Adding Message Text Strings to an asadmin Subcommand

A message text string provides useful information to the user about an asadmin subcommand or a parameter.

To provide internationalization support for the text string of a subcommand or parameter, annotate the declaration of the subcommand or parameter with the org.glassfish.api.I18n annotation. The @I18n annotation identifies the resource from the resource bundle that is associated with your implementation.

To add message text strings to an asadmin subcommand, create a plain text file that is named LocalStrings.properties to contain the strings. Define each string on a separate line of the file as follows:

key=string

key

A key that maps the string to a subcommand or a parameter. The format to use for key depends on the target to which the key applies and whether the target is annotated with the @I18n annotation. See the following table.

Target	Format
Subcommand or parameter with the @I18n annotation	subcommand-name.command.resource-name
Subcommand without the @I18n annotation	subcommand-name.command
Parameter without the @I18n annotation	subcommand-name.command.param-name

The replaceable parts of these formats are as follows:

subcommand-name

The name of the subcommand.

resource-name

The name of the resource that is specified in the@I18n annotation.

param-name

The name of the parameter.

string

A string without quotes that contains the text of the message.

To display the message strings to users, you must provide code in your implementation of the execute method to display the text. For more information about implementing the execute method, see Enabling an asadmin Subcommand to Run.

Example 4–3 Adding Message Strings to an asadmin Subcommand

This example shows the code for adding message strings to the create-mycontainer subcommand as follows:

• The create-mycontainer subcommand is associated with the message Creates a custom container. No internationalization support is provided for this message.

• The --originator parameter is associated with the message The originator of the container. No internationalization support is provided for this message.

• The --description parameter is associated with the message that is contained in the resource mydesc, for which internationalization is provided. This resource contains the message text A description of the container.

• The --enabled parameter is associated with the message Whether the container is enabled or disabled. No internationalization support is provided for this message.

• The --containername parameter is associated with the message The container name. No internationalization support is provided for this message.

The addition of the parameters originator, description, enabled and containername to the subcommand is shown in Example 4–2.

package com.example.mycontainer;

import org.glassfish.api.admin.AdminCommand;
...
import org.glassfish.api.I18n;
import org.glassfish.api.Param;
import org.jvnet.hk2.annotations.Service;
...
import org.jvnet.hk2.annotations.Scoped;
import org.jvnet.hk2.component.PerLookup;

/**
 * Sample subcommand
 */
@Service(name="create-mycontainer")
@Scoped(PerLookup.class)
public Class CreateMycontainer implements AdminCommand {

    …

    @Param
    String originator;

    @Param(name="description", optional=true)
    @I18n("mydesc")
    String mycontainerDescription
   
    @Param (acceptableValues="true,false", defaultValue="false", optional=true)
    String enabled
    
    @Param(primary=true)
    String containername;
 …

}

The following message text strings are defined in the file LocalStrings.properties for use by the subcommand:

create-mycontainer.command=Creates a custom container
create-mycontainer.command.originator=The originator of the container 
create-mycontainer.command.mydesc=A description of the container
create-mycontainer.command.enabled=Whether the container is enabled or disabled
create-mycontainer.command.containername=The container name