org.eclipse.platform/org.eclipse.equinox.registry/3.8.600 : org/eclipse/core/runtime/IConfigurationElement.java

IConfigurationElement
http://www.eclipse.org/platform: Extension Registry Support (Eclipse Foundation)
Eclipse Public License - v 2.0
Copyright (c) 2000, 2009 IBM Corporation and others.
This program and the accompanying materials
are made available under the terms of the Eclipse Public License 2.0
which accompanies this distribution, and is available at
https://www.eclipse.org/legal/epl-2.0/
SPDX-License-Identifier: EPL-2.0
Contributors:
    IBM Corporation - initial API and implementation
/*******************************************************************************
 * Copyright (c) 2000, 2009 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.core.runtime;

A configuration element, with its attributes and children,
directly reflects the content and structure of the extension section
within the declaring plug-in's manifest (plugin.xml) file.

This interface also provides a way to create executable extension
objects.

 These registry objects are intended for relatively short-term use. Clients that deal with these objects must be aware that they may become invalid if the declaring plug-in is updated or uninstalled. If this happens, all methods except isValid() will throw InvalidRegistryObjectException. For configuration element objects, the most common case is code in a plug-in dealing with extensions contributed to one of the extension points it declares. Code in a plug-in that has declared that it is not dynamic aware (or not declared anything) can safely ignore this issue, since the registry would not be modified while it is active. However, code in a plug-in that declares that it is dynamic aware must be careful when accessing the extension and configuration element objects because they become invalid if the contributing plug-in is removed. Similarly, tools that analyze or display the extension registry are vulnerable. Client code can pre-test for invalid objects by calling isValid(), which never throws this exception. However, pre-tests are usually not sufficient because of the possibility of the extension or configuration element object becoming invalid as a result of a concurrent activity. At-risk clients must treat InvalidRegistryObjectException as if it were a checked exception.
Also, such clients should probably register a listener with the extension registry
so that they receive notification of any changes to the registry.

This interface can be used without OSGi running.

This interface is not intended to be implemented by clients.

@noimplement This interface is not intended to be implemented by clients./**
 * A configuration element, with its attributes and children,
 * directly reflects the content and structure of the extension section
 * within the declaring plug-in's manifest (<code>plugin.xml</code>) file.
 * <p>
 * This interface also provides a way to create executable extension
 * objects.
 * </p>
 * <p>
 * These registry objects are intended for relatively short-term use. Clients that
 * deal with these objects must be aware that they may become invalid if the
 * declaring plug-in is updated or uninstalled. If this happens, all methods except
 * {@link #isValid()} will throw {@link InvalidRegistryObjectException}.
 * For configuration element objects, the most common case is code in a plug-in dealing
 * with extensions contributed to one of the extension points it declares.
 * Code in a plug-in that has declared that it is not dynamic aware (or not
 * declared anything) can safely ignore this issue, since the registry
 * would not be modified while it is active. However, code in a plug-in that
 * declares that it is dynamic aware must be careful when accessing the extension
 * and configuration element objects because they become invalid if the contributing
 * plug-in is removed. Similarly, tools that analyze or display the extension registry
 * are vulnerable. Client code can pre-test for invalid objects by calling {@link #isValid()},
 * which never throws this exception. However, pre-tests are usually not sufficient
 * because of the possibility of the extension or configuration element object becoming
 * invalid as a result of a concurrent activity. At-risk clients must treat
 * <code>InvalidRegistryObjectException</code> as if it were a checked exception.
 * Also, such clients should probably register a listener with the extension registry
 * so that they receive notification of any changes to the registry.
 * </p><p>
 * This interface can be used without OSGi running.
 * </p><p>
 * This interface is not intended to be implemented by clients.
 * </p>
 * @noimplement This interface is not intended to be implemented by clients.
 */
public interface IConfigurationElement {
	Creates and returns a new instance of the executable extension
identified by the named attribute of this configuration element.
The named attribute value must contain a fully qualified name
of a Java class. The class can either refer to a class implementing
the executable extension or to a factory capable of returning the
executable extension.

The specified class is instantiated using its 0-argument public constructor.

