Question

我有一个像这样的基于sql的viewObject（比这里更多的列）和LOV，我想查询

   SELECT 
        SAS_MARKS_NEW_V.MARK MARK, 
        SAS_MARKS_NEW_V.PASS PASS, 
        SAS_MARKS_NEW_V.SEAS_ID SEAS_ID, 
        SAS_MARKS_NEW_V.STUD_ID STUD_ID, 
    FROM 
        SAS_MARKS_NEW_V

以_ID结尾的字段未显示在UI中，并且附有值列表。视图访问器是精心设计的（我不使用共享的AM实例，但设置RowLevelBinds为false，SharedVOInstance为true）。到了我丢弃的页面：用表查询。这个页面加载得很好（只有很少的selectOneChoice和ComboWithLov），但是当我从lov中选择一些值并点击搜索时，需要一段时间。使用最好的级别的记录器我看到搜索（即使没有找到行），执行多个LOV选择查询：

    <ADFLogger> <begin> Get LOV list
    <ADFLogger> <begin> Get LOV list
    <ADFLogger> <addContextData> Get LOV list
    <ADFLogger> <addContextData> Get LOV list
    <ADFLogger> <end> Get LOV list
    <ADFLogger> <end> Get LOV list
    <ViewRowSetImpl> <execute> [2416] _LOCAL_VIEW_USAGE_internal_vcival_def_GrouTypeLOVVO1 ViewRowSetImpl.execute caused params to be "un"changed
    <ViewRowSetImpl> <execute> [2416] _LOCAL_VIEW_USAGE_internal_vcival_def_GrouTypeLOVVO1 ViewRowSetImpl.execute caused params to be "un"changed
    <ViewRowSetImpl> <initQueryCollection> [2417] Carrying over CappedRowCount:-1for ViewRowSet:_LOCAL_VIEW_USAGE_internal_vcival_def_GrouTypeLOVVO1
    <ViewRowSetImpl> <initQueryCollection> [2417] Carrying over CappedRowCount:-1for ViewRowSet:_LOCAL_VIEW_USAGE_internal_vcival_def_GrouTypeLOVVO1
    <QueryCollection> <createColumnList> [2418] Column count: 3
    <QueryCollection> <createColumnList> [2418] Column count: 3
    <ViewRowSetImpl> <execute> [2419] executeQueryForCollection ViewObject:_LOCAL_VIEW_USAGE_internal_vcival_def_GrouTypeLOVVO1, RowSet:_LOCAL_VIEW_USAGE_internal_vcival_def_GrouTypeLOVVO1
    <ViewRowSetImpl> <execute> [2419] executeQueryForCollection ViewObject:_LOCAL_VIEW_USAGE_internal_vcival_def_GrouTypeLOVVO1, RowSet:_LOCAL_VIEW_USAGE_internal_vcival_def_GrouTypeLOVVO1
    <ADFLogger> <begin> Execute query
    <ADFLogger> <begin> Execute query
    <ViewObjectImpl> <buildQuery> [2420] _LOCAL_VIEW_USAGE_internal_vcival_def_GrouTypeLOVVO1>#q old SQLStmtBufLen: 165, actual=135, storing=165
    <ViewObjectImpl> <buildQuery> [2420] _LOCAL_VIEW_USAGE_internal_vcival_def_GrouTypeLOVVO1>#q old SQLStmtBufLen: 165, actual=135, storing=165
    <ViewObjectImpl> <buildQuery> [2421] SELECT 
    GROU_TYPE_V.CLVA_ID CLVA_ID, 
    GROU_TYPE_V.CODE CODE, 
    GROU_TYPE_V.TITLE TITLE 
    FROM 
    CL_GROU_TYPE_V GROU_TYPE_V
    <ViewObjectImpl> <buildQuery> [2421] SELECT 
    GROU_TYPE_V.CLVA_ID CLVA_ID, 
    GROU_TYPE_V.CODE CODE, 
    GROU_TYPE_V.TITLE TITLE 
    FROM 
    CL_GROU_TYPE_V GROU_TYPE_V
    <ViewObjectImpl> <getStatementFromCache> [2422] ViewObject: [com.innodea.sas.model.lovs.views.GrouTypeLOVVO]MarksAM._LOCAL_VIEW_USAGE_internal_vcival_def_GrouTypeLOVVO1 Reusing defined prepared Statement
    <ViewObjectImpl> <getStatementFromCache> [2422] ViewObject: [com.innodea.sas.model.lovs.views.GrouTypeLOVVO]MarksAM._LOCAL_VIEW_USAGE_internal_vcival_def_GrouTypeLOVVO1 Reusing defined prepared Statement
    <ViewObjectImpl> <bindParametersForCollection> [2423] Bind params for ViewObject: [com.innodea.sas.model.lovs.views.GrouTypeLOVVO]MarksAM._LOCAL_VIEW_USAGE_internal_vcival_def_GrouTypeLOVVO1
    <ViewObjectImpl> <bindParametersForCollection> [2423] Bind params for ViewObject: [com.innodea.sas.model.lovs.views.GrouTypeLOVVO]MarksAM._LOCAL_VIEW_USAGE_internal_vcival_def_GrouTypeLOVVO1
    <ADFLogger> <addContextData> Execute query
    <ADFLogger> <addContextData> Execute query
    <ADFLogger> <addContextData> Execute query
    <ADFLogger> <addContextData> Execute query
    <ADFLogger> <end> Execute query
    <ADFLogger> <end> Execute query

这是否意味着对于每个返回的行都会发出一个lov sql来设置viewAccessors？我可以以某种方式加快查询速度吗？具有lov值的DoviewObjects无法在默认af：query中有效使用？

Answer 1

我正在使用来自应用程序模块外部的视图对象，它们未包含在共享应用程序模块中。这导致每行的新行集。详细信息如下：http://withice.blogspot.com/2014/06/tiuning-list-of-values-in-viewobject.html

af：查询问题为搜索时的每一行和每个LOV选择

1 个答案: