org.bonitasoft.engine.commons.CollectionUtil Maven / Gradle / Ivy
/**
* Copyright (C) 2015 BonitaSoft S.A.
* BonitaSoft, 32 rue Gustave Eiffel - 38000 Grenoble
* This library is free software; you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Foundation
* version 2.1 of the License.
* This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
* Floor, Boston, MA 02110-1301, USA.
**/
package org.bonitasoft.engine.commons;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
public class CollectionUtil {
public static Map buildSimpleMap(final String key, final Object value) {
final Map result = new HashMap();
result.put(key, value);
return result;
}
public static Set buildHashSetFromList(final Class clazz, final List list) {
final Set set = new HashSet();
set.addAll(list);
return set;
}
public static List emptyOrUnmodifiable(final List list) {
return list == null ? Collections. emptyList() : Collections.unmodifiableList(list);
}
}