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package com.sun.jdi.connect;

import java.io.IOException;
import java.util.Map;

import com.sun.jdi.VirtualMachine;
import com.sun.jdi.event.VMStartEvent;


A connector which can launch a target VM before connecting to it.

Author:Gordon Hirsch
Since: 1.3
/**
 * A connector which can launch a target VM before connecting to it.
 *
 * @author Gordon Hirsch
 * @since  1.3
 */
public interface LaunchingConnector extends Connector {

    
Launches an application and connects to its VM. Properties
of the launch (possibly including options,
main class, and arguments) are specified in
arguments. The argument map associates argument name strings to instances of Argument. The default argument map for a connector can be obtained through Connector.defaultArguments. Argument map values can be changed, but map entries should not be added or deleted. 
A target VM launched by a launching connector is not guaranteed to be stable until after the VMStartEvent has been received. 

Important note: If a target VM is launched through this funcctions, its output and error streams must be read as it executes. These streams are available through the Process object returned by VirtualMachine.process. If the streams are not periodically read, the target VM will stop executing when the buffers for these streams are filled. 
Params:
  • arguments – the argument map to be used in launching the VM.
Throws:
  • IOException – when unable to launch.
Specific exceptions are dependent on the Connector implementation
in use.
  • IllegalConnectorArgumentsException – when one of the
connector arguments is invalid.
  • VMStartException – when the VM was successfully launched, but
terminated with an error before a connection could be established.
Returns:the VirtualMachine mirror of the target VM.
/**
     * Launches an application and connects to its VM. Properties
     * of the launch (possibly including options,
     * main class, and arguments) are specified in
     * <code>arguments</code>.
     * The argument map associates argument name strings to instances
     * of {@link Connector.Argument}. The default argument map for a
     * connector can be obtained through {@link Connector#defaultArguments}.
     * Argument map values can be changed, but map entries should not be
     * added or deleted.
     * <p>A target VM launched by a launching connector is not
     * guaranteed to be stable until after the {@link VMStartEvent} has been
     * received.
     * <p>
     * <b>Important note:</b> If a target VM is launched through this
     * funcctions, its output and error streams must be read as it
     * executes. These streams are available through the
     * {@link java.lang.Process Process} object returned by
     * {@link VirtualMachine#process}. If the streams are not periodically
     * read, the target VM will stop executing when the buffers for these
     * streams are filled.
     *
     * @param arguments the argument map to be used in launching the VM.
     * @return the {@link VirtualMachine} mirror of the target VM.
     * @throws java.io.IOException when unable to launch.
     * Specific exceptions are dependent on the Connector implementation
     * in use.
     * @throws IllegalConnectorArgumentsException when one of the
     * connector arguments is invalid.
     * @throws VMStartException when the VM was successfully launched, but
     * terminated with an error before a connection could be established.
     */
    VirtualMachine launch(Map<String,? extends Connector.Argument> arguments)
        throws IOException, IllegalConnectorArgumentsException,
               VMStartException;
}