Return a negative integer, zero, or a positive integer if this object is less than, equal to, or greater than the specified object:
this < that => <0
this == that => 0
this > that => >0
This method may also be accessed via the < <= <=> >= and >
shortcut operators. If not overridden the default
implementation compares the toStr
representations. Also see docLang.
Examples:
3.compare(8) => -1
8.compare(3) => 1
8.compare(8) => 0
3 <=> 8 => -1 // shortcut for 3.compare(8)
Compare this object to the specified for equality. This
method may be accessed via the == and != shortcut operators.
If not overridden the default implementation compares for
reference equality using the === operator. If this method
is overridden, then hash() must also be overridden such that
any two objects which return true for equals() must return
the same value for hash(). This method must accept null and
return false.
Return a unique hashcode for this object. If a class overrides hash() then it must ensure if equals() returns true for any two objects then they have same hash code.
Get an immutable representation of this instance or throw NotImmutableErr if this object cannot be represented as an immutable:
Return a string representation of this object.
Trap a dynamic call for handling. Dynamic calls are invoked with the -> shortcut operator:
a->x a.trap("x", null)
a->x() a.trap("x", null)
a->x = b a.trap("x", [b])
a->x(b) a.trap("x", [b])
a->x(b, c) a.trap("x", [b, c])
The default implementation provided by Obj attempts to use reflection. If name maps to a method, it is invoked with the specified arguments. If name maps to a field and args.size is zero, get the field. If name maps to a field and args.size is one, set the field and return args[0]. Otherwise throw UnknownSlotErr.
This method called whenever an it-block is applied to an
object. The default implementation calls the function with this,
and then returns this.
StaticechoWrite x.toStr to standard output followed by newline. If x
is null then print "null". If no argument is provided then
print an empty line.
Optionalx: JsObjStatichaystackPerform Haystack HTTP API call to given Str op name and with given request grid (can be anything acceptable toGrid). If the checked flag is true and server returns an error grid, then raise haystack::CallErr, otherwise return the grid itself. Result is returned as Grid. Also see haystack::Client.call.
StatichaystackEvaluate an Axon expression in a remote server over a haystack connector. The remote server must be a SkySpark server which supports the "eval" REST op with an Axon expression. This function blocks while the network request is made. The result is always returned as a Grid using the same rules as haystack::Etc.toGrid.
The expression to evaluate in the remote server may capture
variables from the local scope. If these variables are
atomic types, then they are captured as defined by local
scope and serialized to the remote server. Pass {debug} for
opts to dump to stdout the actual expr with serialized
scope.
Options:
debug: dumps full expr with seralized scope to stdoutevalTimeout: duration number to override remote project's
default evalTimeoutExamples:
read(haystackConn).haystackEval(3 + 4)
read(haystackConn).haystackEval(readAll(site))
read(haystackConn).haystackEval(readAll(kw).hisRead(yesterday))
StatichaystackPerform Haystack REST API "hisRead" call to read history data for the record identified by the id (must be Ref). The range is any string encoding supported by the REST API or any value supported by toDateSpan. Return results as grid with "ts" and "val" column.
StatichaystackInvoke a remote action on the given Haystack connector and remote entity. The id must be a Ref of the remote entity's identifier and action is a Str action name. If args are specified, then they should be a Dict keyed by parameter name.
StatichaystackStatichaystackStatichaystackPerform Haystack REST API call to read single entity with filter. The filter is an expression like readAll. Return result as dict. If the record is not found, then return null or raise UnknownRecErr based on checked flag. Also see haystack::Client.read.
StatichaystackPerform Haystack REST API call to read all entities with filter. The filter is an expression like readAll. Return results as grid. Also see haystack::Client.readAll.
StatichaystackPerform Haystack HTTP API call to read a record by its unique identifier. Return result as dict. If the record is not found, then return null or raise UnknownRecErr based on checked flag. Also see haystack::Client.readById.
StatichaystackPerform Haystack HTTP API call 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. Also see haystack::Client.readByIds.
StatichaystackStatichaystackStaticmake
Haystack connector functions