How do I add a Fetched Property in XCode's Data Model Editor for minimum value of one attribute??
My model:
Model http://www.freeimagehosting.net/uploads/b48853070e.png
Item (name, note, storedItem)
StoredItem (price, item)
Item 1 ---> N StoredITem (1->N Relationship)
I want that Item has a fetched property named minPrice and its value is the minimum value setted for price in the storedItems.
Example:
Item1 (banana, storedItem1 ... storedItem4, 10)
StoredItem1 (10,item1)
StoredItem2 (15,item1)
StoredItem3 (30,item1)
StoredItem4 (54,item1)
What do I put in Destination?? StoredItem?
Fetched Property in Data Model Editor http://www.freeimagehosting.net/uploads/2a68de007d.png
And what do I put in Expression??
Expression in Data Model Editor http://www.freeimagehosting.net/uploads/766ab9af6f.png
The destination is the type of entity you want back.
It sounds like you want a StoredItem back, since that has a price on it.
What I think you want is a fetched property on Item called minPrice, with this expression:
"#min.storedItems.price"
Related
I have a parameter 'type' in a table and it can have multiple values as follows -
human
chimpanzee
orangutan
I have 3 columns related to each type in the table -
human_avg_height, human_avg_weight, human_avg_lifespan
chimpanzee_avg_height, chimpanzee_avg_weight, chimpanzee_avg_lifespan
orangutan_avg_height, orangutan_avg_weight, orangutan_avg_lifespan
So if i select the type as human, the quicksight dashboard should only display the three columns -
human_avg_height, human_avg_weight, human_avg_lifespan
and should not display the following columns -
chimpanzee_avg_height, chimpanzee_avg_weight, chimpanzee_avg_lifespan
orangutan_avg_height, orangutan_avg_weight, orangutan_avg_lifespan
I created the parameter type and in the add calculated fields I am trying to use ifelse to select the columns based on the parameter selected as follows -
ifelse(${type}='human',{human_avg_height}, {human_avg_weight}, {human_avg_lifespan},{function})
I also tried -
ifelse(${type}='human',{{human_avg_height}, {human_avg_weight}, {human_avg_lifespan},{function}})
And -
ifelse(${type}='human',{human_avg_height, human_avg_weight, human_avg_lifespan},{function}})
But none of it is working. What am i doing wrong ?
One way to do this would be to use three different calculated fields, one for all the heights, one for weights and one for lifespan. The heights one would look like this:
ifelse(
${type}='human',{human_avg_height}, ifelse(
${type}='chimpanzee', { chimpanzee_avg_height}, ifelse(
${type}='orangutan',{ orangutan_avg_height},
NULL
)))
Make another calculated field for weights and lifespan and then add these calculated fields to your table, and filter by type.
To make it clear to the viewer what data is present, edit the Title of the visual to include the type:
${type} Data
You have to create one calculated field for each measure using the ifelse with the type to choose the correct vale, but is not necessary to create inner ifelse as skabo did, the if else syntax is ifelse(if, then [, if, then ...], else) so you can define the calculated fields as follows:
avg_height = ifelse(${type}='human', {human_avg_height}, ${type}='chimpanzee', {chimpanzee_avg_height},${type}='orangutan', {orangutan_avg_height}, NULL)
avg_weight = ifelse(${type}='human', {human_avg_weight}, ${type}='chimpanzee', {chimpanzee_avg_weight},${type}='orangutan', {orangutan_avg_weight}, NULL)
avg_lifespan = ifelse(${type}='human', {human_avg_lifespan}, ${type}='chimpanzee', {chimpanzee_avg_lifespan},${type}='orangutan', {orangutan_avg_lifespan}, NULL)
Then use those calculated fields in your visuals.
#Html.DropDownListFor(m => m.field, Model.fieldList, "Select")
I have the code above to get the values of a drop down list from a database. Because the database does not have the select value, I am add it to the list. However, I want to set the selected value to a certain value(variable). How can I do this?
Say I want the selected value to be "WI" and "WI" is in the list. How do i do this? Or how do I specify the #value property?
The DropDownListFor function will first look if there is a selected value in the provided select list. If there are no selected values in the selected list items, it will look at the value of the field that the drop down list is for and attempt to match that to the value of each select list item until it finds the correct one. If any select list item does not have value, it will compare it to the text instead.
Once you have the full list generated, loop through it and find the value you want selected, then set the selected property to true and it should choose that one.
