/*******************************************************************************
* Copyright (c) 2003, 2005 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
*******************************************************************************/
/*
* Created on 10-Oct-03
*
* To change the template for this generated file go to
* Window>Preferences>Java>Code Generation>Code and Comments
*/
package org.eclipse.jst.j2ee.internal;
import java.util.ArrayList;
import java.util.Arrays;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.IExtension;
import org.eclipse.core.runtime.IExtensionPoint;
import org.eclipse.core.runtime.IExtensionRegistry;
import org.eclipse.core.runtime.Platform;
/**
* @author sapnam
*
* This helper class was created for ResourceRefTypeReader and ResourceEnvRefTypeReader to read all
* valid types from extensions of each and to return a array of String to populate the Ref 'Type'
* fields.
*/
public class ResourceTypeReaderHelper {
private static String extensionPoint;
private static String typeAttributeName;
private static final String USAGE_TYPE = "type"; //$NON-NLS-1$
private static final String USAGE_ATTRIBUTE_NAME = "usage"; //$NON-NLS-1$
private static final String USAGE_COMMON = "Common"; //$NON-NLS-1$
private static final String USAGE_EJB = "EJB Jar"; //$NON-NLS-1$
private static final String SERVER_TARGET_IDS_ATTRIBUTE_NAME = "target-server-ids"; //$NON-NLS-1$
private static final String SERVER_TARGET_IDS_SEPARATOR = ","; //$NON-NLS-1$
private boolean isEJBJar;
public static final int RESOURCE_REF = 0;
public static final int RESOURCE_ENV_REF = 1;
private static final String[] EXTENSION_POINTS = {"org.eclipse.jst.j2ee.resourceRefType", "org.eclipse.jst.j2ee.resourceEnvRefType"};//$NON-NLS-1$ //$NON-NLS-2$
public static String[] getAllReferences(int refType, String serverTargetID, boolean isEJBJar, String[] baseItems) {
String extensionPointLocal = EXTENSION_POINTS[refType];
ResourceTypeReaderHelper reader = new ResourceTypeReaderHelper(extensionPointLocal, USAGE_TYPE, isEJBJar);
String[] extendedItems = null == serverTargetID ? reader.getResTypes() : reader.getResTypes(serverTargetID);
String[] allItems = null;
if (null == extendedItems || 0 == extendedItems.length) {
allItems = baseItems;
} else {
allItems = new String[baseItems.length + extendedItems.length];
System.arraycopy(baseItems, 0, allItems, 0, baseItems.length);
System.arraycopy(extendedItems, 0, allItems, baseItems.length, extendedItems.length);
}
Arrays.sort(allItems);
return allItems;
}
private ResourceTypeReaderHelper(String extPoint, String typeAttName, boolean ejbJar) {
extensionPoint = extPoint;
typeAttributeName = typeAttName;
isEJBJar = ejbJar;
}
private IExtensionPoint getExtensionPoint() {
IExtensionRegistry registry = Platform.getExtensionRegistry();
IExtensionPoint exPoint = registry.getExtensionPoint(extensionPoint);
return exPoint;
}
private ArrayList processExtensions() {
IExtension[] allExtensions = getExtensionPoint().getExtensions();
ArrayList tempTypes = new ArrayList();
for (int x = 0; x < allExtensions.length; ++x) {
IExtension config = allExtensions[x];
IConfigurationElement[] cElems = config.getConfigurationElements();
for (int i = 0; i < cElems.length; i++) {
if (getValidTypes(cElems[i]) != null) {
tempTypes.add(getValidTypes(cElems[i]));
}
}
}
return tempTypes;
}
/**
* @return an array of string containing valid Resource Ref or Resource Env Ref types.
*/
public String[] getResTypes() {
ArrayList types = processExtensions();
String[] allTypes = new String[types.size()];
for (int z = 0; z < types.size(); z++) {
allTypes[z] = (String) types.get(z);
}
return allTypes;
}
private ArrayList processExtensions(String targetServer) {
IExtension[] allExtensions = getExtensionPoint().getExtensions();
ArrayList tempTypes = new ArrayList();
for (int x = 0; x < allExtensions.length; ++x) {
IExtension config = allExtensions[x];
IConfigurationElement[] cElems = config.getConfigurationElements();
for (int i = 0; i < cElems.length; i++) {
if (getValidTypes(cElems[i], targetServer) != null) {
tempTypes.add(getValidTypes(cElems[i], targetServer));
}
}
}
return tempTypes;
}
/**
* @param element
* A configuration element.
* @return A valid Type
*/
private Object getValidTypes(IConfigurationElement element, String targetServer) {
String elementServerIDs = element.getAttribute(SERVER_TARGET_IDS_ATTRIBUTE_NAME);
if (null == elementServerIDs || isValidTargeted(elementServerIDs, targetServer)) {
String usage = element.getAttribute(USAGE_ATTRIBUTE_NAME);
if (usage.equals(USAGE_COMMON)) {
return element.getAttribute(typeAttributeName);
} else if (isEJBJar && usage.equals(USAGE_EJB)) {
return element.getAttribute(typeAttributeName);
}
}
return null;
}
/**
* @param element
* A configuration element.
* @return A valid Type
*/
private Object getValidTypes(IConfigurationElement element) {
return getValidTypes(element, null);
}
/**
* @return an array of string containing valid Resource Ref or Resource Env Ref types.
*/
public String[] getResTypes(String targetServer) {
ArrayList types = processExtensions(targetServer);
String[] allTypes = new String[types.size()];
for (int z = 0; z < types.size(); z++) {
allTypes[z] = (String) types.get(z);
}
return allTypes;
}
private boolean isValidTargeted(String attribute, String targetServerId) {
if (attribute == null || targetServerId == null)
return false;
if (attribute.trim().equalsIgnoreCase(targetServerId.trim()))
return true;
if (attribute.indexOf(targetServerId.trim() + SERVER_TARGET_IDS_SEPARATOR) >= 0)
return true;
if (attribute.trim().length() > (targetServerId.trim().length() + 1) && attribute.substring(attribute.trim().length() - targetServerId.length()).equalsIgnoreCase(targetServerId.trim()))
return true;
return false;
}
}