org.protelis.vm.impl

Class SimpleExecutionEnvironment

java.lang.Object

org.protelis.vm.impl.SimpleExecutionEnvironment

All Implemented Interfaces:

ExecutionEnvironment

public final class SimpleExecutionEnvironment
extends java.lang.Object
implements ExecutionEnvironment

Simple implementation of ExecutionEnvironment.

Constructor Summary

Constructors

Constructor and Description
SimpleExecutionEnvironment()

Method Summary

Modifier and Type	Method and Description
void	commit() Called just after the VM is executed, to finalize information of the execution for the environment.
java.lang.Object	get(java.lang.String id)
java.lang.Object	get(java.lang.String id, java.lang.Object defaultValue)
boolean	has(java.lang.String id)
java.util.Set<java.lang.String>	keySet()
boolean	put(java.lang.String id, java.lang.Object v)
java.lang.Object	remove(java.lang.String id)
void	setup() Called just before the VM is executed, to enable and preparations needed in the environment.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SimpleExecutionEnvironment

public SimpleExecutionEnvironment()

Method Detail

has

public boolean has(java.lang.String id)

Specified by:

has in interface ExecutionEnvironment

Parameters:

id - the variable name

Returns:

true if the variable is present

get

public java.lang.Object get(java.lang.String id)

Specified by:

get in interface ExecutionEnvironment

Parameters:

id - the variable name

Returns:

the value of the variable if present, false otherwise

get

public java.lang.Object get(java.lang.String id,
                            java.lang.Object defaultValue)

Specified by:

get in interface ExecutionEnvironment

Parameters:

id - the variable name

defaultValue - a parameterizable default value

Returns:

the value of the variable if present, defaultValue otherwise

put

public boolean put(java.lang.String id,
                   java.lang.Object v)

Specified by:

put in interface ExecutionEnvironment

Parameters:

id - the variable name

v - the value that should be associated with id

Returns:

true if there was previously a value associated with id, and false if not.

remove

public java.lang.Object remove(java.lang.String id)

Specified by:

remove in interface ExecutionEnvironment

Parameters:

id - the variable name

Returns:

Returns the value to which this map previously associated the key, or null if the map contained no mapping for the key.

keySet

public java.util.Set<java.lang.String> keySet()

Specified by:

keySet in interface ExecutionEnvironment

Returns:

An unmodifiable set of the keys in the ExecutionEnvironment

commit

public void commit()

Description copied from interface: ExecutionEnvironment

Called just after the VM is executed, to finalize information of the execution for the environment.

Specified by:

commit in interface ExecutionEnvironment

setup

public void setup()

Description copied from interface: ExecutionEnvironment

Called just before the VM is executed, to enable and preparations needed in the environment.

Specified by:

setup in interface ExecutionEnvironment