Then the following checks are done:
 If the specified class implements the IExecutableExtension interface, the method IExecutableExtension.setInitializationData(IConfigurationElement, String, Object) is called, passing to the object the configuration information that was used to create it. 
 If the specified class implements IExecutableExtensionFactory interface, the method IExecutableExtensionFactory.create() is invoked. 

Unlike other methods on this object, invoking this method may activate
the plug-in.

Params: propertyName – the name of the property
Throws: CoreException – if an instance of the executable extension
  could not be created for any reason
InvalidRegistryObjectException – if this configuration element is no longer valid
See Also: IExecutableExtension.setInitializationData(IConfigurationElement, String, Object)
IExecutableExtensionFactory
Returns: the executable instance/**
	 * Creates and returns a new instance of the executable extension
	 * identified by the named attribute of this configuration element.
	 * The named attribute value must contain a fully qualified name
	 * of a Java class. The class can either refer to a class implementing
	 * the executable extension or to a factory capable of returning the
	 * executable extension.
	 * <p>
	 * The specified class is instantiated using its 0-argument public constructor.
	 * <p>
	 * Then the following checks are done:<br>
	 * If the specified class implements the {@link IExecutableExtension}
	 * interface, the method {@link IExecutableExtension#setInitializationData(IConfigurationElement, String, Object)}
	 * is called, passing to the object the configuration information that was used to create it.
	 * <p>
	 * If the specified class implements {@link IExecutableExtensionFactory}
	 * interface, the method {@link IExecutableExtensionFactory#create()}
	 * is invoked.
	 * </p>
	 * <p>
	 * Unlike other methods on this object, invoking this method may activate
	 * the plug-in.
	 * </p>
	 *
	 * @param propertyName the name of the property
	 * @return the executable instance
	 * @exception CoreException if an instance of the executable extension
	 *   could not be created for any reason
	 * @see IExecutableExtension#setInitializationData(IConfigurationElement, String, Object)
	 * @see IExecutableExtensionFactory
	 * @throws InvalidRegistryObjectException if this configuration element is no longer valid
	 */
	public Object createExecutableExtension(String propertyName) throws CoreException;

	Returns the named attribute of this configuration element, or
null if none.

The names of configuration element attributes
are the same as the attribute names of the corresponding XML element.
For example, the configuration markup
<bg pattern="stripes"/>


corresponds to a configuration element named "bg"
with an attribute named "pattern"
with attribute value "stripes".

 Note that any translation specified in the plug-in manifest
file is automatically applied.

Params: name – the name of the attribute
Throws: InvalidRegistryObjectException – if this configuration element is no longer valid
Returns: attribute value, or null if none/**
	 * Returns the named attribute of this configuration element, or
	 * <code>null</code> if none.
	 * <p>
	 * The names of configuration element attributes
	 * are the same as the attribute names of the corresponding XML element.
	 * For example, the configuration markup</p>
	 * <pre>
	 * &lt;bg pattern="stripes"/&gt;
	 * </pre>
	 * <p>
	 * corresponds to a configuration element named <code>"bg"</code>
	 * with an attribute named <code>"pattern"</code>
	 * with attribute value <code>"stripes"</code>.
	 * </p>
	 * <p> Note that any translation specified in the plug-in manifest
	 * file is automatically applied.
	 * </p>
	 *
	 * @param name the name of the attribute
	 * @return attribute value, or <code>null</code> if none
	 * @throws InvalidRegistryObjectException if this configuration element is no longer valid
	 */
	public String getAttribute(String name) throws InvalidRegistryObjectException;

	When multi-language support is enabled, this method returns the named attribute of this
configuration element in the specified locale, or null if none.

