bundles/org.eclipse.equinox.registry/src/org/eclipse/core/internal/registry/ConfigurationElement.java - equinox/rt.equinox.bundles - Git at Google

 /*******************************************************************************
  * Copyright (c) 2000, 2006 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  *     IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.core.internal.registry;

 import java.util.Hashtable;
 import org.eclipse.core.runtime.*;
 import org.eclipse.core.runtime.spi.RegistryContributor;
 import org.eclipse.osgi.util.NLS;

 /**
  * An object which represents the user-defined contents of an extension
  * in a plug-in manifest.
  */
 public class ConfigurationElement extends RegistryObject {
 	static final ConfigurationElement[] EMPTY_ARRAY = new ConfigurationElement[0];

 	//The id of the parent element. It can be a configuration element or an extension
 	int parentId;
 	byte parentType; //This value is only interesting when running from cache.

 	//Store the properties and the value of the configuration element.
 	//The format is the following:
 	//	[p1, v1, p2, v2, configurationElementValue]
 	//If the array size is even, there is no "configurationElementValue (ie getValue returns null)".
 	//The properties and their values are alternated (v1 is the value of p1).
 	private String[] propertiesAndValue;

 	//The name of the configuration element
 	private String name;

 	//ID of the actual contributor of this element
 	//This value can be null when the element is loaded from disk and the owner has been uninstalled.
 	//This happens when the configuration is obtained from a delta containing removed extension.
 	private String contributorId;

 	protected ConfigurationElement(ExtensionRegistry registry, boolean persist) {
 		super(registry, persist);
 	}

 	protected ConfigurationElement(int self, String contributorId, String name, String[] propertiesAndValue, int[] children, int extraDataOffset, int parent, byte parentType, ExtensionRegistry registry, boolean persist) {
 		super(registry, persist);

 		setObjectId(self);
 		this.contributorId = contributorId;
 		this.name = name;
 		this.propertiesAndValue = propertiesAndValue;
 		setRawChildren(children);
 		setExtraDataOffset(extraDataOffset);
 		parentId = parent;
 		this.parentType = parentType;
 	}

 	void throwException(String message, Throwable exception) throws CoreException {
 		throw new CoreException(new Status(IStatus.ERROR, RegistryMessages.OWNER_NAME, IRegistryConstants.PLUGIN_ERROR, message, exception));
 	}

 	protected String getValue() {
 		return getValueAsIs();
 	}

 	String getValueAsIs() {
 		if (propertiesAndValue.length != 0 && propertiesAndValue.length % 2 == 1)
 			return propertiesAndValue[propertiesAndValue.length - 1];
 		return null;
 	}

 	public String getAttribute(String attrName) {
 		return getAttributeAsIs(attrName);
 	}

 	String getAttributeAsIs(String attrName) {
 		if (propertiesAndValue.length <= 1)
 			return null;
 		int size = propertiesAndValue.length - (propertiesAndValue.length % 2);
 		for (int i = 0; i < size; i += 2) {
 			if (propertiesAndValue[i].equals(attrName))
 				return propertiesAndValue[i + 1];
 		}
 		return null;
 	}

 	protected String[] getAttributeNames() {
 		if (propertiesAndValue.length <= 1)
 			return RegistryObjectManager.EMPTY_STRING_ARRAY;

 		int size = propertiesAndValue.length / 2;
 		String[] result = new String[size];
 		for (int i = 0; i < size; i++) {
 			result[i] = propertiesAndValue[i * 2];
 		}
 		return result;
 	}

 	void setProperties(String[] value) {
 		propertiesAndValue = value;
 	}

 	protected String[] getPropertiesAndValue() {
 		return propertiesAndValue;
 	}

 	void setValue(String value) {
 		if (propertiesAndValue.length == 0) {
 			propertiesAndValue = new String[] {value};
 			return;
 		}
 		if (propertiesAndValue.length % 2 == 1) {
 			propertiesAndValue[propertiesAndValue.length - 1] = value;
 			return;
 		}
 		String[] newPropertiesAndValue = new String[propertiesAndValue.length + 1];
 		System.arraycopy(propertiesAndValue, 0, newPropertiesAndValue, 0, propertiesAndValue.length);
 		newPropertiesAndValue[propertiesAndValue.length] = value;
 		propertiesAndValue = newPropertiesAndValue;
 	}

 	void setContributorId(String id) {
 		this.contributorId = id;
 	}

 	protected String getContributorId() {
 		return contributorId;
 	}

 	public ConfigurationElement[] getChildren(String childrenName) {
 		if (getRawChildren().length == 0)
 			return ConfigurationElement.EMPTY_ARRAY;

