org.nutz.dao.impl.link.DoInsertRelationLinkVisitor Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of nutz Show documentation

Nutz, which is a collections of lightweight frameworks, each of them can be used independently

There is a newer version: 1.r.72

package org.nutz.dao.impl.link;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import org.nutz.dao.entity.Entity;
import org.nutz.dao.entity.LinkField;
import org.nutz.dao.impl.AbstractLinkVisitor;
import org.nutz.dao.impl.EntityHolder;
import org.nutz.dao.impl.entity.field.ManyManyLinkField;
import org.nutz.dao.sql.Pojo;
import org.nutz.dao.util.RelationObjectMap;
import org.nutz.lang.Each;
import org.nutz.lang.ExitLoop;
import org.nutz.lang.Lang;
import org.nutz.lang.LoopException;

public class DoInsertRelationLinkVisitor extends AbstractLinkVisitor {

    private EntityHolder holder;

    public DoInsertRelationLinkVisitor(EntityHolder holder) {
        this.holder = holder;
    }

    public void visit(final Object obj, LinkField lnk) {
        // 只有多对多的映射才被考虑
        if (lnk instanceof ManyManyLinkField) {
            // 获取两边映射主键的值
            final ManyManyLinkField mm = (ManyManyLinkField) lnk;

            Object value = lnk.getValue(obj);
            
            final List> list = new ArrayList>(Lang.eleSize(value));
            Lang.each(value, new Each