The locale matching tries to find the best match between available translations and
the requested locale, falling back to a more generic locale ("en") when the specific
locale ("en_US") is not available.
 If multi-language support is not enabled, this method is equivalent to the method getAttribute(String). 
Params: attrName – the name of the attribute
locale – the requested locale
Throws: InvalidRegistryObjectException – if this configuration element is no longer valid
See Also: getAttribute(String)
IExtensionRegistry.isMultiLanguage()
Returns: attribute value, or null if none
Since: org.eclipse.equinox.registry 3.5/**
	 * When multi-language support is enabled, this method returns the named attribute of this
	 * configuration element in the specified locale, or <code>null</code> if none.
	 * <p>
	 * The locale matching tries to find the best match between available translations and
	 * the requested locale, falling back to a more generic locale ("en") when the specific
	 * locale ("en_US") is not available.
	 * </p><p>
	 * If multi-language support is not enabled, this method is equivalent to the method
	 * {@link #getAttribute(String)}.
	 * </p>
	 * @param attrName the name of the attribute
	 * @param locale the requested locale
	 * @return attribute value, or <code>null</code> if none
	 * @throws InvalidRegistryObjectException if this configuration element is no longer valid
	 * @see #getAttribute(String)
	 * @see IExtensionRegistry#isMultiLanguage()
	 * @since org.eclipse.equinox.registry 3.5
	 */
	public String getAttribute(String attrName, String locale) throws InvalidRegistryObjectException;

	Returns the named attribute of this configuration element, or
null if none.

The names of configuration element attributes
are the same as the attribute names of the corresponding XML element.
For example, the configuration markup
<bg pattern="stripes"/>


corresponds to a configuration element named "bg"
with an attribute named "pattern"
with attribute value "stripes".


Note that any translation specified in the plug-in manifest
file for this attribute is not automatically applied.

Params: name – the name of the attribute
Throws: InvalidRegistryObjectException – if this configuration element is no longer valid
Returns: attribute value, or null if none
Deprecated: The method is equivalent to the getAttribute(String). Contrary to its description, this method returns a translated value. Use the getAttribute(String) method instead./**
	 * Returns the named attribute of this configuration element, or
	 * <code>null</code> if none.
	 * <p>
	 * The names of configuration element attributes
	 * are the same as the attribute names of the corresponding XML element.
	 * For example, the configuration markup</p>
	 * <pre>
	 * &lt;bg pattern="stripes"/&gt;
	 * </pre>
	 * <p>
	 * corresponds to a configuration element named <code>"bg"</code>
	 * with an attribute named <code>"pattern"</code>
	 * with attribute value <code>"stripes"</code>.
	 * </p>
	 * <p>
	 * Note that any translation specified in the plug-in manifest
	 * file for this attribute is <b>not</b> automatically applied.
	 * </p>
	 *
	 * @param name the name of the attribute
	 * @return attribute value, or <code>null</code> if none
	 * @throws InvalidRegistryObjectException if this configuration element is no longer valid
	 * @deprecated The method is equivalent to the {@link #getAttribute(String)}. Contrary to its description,
	 * this method returns a translated value. Use the {@link #getAttribute(String)} method instead.
	 */
	@Deprecated
	public String getAttributeAsIs(String name) throws InvalidRegistryObjectException;

	Returns the names of the attributes of this configuration element.
Returns an empty array if this configuration element has no attributes.

The names of configuration element attributes
are the same as the attribute names of the corresponding XML element.
For example, the configuration markup
<bg color="blue" pattern="stripes"/>


corresponds to a configuration element named "bg"
with attributes named "color"
and "pattern".

Throws: InvalidRegistryObjectException – if this configuration element is no longer valid
Returns: the names of the attributes/**
	 * Returns the names of the attributes of this configuration element.
	 * Returns an empty array if this configuration element has no attributes.
	 * <p>
	 * The names of configuration element attributes
	 * are the same as the attribute names of the corresponding XML element.
	 * For example, the configuration markup</p>
	 * <pre>
	 * &lt;bg color="blue" pattern="stripes"/&gt;
	 * </pre>
	 * <p>
	 * corresponds to a configuration element named <code>"bg"</code>
	 * with attributes named <code>"color"</code>
	 * and <code>"pattern"</code>.
	 * </p>
	 *
	 * @return the names of the attributes
	 * @throws InvalidRegistryObjectException if this configuration element is no longer valid
	 */
	public String[] getAttributeNames() throws InvalidRegistryObjectException;

	Returns all configuration elements that are children of this
configuration element.
Returns an empty array if this configuration element has no children.

