Package org.nutz.dao.impl.entity.field

Examples of org.nutz.dao.impl.entity.field.ManyManyLinkField

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  }

  protected void createRelation(Dao dao, Entity<?> en) {
    final List<Sql> sqls = new ArrayList<Sql>(5);
    for (LinkField lf : en.visitManyMany(null, null, null)) {
      ManyManyLinkField mm = (ManyManyLinkField) lf;
      if (dao.exists(mm.getRelationName()))
        continue;
      String sql = "CREATE TABLE " + mm.getRelationName() + "(";
      sql += mm.getFromColumnName() + " " + evalFieldType(mm.getHostField()) + ",";
      sql += mm.getToColumnName() + " " + evalFieldType(mm.getLinkedField());
      sql += ")";
      sqls.add(Sqls.create(sql));
    }
    dao.execute(sqls.toArray(new Sql[sqls.size()]));
  }
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  }

  protected void dropRelation(Dao dao, Entity<?> en) {
    final List<Sql> sqls = new ArrayList<Sql>(5);
    for (LinkField lf : en.visitManyMany(null, null, null)) {
      ManyManyLinkField mm = (ManyManyLinkField) lf;
      if (!dao.exists(mm.getRelationName()))
        continue;
      sqls.add(Sqls.create("DROP TABLE " + mm.getRelationName()));
    }
    dao.execute(sqls.toArray(new Sql[sqls.size()]));
  }
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    for (LinkInfo li : manys) {
      en.addLinkField(new ManyLinkField(en, holder, li));
    }
    // 多对多 '@ManyMany'
    for (LinkInfo li : manymanys) {
      en.addLinkField(new ManyManyLinkField(en, holder, li));
    }
    // 检查复合主键
    en.checkCompositeFields(null == ti.annPK ? null : ti.annPK.value());

    /*
 
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  }

  @Test
  public void eval_manymany() {
    Entity<?> en = en(Base.class);
    ManyManyLinkField link = (ManyManyLinkField) en.getLinkFields("fighters").get(0);
    assertEquals("dao_m_base_fighter", link.getRelationName());
  }
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  @Test
  public void tank_many_many_link_test() {
    pojos.initPlatoon(1);
    TableName.set(1);
    Entity<?> en = dao.getEntity(Tank.class);
    ManyManyLinkField link = (ManyManyLinkField) en.getLinkFields("members").get(0);
    assertEquals("dao_d_m_soldier_tank_1", link.getRelationName());
    assertEquals("id", link.getLinkedPkNames()[0]);
    assertEquals("name", link.getLinkedPkNames()[1]);
    TableName.clear();
    pojos.dropPlatoon(1);
  }
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*/
public class DoClearRelationByLinkedFieldLinkVisitor extends AbstractLinkVisitor {

  public void visit(Object obj, LinkField lnk) {
    if (lnk instanceof ManyManyLinkField) {
      final ManyManyLinkField mm = (ManyManyLinkField) lnk;
      Object value = mm.getValue(obj);
      if (Lang.length(value) == 0)
        return;

      final Pojo pojo = opt.maker().makeDelete(mm.getRelationName());
      pojo.append(Pojos.Items.cndColumn(mm.getToColumnName(), mm.getLinkedField(), null));

      Lang.each(value, new Each<Object>() {
        public void invoke(int i, Object ele, int length) throws ExitLoop, LoopException {
          pojo.addParamsBy(mm.getLinkedField().getValue(ele));
        }
      });

      opt.add(pojo);
    }
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    this.items = Pojos.Items.cnd(cnd);
  }

  public void visit(Object obj, LinkField lnk) {
    if (lnk instanceof ManyManyLinkField) {
      ManyManyLinkField mm = (ManyManyLinkField) lnk;
      Entity<?> en = opt.makeEntity(mm.getRelationName(), map);
      Pojo pojo = opt.maker().makeUpdate(en, null);
      pojo.setOperatingObject(map);
      pojo.append(items);
      opt.add(pojo);
    }
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  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<Map<String, Object>> list = new ArrayList<Map<String, Object>>(Lang.length(value));
      Lang.each(value, new Each<Object>() {
        public void invoke(int i, Object ele, int length) throws ExitLoop, LoopException {
          list.add(new RelationObjectMap(mm, obj, ele));
        }
      });

      if (list.isEmpty())
        return;

      Entity<Map<String, Object>> en = holder.makeEntity(mm.getRelationName(), list.get(0));
      Pojo pojo = opt.maker().makeInsert(en);
      pojo.setOperatingObject(list);
      for (Object p : list)
        pojo.addParamsBy(p);
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public class DoClearRelationByHostFieldLinkVisitor extends AbstractLinkVisitor {

  public void visit(Object obj, LinkField lnk) {
    if (lnk instanceof ManyManyLinkField) {
      final ManyManyLinkField mm = (ManyManyLinkField) lnk;

      final Pojo pojo = opt.maker().makeDelete(mm.getRelationName());
      pojo.append(Pojos.Items.cndColumn(  mm.getFromColumnName(),
                        mm.getHostField(),
                        mm.getHostField().getValue(obj)));

      opt.add(pojo);
    }
  }
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    }

    protected void createRelation(Dao dao, Entity<?> en) {
        final List<Sql> sqls = new ArrayList<Sql>(5);
        for (LinkField lf : en.visitManyMany(null, null, null)) {
            ManyManyLinkField mm = (ManyManyLinkField) lf;
            if (dao.exists(mm.getRelationName()))
                continue;
            String sql = "CREATE TABLE " + mm.getRelationName() + "(";
            sql += mm.getFromColumnName() + " " + evalFieldType(mm.getHostField()) + ",";
            sql += mm.getToColumnName() + " " + evalFieldType(mm.getLinkedField());
            sql += ")";
            sqls.add(Sqls.create(sql));
        }
        dao.execute(sqls.toArray(new Sql[sqls.size()]));
    }
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Related Classes of org.nutz.dao.impl.entity.field.ManyManyLinkField

  • org.nutz.dao.impl.entity.AnnotationEntityMaker
  • org.nutz.dao.impl.jdbc.AbstractJdbcExpert
  • org.nutz.dao.impl.link.DoClearRelationByHostFieldLinkVisitor
  • org.nutz.dao.impl.link.DoClearRelationByLinkedFieldLinkVisitor
  • org.nutz.dao.impl.link.DoInsertRelationLinkVisitor
  • org.nutz.dao.impl.link.DoUpdateRelationLinkVisitor
  • org.nutz.dao.test.entity.DynamicEntityParsingTest
  • org.nutz.dao.test.entity.EntityParsingTest
  • org.nutz.dao.util.cri.SimpleCriteria
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