Examples with LinkVisitor org.nutz.dao.entity.LinkVisitor used on opensource projects

Example 1 with LinkVisitor

use of org.nutz.dao.entity.LinkVisitor in project nutz by nutzam.

the class NutDao method doLinkQuery.

private LinkVisitor doLinkQuery(final EntityOperator opt, final Condition cnd) {
    return new LinkVisitor() {

        public void visit(final Object obj, final LinkField lnk) {
            Pojo pojo = opt.maker().makeQuery(lnk.getLinkedEntity());
            pojo.setOperatingObject(obj);
            PItem[] _cndItems = Pojos.Items.cnd(lnk.createCondition(obj));
            pojo.append(_cndItems);
            if (cnd != null) {
                if (cnd instanceof Criteria) {
                    Criteria cri = (Criteria) cnd;
                    SqlExpressionGroup seg = cri.where();
                    if (_cndItems.length > 0 && seg != null && !seg.isEmpty()) {
                        seg.setTop(false);
                        pojo.append(Pojos.Items.wrap(" AND "));
                    }
                    pojo.append(cri);
                    if (cri.getPager() != null) {
                        pojo.setPager(cri.getPager());
                        expert.formatQuery(pojo);
                    }
                } else // 普通条件
                {
                    pojo.append(new ConditionPItem(cnd));
                }
            }
            pojo.setAfter(lnk.getCallback());
            pojo.setEntity(lnk.getLinkedEntity());
            _exec(pojo);
            lnk.setValue(obj, pojo.getResult());
        }
    };
}

Example 2 with LinkVisitor

use of org.nutz.dao.entity.LinkVisitor in project nutz by nutzam.

the class NutDao method insertWith.

public <T> T insertWith(T obj, String regex) {
    // TODO 天啊,每个调用都有4个正则表达式,能快起来不?
    // TODO zzh: NutEntity 会缓存正则表达式计算的结果的，会很快的
    EntityOperator opt = _optBy(obj);
    if (null == opt)
        return null;
    final LinkVisitor one = doInsert(opt);
    final boolean[] flag = new boolean[1];
    // issue 889. hostField是@Id(auto=true)的时候
    // 需要把相应的@One对象,押后到host对象插入之后
    opt.entity.visitOne(obj, regex, new LinkVisitor() {

        public void visit(Object obj, LinkField lnk) {
            if (lnk.getHostField().isId()) {
                flag[0] = true;
                return;
            }
            one.visit(obj, lnk);
        }
    });
    opt.addInsert();
    opt.entity.visitMany(obj, regex, doInsert(opt));
    opt.entity.visitManyMany(obj, regex, doInsert(opt));
    opt.entity.visitManyMany(obj, regex, doInsertRelation(opt));
    opt.exec();
    if (flag[0]) {
        opt = _optBy(obj);
        final LinkVisitor _one = doInsert(opt);
        opt.entity.visitOne(obj, regex, new LinkVisitor() {

            public void visit(Object obj, LinkField lnk) {
                if (!lnk.getHostField().isId())
                    return;
                _one.visit(obj, lnk);
            }
        });
        opt.exec();
    }
    return obj;
}

Example 3 with LinkVisitor

use of org.nutz.dao.entity.LinkVisitor in project nutz by nutzam.

the class NutDao method doFetch.

private LinkVisitor doFetch(final EntityOperator opt) {
    return new LinkVisitor() {

        public void visit(final Object obj, final LinkField lnk) {
            Pojo pojo = opt.maker().makeQuery(lnk.getLinkedEntity());
            pojo.setOperatingObject(obj);
            pojo.append(Pojos.Items.cnd(lnk.createCondition(obj)));
            pojo.setAfter(lnk.getCallback());
            _exec(pojo);
            lnk.setValue(obj, pojo.getObject(Object.class));
        }
    };
}