package com.google.code.lightssh.project.tree.service;
import javax.annotation.Resource;
import org.springframework.stereotype.Component;
import com.google.code.lightssh.common.ApplicationException;
import com.google.code.lightssh.common.dao.Dao;
import com.google.code.lightssh.common.service.BaseManagerImpl;
import com.google.code.lightssh.common.util.StringUtil;
import com.google.code.lightssh.project.tree.entity.Node;
import com.google.code.lightssh.project.tree.entity.Tree;
/**
* tree manager
* @author YangXiaojin
*
*/
@Component("treeManager")
public class TreeManagerImpl extends BaseManagerImpl<Tree> implements TreeManager{
private static final long serialVersionUID = 377108948620867982L;
@Resource(name="nodeDao")
private Dao<Node> nodeDao;
@Resource(name="treeDao")
public void setDao(Dao<Tree> dao) {
this.dao = dao;
}
public Dao<Tree> getDao( ){
return super.dao;
}
@Override
public Node getNode(Node node) {
return nodeDao.read(node);
}
public void save(Tree t) {
if( t.isInsert() ){
Node root = new Node("root","tree root node!");
t.setRoot(root);
dao.create(t);
}else{
Tree db_tree = dao.read(t);
if( db_tree != null){
db_tree.setName(t.getName());
db_tree.setDescription(t.getDescription());
db_tree.setMaxChildren(t.getMaxChildren());
db_tree.setMaxLayer(t.getMaxLayer());
dao.update(db_tree);
}
}
}
@Override
public void saveNode(Tree tree,Node node) {
if( node == null || tree == null )
throw new ApplicationException("树和结点都不能为空！");
Tree db_tree = this.get(tree);
if( db_tree == null )
throw new ApplicationException("树已不存在！");
if(node.getParent()==null ||
StringUtil.clean(node.getParent().getIdentity())==null ){
node.setParent( db_tree.getRoot() );
}else{
Node parent = nodeDao.read(node.getParent());
if( parent == null )
throw new ApplicationException("父结点(id="
+node.getParent().getIdentity()+")已不存在！");
}
if( node.isInsert() )
nodeDao.create(node);
else
nodeDao.update(node);
}
}