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JSR 380's RI, Hibernate Validator version ${hibernate-validator.version} and its dependencies repackaged as OSGi bundle
/*
* Hibernate Validator, declare and validate application constraints
*
* License: Apache License, Version 2.0
* See the license.txt file in the root directory or .
*/
package org.hibernate.validator.internal.xml;
import static org.hibernate.validator.internal.util.CollectionHelper.newHashMap;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.Collections;
import java.util.Map;
import org.hibernate.validator.internal.util.privilegedactions.LoadClass;
/**
* A helper for loading classes by names, as given in XML constraint mappings. Given names can be the names of primitive
* types, qualified names or unqualified names (in which case a given default package will be assumed).
*
* @author Gunnar Morling
*/
/*package*/ class ClassLoadingHelper {
private static final String PACKAGE_SEPARATOR = ".";
private static final String ARRAY_CLASS_NAME_PREFIX = "[L";
private static final String ARRAY_CLASS_NAME_SUFFIX = ";";
private static final Map> PRIMITIVE_NAME_TO_PRIMITIVE;
static {
Map> tmpMap = newHashMap( 9 );
tmpMap.put( boolean.class.getName(), boolean.class );
tmpMap.put( char.class.getName(), char.class );
tmpMap.put( double.class.getName(), double.class );
tmpMap.put( float.class.getName(), float.class );
tmpMap.put( long.class.getName(), long.class );
tmpMap.put( int.class.getName(), int.class );
tmpMap.put( short.class.getName(), short.class );
tmpMap.put( byte.class.getName(), byte.class );
tmpMap.put( Void.TYPE.getName(), Void.TYPE );
PRIMITIVE_NAME_TO_PRIMITIVE = Collections.unmodifiableMap( tmpMap );
}
private final ClassLoader externalClassLoader;
ClassLoadingHelper(ClassLoader externalClassLoader) {
this.externalClassLoader = externalClassLoader;
}
/*package*/ Class loadClass(String className, String defaultPackage) {
if ( PRIMITIVE_NAME_TO_PRIMITIVE.containsKey( className ) ) {
return PRIMITIVE_NAME_TO_PRIMITIVE.get( className );
}
StringBuilder fullyQualifiedClass = new StringBuilder();
String tmpClassName = className;
if ( isArrayClassName( className ) ) {
fullyQualifiedClass.append( ARRAY_CLASS_NAME_PREFIX );
tmpClassName = getArrayElementClassName( className );
}
if ( isQualifiedClass( tmpClassName ) ) {
fullyQualifiedClass.append( tmpClassName );
}
else {
fullyQualifiedClass.append( defaultPackage );
fullyQualifiedClass.append( PACKAGE_SEPARATOR );
fullyQualifiedClass.append( tmpClassName );
}
if ( isArrayClassName( className ) ) {
fullyQualifiedClass.append( ARRAY_CLASS_NAME_SUFFIX );
}
return loadClass( fullyQualifiedClass.toString() );
}
private Class loadClass(String className) {
return run( LoadClass.action( className, externalClassLoader ) );
}
private static boolean isArrayClassName(String className) {
return className.startsWith( ARRAY_CLASS_NAME_PREFIX ) && className.endsWith( ARRAY_CLASS_NAME_SUFFIX );
}
private static String getArrayElementClassName(String className) {
return className.substring( 2, className.length() - 1 );
}
private static boolean isQualifiedClass(String clazz) {
return clazz.contains( PACKAGE_SEPARATOR );
}
/**
* Runs the given privileged action, using a privileged block if required.
*
* NOTE: This must never be changed into a publicly available method to avoid execution of arbitrary
* privileged actions within HV's protection domain.
*/
private static T run(PrivilegedAction action) {
return System.getSecurityManager() != null ? AccessController.doPrivileged( action ) : action.run();
}
}