javax.script
Class ScriptEngineManager

java.lang.Object
  javax.script.ScriptEngineManager

public class ScriptEngineManager
extends java.lang.Object

See Javadoc of Java Scripting API

Field Summary

protected java.util.HashSet	engineSpis Stores all instances of classes which implements ScriptEngineFactory which are found in resources META-INF/services/javax.script.ScriptEngineFactory
protected java.util.HashMap	extensionAssocitions Stores file extensions with an associated ScriptEngineFactory
protected Bindings	globalscope Stores the namespace associated with GLOBAL_SCOPE
protected java.util.HashMap	mimeTypeAssociations Stores MIME types with an associated ScriptEngineFactory
protected java.util.HashMap	nameAssociations Stores language names with an associated ScriptEngineFactory

Constructor Summary

ScriptEngineManager()
Constructs ScriptEngineManager and initializes it.

ScriptEngineManager(java.lang.ClassLoader loader)

Method Summary

java.lang.Object	get(java.lang.String key) Retrieves the associated value for the spefied key in the GLOBAL_SCOPE
Bindings	getBindings() Retrieves the bindings corresponds to GLOBAL_SCOPE.
ScriptEngine	getEngineByExtension(java.lang.String extension) Retrieves a new instance of a ScriptingEngine for the specified extension of a scirpt file.
ScriptEngine	getEngineByMimeType(java.lang.String mimeType) Retrieves new instance the ScriptingEngine for a specifed MIME type.
ScriptEngine	getEngineByName(java.lang.String name) Retrieves a new instance of a ScriptEngine the specified descriptieve name.
java.util.List	getEngineFactories() Retrieves an array of instances of ScriptEngineFactory class which are found by the discovery mechanism.
void	put(java.lang.String key, java.lang.Object value) Associates the specifed value with the specified key in GLOBAL_SCOPE.
void	registerEngineExtension(java.lang.String extension, ScriptEngineFactory factory) Register a extension with a ScriptEngineFactory.
void	registerEngineMimeType(java.lang.String mimeType, ScriptEngineFactory factory) Registers a MIME type with a ScriptEngineFactory.
void	registerEngineName(java.lang.String name, ScriptEngineFactory factory) Registers descriptive name with a ScriptEngineFactory.
void	setBindings(Bindings bindings) Sets the GLOBAL_SCOPE value to the specified namespace.

Methods inherited from class java.lang.Object

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

Field Detail

engineSpis

protected java.util.HashSet engineSpis

Stores all instances of classes which implements ScriptEngineFactory which are found in resources META-INF/services/javax.script.ScriptEngineFactory

nameAssociations

protected java.util.HashMap nameAssociations

Stores language names with an associated ScriptEngineFactory

extensionAssocitions

protected java.util.HashMap extensionAssocitions

Stores file extensions with an associated ScriptEngineFactory

mimeTypeAssociations

protected java.util.HashMap mimeTypeAssociations

Stores MIME types with an associated ScriptEngineFactory

globalscope

protected Bindings globalscope

Stores the namespace associated with GLOBAL_SCOPE

Constructor Detail

ScriptEngineManager

public ScriptEngineManager()

Constructs ScriptEngineManager and initializes it.

ScriptEngineManager

public ScriptEngineManager(java.lang.ClassLoader loader)

Method Detail

get

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

Retrieves the associated value for the spefied key in the GLOBAL_SCOPE

Parameters:

key - the associated key of the value stored in the GLOBAL_SCOPE

Returns:

the value associated with the specifed key

getEngineByExtension

public ScriptEngine getEngineByExtension(java.lang.String extension)

Retrieves a new instance of a ScriptingEngine for the specified extension of a scirpt file. Returns null if no suitable ScriptingEngine is found.

Parameters:

extension - the specified extension of a script file

Returns:

a new instance of a ScriptingEngine which supports the specified script file extension

getEngineByMimeType

public ScriptEngine getEngineByMimeType(java.lang.String mimeType)

Retrieves new instance the ScriptingEngine for a specifed MIME type. Returns null if no suitable ScriptingEngine is found.

Parameters:

mimeType - the specified MIME type

Returns:

a new instance of a ScriptingEngine which supports the specified MIME type

getEngineByName

public ScriptEngine getEngineByName(java.lang.String name)

Retrieves a new instance of a ScriptEngine the specified descriptieve name. Returns null if no suitable ScriptEngine is found.

Parameters:

name - the descriptive name

Returns:

a new instance of a ScriptEngine which supports the specifed descriptive name

getEngineFactories

public java.util.List getEngineFactories()

Retrieves an array of instances of ScriptEngineFactory class which are found by the discovery mechanism.

Returns:

a list of all discovered ScriptEngineFactory instances

getBindings

public Bindings getBindings()

Retrieves the bindings corresponds to GLOBAL_SCOPE.

Returns:

the bindings of GLOBAL_SCOPE

put

public void put(java.lang.String key,
                java.lang.Object value)

Associates the specifed value with the specified key in GLOBAL_SCOPE.

Parameters:

key - the associated key for specified value

value - the associated value for the specified key

registerEngineExtension

public void registerEngineExtension(java.lang.String extension,
                                    ScriptEngineFactory factory)

Register a extension with a ScriptEngineFactory. It overrides any such association discovered previously.

Parameters:

extension - the extension associated with the specified ScriptEngineFactory class

factory - the ScriptEngineFactory associated with the specified extension

registerEngineName

public void registerEngineName(java.lang.String name,
                               ScriptEngineFactory factory)

Registers descriptive name with a ScriptEngineFactory. It overrides any associations discovered previously.

Parameters:

name - a descriptive name associated with the specifed ScriptEngineFactory class

factory - the ScriptEngineFactory associated with the specified descriptive name

registerEngineMimeType

public void registerEngineMimeType(java.lang.String mimeType,
                                   ScriptEngineFactory factory)

Registers a MIME type with a ScriptEngineFactory. It overrides any associations discovered previously.

Parameters:

mimeType - the MIME type associated with specified ScriptEngineFactory class

factory - the ScriptEngineFactory associated with the specified MIME type

setBindings

public void setBindings(Bindings bindings)

Sets the GLOBAL_SCOPE value to the specified namespace.

Parameters:

bindings - the namespace to be stored in GLOBAL_SCOPE