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DATACMNS-533 - Discover declared functions on EvaluationContextExtension.

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We new automatically register public static methods declared on classes extending EvaluationContextExtensionSupport as functions to be used within SpEL expressions.

Related pull request: spring-projects/spring-data-jpa#101
Related ticket: DATAJPA-564
This commit is contained in:
Thomas Darimont
2014-07-07 14:49:20 +02:00
committed by Oliver Gierke
parent d303f6ac37
commit 9ab9467386
3 changed files with 44 additions and 6 deletions
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12
src/test/java/org/springframework/data/repository/query/ExtensibleEvaluationContextProviderUnitTests.java
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@@ -21,6 +21,7 @@ import static org.junit.Assert.*;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
@@ -36,7 +37,7 @@ import org.springframework.expression.spel.standard.SpelExpressionParser;
*
* @author Oliver Gierke
*/
public class ExtensibleEvaluationContextProviderUnitTests<T extends Parameters<T, ? extends Parameter>> {
public class ExtensibleEvaluationContextProviderUnitTests {
DefaultParameters parameters;
@@ -110,7 +111,9 @@ public class ExtensibleEvaluationContextProviderUnitTests<T extends Parameters<T
extensions.add(new DummyExtension("_first", "first"));
EvaluationContextProvider provider = new ExtensionAwareEvaluationContextProvider(extensions);
assertThat(evaluateExpression("method()", provider), is((Object) "methodResult"));
assertThat(evaluateExpression("aliasedMethod()", provider), is((Object) "methodResult"));
assertThat(evaluateExpression("extensionMethod()", provider), is((Object) "methodResult"));
}
static class DummyExtension extends EvaluationContextExtensionSupport {
@@ -152,8 +155,11 @@ public class ExtensibleEvaluationContextProviderUnitTests<T extends Parameters<T
@Override
public Map<String, Method> getFunctions() {
Map<String, Method> functions = new HashMap<String, Method>(super.getFunctions());
try {
return Collections.singletonMap("method", getClass().getMethod("extensionMethod"));
functions.put("aliasedMethod", getClass().getMethod("extensionMethod"));
return functions;
} catch (Exception o_O) {
throw new RuntimeException(o_O);
}