First attempt to make a module that is pure JPA support, without native

querydsl-libraries/pom.xml

@@ -28,6 +28,7 @@
     <module>querydsl-r2dbc</module>
 
     <!-- JPA -->
+    <module>querydsl-jpa-only</module>
     <module>querydsl-jpa</module>
     <module>querydsl-jpa-spring</module>
     <!-- NoSQL -->

querydsl-libraries/querydsl-jpa-only/README.md

@@ -0,0 +1,76 @@
+## Querydsl JPA
+
+The JPA module provides integration with the JPA 2 persistence API.
+
+**Maven integration**
+
+ Add the following dependencies to your Maven project :
+
+```XML
+<dependency>
+  <groupId>io.github.openfeign.querydsl</groupId>
+  <artifactId>querydsl-jpa</artifactId>
+  <version>${querydsl.version}</version>
+</dependency>
+```
+
+And now, configure the Maven APT plugin :
+
+```XML
+<project>
+  <build>
+    <plugins>
+      ...
+      <plugin>
+        <groupId>com.mysema.maven</groupId>
+        <artifactId>apt-maven-plugin</artifactId>
+        <version>1.1.3</version>
+        <executions>
+          <execution>
+            <goals>
+              <goal>process</goal>
+            </goals>
+            <configuration>
+              <outputDirectory>target/generated-sources/java</outputDirectory>
+              <processor>com.querydsl.apt.jpa.JPAAnnotationProcessor</processor>
+            </configuration>
+          </execution>
+        </executions>
+        <dependencies>
+          <dependency>
+            <groupId>io.github.openfeign.querydsl</groupId>
+            <artifactId>querydsl-apt</artifactId>
+            <version>${querydsl.version}</version>
+          </dependency>
+        </dependencies>
+      </plugin>
+      ...
+    </plugins>
+  </build>
+</project>
+```
+
+The JPAAnnotationProcessor finds domain types annotated with the jakarta.persistence.Entity annotation and generates query types for them.
+
+If you use Hibernate annotations in your domain types you should use the APT processor com.querydsl.apt.hibernate.HibernateAnnotationProcessor instead.
+
+Run clean install and you will get your Query types generated into target/generated-sources/java.
+
+If you use Eclipse, run mvn eclipse:eclipse to update your Eclipse project to include target/generated-sources/java as a source folder.
+
+Now you are able to construct JPQL query instances and instances of the query domain model.     
+
+**Querying**
+
+Querying with Querydsl JPA is as simple as this :
+
+```JAVA
+QCustomer customer = QCustomer.customer;
+JPAQuery<?> query = new JPAQuery<Void>(entityManager);
+Customer bob = query.select(customer)
+  .from(customer)
+  .where(customer.firstName.eq("Bob"))
+  .fetchOne();
+```
+
+For more information on the Querydsl JPA module visit the reference documentation http://www.querydsl.com/static/querydsl/latest/reference/html/ch02.html#jpa_integration

querydsl-libraries/querydsl-jpa-only/etc/features.txt

@@ -0,0 +1,39 @@
+* mathematical operators +, -, *, /
+
+* binary comparison operators =, >=, <=, <>, !=, like
+
+* logical operations and, or, not
+
+* Parentheses ( ), indicating grouping
+
+* in, not in, between, is null, is not null, is empty, is not empty, member of and not member of
+
+* "Simple" case, case ... when ... then ... else ... end, and "searched" case, case when ... then ... else ... end
+
+* string concatenation ...||... or concat(...,...)
+
+* current_date(), current_time(), current_timestamp()
+
+* second(...), minute(...), hour(...), day(...), month(...), year(...),
+
+* Any function or operator defined by EJB-QL 3.0: substring(), trim(), lower(), upper(), length(), locate(), abs(), sqrt(), bit_length(), mod()
+
+* coalesce() and nullif()
+
+* str() for converting numeric or temporal values to a readable string
+
+* cast(... as ...), where the second argument is the name of a Hibernate type, and extract(... from ...) if ANSI cast() and extract() is supported by the underlying database
+
+* the HQL index() function, that applies to aliases of a joined indexed collection
+
+* HQL functions that take collection-valued path expressions: size(), minelement(), maxelement(), minindex(), maxindex(), along with the special elements() and indices functions which may be quantified using some, all, exists, any, in.
+
+* Any database-supported SQL scalar function like sign(), trunc(), rtrim(), sin()
+
+* JDBC-style positional parameters ?
+
+* named parameters :name, :start_date, :x1
+
+* SQL literals 'foo', 69, 6.66E+2, '1970-01-01 10:00:01.0'
+
+* Java public static final constants eg.Color.TABBY 

querydsl-libraries/querydsl-jpa-only/etc/precedence.txt

@@ -0,0 +1,40 @@
+BINARY, COLLATE
+!, 
+NOT
+- (unary minus), 
+~ (unary bit inversion)
+^
+*, 
+/, 
+DIV, 
+%, 
+MOD
+-, 
++
+<<, 
+>>
+&
+|
+=, 
+<=>, 
+>=, 
+>, 
+<=, 
+<, 
+<>, 
+!=, 
+IS, 
+LIKE, 
+REGEXP, 
+IN
+BETWEEN, 
+CASE, 
+WHEN, 
+THEN, 
+ELSE
+&&, 
+AND
+||, 
+OR, 
+XOR
+:=