Each child corresponds to a nested
XML element in the configuration markup.
For example, the configuration markup
<view>
	<verticalHint>top</verticalHint>
	<horizontalHint>left</horizontalHint>
</view>


corresponds to a configuration element, named "view",
with two children.

Throws: InvalidRegistryObjectException – if this configuration element is no longer valid
See Also: getChildren(String)
Returns: the child configuration elements/**
	 * Returns all configuration elements that are children of this
	 * configuration element.
	 * Returns an empty array if this configuration element has no children.
	 * <p>
	 * Each child corresponds to a nested
	 * XML element in the configuration markup.
	 * For example, the configuration markup</p>
	 * <pre>
	 * &lt;view&gt;
	 * 	&lt;verticalHint&gt;top&lt;/verticalHint&gt;
	 * 	&lt;horizontalHint&gt;left&lt;/horizontalHint&gt;
	 * &lt;/view&gt;
	 * </pre>
	 * <p>
	 * corresponds to a configuration element, named <code>"view"</code>,
	 * with two children.
	 * </p>
	 *
	 * @return the child configuration elements
	 * @throws InvalidRegistryObjectException if this configuration element is no longer valid
	 * @see #getChildren(String)
	 */
	public IConfigurationElement[] getChildren() throws InvalidRegistryObjectException;

	Returns all child configuration elements with the given name.
Returns an empty array if this configuration element has no children
with the given name.
Params: name – the name of the child configuration element
Throws: InvalidRegistryObjectException – if this configuration element is no longer valid
See Also: getChildren()
Returns: the child configuration elements with that name/**
	 * Returns all child configuration elements with the given name.
	 * Returns an empty array if this configuration element has no children
	 * with the given name.
	 *
	 * @param name the name of the child configuration element
	 * @return the child configuration elements with that name
	 * @throws InvalidRegistryObjectException if this configuration element is no longer valid
	 * @see #getChildren()
	 */
	public IConfigurationElement[] getChildren(String name) throws InvalidRegistryObjectException;

	Returns the extension that declares this configuration element.
Throws: InvalidRegistryObjectException – if this configuration element is no longer valid
Returns: the extension/**
	 * Returns the extension that declares this configuration element.
	 *
	 * @return the extension
	 * @throws InvalidRegistryObjectException if this configuration element is no longer valid
	 */
	public IExtension getDeclaringExtension() throws InvalidRegistryObjectException;

	Returns the name of this configuration element.
The name of a configuration element is the same as
the XML tag of the corresponding XML element.
For example, the configuration markup
<wizard name="Create Project"/>

corresponds to a configuration element named "wizard".
Throws: InvalidRegistryObjectException – if this configuration element is no longer valid
Returns: the name of this configuration element/**
	 * Returns the name of this configuration element.
	 * The name of a configuration element is the same as
	 * the XML tag of the corresponding XML element.
	 * For example, the configuration markup
	 * <pre>
	 * &lt;wizard name="Create Project"/&gt;
	 * </pre>
	 * corresponds to a configuration element named <code>"wizard"</code>.
	 *
	 * @return the name of this configuration element
	 * @throws InvalidRegistryObjectException if this configuration element is no longer valid
	 */
	public String getName() throws InvalidRegistryObjectException;

	Returns the element which contains this element.  If this element
is an immediate child of an extension, the
returned value can be downcast to IExtension.
Otherwise the returned value can be downcast to
IConfigurationElement.
Throws: InvalidRegistryObjectException – if this configuration element is no longer valid
Returns: the parent of this configuration element
 or null
Since: 3.0/**
	 * Returns the element which contains this element.  If this element
	 * is an immediate child of an extension, the
	 * returned value can be downcast to <code>IExtension</code>.
	 * Otherwise the returned value can be downcast to
	 * <code>IConfigurationElement</code>.
	 *
	 * @return the parent of this configuration element
	 *  or <code>null</code>
	 * @throws InvalidRegistryObjectException if this configuration element is no longer valid
	 * @since 3.0
	 */
	public Object getParent() throws InvalidRegistryObjectException;

	Returns the text value of this configuration element.
For example, the configuration markup
<script lang="javascript">.\scripts\cp.js</script>

corresponds to a configuration element "script"
with value ".\scripts\cp.js".
 Values may span multiple lines (i.e., contain carriage returns
and/or line feeds).
 Note that any translation specified in the plug-in manifest
file is automatically applied.

