Can anyone help me on this? thanks.
On Aug 10, 2:38 am, zhaoyi <[email protected]> wrote:
> I have read the article "Providers for multiple instances" in this
> linkhttp://code.google.com/p/google-guice/wiki/InjectingProviders.
> The example shown is:
> public class LogFileTransactionLog implements TransactionLog {
>
> private final Provider<LogFileEntry> logFileProvider;
>
> @Inject
> public LogFileTransactionLog(Provider<LogFileEntry> logFileProvider)
> {
> this.logFileProvider = logFileProvider;
> }
>
> public void logChargeResult(ChargeResult result) {
> LogFileEntry summaryEntry = logFileProvider.get();
> summaryEntry.setText("Charge " + (result.wasSuccessful() ?
> "success" : "failure"));
> summaryEntry.save();
>
> if (!result.wasSuccessful()) {
> LogFileEntry detailEntry = logFileProvider.get();
> detailEntry.setText("Failure result: " + result);
> detailEntry.save();
> }
> }
>
> There are two places to call logFileProvider.get() method. Are they
> return the same type of LogFileEntry? If they return different type of
> LogFileEntry, how does logFileProvider know which type is requested?
>
> thanks.
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