package org.hibernate.metamodel.source.annotations.util;
import java.beans.Introspector;
import java.lang.reflect.Field;
import java.lang.reflect.Member;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import com.fasterxml.classmate.MemberResolver;
import com.fasterxml.classmate.ResolvedType;
import com.fasterxml.classmate.ResolvedTypeWithMembers;
import com.fasterxml.classmate.TypeResolver;
/**
* Some helper methods for reflection tasks
*
* @author Hardy Ferentschik
*/
public class ReflectionHelper {
private static final TypeResolver typeResolver = new TypeResolver();
private ReflectionHelper() {
}
/**
* Process bean properties getter by applying the JavaBean naming conventions.
*
* @param member the member for which to get the property name.
*
* @return The bean method name with the "is" or "get" prefix stripped off, {@code null}
* the method name id not according to the JavaBeans standard.
*/
public static String getPropertyName(Member member) {
String name = null;
if ( member instanceof Field ) {
name = member.getName();
}
if ( member instanceof Method ) {
String methodName = member.getName();
if ( methodName.startsWith( "is" ) ) {
name = Introspector.decapitalize( methodName.substring( 2 ) );
}
else if ( methodName.startsWith( "has" ) ) {
name = Introspector.decapitalize( methodName.substring( 3 ) );
}
else if ( methodName.startsWith( "get" ) ) {
name = Introspector.decapitalize( methodName.substring( 3 ) );
}
}
return name;
}
public static ResolvedTypeWithMembers resolveMemberTypes(Class<?> clazz) {
ResolvedType resolvedType = typeResolver.resolve( clazz );
MemberResolver memberResolver = new MemberResolver( typeResolver );
return memberResolver.resolve( resolvedType, null, null );
}
public static ResolvedTypeWithMembers resolveMemberTypes(ResolvedType type) {
MemberResolver memberResolver = new MemberResolver( typeResolver );
return memberResolver.resolve( type, null, null );
}
public static boolean isProperty(Member m) {
if ( m instanceof Method ) {
Method method = (Method) m;
return !method.isSynthetic()
&& !method.isBridge()
&& !Modifier.isStatic( method.getModifiers() )
&& method.getParameterTypes().length == 0
&& ( method.getName().startsWith( "get" ) || method.getName().startsWith( "is" ) );
}
else {
return !Modifier.isTransient( m.getModifiers() ) && !m.isSynthetic();
}
}
}