 		ConfigurationElement[] result = new ConfigurationElement[1]; //Most of the time there is only one match
 		int idx = 0;
 		RegistryObjectManager objectManager = registry.getObjectManager();
 		for (int i = 0; i < children.length; i++) {
 			ConfigurationElement toTest = (ConfigurationElement) objectManager.getObject(children[i], noExtraData() ? RegistryObjectManager.CONFIGURATION_ELEMENT : RegistryObjectManager.THIRDLEVEL_CONFIGURATION_ELEMENT);
 			if (toTest.name.equals(childrenName)) {
 				if (idx != 0) {
 					ConfigurationElement[] copy = new ConfigurationElement[result.length + 1];
 					System.arraycopy(result, 0, copy, 0, result.length);
 					result = copy;
 				}
 				result[idx++] = toTest;
 			}
 		}
 		if (idx == 0)
 			result = ConfigurationElement.EMPTY_ARRAY;
 		return result;
 	}

 	void setParentId(int objectId) {
 		parentId = objectId;
 	}

 	protected String getName() {
 		return name;
 	}

 	void setName(String name) {
 		this.name = name;
 	}

 	void setParentType(byte type) {
 		parentType = type;
 	}

 	public IContributor getContributor() {
 		return registry.getObjectManager().getContributor(contributorId);
 	}

 	protected Object createExecutableExtension(String attributeName) throws CoreException {
 		String prop = null;
 		String executable;
 		String contributorName = null;
 		String className = null;
 		Object initData = null;
 		int i;

 		if (attributeName != null)
 			prop = getAttribute(attributeName);
 		else {
 			// property not specified, try as element value
 			prop = getValue();
 			if (prop != null) {
 				prop = prop.trim();
 				if (prop.equals("")) //$NON-NLS-1$
 					prop = null;
 			}
 		}

 		if (prop == null) {
 			// property not defined, try as a child element
 			ConfigurationElement[] exec;
 			ConfigurationElement[] parms;
 			ConfigurationElement element;
 			Hashtable initParms;
 			String pname;

 			exec = getChildren(attributeName);
 			if (exec.length != 0) {
 				element = exec[0]; // assumes single definition
 				contributorName = element.getAttribute("plugin"); //$NON-NLS-1$
 				className = element.getAttribute("class"); //$NON-NLS-1$
 				parms = element.getChildren("parameter"); //$NON-NLS-1$
 				if (parms.length != 0) {
 					initParms = new Hashtable(parms.length + 1);
 					for (i = 0; i < parms.length; i++) {
 						pname = parms[i].getAttribute("name"); //$NON-NLS-1$
 						if (pname != null)
 							initParms.put(pname, parms[i].getAttribute("value")); //$NON-NLS-1$
 					}
 					if (!initParms.isEmpty())
 						initData = initParms;
 				}
 			} else {
 				// specified name is not a simple attribute nor child element
 				throwException(NLS.bind(RegistryMessages.exExt_extDefNotFound, attributeName), null);
 			}
 		} else {
 			// simple property or element value, parse it into its components
 			i = prop.indexOf(':');
 			if (i != -1) {
 				executable = prop.substring(0, i).trim();
 				initData = prop.substring(i + 1).trim();
 			} else
 				executable = prop;

 			i = executable.indexOf('/');
 			if (i != -1) {
 				contributorName = executable.substring(0, i).trim();
 				className = executable.substring(i + 1).trim();
 			} else
 				className = executable;
 		}

 		// create a new instance
 		RegistryContributor defaultContributor = registry.getObjectManager().getContributor(contributorId);
 		Object result = registry.createExecutableExtension(defaultContributor, className, contributorName);

 		// Check if we have extension adapter and initialize;
 		// Make the call even if the initialization string is null
 		try {
 			// We need to take into account both "old" and "new" style executable extensions
 			ConfigurationElementHandle confElementHandle = new ConfigurationElementHandle(registry.getObjectManager(), getObjectId());
 			if (result instanceof IExecutableExtension)
 				((IExecutableExtension) result).setInitializationData(confElementHandle, attributeName, initData);
 		} catch (CoreException ce) {
 			// user code threw exception
 			throw ce;
 		} catch (Exception te) {
 			// user code caused exception
 			throwException(NLS.bind(RegistryMessages.plugin_initObjectError, getContributor().getName(), className), te);
 		}

