framework/bundles/org.eclipse.ecf/src/org/eclipse/ecf/core/ContainerTypeDescription.java - ecf/org.eclipse.ecf - Git at Google

 /****************************************************************************
  * Copyright (c) 2004 Composent, Inc. and others.
  *
  * This program and the accompanying materials are made
  * available under the terms of the Eclipse Public License 2.0
  * which is available at https://www.eclipse.org/legal/epl-2.0/
  *
  * Contributors: Composent, Inc. - initial API and implementation
  *
  * SPDX-License-Identifier: EPL-2.0
  *****************************************************************************/
 package org.eclipse.ecf.core;

 import java.lang.reflect.InvocationTargetException;
 import java.util.*;
 import org.eclipse.core.runtime.*;
 import org.eclipse.ecf.core.provider.IContainerInstantiator;
 import org.eclipse.ecf.core.provider.IRemoteServiceContainerInstantiator;
 import org.eclipse.ecf.core.util.Trace;
 import org.eclipse.ecf.internal.core.ECFDebugOptions;
 import org.eclipse.ecf.internal.core.ECFPlugin;

 /**
  * Description of an {@link IContainer} type.  Instances of this class are used to represent {@link IContainerInstantiator}s
  * in the {@link ContainerFactory}
  *
  * @see ContainerFactory IContainerInstantiator
  */
 public class ContainerTypeDescription {

 	protected String name = null;

 	protected String instantiatorClass = null;

 	protected IContainerInstantiator instantiator = null;

 	protected String description = null;

 	protected int hashCode = 0;

 	protected boolean server;

 	protected boolean hidden;

 	public ContainerTypeDescription(String name, String instantiatorClass, String description) {
 		this(name, instantiatorClass, description, false, false);
 	}

 	public ContainerTypeDescription(String name, String instantiatorClass, String description, boolean server, boolean hidden) {
 		Assert.isNotNull(name, "ContainerTypeDescription<init> name cannot be null"); //$NON-NLS-1$
 		this.name = name;
 		this.hashCode = name.hashCode();
 		Assert.isNotNull(instantiatorClass, "ContainerTypeDescription<init> instantiatorClass cannot be null"); //$NON-NLS-1$
 		this.instantiatorClass = instantiatorClass;
 		this.description = description;
 		this.server = server;
 		this.hidden = hidden;
 	}

 	/**
 	 * @param name name
 	 * @param instantiator instantiator
 	 * @since 3.4
 	 */
 	public ContainerTypeDescription(String name, IContainerInstantiator instantiator) {
 		this(name, instantiator, null);
 	}

 	public ContainerTypeDescription(String name, IContainerInstantiator instantiator, String description) {
 		this(name, instantiator, description, false, false);
 	}

 	public ContainerTypeDescription(String name, IContainerInstantiator inst, String desc, boolean server, boolean hidden) {
 		Assert.isNotNull(name, "ContainerTypeDescription<init> name cannot be null"); //$NON-NLS-1$
 		this.name = name;
 		this.hashCode = name.hashCode();
 		Assert.isNotNull(inst, "ContainerTypeDescription<init> instantiator instance cannot be null"); //$NON-NLS-1$
 		this.instantiator = inst;
 		this.description = desc;
 		this.server = server;
 		this.hidden = hidden;
 	}

 	/**
 	 * Get ContainerTypeDescription name
 	 *
 	 * @return String name for the ContainerTypeDescription. Will not be null.
 	 */
 	public String getName() {
 		return name;
 	}

 	public boolean equals(Object other) {
 		if (!(other instanceof ContainerTypeDescription))
 			return false;
 		ContainerTypeDescription scd = (ContainerTypeDescription) other;
 		return scd.name.equals(name);
 	}

 	public int hashCode() {
 		return hashCode;
 	}

 	public String toString() {
 		StringBuffer b = new StringBuffer("ContainerTypeDescription["); //$NON-NLS-1$
 		b.append("name=").append(name).append(";"); //$NON-NLS-1$ //$NON-NLS-2$
 		if (instantiator == null)
 			b.append("instantiatorClass=").append(instantiatorClass) //$NON-NLS-1$
 					.append(";"); //$NON-NLS-1$
 		else
 			b.append("instantiator=").append(instantiator).append(";"); //$NON-NLS-1$ //$NON-NLS-2$
 		b.append("desc=").append(description).append(";"); //$NON-NLS-1$ //$NON-NLS-2$
 		return b.toString();
 	}

