We need to change some Tapestry symbols based on values from the database,
e.g. the SUPPORTED_LOCALES. We have a SettingsService that reads the values
- this service uses Hibernate, so it needs Tapestry IoC to be configured.
We use something like this to add the symbol:
public static void contributeApplicationDefaults(MappedConfiguration<String,
String> configuration, SettingsService settings) {
configuration.add(SymbolConstants.SUPPORTED_LOCALES,
settings.getString(UISymbolConstants.SUPPORTED_LOCALES, "de,en"));
}
This worked fine in Tapestry 5.2.x - now we upgraded to 5.3.x and we get an
ERROR during IoC initialization: "Construction of service 'ServiceOverride'
has failed due to recursion".
The reason behind this is the new TapestryModule#productionModeOverrides -
this method makes ServiceOverride dependent on symbols (hence SymbolSource).
We also tried another approach with contributing to SymbolSource:
@Contribute(SymbolSource.class)
public static void
addSettingsSymbolSource(OrderedConfiguration<SymbolProvider> configuration,
final SettingsService settings) {
configuration.add("settings", new SymbolProvider()
{
public String valueForSymbol(String symbolName)
{
return settings.getString(symbolName, null);
}
}, "after:*");
}
with the same result.
There was already a bug filed (closed without solution):
https://issues.apache.org/jira/browse/TAP5-1823
Has anyone an idea how to solve this problem?
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