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HHH-11289 : Lazy-initializing a static Method and making accessible not thread-safe 

(cherry picked from commit 3a1cbf3280)

Conflicts:
	hibernate-core/src/main/java/org/hibernate/boot/internal/AttributeConverterDescriptorImpl.java
This commit is contained in:
Gail Badner 2016-12-01 15:35:09 -08:00
parent 3805752731
commit 747d24b7c1
1 changed files with 19 additions and 24 deletions
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43
hibernate-core/src/main/java/org/hibernate/cfg/annotations/HCANNHelper.java
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@ -6,12 +6,12 @@
*/
package org.hibernate.cfg.annotations;
import java.lang.reflect.AnnotatedElement;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Member;
import java.lang.reflect.Method;
import org.hibernate.AssertionFailure;
import org.hibernate.HibernateException;
import org.hibernate.annotations.common.reflection.XProperty;
import org.hibernate.annotations.common.reflection.java.JavaXMember;
@ -21,22 +21,31 @@ import org.hibernate.annotations.common.reflection.java.JavaXMember;
* @author Steve Ebersole
*/
public class HCANNHelper {
private static Class javaXMemberClass = JavaXMember.class;
private static Method getMemberMethod;
static {
// The following is in a static block to avoid problems lazy-initializing
// and making accessible in a multi-threaded context. See HHH-11289.
final Class<?> javaXMemberClass = JavaXMember.class;
try {
getMemberMethod = javaXMemberClass.getDeclaredMethod( "getMember" );
getMemberMethod.setAccessible( true );
}
catch (NoSuchMethodException e) {
throw new AssertionFailure(
"Could not resolve JavaXMember#getMember method in order to access XProperty member signature",
e
);
}
catch (Exception e) {
throw new HibernateException( "Could not access org.hibernate.annotations.common.reflection.java.JavaXMember#getMember method", e );
}
}
public static String annotatedElementSignature(XProperty xProperty) {
if ( getMemberMethod == null ) {
resolveGetMemberMethod();
}
return getUnderlyingMember( xProperty ).toString();
}
public static Member getUnderlyingMember(XProperty xProperty) {
if ( getMemberMethod == null ) {
resolveGetMemberMethod();
}
try {
return (Member) getMemberMethod.invoke( xProperty );
}
@ -53,18 +62,4 @@ public class HCANNHelper {
);
}
}
@SuppressWarnings("unchecked")
private static void resolveGetMemberMethod() {
try {
getMemberMethod = javaXMemberClass.getDeclaredMethod( "getMember" );
getMemberMethod.setAccessible( true );
}
catch (NoSuchMethodException e) {
throw new AssertionFailure(
"Could not resolve JavaXAnnotatedElement#toAnnotatedElement method in order to access XProperty member signature",
e
);
}
}
}