DATAJPA-564 - Allow SpEL expressions to be the only consumer of query method parameters.

Since eclipselink doesn't reliably report whether a given query contains parameter we try to set query-parameters via brute force in SESQPB.

src/main/java/org/springframework/data/jpa/repository/query/SpelExpressionStringQueryParameterBinder.java

@@ -63,7 +63,8 @@ class SpelExpressionStringQueryParameterBinder extends StringQueryParameterBinde
 	 */
 	private <T extends Query> T potentiallyBindExpressionParameters(T jpaQuery) {
 
-		if (jpaQuery.getParameters().isEmpty()) {
+		if (isJpaParameterInformationReliable(jpaQuery) && jpaQuery.getParameters().isEmpty()) {
+			// We can rely on the fact there are no parameters in the given query.
 			return jpaQuery;
 		}
 
@@ -75,14 +76,28 @@ class SpelExpressionStringQueryParameterBinder extends StringQueryParameterBinde
 
 				Object value = evaluateExpression(expr);
 
-				if (binding.getName() != null) {
+				try {
-					jpaQuery.setParameter(binding.getName(), binding.prepare(value));
+					if (binding.getName() != null) {
-				} else {
+						jpaQuery.setParameter(binding.getName(), binding.prepare(value));
-					jpaQuery.setParameter(binding.getPosition(), binding.prepare(value));
+					} else {
+						jpaQuery.setParameter(binding.getPosition(), binding.prepare(value));
+					}
+				} catch (IllegalArgumentException iae) {
+					/*
+					 * Since Eclipse doesn't reliably report whether a query has parameters 
+					 * we simply try to set the parameters and ignore possible failures.
+					 * 
+					 */
 				}
 			}
 		}
 
 		return jpaQuery;
 	}
+
+	private <T extends Query> boolean isJpaParameterInformationReliable(T jpaQuery) {
+
+		String className = jpaQuery.getClass().getName();
+		return className.startsWith("org.apache.openjpa") || className.startsWith("org.hibernate");
+	}
 }

src/test/java/org/springframework/data/jpa/repository/EclipseLinkNamespaceUserRepositoryTests.java

@@ -74,10 +74,4 @@ public class EclipseLinkNamespaceUserRepositoryTests extends NamespaceUserReposi
 	 */
 	@Override
 	public void findByElementCollectionAttribute() {}
-
-	/**
-	 * Temporarily ignored until issue with native queries and pagination is resolved.
-	 */
-	@Override
-	public void shouldFindUsersInNativeQueryWithPagination() {}
 }

src/test/java/org/springframework/data/jpa/repository/OpenJpaNamespaceUserRepositoryTests.java

@@ -89,7 +89,7 @@ public class OpenJpaNamespaceUserRepositoryTests extends NamespaceUserRepository
 	}
 
 	/**
-	 * Temporarily ignored until issue with native queries and pagination is resolved.
+	 * Temporarily ignored until openjpa works with hsqldb 2.x.
 	 */
 	@Override
 	public void shouldFindUsersInNativeQueryWithPagination() {}