io.datarouter.scanner.IterableScanner Maven / Gradle / Ivy

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/**
 * Copyright © 2009 HotPads ([email protected])
 *
 * 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 io.datarouter.scanner;

import java.util.List;
import java.util.RandomAccess;

public class IterableScanner{

	public static  Scanner of(Iterable iterable){
		if(iterable instanceof List && iterable instanceof RandomAccess){
			return RandomAccessScanner.of((List)iterable);
		}
		return IteratorScanner.of(iterable.iterator());
	}

	public static  Scanner ofNullable(Iterable iterable){
		return iterable == null ? EmptyScanner.singleton() : of(iterable);
	}

}