bio.gcat.operation.split.Partition.java Source code

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Here is the source code for bio.gcat.operation.split.Partition.java

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/*
 * Copyright [2016] [Mannheim University of Applied Sciences]
 * 
 * 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 bio.gcat.operation.split;

import static bio.gcat.Help.*;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import bio.gcat.Documented;
import bio.gcat.Parameter;
import bio.gcat.Parameter.Type;
import bio.gcat.nucleic.Tuple;
import bio.gcat.operation.Cataloged;
import bio.gcat.operation.Named;
import com.google.common.collect.Lists;

@Named(name = "n-partition", icon = "timeline_marker")
@Cataloged(group = "Split Sequence")
@Parameter.Annotation(key = "parts", label = "Parts", type = Type.NUMBER, value = "2,32767")
@Documented(title = "Partition", category = { OPERATIONS,
        SPLITS }, resource = "help/operation/split/partition.html")
public class Partition implements Split {
    @SuppressWarnings("unchecked")
    @Override
    public List<Collection<Tuple>> split(Collection<Tuple> tuples, Object... values) {
        return (List<Collection<Tuple>>) (List<?>) Lists.partition(
                (tuples instanceof List) ? (List<Tuple>) tuples : new ArrayList<>(tuples),
                (int) Math.ceil((double) tuples.size() / (Integer) values[0]));
    }
}