 	protected IContainerInstantiator getInstantiator() throws ClassNotFoundException, InstantiationException, IllegalAccessException {
 		synchronized (this) {
 			if (instantiator == null)
 				initializeInstantiator();
 			return instantiator;
 		}
 	}

 	private void initializeInstantiator() throws ClassNotFoundException, InstantiationException, IllegalAccessException {
 		// Load instantiator class
 		Class clazz = Class.forName(instantiatorClass);
 		// Make new instance
 		try {
 			instantiator = (IContainerInstantiator) clazz.getDeclaredConstructor().newInstance();
 		} catch (InvocationTargetException e) {
 			throw new ClassNotFoundException("Invocation target exception accessing null constructor for class=" + clazz, e); //$NON-NLS-1$
 		} catch (NoSuchMethodException e) {
 			throw new ClassNotFoundException("No null constructor found on class=" + clazz, e); //$NON-NLS-1$
 		} catch (SecurityException e) {
 			throw new ClassNotFoundException("Security exception accessing null constructor for class=" + clazz, e); //$NON-NLS-1$
 		}
 	}

 	/**
 	 * Get the String description associated with this ContainerTypeDescription
 	 * instance
 	 *
 	 * @return String description. May be null.
 	 */
 	public String getDescription() {
 		return description;
 	}

 	public boolean isServer() {
 		return server;
 	}

 	public boolean isHidden() {
 		return hidden;
 	}

 	/**
 	 * Get array of supported adapters for this container type description. The
 	 * returned array entries will be the fully qualified names of the adapter
 	 * classes.
 	 *
 	 * Note that the returned types do not guarantee that a subsequent call to
 	 * {@link IContainer#getAdapter(Class)} with the same type name as a
 	 * returned value will return a non-<code>null</code> result. In other words, even if the
 	 * class name is in the returned array, subsequent calls to
 	 * {@link IContainer#getAdapter(Class)} may still return <code>null</code>.
 	 *
 	 * @return String[] of supported adapters. The entries in the returned array
 	 *         will be the fully qualified class names of adapters supported by
 	 *         the given description. An empty string array (String[0]) will be
 	 *         returned if no adapters are supported.
 	 */
 	public String[] getSupportedAdapterTypes() {
 		String[] result = new String[0];
 		try {
 			String[] r = getInstantiator().getSupportedAdapterTypes(this);
 			if (r != null)
 				result = r;
 		} catch (Exception e) {
 			traceAndLogException(IStatus.ERROR, "getSupportedAdapterTypes", e); //$NON-NLS-1$
 		}
 		List resultList = new ArrayList();
 		resultList.addAll(Arrays.asList(result));
 		if (!resultList.contains(IContainer.class.getName()))
 			resultList.add(IContainer.class.getName());
 		return (String[]) resultList.toArray(new String[] {});
 	}

 	protected void traceAndLogException(int code, String method, Throwable e) {
 		Trace.catching(ECFPlugin.PLUGIN_ID, ECFDebugOptions.EXCEPTIONS_CATCHING, this.getClass(), method, e);
 		ECFPlugin.getDefault().log(new Status(IStatus.ERROR, ECFPlugin.PLUGIN_ID, code, method, e));
 	}

 	/**
 	 * Get array of parameter types for this ContainerTypeDescription. Each of
 	 * the rows of the returned array specifies a Class[] of parameter types.
 	 * These parameter types correspond to the types of Objects that can be
 	 * passed into the second parameter of
 	 * {@link IContainerInstantiator#createInstance(ContainerTypeDescription, Object[])}.
 	 * For example, if this method returns a Class [] = {{ String.class,
 	 * String.class }, { String.class }} this indicates that a call to
 	 * createInstance(description,new String[] { "hello", "there" }) and a call
 	 * to createInstance(description,new String[] { "hello" }) will be
 	 * understood by the underlying provider implementation.
 	 *
 	 * @return Class[][] array of Class arrays. Each row corresponds to a
 	 *         Class[] that describes the types of Objects for second parameter
 	 *         to
 	 *         {@link IContainerInstantiator#createInstance(ContainerTypeDescription, Object[])}.
 	 *         If no parameter types are understood as arguments, a Class[0][0]
 	 *         array will be returned
 	 */
 	public Class[][] getSupportedParameterTypes() {
 		Class[][] result = {{}};
 		try {
 			Class[][] r = getInstantiator().getSupportedParameterTypes(this);
 			if (r != null)
 				result = r;
 		} catch (Exception e) {
 			traceAndLogException(IStatus.ERROR, "getSupportedParameterTypes", e); //$NON-NLS-1$
 		}
 		return result;
 	}

