcoded so that messages
from spring will not overwrite important displaytag configuration properties.
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