Problem with range page with SQL Server

Question

Please help
JDev version JDEVADF_11.1.1.7.0_GENERIC_130226.1400.6493
I am using range paging for one of the VOs. The VO is based on single table. The VO is bounded to af:table. We need to support both Oracle and SQL server.
When database is Oracle , the range paging works fine.
But when database is SQLServer only first page is fetched properly, all the other pages are just copy of first page. The pagesize is default (25).
Did I miss anything ?
With accessMode=Scrollable the table show correct data for both Oracle and SQLServer.
This is my VO XML
<?xml version="1.0" encoding="windows-1252" ?>
<!DOCTYPE ViewObject SYSTEM "jbo_03_01.dtd">
<!---->
<ViewObject
  xmlns="http://xmlns.oracle.com/bc4j"
  Name="MessagesROVO"
  Version="11.1.1.64.93"
  InheritPersonalization="true"
  OrderBy='"TIMESTAMP" desc'
  BindingStyle="JDBC"
  CustomQuery="true"
  RowClass="model.bc4j.queries.admin.MessagesROVORowImpl"
  ComponentClass="model.bc4j.queries.admin.MessagesROVOImpl"
  FetchMode="FETCH_AS_NEEDED"
  PageIterMode="Full"
  UseGlueCode="false"
  Passivate="All"
  AccessMode="RANGE_PAGING">
  <DesignTime>
    <Attr Name="_codeGenFlag2" Value="Access|Coll|VarAccess"/>
    <Attr Name="_isExpertMode" Value="true"/>
    <Attr Name="_isCodegen" Value="true"/>
  </DesignTime>
  <Properties>
    <SchemaBasedProperties>
      <LABEL
        ResId="model.bc4j.queries.admin.MessagesROVO_LABEL"/>
    </SchemaBasedProperties>
  </Properties>
  <Variable
    Name="BINDApplicationName"
    Kind="viewcriteria"
    Type="java.lang.String">
    <AttrArray Name="ExtendedDataInts">
      <Item Value="0"/>
    </AttrArray>
  </Variable>
  <Variable
    Name="BINDServerName"
    Kind="viewcriteria"
    Type="java.lang.String">
    <AttrArray Name="ExtendedDataInts">
      <Item Value="1"/>
    </AttrArray>
  </Variable>
  <Variable
    Name="BINDStartTimestamp"
    Kind="viewcriteria"
    Type="java.lang.Float">
    <AttrArray Name="ExtendedDataInts">
      <Item Value="3"/>
    </AttrArray>
  </Variable>
  <Variable
    Name="BINDEndTimestamp"
    Kind="viewcriteria"
    Type="java.lang.Float">
    <AttrArray Name="ExtendedDataInts">
      <Item Value="4"/>
    </AttrArray>
  </Variable>
  <SQLQuery>
    <![CDATA[SELECT
    ERRORLOG.SGUID GUID,
    ERRORLOG.LLOGTYPE LOGTYPE,
    ERRORLOG.DTIMESTAMP TIMESTAMP,
    ERRORLOG.SSERVERNAME SERVERNAME,
    ERRORLOG.SAPPNAME APPNAME,
    ERRORLOG.SXMLERROR XMLERROR
FROM
    ERRORLOG ERRORLOG]]>
  </SQLQuery>
  <ViewAttribute
    Name="Guid"
    IsUpdateable="false"
    IsPersistent="false"
    IsNotNull="true"
    PrecisionRule="true"
    Precision="40"
    Scale="0"
    Type="java.lang.String"
    ColumnType="NVARCHAR2"
    AliasName="GUID"
    Expression="GUID"
    SQLType="VARCHAR">
    <DesignTime>
      <Attr Name="_DisplaySize" Value="40"/>
    </DesignTime>
  </ViewAttribute>
  <ViewAttribute
    Name="LogType"
    IsUpdateable="false"
    IsPersistent="false"
    PrecisionRule="true"
    Precision="6"
    Scale="0"
    Type="java.lang.Integer"
    ColumnType="NUMBER"
    AliasName="LOGTYPE"
    Expression="LOGTYPE"
    SQLType="INTEGER">
    <DesignTime>
      <Attr Name="_DisplaySize" Value="7"/>
    </DesignTime>
  </ViewAttribute>
  <ViewAttribute
    Name="Timestamp"
    IsUpdateable="false"
    IsPersistent="false"
    PrecisionRule="true"
    Precision="54"
    Scale="0"
    Type="java.lang.Float"
    ColumnType="FLOAT"
    AliasName="TIMESTAMP"
    Expression="TIMESTAMP"
    SQLType="FLOAT">
    <DesignTime>
      <Attr Name="_DisplaySize" Value="18"/>
    </DesignTime>
    <Dependencies>
      <Item
        Value="OccuredAt"/>
    </Dependencies>
  </ViewAttribute>
  <ViewAttribute
    Name="ServerName"
    IsUpdateable="false"
    IsPersistent="false"
    PrecisionRule="true"
    Precision="64"
    Scale="0"
    Type="java.lang.String"
    ColumnType="NVARCHAR2"
    AliasName="SERVERNAME"
    Expression="SERVERNAME"
    SQLType="VARCHAR">
    <DesignTime>
      <Attr Name="_DisplaySize" Value="64"/>
    </DesignTime>
  </ViewAttribute>
  <ViewAttribute
    Name="AppName"
    IsUpdateable="false"
    IsPersistent="false"
    PrecisionRule="true"
    Precision="10"
    Scale="0"
    Type="java.lang.String"
    ColumnType="NVARCHAR2"