 	/**
 	 * @return String[] of container's intents.
 	 *
 	 * @since 3.0
 	 */
 	public String[] getSupportedIntents() {
 		try {
 			IContainerInstantiator ci = getInstantiator();
 			return (ci instanceof IRemoteServiceContainerInstantiator) ? ((IRemoteServiceContainerInstantiator) ci).getSupportedIntents(this) : null;
 		} catch (Exception e) {
 			traceAndLogException(IStatus.ERROR, "getSupportedIntents", e); //$NON-NLS-1$
 			return null;
 		}
 	}

 	/**
 	 * @return String[] supported configs
 	 * @since 3.1
 	 */
 	public String[] getSupportedConfigs() {
 		try {
 			IContainerInstantiator ci = getInstantiator();
 			return (ci instanceof IRemoteServiceContainerInstantiator) ? ((IRemoteServiceContainerInstantiator) ci).getSupportedConfigs(this) : null;
 		} catch (Exception e) {
 			traceAndLogException(IStatus.ERROR, "getSupportedConfigs", e); //$NON-NLS-1$
 			return null;
 		}
 	}

 	/**
 	 * @param exporterSupportedConfigs exporter supported configs
 	 * @return String[] imported configs
 	 * @since 3.1
 	 */
 	public String[] getImportedConfigs(String[] exporterSupportedConfigs) {
 		if (exporterSupportedConfigs == null)
 			return null;
 		try {
 			IContainerInstantiator ci = getInstantiator();
 			return (ci instanceof IRemoteServiceContainerInstantiator) ? ((IRemoteServiceContainerInstantiator) ci).getImportedConfigs(this, exporterSupportedConfigs) : null;
 		} catch (Exception e) {
 			traceAndLogException(IStatus.ERROR, "getImportedConfigs", e); //$NON-NLS-1$
 			return null;
 		}
 	}

 	/**
 	 * @param importedConfigs imported configs
 	 * @param exportedProperties exported properties
 	 * @return Dictionary dictionary of properties for imported configs
 	 * @since 3.1
 	 */
 	public Dictionary getPropertiesForImportedConfigs(String[] importedConfigs, Dictionary exportedProperties) {
 		if (importedConfigs == null)
 			return null;
 		try {
 			IContainerInstantiator ci = getInstantiator();
 			return (ci instanceof IRemoteServiceContainerInstantiator) ? ((IRemoteServiceContainerInstantiator) ci).getPropertiesForImportedConfigs(this, importedConfigs, exportedProperties) : null;
 		} catch (Exception e) {
 			traceAndLogException(IStatus.ERROR, "getPropertiesForImportedConfigs", e); //$NON-NLS-1$
 			return null;
 		}
 	}

 }
	/****************************************************************************
	* Copyright (c) 2004 Composent, Inc. and others.
	*
	* This program and the accompanying materials are made
	* available under the terms of the Eclipse Public License 2.0
	* which is available at https://www.eclipse.org/legal/epl-2.0/
	*
	* Contributors: Composent, Inc. - initial API and implementation
	*
	* SPDX-License-Identifier: EPL-2.0
	*****************************************************************************/
	package org.eclipse.ecf.core;

	import java.lang.reflect.InvocationTargetException;
	import java.util.*;
	import org.eclipse.core.runtime.*;
	import org.eclipse.ecf.core.provider.IContainerInstantiator;
	import org.eclipse.ecf.core.provider.IRemoteServiceContainerInstantiator;
	import org.eclipse.ecf.core.util.Trace;
	import org.eclipse.ecf.internal.core.ECFDebugOptions;
	import org.eclipse.ecf.internal.core.ECFPlugin;

	/**
	* Description of an {@link IContainer} type. Instances of this class are used to represent {@link IContainerInstantiator}s
	* in the {@link ContainerFactory}
	*
	* @see ContainerFactory IContainerInstantiator
	*/
	public class ContainerTypeDescription {

	protected String name = null;

	protected String instantiatorClass = null;

	protected IContainerInstantiator instantiator = null;

	protected String description = null;

	protected int hashCode = 0;

	protected boolean server;

	protected boolean hidden;

	public ContainerTypeDescription(String name, String instantiatorClass, String description) {
	this(name, instantiatorClass, description, false, false);
	}

	public ContainerTypeDescription(String name, String instantiatorClass, String description, boolean server, boolean hidden) {
	Assert.isNotNull(name, "ContainerTypeDescription<init> name cannot be null"); //$NON-NLS-1$
	this.name = name;
	this.hashCode = name.hashCode();
	Assert.isNotNull(instantiatorClass, "ContainerTypeDescription<init> instantiatorClass cannot be null"); //$NON-NLS-1$
	this.instantiatorClass = instantiatorClass;
	this.description = description;
	this.server = server;
	this.hidden = hidden;
	}

