A method can take positional arguments in a comma-separated list. If you omit pw you must specify the placeholder ‘ ‘ character. Those classes, in turn, can extend other classes. You use class parameters for the following purposes:. The following example shows a very simple concurrent server that spawns off a child job whenever it detects a connection from a client.

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Minimum Supported Version

At this point, you can read or write to the TCP device. This is because compression is applied after all other translation except encryption and decompression is applied before all other translation except encryption. The processes at both ends of the connection must use the same port number. In most cases, that keyword is cache ObjectScript.

In classes provided by InterSystems, all parameters are defined in all capitals, by convention, but your code is not required to do this. You use class parameters for the following purposes:. The CodeMode keyword enables you to define other, special kinds of methods:. When both are off, a packet may contain multiple writes, and a transmission may contain multiple packets.

Valid values range from 30 to The TCP device has one attached socket. A string of the form TCP followed by some number of numeric digits. The fourth parameter terminators is omitted.


For example, some of the methods associated with the DOB property are:. A class query defines an SQL query that intersyshems be used by the class and specifies a class to use as a container for the query. See below for details.

You can use the SelectPublishExportand Import methods to have a master job accept an incoming connection and pass the connected device to a slave job. SampleClass is the full class name, MyApp.

Packet Mode – Caché I/O Device Guide – Caché & Ensemble

If you exceed the maximum string size characters without flushing the buffer. It marks this parameter as internal, which suppresses it from display in the class documentation.

The following shows a class with several parameters:. For this property, the maximum allowed value is There is no predefined mnemonic space for TCP bindings.

Main is the package name, and SampleClass is the short class name. Determines whether Lntersystems should reinitialize the timeout period when data is received. The Fork and Select methods allow you to have a single job handling both accepting new connections and reading data from a connected TCP device at the same time. Specifies that the property is not intersytsems in the database. By using IPv4 abbreviation rules, you can specify the IPv6 loopback address as “:: The business operation receives a message from within the production, looks up the message type, and executes the appropriate method in the outbound TCP adapter to transmit the data over TCP.


Minimum Supported Version | InterSystems

When you define a property and you specify its type as a data type class, you have special options for defining and working with that property, as described in this section. Windows, AIX, and Linux only Allows you to set a keepalive timer for this device that is different than the system default.

That is, the hostname and port parameters are ignored retaining the pacekt OPEN command values and the mode and terminators parameters are updated. If you do, your changes are ignored, and the original class name is shown when you next open the class definition. Many of them are optional and are not started unless needed or configured.

The default for Send Immediate Mode is off. Similarly, to refer to a property of an object-valued property, use an expression like this:.