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/*******************************************************************************
* Copyright (c) 2007, 2012 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.osgi.service.resolver;
/**
* A disabled info represents a policy decision to disable a bundle which exists in a {@link State}.
* Bundles may be disabled by adding disabled info with the {@link State#addDisabledInfo(DisabledInfo)}
* method and enabled by removing disabled info with the {@link State#removeDisabledInfo(DisabledInfo)} method.
* A bundle is not considered to be enabled unless there are no disabled info objects for the bundle.
* <p>
* While resolving the bundle if the {@link Resolver} encounters a {@link BundleDescription} which
* has disabled info returned by {@link State#getDisabledInfos(BundleDescription)} then the bundle
* must not be allowed to resolve and a ResolverError of type {@link ResolverError#DISABLED_BUNDLE}
* must be added to the state.
* </p>
* @see State
* @since 3.4
*/
public final class DisabledInfo {
private final String policyName;
private final String message;
private final BundleDescription bundle;
/**
* DisabledInfo constructor.
* @param policyName the name of the policy
* @param message the message, may be <code>null</code>
* @param bundle the bundle
*/
public DisabledInfo(String policyName, String message, BundleDescription bundle) {
if (policyName == null || bundle == null)
throw new IllegalArgumentException();
this.policyName = policyName;
this.message = message;
this.bundle = bundle;
}
/**
* Returns the name of the policy which disabled the bundle.
* @return the name of the policy
*/
public String getPolicyName() {
return policyName;
}
/**
* Returns the message describing the reason the bundle is disabled.
* @return the message
*/
public String getMessage() {
return message;
}
/**
* Returns the bundle which is disabled
* @return the bundle which is disabled
*/
public BundleDescription getBundle() {
return bundle;
}
public boolean equals(Object obj) {
if (obj == this)
return true;
if (!(obj instanceof DisabledInfo))
return false;
DisabledInfo other = (DisabledInfo) obj;
if (getBundle() == other.getBundle() && getPolicyName().equals(other.getPolicyName())) {
if (getMessage() == null ? other.getMessage() == null : getMessage().equals(other.getMessage()))
return true;
}
return false;
}
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + (bundle == null ? 0 : bundle.hashCode());
result = prime * result + (policyName == null ? 0 : policyName.hashCode());
result = prime * result + (message == null ? 0 : message.hashCode());
return result;
}
}
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