	/**
	* @param name name
	* @param instantiator instantiator
	* @since 3.4
	*/
	public ContainerTypeDescription(String name, IContainerInstantiator instantiator) {
	this(name, instantiator, null);
	}

	public ContainerTypeDescription(String name, IContainerInstantiator instantiator, String description) {
	this(name, instantiator, description, false, false);
	}

	public ContainerTypeDescription(String name, IContainerInstantiator inst, String desc, boolean server, boolean hidden) {
	Assert.isNotNull(name, "ContainerTypeDescription<init> name cannot be null"); //$NON-NLS-1$
	this.name = name;
	this.hashCode = name.hashCode();
	Assert.isNotNull(inst, "ContainerTypeDescription<init> instantiator instance cannot be null"); //$NON-NLS-1$
	this.instantiator = inst;
	this.description = desc;
	this.server = server;
	this.hidden = hidden;
	}

	/**
	* Get ContainerTypeDescription name
	*
	* @return String name for the ContainerTypeDescription. Will not be null.
	*/
	public String getName() {
	return name;
	}

	public boolean equals(Object other) {
	if (!(other instanceof ContainerTypeDescription))
	return false;
	ContainerTypeDescription scd = (ContainerTypeDescription) other;
	return scd.name.equals(name);
	}

	public int hashCode() {
	return hashCode;
	}

	public String toString() {
	StringBuffer b = new StringBuffer("ContainerTypeDescription["); //$NON-NLS-1$
	b.append("name=").append(name).append(";"); //$NON-NLS-1$ //$NON-NLS-2$
	if (instantiator == null)
	b.append("instantiatorClass=").append(instantiatorClass) //$NON-NLS-1$
	.append(";"); //$NON-NLS-1$
	else
	b.append("instantiator=").append(instantiator).append(";"); //$NON-NLS-1$ //$NON-NLS-2$
	b.append("desc=").append(description).append(";"); //$NON-NLS-1$ //$NON-NLS-2$
	return b.toString();
	}

	protected IContainerInstantiator getInstantiator() throws ClassNotFoundException, InstantiationException, IllegalAccessException {
	synchronized (this) {
	if (instantiator == null)
	initializeInstantiator();
	return instantiator;
	}
	}

	private void initializeInstantiator() throws ClassNotFoundException, InstantiationException, IllegalAccessException {
	// Load instantiator class
	Class clazz = Class.forName(instantiatorClass);
	// Make new instance
	try {
	instantiator = (IContainerInstantiator) clazz.getDeclaredConstructor().newInstance();
	} catch (InvocationTargetException e) {
	throw new ClassNotFoundException("Invocation target exception accessing null constructor for class=" + clazz, e); //$NON-NLS-1$
	} catch (NoSuchMethodException e) {
	throw new ClassNotFoundException("No null constructor found on class=" + clazz, e); //$NON-NLS-1$
	} catch (SecurityException e) {
	throw new ClassNotFoundException("Security exception accessing null constructor for class=" + clazz, e); //$NON-NLS-1$
	}
	}

	/**
	* Get the String description associated with this ContainerTypeDescription
	* instance
	*
	* @return String description. May be null.
	*/
	public String getDescription() {
	return description;
	}

	public boolean isServer() {
	return server;
	}

	public boolean isHidden() {
	return hidden;
	}

	/**
	* Get array of supported adapters for this container type description. The
	* returned array entries will be the fully qualified names of the adapter
	* classes.
	*
	* Note that the returned types do not guarantee that a subsequent call to
	* {@link IContainer#getAdapter(Class)} with the same type name as a
	* returned value will return a non-<code>null</code> result. In other words, even if the
	* class name is in the returned array, subsequent calls to
	* {@link IContainer#getAdapter(Class)} may still return <code>null</code>.
	*
	* @return String[] of supported adapters. The entries in the returned array
	* will be the fully qualified class names of adapters supported by
	* the given description. An empty string array (String[0]) will be
	* returned if no adapters are supported.
	*/
	public String[] getSupportedAdapterTypes() {
	String[] result = new String[0];
	try {
	String[] r = getInstantiator().getSupportedAdapterTypes(this);
	if (r != null)
	result = r;
	} catch (Exception e) {
	traceAndLogException(IStatus.ERROR, "getSupportedAdapterTypes", e); //$NON-NLS-1$
	}
	List resultList = new ArrayList();
	resultList.addAll(Arrays.asList(result));
	if (!resultList.contains(IContainer.class.getName()))
	resultList.add(IContainer.class.getName());
	return (String[]) resultList.toArray(new String[] {});
	}