 		// Deal with executable extension factories.
 		if (result instanceof IExecutableExtensionFactory)
 			result = ((IExecutableExtensionFactory) result).create();

 		return result;
 	}

 }
	/*******************************************************************************
	* Copyright (c) 2000, 2006 IBM Corporation and others.
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License v1.0
	* which accompanies this distribution, and is available at
	* http://www.eclipse.org/legal/epl-v10.html
	*
	* Contributors:
	* IBM Corporation - initial API and implementation
	*******************************************************************************/
	package org.eclipse.core.internal.registry;

	import java.util.Hashtable;
	import org.eclipse.core.runtime.*;
	import org.eclipse.core.runtime.spi.RegistryContributor;
	import org.eclipse.osgi.util.NLS;

	/**
	* An object which represents the user-defined contents of an extension
	* in a plug-in manifest.
	*/
	public class ConfigurationElement extends RegistryObject {
	static final ConfigurationElement[] EMPTY_ARRAY = new ConfigurationElement[0];

	//The id of the parent element. It can be a configuration element or an extension
	int parentId;
	byte parentType; //This value is only interesting when running from cache.

	//Store the properties and the value of the configuration element.
	//The format is the following:
	// [p1, v1, p2, v2, configurationElementValue]
	//If the array size is even, there is no "configurationElementValue (ie getValue returns null)".
	//The properties and their values are alternated (v1 is the value of p1).
	private String[] propertiesAndValue;

	//The name of the configuration element
	private String name;

	//ID of the actual contributor of this element
	//This value can be null when the element is loaded from disk and the owner has been uninstalled.
	//This happens when the configuration is obtained from a delta containing removed extension.
	private String contributorId;

	protected ConfigurationElement(ExtensionRegistry registry, boolean persist) {
	super(registry, persist);
	}

	protected ConfigurationElement(int self, String contributorId, String name, String[] propertiesAndValue, int[] children, int extraDataOffset, int parent, byte parentType, ExtensionRegistry registry, boolean persist) {
	super(registry, persist);

	setObjectId(self);
	this.contributorId = contributorId;
	this.name = name;
	this.propertiesAndValue = propertiesAndValue;
	setRawChildren(children);
	setExtraDataOffset(extraDataOffset);
	parentId = parent;
	this.parentType = parentType;
	}

	void throwException(String message, Throwable exception) throws CoreException {
	throw new CoreException(new Status(IStatus.ERROR, RegistryMessages.OWNER_NAME, IRegistryConstants.PLUGIN_ERROR, message, exception));
	}

	protected String getValue() {
	return getValueAsIs();
	}

	String getValueAsIs() {
	if (propertiesAndValue.length != 0 && propertiesAndValue.length % 2 == 1)
	return propertiesAndValue[propertiesAndValue.length - 1];
	return null;
	}

	public String getAttribute(String attrName) {
	return getAttributeAsIs(attrName);
	}

	String getAttributeAsIs(String attrName) {
	if (propertiesAndValue.length <= 1)
	return null;
	int size = propertiesAndValue.length - (propertiesAndValue.length % 2);
	for (int i = 0; i < size; i += 2) {
	if (propertiesAndValue[i].equals(attrName))
	return propertiesAndValue[i + 1];
	}
	return null;
	}

	protected String[] getAttributeNames() {
	if (propertiesAndValue.length <= 1)
	return RegistryObjectManager.EMPTY_STRING_ARRAY;

	int size = propertiesAndValue.length / 2;
	String[] result = new String[size];
	for (int i = 0; i < size; i++) {
	result[i] = propertiesAndValue[i * 2];
	}
	return result;
	}

	void setProperties(String[] value) {
	propertiesAndValue = value;
	}

	protected String[] getPropertiesAndValue() {
	return propertiesAndValue;
	}

	void setValue(String value) {
	if (propertiesAndValue.length == 0) {
	propertiesAndValue = new String[] {value};
	return;
	}
	if (propertiesAndValue.length % 2 == 1) {
	propertiesAndValue[propertiesAndValue.length - 1] = value;
	return;
	}
	String[] newPropertiesAndValue = new String[propertiesAndValue.length + 1];
	System.arraycopy(propertiesAndValue, 0, newPropertiesAndValue, 0, propertiesAndValue.length);
	newPropertiesAndValue[propertiesAndValue.length] = value;
	propertiesAndValue = newPropertiesAndValue;
	}

	void setContributorId(String id) {
	this.contributorId = id;
	}

	protected String getContributorId() {
	return contributorId;
	}

	public ConfigurationElement[] getChildren(String childrenName) {
	if (getRawChildren().length == 0)
	return ConfigurationElement.EMPTY_ARRAY;

