ofbiz多表外键关联查询

1. 实现一：Screem.xml 中的 section 里，加 <action>, 加 get-related
2. 实现二：在代码中使用 DynamicViewEntity对象，加入addMemberEntity，addAlias，addViewLink，再用 find 查询

DynamicViewEntity dve = new DynamicViewEntity();

        dve.addMemberEntity("TMP", GlobalConstant.TRUST_MALL_PRODUCT_ENTITY_NAME);

        dve.addAlias("TMP", "productId");

        dve.addAlias("TMP", "productCode");

        dve.addAlias("TMP", "productName");

        dve.addAlias("TMP", "productPrice");

        dve.addAlias("TMP", "prodStatus");

        dve.addAlias("TMP", "productStandardPrice");

        dve.addAlias("TMP", "inventoryStatus");

        dve.addAlias("TMP", "productKeywords");

        dve.addAlias("TMP", "productDesc");

        dve.addAlias("TMP", "prodCreatedBy");

        dve.addAlias("TMP", "createdStamp");

        dve.addAlias("TMP", "prodModifiedBy");

        dve.addAlias("TMP", "lastUpdatedStamp");

        dve.addAlias("TMP", "shopId");

        dve.addRelation("one", "", "MallProductCategory", UtilMisc.toList(new ModelKeyMap("categoryId", "categoryId")));

        dve.addMemberEntity("MPC", "MallProductCategory");

        dve.addAlias("MPC", "categoryId");

        dve.addAlias("MPC", "sortedName");

        dve.addViewLink("TMP", "MPC", false, UtilMisc.toList(new ModelKeyMap("categoryId", "categoryId")));

1. 实现三：在 entity.xml 里定义 view-entity 实体对象,在查询时就查这个view的对象

<view-entity entity-name="VShopReview" package-name="com.ufinity.trustmall">

        <member-entity entity-alias="SR" entity-name="ShopReview"></member-entity>

        <member-entity entity-alias="TMUI" entity-name="TrustMallUserInfo"></member-entity>

        <member-entity entity-alias="TMS" entity-name="TrustMallShop"></member-entity>

        <member-entity entity-alias="SRR" entity-name="ShopReviewReported"></member-entity>

        <alias-all entity-alias="SR"/>

<alias name="shopReviewId" entity-alias="SR" group-by="true"/>

        <alias name="userName" entity-alias="TMUI"/>

        <alias name="shopName" entity-alias="TMS"/>

        <alias name="createdStamp" entity-alias="SR"/>

        <alias name="reporterId" entity-alias="SRR" field="userId" col-alias="userId"/>

        <view-link entity-alias="SR" rel-entity-alias="TMUI">

            <key-map field-name="userId" rel-field-name="userId"/>

        </view-link>

        <view-link entity-alias="SR" rel-entity-alias="TMS">

            <key-map field-name="shopId" rel-field-name="shopId"/>

        </view-link>

        <view-link entity-alias="SR" rel-entity-alias="SRR" rel-optional="true">

            <key-map field-name="shopReviewId" rel-field-name="shopReviewId"/>

        </view-link>

    </view-entity>