type

Client

class Client : Obj

Client manages a network connection to a haystack server.

fields

uri

URI of endpoint such as "http://host/api/myProj/".

methods

about

Call "about" operation to query server summary info.

call

Call the given REST operation with its request grid and return the response grid.

close

Close the session by sending the close op.

commit

Commit a set of diffs.

eval

Evaluate an Axon expression and return results as Grid.

open

Open with URI of project such as "http://host/api/myProj/".

read

Call "read" operation to read a record that matches the given filter.

readAll

Call "read" operation to read a record all recs which match the given filter.

readById

Call "read" operation to read a record by its identifier.

readByIds

Call "read" operation to read a list of records by their identifiers.

toStr

Return uri.toStr

Slot Details

about

Dict about()

Call "about" operation to query server summary info. Also see HTTP API.

call

Grid call(Str op, Grid? req := null, Bool checked := true)

Call the given REST operation with its request grid and return the response grid. If req is null, then an empty grid used for request. If the checked flag is true and server returns an error grid, then raise CallErr, otherwise return the grid itself.

close

Void close()

Close the session by sending the close op.

commit

Grid commit(Grid req)

Commit a set of diffs. The req parameter must be a grid with a "commit" tag in the grid.meta. The rows are the items to commit. Return result as Grid or or raise CallErr if server returns error grid.

Also see HTTP API.

Examples:

// add new record
tags := ["site":Marker.val, "dis":"Example Site"])
toCommit := Etc.makeDictGrid(["commit":"add"], tags)
client.commit(toCommit)

// update dis tag
changes := ["id": orig->id, "mod":orig->mod, "dis": "New dis"]
toCommit := Etc.makeDictGrid(["commit":"update"], changes)
client.commit(toCommit)

eval

Grid eval(Str expr)

Evaluate an Axon expression and return results as Grid. Raise CallErr if server returns error grid. Also see HTTP API.

open

static Client open(Uri uri, Str username, Str password, [Str:Obj]? opts := null)

Open with URI of project such as "http://host/api/myProj/". Throw IOErr for network/connection error or AuthErr if credentials are not authenticated.

read

Dict? read(Str filter, Bool checked := true)

Call "read" operation to read a record that matches the given filter. If there is more than one record, then it is undefined which one is returned. If there are no matches then return null or raise UnknownRecException based on checked flag. Raise CallErr if server returns error grid. Also see HTTP API.

readAll

Grid readAll(Str filter)

Call "read" operation to read a record all recs which match the given filter. Raise CallErr if server returns error grid. Also see HTTP API.

readById

Dict? readById(Obj id, Bool checked := true)

Call "read" operation to read a record by its identifier. If the record is not found then return null or raise UnknownRecException based on checked flag. Raise CallErr if server returns error grid. Also see HTTP API.

readByIds

Grid readByIds(Obj[] ids, Bool checked := true)

Call "read" operation to read a list of records by their identifiers. Return a grid where each row of the grid maps to the respective id list (indexes line up). If checked is true and any one of the ids cannot be resolved then raise UnknownRecErr for first id not resolved. If checked is false, then each id not found has a row where every cell is null. Raise CallErr if server returns error grid. Also see HTTP API.

toStr

virtual override Str toStr()

Return uri.toStr

uri

const Uri uri

URI of endpoint such as "http://host/api/myProj/". This URI always ends in a trailing slash.