	ConfigurationElement[] result = new ConfigurationElement[1]; //Most of the time there is only one match
	int idx = 0;
	RegistryObjectManager objectManager = registry.getObjectManager();
	for (int i = 0; i < children.length; i++) {
	ConfigurationElement toTest = (ConfigurationElement) objectManager.getObject(children[i], noExtraData() ? RegistryObjectManager.CONFIGURATION_ELEMENT : RegistryObjectManager.THIRDLEVEL_CONFIGURATION_ELEMENT);
	if (toTest.name.equals(childrenName)) {
	if (idx != 0) {
	ConfigurationElement[] copy = new ConfigurationElement[result.length + 1];
	System.arraycopy(result, 0, copy, 0, result.length);
	result = copy;
	}
	result[idx++] = toTest;
	}
	}
	if (idx == 0)
	result = ConfigurationElement.EMPTY_ARRAY;
	return result;
	}

	void setParentId(int objectId) {
	parentId = objectId;
	}

	protected String getName() {
	return name;
	}

	void setName(String name) {
	this.name = name;
	}

	void setParentType(byte type) {
	parentType = type;
	}

	public IContributor getContributor() {
	return registry.getObjectManager().getContributor(contributorId);
	}

	protected Object createExecutableExtension(String attributeName) throws CoreException {
	String prop = null;
	String executable;
	String contributorName = null;
	String className = null;
	Object initData = null;
	int i;

	if (attributeName != null)
	prop = getAttribute(attributeName);
	else {
	// property not specified, try as element value
	prop = getValue();
	if (prop != null) {
	prop = prop.trim();
	if (prop.equals("")) //$NON-NLS-1$
	prop = null;
	}
	}

	if (prop == null) {
	// property not defined, try as a child element
	ConfigurationElement[] exec;
	ConfigurationElement[] parms;
	ConfigurationElement element;
	Hashtable initParms;
	String pname;

	exec = getChildren(attributeName);
	if (exec.length != 0) {
	element = exec[0]; // assumes single definition
	contributorName = element.getAttribute("plugin"); //$NON-NLS-1$
	className = element.getAttribute("class"); //$NON-NLS-1$
	parms = element.getChildren("parameter"); //$NON-NLS-1$
	if (parms.length != 0) {
	initParms = new Hashtable(parms.length + 1);
	for (i = 0; i < parms.length; i++) {
	pname = parms[i].getAttribute("name"); //$NON-NLS-1$
	if (pname != null)
	initParms.put(pname, parms[i].getAttribute("value")); //$NON-NLS-1$
	}
	if (!initParms.isEmpty())
	initData = initParms;
	}
	} else {
	// specified name is not a simple attribute nor child element
	throwException(NLS.bind(RegistryMessages.exExt_extDefNotFound, attributeName), null);
	}
	} else {
	// simple property or element value, parse it into its components
	i = prop.indexOf(':');
	if (i != -1) {
	executable = prop.substring(0, i).trim();
	initData = prop.substring(i + 1).trim();
	} else
	executable = prop;

	i = executable.indexOf('/');
	if (i != -1) {
	contributorName = executable.substring(0, i).trim();
	className = executable.substring(i + 1).trim();
	} else
	className = executable;
	}

	// create a new instance
	RegistryContributor defaultContributor = registry.getObjectManager().getContributor(contributorId);
	Object result = registry.createExecutableExtension(defaultContributor, className, contributorName);

	// Check if we have extension adapter and initialize;
	// Make the call even if the initialization string is null
	try {
	// We need to take into account both "old" and "new" style executable extensions
	ConfigurationElementHandle confElementHandle = new ConfigurationElementHandle(registry.getObjectManager(), getObjectId());
	if (result instanceof IExecutableExtension)
	((IExecutableExtension) result).setInitializationData(confElementHandle, attributeName, initData);
	} catch (CoreException ce) {
	// user code threw exception
	throw ce;
	} catch (Exception te) {
	// user code caused exception
	throwException(NLS.bind(RegistryMessages.plugin_initObjectError, getContributor().getName(), className), te);
	}

	// Deal with executable extension factories.
	if (result instanceof IExecutableExtensionFactory)
	result = ((IExecutableExtensionFactory) result).create();

	return result;
	}

	}