org.apache.openjpa.datacache.Caches Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.openjpa.datacache;
import java.util.Collection;
import java.util.HashSet;
import java.util.Set;
import org.apache.openjpa.conf.OpenJPAConfiguration;
class Caches {
/**
* Utility to build up a set of classes from their class names
* when operating outside the context of a persistence manager.
* The set classes can be null, in which case a new Set will be created.
*/
static Set> addTypesByName(OpenJPAConfiguration conf,
Collection classNames, Set> classes) {
if (classNames == null || classNames.isEmpty())
return classes;
ClassLoader loader = conf.getClassResolverInstance().getClassLoader(null, null);
Class cls;
for (String className : classNames) {
try {
cls = Class.forName(className, true, loader);
if (classes == null)
classes = new HashSet<>();
classes.add(cls);
} catch (Throwable t) {
conf.getLog(OpenJPAConfiguration.LOG_RUNTIME).warn(null, t);
}
}
return classes;
}
}