Throws: InvalidRegistryObjectException – if this configuration element is no longer valid
Returns: the text value of this configuration element or null/**
	 * Returns the text value of this configuration element.
	 * For example, the configuration markup
	 * <pre>
	 * &lt;script lang="javascript"&gt;.\scripts\cp.js&lt;/script&gt;
	 * </pre>
	 * corresponds to a configuration element <code>"script"</code>
	 * with value <code>".\scripts\cp.js"</code>.
	 * <p> Values may span multiple lines (i.e., contain carriage returns
	 * and/or line feeds).
	 * <p> Note that any translation specified in the plug-in manifest
	 * file is automatically applied.
	 * </p>
	 *
	 * @return the text value of this configuration element or <code>null</code>
	 * @throws InvalidRegistryObjectException if this configuration element is no longer valid
	 */
	public String getValue() throws InvalidRegistryObjectException;

	When multi-language support is enabled, this method returns the text value of this
configuration element in the specified locale, or null if none.

The locale matching tries to find the best match between available translations and
the requested locale, falling back to a more generic locale ("en") when the specific
locale ("en_US") is not available.
 If multi-language support is not enabled, this method is equivalent to the method getValue(). 
Params: locale – the requested locale
Throws: InvalidRegistryObjectException – if this configuration element is no longer valid
See Also: getValue(String)
IExtensionRegistry.isMultiLanguage()
Returns: the text value of this configuration element in the specified locale,
or null
Since: org.eclipse.equinox.registry 3.5/**
	 * When multi-language support is enabled, this method returns the text value of this
	 * configuration element in the specified locale, or <code>null</code> if none.
	 * <p>
	 * The locale matching tries to find the best match between available translations and
	 * the requested locale, falling back to a more generic locale ("en") when the specific
	 * locale ("en_US") is not available.
	 * </p><p>
	 * If multi-language support is not enabled, this method is equivalent to the method
	 * {@link #getValue()}.
	 * </p>
	 * @param locale the requested locale
	 * @return the text value of this configuration element in the specified locale,
	 * or <code>null</code>
	 * @throws InvalidRegistryObjectException if this configuration element is no longer valid
	 * @see #getValue(String)
	 * @see IExtensionRegistry#isMultiLanguage()
	 * @since org.eclipse.equinox.registry 3.5
	 */
	public String getValue(String locale) throws InvalidRegistryObjectException;

	Returns the untranslated text value of this configuration element.
For example, the configuration markup
<script lang="javascript">.\scripts\cp.js</script>

corresponds to a configuration element "script"
with value ".\scripts\cp.js".
 Values may span multiple lines (i.e., contain carriage returns
and/or line feeds).

Note that translation specified in the plug-in manifest
file is not automatically applied.
For example, the configuration markup
<tooltip>#hattip</tooltip>


corresponds to a configuration element, named "tooltip",
with value "#hattip".

Throws: InvalidRegistryObjectException – if this configuration element is no longer valid
Returns: the untranslated text value of this configuration element or null
Deprecated: The method is equivalent to the getValue(). Contrary to its description, this method returns a translated value. Use the getValue() method instead./**
	 * Returns the untranslated text value of this configuration element.
	 * For example, the configuration markup
	 * <pre>
	 * &lt;script lang="javascript"&gt;.\scripts\cp.js&lt;/script&gt;
	 * </pre>
	 * corresponds to a configuration element <code>"script"</code>
	 * with value <code>".\scripts\cp.js"</code>.
	 * <p> Values may span multiple lines (i.e., contain carriage returns
	 * and/or line feeds).
	 * <p>
	 * Note that translation specified in the plug-in manifest
	 * file is <b>not</b> automatically applied.
	 * For example, the configuration markup</p>
	 * <pre>
	 * &lt;tooltip&gt;#hattip&lt;/tooltip&gt;
	 * </pre>
	 * <p>
	 * corresponds to a configuration element, named <code>"tooltip"</code>,
	 * with value <code>"#hattip"</code>.
	 * </p>
	 *
	 * @return the untranslated text value of this configuration element or <code>null</code>
	 * @throws InvalidRegistryObjectException if this configuration element is no longer valid
	 * @deprecated The method is equivalent to the {@link #getValue()}. Contrary to its description,
	 * this method returns a translated value. Use the {@link #getValue()} method instead.
	 */
	@Deprecated
	public String getValueAsIs() throws InvalidRegistryObjectException;

