Configuring 'Search' for Service Backed Record

with(
  /* 
    Get the first CDT containing one or more of the following:
    Logical Expression, Query Filter, Search Query. It is called
    a logicalExpression|filter|search -- abbreviated as LFS
  */
  local!parentLFS: index(
    ri!rspQueryObj,
    "logicalExpression|filter|search",
    null
  ),
  /* 
    Check to see if the above CDT has a nested LFS in it. This can happen
    if the user has clicked multiple filters or searched on filtered results.
  */
  local!childLFS: index(
    local!parentLFS,
    "logicalExpression|filter|search",
    null
  ),
  /*
    Get the LFS containing the filter(s) and/or search.
    Basically, if the child exists, it will contain all the information.
    If it doesn't then we want to parent.
  */
  local!mainLFS: if(
    isnull(
      local!childLFS
    ),
    local!parentLFS,
    local!childLFS
  ),
  /* Get runtime types of LFS (type!QueryFilter or type!Search) */
  local!types: apply(
    fn!runtimetypeof,
    {
      local!mainLFS
    }
  ),
  
  /* Get the search CDT, if there is one. It has its own type that we can look for. */
  local!searchCdt: index({local!mainLFS}, where(local!types='type!{http://www.appian.com/ae/types/2009}Search'), null),
  
  /* Gets filter CDTs if there are any. We can find them by their type. */
  local!filterCdts: index({local!mainLFS}, where(local!types='type!{http://www.appian.com/ae/types/2009}QueryFilter'), {}),
  
  
  local!recSearchText: if(
    isnull(
      local!searchCdt
    ),
    "",
    tostring(
      index(
        cast(
          'type!{http://www.appian.com/ae/types/2009}Search',
          local!searchCdt
        ),
        "searchQuery",
        ""
      )
    )
  ),
  
  local!recFilters: if(
    rule!APN_isEmpty(
      local!filterCdts
    ),
    {},
    cast('type!{http://www.appian.com/ae/types/2009}QueryFilter?list', local!filterCdts)
  ),
  
  /* Get filters' fields and values to avoid function repitition */
  local!filterFields: if(rule!APN_isEmpty(local!recFilters), {}, index(local!recFilters, "field", {})),
  local!filterValues: if(rule!APN_isEmpty(local!recFilters), {}, index(local!recFilters, "value", {})),  
  
  /* Get filtered 'Request Status' */
  local!requestStatusFilterValues: if(
    rule!APN_isEmpty(local!filterFields), 
    "", 
    displayvalue(
      "requestStatus_txt",
      local!filterFields,
      local!filterValues,
      null
    )
  ),
  
  /* Get filtered 'Request Type' */
  local!requestTypeFilterValues: if(
    rule!APN_isEmpty(local!filterFields), 
    "", 
    displayvalue(
    "requestType_txt",
    local!filterFields,
    local!filterValues,
    null
    )
  ),  
  
  a!queryEntity(
    entity: cons!WMG_GBL_REQ_TRACK_VIEW_ENTITY,
    query: a!query(
      logicalExpression: a!queryLogicalExpression(
        operator: "AND",
        filters: {
          /* Default Filter */
          a!queryFilter(
            field: "businessUnit_txt",
            operator: "=",
            value: ri!businessUnit_txt
          ),
          if(
            rule!APN_isEmpty(
              local!requestTypeFilterValues
            ),
            {},
            a!queryFilter(
              field: "requestType_txt",
              operator: "=",
              value: local!requestTypeFilterValues
            )
          ),          
          if(
            rule!APN_isEmpty(
              local!requestStatusFilterValues
            ),
            {},
            a!queryFilter(
              field: "requestStatus_txt",
              operator: "=",
              value: local!requestStatusFilterValues
            )
          )
          logicalExpression: a!queryLogicalExpression(
            operator: "OR",
            filters: {
              if(
                rule!APN_isBlank(
                  local!recSearchText
                ),
                {},
                {
                  a!queryFilter(
                    field: "requestId_int",
                    operator: "=",
                    value: local!recSearchText
                  ),
                  a!queryFilter(
                    field: "accountNumber_txt",
                    operator: "=",
                    value: local!recSearchText
                  ),
                  a!queryFilter(
                    field: "clientName_txt",
                    operator: "=",
                    value: local!recSearchText
                  ),
                  a!queryFilter(
                    field: "taxIdValue_txt",
                    operator: "=",
                    value: local!recSearchText
                  )                
                }
              )
            }
          )            
        }
      ),
      pagingInfo: a!pagingInfo(
        startIndex: 1,
        batchSize: 10,
        sort: a!sortInfo(
          field: "createdDate_dt",
          ascending: false
        )
      )
    )
  )
)