/*
* Copyright 2014 Attila Szegedi, Daniel Dekany, Jonathan Revusky
*
* Licensed 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 freemarker.ext.beans;
import java.lang.reflect.Method;
import java.util.Collection;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import freemarker.template.Configuration;
import freemarker.template.Version;
/**
* A hack to keep some unit tests producing exactly the same results on Java 8 as on Java 5-7, by hiding members
* added after Java 7.
*/
public class Java7MembersOnlyBeansWrapper extends BeansWrapper {
private static final Set<String> POST_JAVA_7_MAP_METHODS = newHashSet(
"compute", "computeIfAbsent", "computeIfPresent",
"forEach", "getOrDefault", "merge", "putIfAbsent", "replace", "replaceAll");
private static final Set<String> POST_JAVA_7_ITERABLE_METHODS = newHashSet("forEach");
private static final Set<String> POST_JAVA_7_COLLECTION_METHODS = newHashSet("parallelStream", "removeIf", "stream");
private static final Set<String> POST_JAVA_7_LIST_METHODS = newHashSet("sort", "spliterator");
MethodAppearanceFineTuner POST_JAVA_7_FILTER = new MethodAppearanceFineTuner() {
public void process(MethodAppearanceDecisionInput in, MethodAppearanceDecision out) {
Method m = in.getMethod();
Class declCl = m.getDeclaringClass();
if (Map.class.isAssignableFrom(declCl)) {
if (POST_JAVA_7_MAP_METHODS.contains(m.getName())) {
hideMember(out);
return;
}
}
if (Iterable.class.isAssignableFrom(declCl)) {
if (POST_JAVA_7_ITERABLE_METHODS.contains(m.getName())) {
hideMember(out);
return;
}
}
if (Collection.class.isAssignableFrom(declCl)) {
if (POST_JAVA_7_COLLECTION_METHODS.contains(m.getName())) {
hideMember(out);
return;
}
}
if (List.class.isAssignableFrom(declCl)) {
if (POST_JAVA_7_LIST_METHODS.contains(m.getName())) {
hideMember(out);
return;
}
}
}
private void hideMember(MethodAppearanceDecision out) {
out.setExposeMethodAs(null);
out.setExposeAsProperty(null);
}
};
public Java7MembersOnlyBeansWrapper(Version version) {
super(version);
setMethodAppearanceFineTuner(POST_JAVA_7_FILTER);
}
private static <T> Set<T> newHashSet(T... items) {
HashSet<T> r = new HashSet<T>();
for (T item : items) {
r.add(item);
}
return r;
}
public Java7MembersOnlyBeansWrapper() {
this(Configuration.DEFAULT_INCOMPATIBLE_IMPROVEMENTS);
}
}