/*
* JBoss, Home of Professional Open Source.
* Copyright 2012, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.as.patching.metadata;
/**
* A modification of a content item. The {@linkplain ModificationType} describes whether the content
* is added, modified or removed.
*
* @author Emanuel Muckenhuber
*/
public class ContentModification {
private final ContentItem item;
private final byte[] targetHash;
private final ModificationType type;
private final ModificationCondition condition;
public ContentModification(ContentItem item, byte[] targetHash, ModificationType type, ModificationCondition condition) {
this.item = item;
this.targetHash = targetHash;
this.type = type;
this.condition = condition;
}
public ContentModification(ContentItem item, byte[] targetHash, ModificationType type) {
this(item, targetHash, type, null);
}
public ContentModification(ContentItem item, ContentModification existing) {
this(item, existing.getTargetHash(), existing.getType());
}
public ContentItem getItem() {
return item;
}
public <T extends ContentItem> T getItem(Class<T> expected) {
return expected.cast(item);
}
public byte[] getTargetHash() {
return targetHash;
}
public ModificationType getType() {
return type;
}
/**
* Condition which has to be satisfied for this modification to be applied
* to the target installation. If the condition is not satisfied,
* the modification will be skipped and the patch application process will
* proceed applying the remaining modifications in the patch.
*
* @return modification condition or null if the modification does not depend
* on any condition
*/
public ModificationCondition getCondition() {
return condition;
}
}