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• rest-toolkit-utils
• 1.0.6
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• PartitionHelper.java

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io.github.nichetoolkit.rest.helper.PartitionHelper Maven / Gradle / Ivy

package io.github.nichetoolkit.rest.helper;


import com.google.common.collect.Lists;
import io.github.nichetoolkit.rest.RestException;
import io.github.nichetoolkit.rest.actuator.ConsumerActuator;
import io.github.nichetoolkit.rest.actuator.FunctionActuator;
import io.github.nichetoolkit.rest.util.GeneralUtils;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;

/**
 * 
PartitionHelper
 * @author Cyan ([email protected])
 * @version v1.0.0
 */
public class PartitionHelper {

    public static  void partition(Collection dataList, Integer partitionSize, ConsumerActuator> consumer) throws RestException {
        if (GeneralUtils.isEmpty(dataList)) {
            return;
        }
        if (dataList.size() > partitionSize) {
            List> partitionList = Lists.partition(new ArrayList<>(dataList), partitionSize);
            for (List partition : partitionList) {
                consumer.actuate(partition);
            }
        } else {
            consumer.actuate(dataList);
        }
    }
    

    public static  List query(Collection idList, Integer querySize, FunctionActuator, List> function) throws RestException {
        if (GeneralUtils.isEmpty(idList)) {
            return Collections.emptyList();
        }
        List entityList;
        if (idList.size() > querySize) {
            entityList = new ArrayList<>();
            List> partitionList = Lists.partition(new ArrayList<>(idList), querySize);
            for (List partition : partitionList) {
                entityList.addAll(function.actuate(partition));
            }
        } else {
            entityList = function.actuate(idList);
        }
        return entityList;
    }

    public static  Integer save(Collection dataList, Integer saveSize, FunctionActuator,Integer> function) throws RestException {
        if (GeneralUtils.isEmpty(dataList)) {
            return 0;
        }
        Integer result = 0;
        if (dataList.size() > saveSize) {
            List> partitionList = Lists.partition(new ArrayList<>(dataList), saveSize);
            for (List partition : partitionList) {
                result += function.actuate(partition);
            }
        } else {
            result = function.actuate(dataList);
        }
        return result;
    }

    public static  void delete(Collection idList, Integer deleteSize, ConsumerActuator> consumer) throws RestException {
        partition(idList,deleteSize,consumer);
    }


}