I am using PowerBuilder classic 12.5
am having difficulties in inserting, editing, creating and printing reports.
i have a datawindow, dw_NewEmployee with dataobject, d_newrecord which is update-able.
should i use the columns to insert records through the columns or i
create single line texts on the window object
is the itemchanged event used on columns and rows on dataobject or
on single line texts... I am having trouble figuring out how to implement validation rules.
please give me an example to validate employee ID_Number
I see that you seem confused about the datawindow usage.
Let's try to summarize:
you create a new datawindow d_newrecord (say it is a grid) based on a sql select in your database, say select id_number, name from employee.
in the detail zone of the datawindow (that will be repeated for each record at runtime but that is only once in design), you need to put one column object for each column (here you will have id_number and name) these objects are both to display existing data and receive user input for editing data and inserting new records.
don't forget to set the Rows / Update properties if you need to make the dw updatable.
in the header zone of the datawindow you can have a static text associated to each column that is just here to display the column name, it does not concern table data.
in some window object, you place a datawindow control dw_newemployee where the content of the datawindow will be painted, you set d_newrecord as its dataobject.
you need to set at some point the transaction object of the dw, for example in the open() event of the window:
dw_newemployee.SetTransObject(sqlca)
dw_newemployee.Retreive() //if you are using some retreival arguments, don't forget to include them here
When you want to insert new data in your table (for example with a window button "add"), in the clicked() event of the button you call dw_newemployee.InsertRow(0) to insert at the end.
The ItemChanged() event will be triggered after one cell will be modified, you will be given the row, item (a dwobject) and new data. By choosing the returned value of the event, you can accept or reject the new data.
Here is an example for a field validation in itemchanged() event:
long ll_return_code = 0
string ls_column
ls_column = lower(dwo.name)
choose case ls_column
case "id_number"
if long(data) = 42 THEN
messagebox("validation error", "You cannot use 42 for the ID")
ll_return_code = 1 //reject and stay in cell
end if
case "name"
if data = "foobar" then
messagebox("validation error", "Do not use dummy value...")
ll_return_code = 2 //reject but allow to go elsewhere
end if
end choose
return ll_return_code
I want to clear the toolbar of my grid, but not to the default value of the column. I want to empty all fields.
When I use the
$("#Jqgrid")[0].clearToolbar();
method the toolbar gets the initial default values..
You can choose one from the following two ways.
1) You can temporary change the defaultValue of the searchoptions to "" before call of clearToolbar. You can use setColProp method for example to change column properties (see en example here).
2) Set the value of the the toolbar element manually to "" or to any other value which you want. There are simple way how the ids of the input or select elements of the toolbar are constructed. Let us you have column with the name 'col1' (the corresponding column of colModel has name: 'col1'). Then the id of the element in the filter toolbar will be gs_col1. So you can use
$("#gs_col1").val("");
to clear the field. In more general case if the colname is the variable which hold the value from colModel[i].name you can use
$("#gs_" + $.jgrid.jqID(colname)).val("");
I would be happy to get a good way to get the "table" structure from a plain SQL table.
In my specific case, I need to render JSON structure used by Google Visualization API "datatable" object:
http://code.google.com/apis/chart/interactive/docs/reference.html#DataTable
However, having an example in HTML would help either.
My "source" is a plain SQL table of "DailySales": its columns are "Day" (date), "Product" and "DailySaleTotal" (daily sale for that product). Please recall that my "model" reflects the 3-column table above.
The table columns should be "products" (suppose we have very small number of such). Each row should represent a specific date, and the row data are the actual sales for that day.
Date Product1 Product2 Product3
01/01/2012 30 50 60
01/02/2012 35 3 15
I was trying to use nested #{list} tags in a template, but unfortunately I failed to find a natural way to provide a template with a "list" to represent the "row data".
Of course, I can build a "helper object" in Java that will build a list of the "sales data" items per date - but this looks very weird to me.
I would be thankful to anyone who can provide an elegant solution.
Max
When you load your model order it by date and product name. Then in your controller build a map with date as index and list of model objects that have the same date as value of the map
Then in your template you have a first list iteration on map keys for the rows and a second list iteration on the list value for the columns.
Something like
[
#{list modelMap.keys, as: 'date'}
[${date},#{list modelMap.get(date), as: 'product'}${product.dailySaleTotal}#{ifnot product_isLast},#{/ifnot}#{/list}]#{ifnot date_isLast},#{/ifnot}
#{/list}
]
you can then adapt your json rendering to the exact structure you want to have. Here it is an array of arrays.
Instead of generating the JSON yourself, like Seb suggested, you can generate it:
private static Result queryToJsonResult(String sql) {
SqlQuery sqlQuery = Ebean.createSqlQuery(sql);
return ok(Json.toJson(sqlQuery.findList()));
}