    AliasName="APPNAME"
    Expression="APPNAME"
    SQLType="VARCHAR">
    <DesignTime>
      <Attr Name="_DisplaySize" Value="10"/>
    </DesignTime>
  </ViewAttribute>
  <ViewAttribute
    Name="XmlError"
    IsUpdateable="false"
    IsQueriable="false"
    IsPersistent="false"
    PrecisionRule="true"
    Type="java.lang.String"
    ColumnType="LONGVARCHAR"
    AliasName="XMLERROR"
    Expression="XMLERROR"
    SQLType="VARCHAR"/>
  <ViewAttribute
    Name="OccuredAt"
    IsUpdateable="false"
    IsSelected="false"
    IsPersistent="false"
    PrecisionRule="true"
    Type="java.sql.Date"
    ColumnType="DATE"
    AliasName="VIEW_ATTR"
    SQLType="DATE"/>
  <ViewAttribute
    Name="Summary"
    IsUpdateable="false"
    IsSelected="false"
    IsPersistent="false"
    PrecisionRule="true"
    Type="java.lang.String"
    ColumnType="VARCHAR2"
    AliasName="VIEW_ATTR"
    SQLType="VARCHAR"/>
  <ViewAttribute
    Name="TechnicalError"
    IsUpdateable="false"
    IsSelected="false"
    IsPersistent="false"
    PrecisionRule="true"
    Type="java.lang.String"
    ColumnType="VARCHAR2"
    AliasName="VIEW_ATTR"
    SQLType="VARCHAR"/>
  <ViewCriteria
    Name="MessagesROVOCriteria"
    ViewObjectName="model.bc4j.queries.admin.MessagesROVO"
    Conjunction="AND">
    <Properties>
      <CustomProperties>
        <Property
          Name="displayOperators"
          Value="InAdvancedMode"/>
        <Property
          Name="autoExecute"
          Value="false"/>
        <Property
          Name="allowConjunctionOverride"
          Value="true"/>
        <Property
          Name="showInList"
          Value="false"/>
        <Property
          Name="mode"
          Value="Basic"/>
      </CustomProperties>
    </Properties>
    <ViewCriteriaRow
      Name="vcrow6"
      UpperColumns="1">
      <ViewCriteriaItem
        Name="Timestamp"
        ViewAttribute="Timestamp"
        Operator="BETWEEN"
        Conjunction="AND"
        Required="Optional">
        <ViewCriteriaItemValue
          Name="MessagesROVOCriteria_vcrow6_Timestamp_vcval0"
          Value=":BINDStartTimestamp"
          IsBindVarValue="true"/>
        <ViewCriteriaItemValue
          Name="MessagesROVOCriteria_vcrow6_Timestamp_vcval1"
          Value=":BINDEndTimestamp"
          IsBindVarValue="true"/>
      </ViewCriteriaItem>
      <ViewCriteriaItem
        Name="ServerName"
        ViewAttribute="ServerName"
        Operator="="
        Conjunction="AND"
        Value=":BINDServerName"
        IsBindVarValue="true"
        Required="Optional"/>
      <ViewCriteriaItem
        Name="MessagesROVOCriteria_vcrow6_AppName"
        ViewAttribute="AppName"
        Operator="="
        Conjunction="AND"
        Value=":BINDApplicationName"
        IsBindVarValue="true"
        Required="Optional"/>
    </ViewCriteriaRow>
  </ViewCriteria>
  <AttrArray Name="KeyAttributes">
    <Item Value="Guid"/>
  </AttrArray>
  <ResourceBundle>
    <XliffBundle
      id="model.resource.ViewObjectsBundle_en"/>
  </ResourceBundle>
</ViewObject>

Answer 1

ADF does not support VO Range Paging with MS SQL Server. ADF supports VO Range Paging only with Oracle DB:
Oracle ADF Business Components with Multiple Databases
As far as the document above is not quite clear, I took a look inside the source code of the methods buildRangePagingQuery(...) of classes oracle.jbo.server.ViewObjectImpl, oracle.jbo.server.BaseSQLBuildeImpl, oracle.jbo.server.SQLServerSQLBuilderImpl and oracle.jbo.server.OracleSQLBuilderImpl (ADF 11.1.1.7) in order to confirm my statement.
In my opinion, it is possible to add Range Paging support for a SQLServer-backed VO by implementing a custom VO class and overriding the method ViewObjectImpl.buildRangePagingQuery(...). Your method implementation should take into account the specifics of MS SQL Server and its SQL syntax.
Dimitar
Message was edited by: DimitarDimitrov
P.S. The oracle.jbo.server.SQLServerSQLBuilderImpl class does not implement its own buildRangePagingQuery() method and uses the method implementation from its base class oracle.jbo.server.BaseSQLBuilderImpl, The base implementation just returns the original VO query intact. This is the reason you get the same rows as from the 1st page when you try to navigate through the pages.