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org.openide.modules
Class ModuleInfo

java.lang.Object
  org.openide.modules.ModuleInfo

public abstract class ModuleInfo
extends Object

General information about a module. Immutable from an API perspective, serves as a source of information only. All instances may be gotten via lookup. It is forbidden for module code to register instances of this class.

Since:: 1.24

Field Summary

static String PROP_ENABLED
          Property name fired when enabled or disabled.

Constructor Summary

protected ModuleInfo()
          Do-nothing constructor.

Method Summary

void addPropertyChangeListener(PropertyChangeListener l)
          Add a change listener.

protected void firePropertyChange(String prop, Object old, Object nue)
          Indicate that something changed, as a subclass.

abstract Object getAttribute(String attr)
          Get some attribute, for example OpenIDE-Module-Name.

String getBuildVersion()
          The indentification of the build version.

ClassLoader getClassLoader()
          Get a class loader associated with this module that can load classes defined in the module.

abstract String getCodeName()
          The full code name, with release version after slash if defined.

abstract String getCodeNameBase()
          The code name of the module, sans release version.

abstract int getCodeNameRelease()
          The release version (-1 if undefined).

abstract Set getDependencies()
          Get a list of all dependencies this module has.

String getDisplayName()
          Get a localized display name, if available.

String getImplementationVersion()
          The implementation version, or null.

abstract Object getLocalizedAttribute(String attr)
          Get an attribute with localization.

String[] getProvides()
          Get a set of capabilities which this module provides to others that may require it.

abstract SpecificationVersion getSpecificationVersion()
          The specification version, or null.

abstract boolean isEnabled()
          Whether the module is currently enabled.

abstract boolean owns(Class clazz)
          Determine if the provided class was loaded as a part of this module, and thus will only be loadable later if this module is enabled.

void removePropertyChangeListener(PropertyChangeListener l)
          Remove a change listener.

Methods inherited from class java.lang.Object

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

Field Detail

PROP_ENABLED

public static final String PROP_ENABLED

Property name fired when enabled or disabled. For changes in other attributes, property name can match manifest attribute name, for example OpenIDE-Module-Specification-Version after upgrade.

See Also:: Constant Field Values

Constructor Detail

ModuleInfo

protected ModuleInfo()

Do-nothing constructor.

Method Detail

getCodeNameBase

public abstract String getCodeNameBase()

The code name of the module, sans release version.

getCodeNameRelease

public abstract int getCodeNameRelease()

The release version (-1 if undefined).

getCodeName

public abstract String getCodeName()

The full code name, with release version after slash if defined.

getDisplayName

public String getDisplayName()

Get a localized display name, if available. As a fallback provides the code name (base). Convenience method only.

getSpecificationVersion

public abstract SpecificationVersion getSpecificationVersion()

The specification version, or null.

getImplementationVersion

public String getImplementationVersion()

The implementation version, or null. Convenience method only.

getBuildVersion

public String getBuildVersion()

The indentification of the build version. Usually build number. If no specific build version is provided then this method delegates to getImplementationVersion().

Returns:: textual identification of build version or the value for implementation version
Since:: 4.18

isEnabled

public abstract boolean isEnabled()

Whether the module is currently enabled.

getAttribute

public abstract Object getAttribute(String attr)

Get some attribute, for example OpenIDE-Module-Name. Not all manifest attributes need be supported here. Attributes not present in the manifest may be available.

getLocalizedAttribute

public abstract Object getLocalizedAttribute(String attr)

Get an attribute with localization. That is, if there is a suitable locale variant of the attribute name, return its value rather than the value of the base attribute.

addPropertyChangeListener

public final void addPropertyChangeListener(PropertyChangeListener l)

Add a change listener.

removePropertyChangeListener

public final void removePropertyChangeListener(PropertyChangeListener l)

Remove a change listener.

firePropertyChange

protected final void firePropertyChange(String prop,
                                        Object old,
                                        Object nue)

Indicate that something changed, as a subclass. Changes are fired synchronously (but this method need not be called synchronously).

getDependencies

public abstract Set getDependencies()

Get a list of all dependencies this module has.

owns

public abstract boolean owns(Class clazz)

Determine if the provided class was loaded as a part of this module, and thus will only be loadable later if this module is enabled. If in doubt, return false.

Since:: 1.28

getClassLoader

public ClassLoader getClassLoader()
                           throws IllegalArgumentException

Get a class loader associated with this module that can load classes defined in the module.

You can only call this method on an enabled module, and the result may change if the module is disabled and reënabled.

The class loader may or may not be shared with any other module, or be the application's startup class loader, etc.

For reasons of backward compatibility, this method is not abstract but will throw UnsupportedOperationException if not overridden. The instances obtainable from default lookup will override the method to return a real value.

Returns:: a module class loader
Throws:: IllegalArgumentException - if this module is disabled
Since:: 4.21

getProvides

public String[] getProvides()

Get a set of capabilities which this module provides to others that may require it. The default implementation returns an empty array.

Returns:: an array of tokens, possibly empty but not null
Since:: 2.3