	Returns the namespace for this configuration element. This value can be used
in various global facilities to discover this configuration element's contributor.
Throws: InvalidRegistryObjectException – if this configuration element is no longer valid
See Also: IExtensionRegistry
Returns: the namespace for this configuration element
Since: 3.1
Deprecated: As namespace is no longer restricted to the contributor name, use getNamespaceIdentifier() to obtain namespace name or getContributor() to get the name of the contributor of this registry element. 
In the past namespace was dictated by the name of the bundle. If bundle org.abc
contributed registry element with Id of MyId, the namespace of
the element was always set to org.abc, producing the qualified name of
org.abc.MyId.
 The namespace used to be the same as the bundle name. As a result, the getNamespace() method was used both to obtain the name of the bundle and to obtain the namespace of a registry element. 

Since 3.2, the extension registry allows elements to specify qualified name. The extension point
of the plug-in org.abc could specify org.zzz.MyExtPoint as
an Id. In this case, namespace name is org.zzz, but the contributor
name is org.abc.

(The use of a simple Id is still a preferred way. Whenever possible, specify only the simple
Id and let runtime take care of the rest.)
 If your code used the getNamespace() to obtain the name of the contributing bundle, use getContributor(). The typical usage pattern here is to find a bundle name to obtain some information from the corresponding OSGi bundle. For example, deducing the file location specified as a relative path to the bundle install location would fall into this group. 
 If your code used the getNamespace() to obtain the namespace of the registry element, use getNamespaceIdentifier(). Typically, this is the case when code is trying to process registry elements belonging to some logical group. For example, processing notifications for all elements belonging to the org.abc namespace would fall into this category.
/**
	 * Returns the namespace for this configuration element. This value can be used
	 * in various global facilities to discover this configuration element's contributor.
	 *
	 * @return the namespace for this configuration element
	 * @throws InvalidRegistryObjectException if this configuration element is no longer valid
	 * @see IExtensionRegistry
	 * @since 3.1
	 * @deprecated As namespace is no longer restricted to the contributor name,
	 * 	use {@link #getNamespaceIdentifier()} to obtain namespace name or {@link #getContributor()}
	 * 	to get the name of the contributor of this registry element.
	 * <p>
	 * In the past namespace was dictated by the name of the bundle. If bundle <code>org.abc</code>
	 * contributed registry element with Id of <code>MyId</code>, the namespace of
	 * the element was always set to <code>org.abc</code>, producing the qualified name of
	 * <code>org.abc.MyId</code>.
	 * </p><p>
	 * The namespace used to be the same as the bundle name. As a result, the {@link #getNamespace()}
	 * method was used both to obtain the name of the bundle and to obtain the namespace of a registry
	 * element.
	 * </p><p>
	 * Since 3.2, the extension registry allows elements to specify qualified name. The extension point
	 * of the plug-in <code>org.abc</code> could specify <code>org.zzz.MyExtPoint</code> as
	 * an Id. In this case, namespace name is <code>org.zzz</code>, but the contributor
	 * name is <code>org.abc</code>.
	 * </p><p>
	 * (The use of a simple Id is still a preferred way. Whenever possible, specify only the simple
	 * Id and let runtime take care of the rest.)
	 * </p><p>
	 * If your code used the {@link #getNamespace()} to obtain the name of the contributing bundle,
	 * use {@link #getContributor()}. The typical usage pattern here is to find a bundle name to obtain
	 * some information from the corresponding OSGi bundle. For example, deducing the file location
	 * specified as a relative path to the bundle install location would fall into this group.
	 * </p><p>
	 * If your code used the {@link #getNamespace()} to obtain the namespace of the registry element,
	 * use {@link #getNamespaceIdentifier()}. Typically, this is the case when code is trying to process
	 * registry elements belonging to some logical group. For example, processing notifications for all
	 * elements belonging to the <code>org.abc</code> namespace would fall into this category.
	 * </p>
	 */
	@Deprecated
	public String getNamespace() throws InvalidRegistryObjectException;