	protected void traceAndLogException(int code, String method, Throwable e) {
	Trace.catching(ECFPlugin.PLUGIN_ID, ECFDebugOptions.EXCEPTIONS_CATCHING, this.getClass(), method, e);
	ECFPlugin.getDefault().log(new Status(IStatus.ERROR, ECFPlugin.PLUGIN_ID, code, method, e));
	}

	/**
	* Get array of parameter types for this ContainerTypeDescription. Each of
	* the rows of the returned array specifies a Class[] of parameter types.
	* These parameter types correspond to the types of Objects that can be
	* passed into the second parameter of
	* {@link IContainerInstantiator#createInstance(ContainerTypeDescription, Object[])}.
	* For example, if this method returns a Class [] = {{ String.class,
	* String.class }, { String.class }} this indicates that a call to
	* createInstance(description,new String[] { "hello", "there" }) and a call
	* to createInstance(description,new String[] { "hello" }) will be
	* understood by the underlying provider implementation.
	*
	* @return Class[][] array of Class arrays. Each row corresponds to a
	* Class[] that describes the types of Objects for second parameter
	* to
	* {@link IContainerInstantiator#createInstance(ContainerTypeDescription, Object[])}.
	* If no parameter types are understood as arguments, a Class[0][0]
	* array will be returned
	*/
	public Class[][] getSupportedParameterTypes() {
	Class[][] result = {{}};
	try {
	Class[][] r = getInstantiator().getSupportedParameterTypes(this);
	if (r != null)
	result = r;
	} catch (Exception e) {
	traceAndLogException(IStatus.ERROR, "getSupportedParameterTypes", e); //$NON-NLS-1$
	}
	return result;
	}

	/**
	* @return String[] of container's intents.
	*
	* @since 3.0
	*/
	public String[] getSupportedIntents() {
	try {
	IContainerInstantiator ci = getInstantiator();
	return (ci instanceof IRemoteServiceContainerInstantiator) ? ((IRemoteServiceContainerInstantiator) ci).getSupportedIntents(this) : null;
	} catch (Exception e) {
	traceAndLogException(IStatus.ERROR, "getSupportedIntents", e); //$NON-NLS-1$
	return null;
	}
	}

	/**
	* @return String[] supported configs
	* @since 3.1
	*/
	public String[] getSupportedConfigs() {
	try {
	IContainerInstantiator ci = getInstantiator();
	return (ci instanceof IRemoteServiceContainerInstantiator) ? ((IRemoteServiceContainerInstantiator) ci).getSupportedConfigs(this) : null;
	} catch (Exception e) {
	traceAndLogException(IStatus.ERROR, "getSupportedConfigs", e); //$NON-NLS-1$
	return null;
	}
	}

	/**
	* @param exporterSupportedConfigs exporter supported configs
	* @return String[] imported configs
	* @since 3.1
	*/
	public String[] getImportedConfigs(String[] exporterSupportedConfigs) {
	if (exporterSupportedConfigs == null)
	return null;
	try {
	IContainerInstantiator ci = getInstantiator();
	return (ci instanceof IRemoteServiceContainerInstantiator) ? ((IRemoteServiceContainerInstantiator) ci).getImportedConfigs(this, exporterSupportedConfigs) : null;
	} catch (Exception e) {
	traceAndLogException(IStatus.ERROR, "getImportedConfigs", e); //$NON-NLS-1$
	return null;
	}
	}

	/**
	* @param importedConfigs imported configs
	* @param exportedProperties exported properties
	* @return Dictionary dictionary of properties for imported configs
	* @since 3.1
	*/
	public Dictionary getPropertiesForImportedConfigs(String[] importedConfigs, Dictionary exportedProperties) {
	if (importedConfigs == null)
	return null;
	try {
	IContainerInstantiator ci = getInstantiator();
	return (ci instanceof IRemoteServiceContainerInstantiator) ? ((IRemoteServiceContainerInstantiator) ci).getPropertiesForImportedConfigs(this, importedConfigs, exportedProperties) : null;
	} catch (Exception e) {
	traceAndLogException(IStatus.ERROR, "getPropertiesForImportedConfigs", e); //$NON-NLS-1$
	return null;
	}
	}

	}