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/**
* Copyright (c) 2006 Cape Clear Software. 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
*/
package org.eclipse.jst.server.generic.internal.core.util;
import java.util.Iterator;
import java.util.List;
import org.eclipse.jst.server.generic.servertype.definition.Classpath;
import org.eclipse.jst.server.generic.servertype.definition.Property;
import org.eclipse.jst.server.generic.servertype.definition.ServerRuntime;
/**
* Combines a runtimedef files
*
* - properties
* - classpaths
*
* entries with a serverdef, if the serverdef does not already have
* them - contains check is done by id.
*
* @author <a href="mailto:david.black@capeclear.com">David Black</a>
*/
public class ServerRuntimeMergeUtil {
/**
* Combines a runtime definition and a server definition
* into a single logical <code>ServerRuntime</code>.
*
* @param serverdef
* @param runtimedef
* @return serverdef
*/
public static ServerRuntime combine(ServerRuntime serverdef, ServerRuntime runtimedef) {
/**
* Add properties from runtimedef to serverdef if not already present,
* this ensures that:
*
* (1) while we are affecting the cached copy of serverdef, it is always
* required to be combined with its runtimedef (if there is one), and
* we check that the property has not already been added
*
* (2) serverdef properties can override runtimedef properties
*/
List properties = runtimedef.getProperty();
if (properties != null) {
Iterator iter = properties.iterator();
while (iter.hasNext()) {
Property prop = (Property) iter.next();
addPropertyIfNotPresent(serverdef.getProperty(), prop);
}
}
/**
* Add classpaths from runtimedef to serverdef if not already present,
* this ensures that:
*
* (1) while we are affecting the cached copy of serverdef, it is always
* required to be combined with its runtimedef (if there is one), and
* we check that the classpath has not already been added (by id)
*
* (2) serverdef classpath can override runtimedef classpath by id
*/
List classpaths = runtimedef.getClasspath();
if (classpaths != null) {
Iterator iter = classpaths.iterator();
while (iter.hasNext()) {
Classpath classpath = (Classpath)iter.next();
addClasspathIfNotPresent(serverdef.getClasspath(), classpath);
}
}
return serverdef;
}
private static void addClasspathIfNotPresent(List classpaths, Classpath classpath) {
if (!containsClasspath(classpaths, classpath.getId())) {
classpaths.add(classpath);
}
}
private static boolean containsClasspath(List properties, String id) {
boolean found = false;
Iterator iter = properties.iterator();
while (iter.hasNext()) {
Classpath classpath = (Classpath) iter.next();
if (classpath.getId().equals(id)) {
found = true;
break;
}
}
return found;
}
private static void addPropertyIfNotPresent(List properties, Property prop) {
if (!containsProperty(properties, prop.getId())) {
properties.add(prop);
}
}
private static boolean containsProperty(List properties, String id) {
boolean found = false;
Iterator iter = properties.iterator();
while (iter.hasNext()) {
Property prop = (Property) iter.next();
if (prop.getId().equals(id)) {
found = true;
break;
}
}
return found;
}
}
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