	Returns the namespace name for this configuration element.
Throws: InvalidRegistryObjectException – if this configuration element is no longer valid
Returns: the namespace name for this configuration element
Since: org.eclipse.equinox.registry 3.2/**
	 * Returns the namespace name for this configuration element.
	 *
	 * @return the namespace name for this configuration element
	 * @throws InvalidRegistryObjectException if this configuration element is no longer valid
	 * @since org.eclipse.equinox.registry 3.2
	 */
	public String getNamespaceIdentifier() throws InvalidRegistryObjectException;

	Returns the contributor of this configuration element.
Throws: InvalidRegistryObjectException – if this configuration element is no longer valid
Returns: the contributor for this configuration element
Since: org.eclipse.equinox.registry 3.2/**
	 * Returns the contributor of this configuration element.
	 *
	 * @return the contributor for this configuration element
	 * @throws InvalidRegistryObjectException if this configuration element is no longer valid
	 * @since org.eclipse.equinox.registry 3.2
	 */
	public IContributor getContributor() throws InvalidRegistryObjectException;

	{@inheritDoc}
See Also: getHandleId()
Returns: true if the given element has same handle id/**
	 * {@inheritDoc}
	 * @return true if the given element has same handle id
	 * @see #getHandleId()
	 */
	@Override
	public boolean equals(Object o);

	Returns whether this configuration element object is valid.
Returns: true if the object is valid, and false
if it is no longer valid
Since: 3.1/**
	 * Returns whether this configuration element object is valid.
	 *
	 * @return <code>true</code> if the object is valid, and <code>false</code>
	 * if it is no longer valid
	 * @since 3.1
	 */
	public boolean isValid();

	Returns unique identifier of the registry object from which this element was created.
Two configuration element instances are considered to be equal if their handle id's are same.
See Also: equals(Object)
Returns: The handle id of the registry object from which this configuration element was created.
Since: 3.8/**
	 * Returns unique identifier of the registry object from which this element was created.
	 * Two configuration element instances are considered to be equal if their handle id's are same.
	 * @return The handle id of the registry object from which this configuration element was created.
	 * @see #equals(Object)
	 * @since 3.8
	 */
	public int getHandleId();
}
Params:	propertyName – the name of the property
Throws:	CoreException – if an instance of the executable extension could not be created for any reason InvalidRegistryObjectException – if this configuration element is no longer valid
See Also:	IExecutableExtension.setInitializationData(IConfigurationElement, String, Object) IExecutableExtensionFactory
Returns:	the executable instance
Params:	name – the name of the attribute
Throws:	InvalidRegistryObjectException – if this configuration element is no longer valid
Returns:	attribute value, or `null` if none
Params:	attrName – the name of the attribute locale – the requested locale
Throws:	InvalidRegistryObjectException – if this configuration element is no longer valid
See Also:	getAttribute(String) IExtensionRegistry.isMultiLanguage()
Returns:	attribute value, or `null` if none
Since:	org.eclipse.equinox.registry 3.5
Params:	name – the name of the child configuration element
Throws:	InvalidRegistryObjectException – if this configuration element is no longer valid
See Also:	getChildren()
Returns:	the child configuration elements with that name
Params:	locale – the requested locale
Throws:	InvalidRegistryObjectException – if this configuration element is no longer valid
See Also:	getValue(String) IExtensionRegistry.isMultiLanguage()
Returns:	the text value of this configuration element in the specified locale, or `null`
Since:	org.eclipse.equinox.registry 3.5
See Also:	getHandleId()
Returns:	true if the given element has same handle id
Returns:	`true` if the object is valid, and `false` if it is no longer valid
Since:	3.1
See Also:	equals(Object)
Returns:	The handle id of the registry object from which this configuration element was created.
Since:	3.8
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org.eclipse.platform/ org.eclipse.equinox.registry/ 3.8.600/ org/eclipse/core/runtime/IConfigurationElement.java
