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Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
/*
* Copyright 2012-2023 the original author or authors.
* Copyright 2012-2025 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
Expand Down Expand Up @@ -34,6 +34,8 @@
*/
class MessageSourceMessageInterpolator implements MessageInterpolator {

private static final String DEFAULT_MESSAGE = MessageSourceMessageInterpolator.class.getName();

private static final char PREFIX = '{';

private static final char SUFFIX = '}';
Expand Down Expand Up @@ -115,13 +117,11 @@ else if (buf.charAt(i) == SUFFIX) {

private String replaceParameter(String parameter, Locale locale, Set<String> visitedParameters) {
parameter = replaceParameters(parameter, locale, visitedParameters);
String value = this.messageSource.getMessage(parameter, null, null, locale);
return (value != null && !isUsingCodeAsDefaultMessage(value, parameter))
? replaceParameters(value, locale, visitedParameters) : null;
}

private boolean isUsingCodeAsDefaultMessage(String value, String parameter) {
return value.equals(parameter);
String value = this.messageSource.getMessage(parameter, null, DEFAULT_MESSAGE, locale);
if (value == null || value.equals(DEFAULT_MESSAGE)) {
return null;
}
return replaceParameters(value, locale, visitedParameters);
}

}
Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
/*
* Copyright 2012-2023 the original author or authors.
* Copyright 2012-2025 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
Expand Down Expand Up @@ -62,8 +62,8 @@ void interpolateWhenParametersAreUnknownShouldLeaveThemUnchanged() {
void interpolateWhenParametersAreUnknownUsingCodeAsDefaultShouldLeaveThemUnchanged() {
this.messageSource.setUseCodeAsDefaultMessage(true);
this.messageSource.addMessage("top", Locale.getDefault(), "{child}+{child}");
assertThat(this.interpolator.interpolate("{foo}{top}{bar}", this.context))
.isEqualTo("{foo}{child}+{child}{bar}");
this.messageSource.addMessage("foo", Locale.getDefault(), "foo");
assertThat(this.interpolator.interpolate("{foo}{top}{bar}", this.context)).isEqualTo("foo{child}+{child}{bar}");
}

@Test
Expand Down