Using JayData to filter Header Detail Table - Inner Join SQL, oData

问题

Hello Am kinda new and using JayData and oData so please forgive my ignorance.

This is my object structure :

$data.Entity.extend('PlannerModel.vMasterPlanner', {
    'Sequence_Number': { key:true,type:'Edm.Int32',nullable:false,required:true },
    'Scenario_Name': { type:'Edm.String',nullable:true,maxLength:250 },
    'Activity_ID': { type:'Edm.String',nullable:false,required:true,maxLength:250 },
    'Activity_Description': { type:'Edm.String',nullable:true,maxLength:500 },
    'Object_ID': { type:'Edm.String',nullable:true,maxLength:250 },
    'Object_Description': { type:'Edm.String',nullable:true,maxLength:400 },
    'Operation_Code': { type:'Edm.String',nullable:false,required:true,maxLength:250 },
    'Operation_Description': { type:'Edm.String',nullable:true,maxLength:50 },
    'Crew_ID': { type:'Edm.String',nullable:true,maxLength:250 },
    'Crew_Name': { type:'Edm.String',nullable:true,maxLength:50 },
    'Period': { type:'Edm.Int32',nullable:true },
    'vActivity': { type:'PlannerModel.vActivity',required:true,inverseProperty:'vMasterPlanners' }   });

 $data.Entity.extend('PlannerModel.vActivity', {
    'Activity_ID': { key:true,type:'Edm.String',nullable:false,computed:true },
    'Activity_Name': { type:'Edm.String',nullable:false,required:true },
    'vMasterPlanners': { type:'Array',elementType:'PlannerModel.vMasterPlanner',inverseProperty:'vActivity' }   });


$data.EntityContext.extend('PlannerServiceLibrary.PlannerEntities', {
    ProgressDetails: { type: $data.EntitySet, elementType: PlannerModel.ProgressDetails },
      ProgressHeaders: { type: $data.EntitySet, elementType: PlannerModel.ProgressHeader },
      vCrews: { type: $data.EntitySet, elementType: PlannerModel.vCrew },
      vPeriods: { type: $data.EntitySet, elementType: PlannerModel.vPeriod },
      vOperations: { type: $data.EntitySet, elementType: PlannerModel.vOperation },
      vActivities: { type: $data.EntitySet, elementType: PlannerModel.vActivity },
      vMasterPlanners: { type: $data.EntitySet, elementType: PlannerModel.vMasterPlanner }   });

Just a little explanation : Table Master planner is a detail table and Table activity is the header table I need to select all the activities from the activity table (header) where the crew ID which is found in the detail table for example = 2 how can i do that using oData and JayData

am currently using

provider.vActivities.filter(function (ac) { 
return ac.vMasterPlanners.Crew_ID == "FM2_F/W" })
               .toArray(function (e) {
                   console.log(e);
               });

and this is the error Unknown expression type to handle: EntitySetExpression localhost/mobile-web/htdocs/assets/jayData/jaydata.js Line 89

Please help anyone !!

Thank You !

回答1:

You need 'some' or 'every' operator, see this http://jaydata.org/blog/using-some-and-every-with-jaydata-odata-provider

回答2:

It looks like a known issue I have added it in to github http://github.com/jaydata/jaydata/issues/70

来源：https://stackoverflow.com/questions/14081989/using-jaydata-to-filter-header-detail-table-inner-join-sql-odata

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