Query DSL - start

 build.gradle

ext {
		javaGeneratedSources = file("build/classes/generated")
		}
		idea {
		module {
		outputDir file('build/classes')
		sourceDirs += javaGeneratedSources
		generatedSourceDirs += javaGeneratedSources
		}
		}
		compileJava {
		doFirst {
		javaGeneratedSources.mkdirs()
		}
		options.compilerArgs += [
		'-parameters', '-s', javaGeneratedSources
		]
		}

// QueryDSL
		implementation "com.querydsl:querydsl-jpa:4.2.2"
		annotationProcessor("com.querydsl:querydsl-apt:4.2.2:jpa")
		annotationProcessor("org.springframework.boot:spring-boot-starter-data-jpa")

Repository.java class

extend the Repository with QueryDSL repository interfaces

public interface SomeRepository extends
		JpaRepository<SomeEntity, Long>, QuerydslPredicateExecutor<SomeEntity>, QuerydslBinderCustomizer<QSomeEntity>

create a method

@Override
		default void customize(QuerydslBindings bindings, QSomeEntity root) {
		bindings.bind(String.class).first((SingleValueBinding<StringPath, String>) StringExpression::containsIgnoreCase);
		}