ars.module.educate.service.AbstractProfessionService Maven / Gradle / Ivy

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package ars.module.educate.service;

import java.util.Map;
import java.util.List;
import java.util.HashMap;
import java.util.Map.Entry;
import java.util.ArrayList;
import java.util.LinkedList;
import java.util.LinkedHashMap;

import ars.util.SimpleTree;
import ars.invoke.request.Requester;
import ars.module.people.model.Group;
import ars.module.educate.model.Profession;
import ars.module.educate.service.ProfessionService;
import ars.database.repository.Repositories;
import ars.database.service.StandardGeneralService;

/**
 * 专业业务操作抽象实现
 * 
 * @author yongqiangwu
 * 
 * @param 
 *            数据模型
 */
public abstract class AbstractProfessionService extends StandardGeneralService
		implements ProfessionService {

	@Override
	public List trees(Requester requester, Integer level) {
		List objects = this.getQuery(requester).custom(requester.getParameters()).list();
		if (objects.isEmpty()) {
			return new ArrayList(0);
		}
		List departments = new LinkedList();
		Map> leaves = new LinkedHashMap>();
		for (int i = 0; i < objects.size(); i++) {
			T profession = objects.get(i);
			Group department = profession.getDepartment();
			List professions = leaves.get(department);
			if (professions == null) {
				professions = new LinkedList();
				leaves.put(department, professions);
			}
			professions.add(Repositories.getSimpleTree(profession));
			while (department != null && (level == null || department.getLevel() >= level)
					&& !departments.contains(department)) {
				departments.add(department);
				department = department.getParent();
			}
		}
		Map mappings = new HashMap(departments.size());
		List trunks = Repositories.getSimpleTrees(Repositories.mergeTrees(departments), mappings);
		for (Entry> entry : leaves.entrySet()) {
			SimpleTree leaf = mappings.get(entry.getKey());
			List children = entry.getValue();
			leaf.getChildren().addAll(0, children);
			for (SimpleTree child : children) {
				child.setParent(leaf);
			}
		}
		return trunks;
	}

}