Spring Data JPA – Named query ignoring null parameters

I have the following repository: @Repository public interface EntityRepository extends JpaRepository<Entity, Long> { List<Entity> findAllByFirstId(Long firstId); List<Entity> findAllBySecondId(Long secondId); List<Entity> findAllByFirstIdAndSecondId(Long firstId, Long secondId); } The constructor implementing an interface…

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What does ‘Failed to configure a DataSource: ‘url’ attribute is not specified and no embedded datasource could be configured.’ mean?

So I'm building this Spring MVC application that connects to a MySQL Database using Hibernate and C3P0 with the following dependencies: <?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion>…

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