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/*-
* ============LICENSE_START=======================================================
* SDC
* ================================================================================
* Copyright (C) 2019 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package org.onap.sdc.dcae.catalog.commons;
import java.util.Arrays;
import java.util.List;
import org.onap.sdc.dcae.catalog.commons.ListBuilder;
import java.util.LinkedList;
public class ListBuilder<T> {
private List<T> list;
public ListBuilder() {
this.list = new LinkedList<T>();
}
public boolean isEmpty() {
return this.list.isEmpty();
}
public ListBuilder add(T theValue) {
this.list.add(theValue);
return this;
}
public ListBuilder addAll(final Iterable<? extends T> theValues) {
for (final T val : theValues) {
this.list.add(val);
}
return this;
}
public ListBuilder addAll(final List<? extends T> theList) {
this.list.addAll(theList);
return this;
}
public ListBuilder addAll(final T[] theArray) {
for (T t: theArray) this.list.add(t);
return this;
}
public List build() {
return this.list;
}
public List buildOpt() {
return this.list.isEmpty() ? null : this.list;
}
public static <V> List<V> asList(V[] theArray) {
return Arrays.asList(theArray);
}
public static <V> List<V> asListOpt(V[] theArray) {
return (theArray != null && theArray.length > 0) ? Arrays.asList(theArray) : null;
}
}
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