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/*******************************************************************************
* Copyright (c) 2009 Daniel Le Berre 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:
* Daniel Le Berre - initial API and implementation
* IBM - ongoing development
******************************************************************************/
package org.eclipse.equinox.internal.p2.director;
import java.util.Arrays;
import org.eclipse.core.runtime.*;
import org.eclipse.equinox.p2.metadata.*;
import org.eclipse.osgi.util.NLS;
public abstract class Explanation implements Comparable<Explanation> {
public static class PatchedHardRequirement extends Explanation {
public final IInstallableUnit iu;
public final IInstallableUnitPatch patch;
public final IRequirement req;
public PatchedHardRequirement(IInstallableUnit iu, IInstallableUnitPatch patch) {
this.iu = iu;
this.req = null;
this.patch = patch;
}
public PatchedHardRequirement(IInstallableUnit iu, IRequirement req, IInstallableUnitPatch patch) {
this.iu = iu;
this.req = req;
this.patch = patch;
}
public int orderValue() {
return 6;
}
public IStatus toStatus() {
MultiStatus result = new MultiStatus(DirectorActivator.PI_DIRECTOR, 1, Messages.Explanation_unsatisfied, null);
final String fromString = patch.toString() + ' ' + getUserReadableName(iu);
result.add(new Status(IStatus.ERROR, DirectorActivator.PI_DIRECTOR, NLS.bind(Messages.Explanation_fromPatch, fromString)));
result.add(new Status(IStatus.ERROR, DirectorActivator.PI_DIRECTOR, NLS.bind(Messages.Explanation_to, req)));
return result;
}
public String toString() {
return NLS.bind(Messages.Explanation_patchedHardDependency, new Object[] {patch, iu, req});
}
}
public static class HardRequirement extends Explanation {
public final IInstallableUnit iu;
public final IRequirement req;
public HardRequirement(IInstallableUnit iu, IRequirement req) {
this.iu = iu;
this.req = req;
}
public int orderValue() {
return 5;
}
public IStatus toStatus() {
MultiStatus result = new MultiStatus(DirectorActivator.PI_DIRECTOR, 1, Messages.Explanation_unsatisfied, null);
result.add(new Status(IStatus.ERROR, DirectorActivator.PI_DIRECTOR, NLS.bind(Messages.Explanation_from, getUserReadableName(iu))));
result.add(new Status(IStatus.ERROR, DirectorActivator.PI_DIRECTOR, NLS.bind(Messages.Explanation_to, req)));
return result;
}
public String toString() {
return NLS.bind(Messages.Explanation_hardDependency, iu, req);
}
}
public static class IUInstalled extends Explanation {
public final IInstallableUnit iu;
public IUInstalled(IInstallableUnit iu) {
this.iu = iu;
}
public int orderValue() {
return 2;
}
public String toString() {
return NLS.bind(Messages.Explanation_alreadyInstalled, iu);
}
public IStatus toStatus() {
return new Status(IStatus.ERROR, DirectorActivator.PI_DIRECTOR, NLS.bind(Messages.Explanation_alreadyInstalled, getUserReadableName(iu)));
}
}
public static class IUToInstall extends Explanation {
public final IInstallableUnit iu;
public IUToInstall(IInstallableUnit iu) {
this.iu = iu;
}
public int orderValue() {
return 1;
}
public String toString() {
return NLS.bind(Messages.Explanation_toInstall, iu);
}
public IStatus toStatus() {
return new Status(IStatus.ERROR, DirectorActivator.PI_DIRECTOR, NLS.bind(Messages.Explanation_toInstall, getUserReadableName(iu)));
}
}
public static class MissingIU extends Explanation {
public final IInstallableUnit iu;
public final IRequirement req;
public boolean rootIu;
public MissingIU(IInstallableUnit iu, IRequirement req, boolean rootIU) {
this.iu = iu;
this.req = req;
this.rootIu = rootIu;
}
public int orderValue() {
return 3;
}
public int shortAnswer() {
return MISSING_REQUIREMENT;
}
public String toString() {
if (rootIu) {
return NLS.bind(Messages.Explanation_missingRootRequired, req);
}
if (req.getFilter() == null) {
return NLS.bind(Messages.Explanation_missingRequired, iu, req);
}
return NLS.bind(Messages.Explanation_missingRequiredFilter, new Object[] {req.getFilter(), iu, req});
}
public IStatus toStatus() {
if (req.getFilter() == null) {
return new Status(IStatus.ERROR, DirectorActivator.PI_DIRECTOR, NLS.bind(Messages.Explanation_missingRequired, getUserReadableName(iu), req));
}
return new Status(IStatus.ERROR, DirectorActivator.PI_DIRECTOR, NLS.bind(Messages.Explanation_missingRequiredFilter, new Object[] {req.getFilter(), getUserReadableName(iu), req}));
}
}
public static class MissingGreedyIU extends Explanation {
public final IInstallableUnit iu;
public MissingGreedyIU(IInstallableUnit iu) {
this.iu = iu;
}
public int orderValue() {
return 3;
}
public int shortAnswer() {
return MISSING_REQUIREMENT;
}
public String toString() {
return NLS.bind(Messages.Explanation_missingNonGreedyRequired, iu);
}
public IStatus toStatus() {
return new Status(IStatus.ERROR, DirectorActivator.PI_DIRECTOR, NLS.bind(Messages.Explanation_missingNonGreedyRequired, getUserReadableName(iu)));
}
}
public static class Singleton extends Explanation {
public final IInstallableUnit[] ius;
public Singleton(IInstallableUnit[] ius) {
this.ius = ius;
}
public int orderValue() {
return 4;
}
public int shortAnswer() {
return VIOLATED_SINGLETON_CONSTRAINT;
}
public IStatus toStatus() {
MultiStatus result = new MultiStatus(DirectorActivator.PI_DIRECTOR, 1, NLS.bind(Messages.Explanation_singleton, ""), null); //$NON-NLS-1$
for (int i = 0; i < ius.length; i++)
result.add(new Status(IStatus.ERROR, DirectorActivator.PI_DIRECTOR, getUserReadableName(ius[i])));
return result;
}
public String toString() {
return NLS.bind(Messages.Explanation_singleton, Arrays.asList(ius));
}
}
public static final int MISSING_REQUIREMENT = 1;
public static final Explanation OPTIONAL_REQUIREMENT = new Explanation() {
public int orderValue() {
return 6;
}
public String toString() {
return Messages.Explanation_optionalDependency;
}
};
public static final int VIOLATED_SINGLETON_CONSTRAINT = 2;
protected Explanation() {
super();
}
public int compareTo(Explanation exp) {
if (this.orderValue() == exp.orderValue()) {
return this.toString().compareTo(exp.toString());
}
return this.orderValue() - exp.orderValue();
}
protected abstract int orderValue();
public int shortAnswer() {
throw new UnsupportedOperationException();
}
/**
* Returns a representation of this explanation as a status object.
*/
public IStatus toStatus() {
return new Status(IStatus.ERROR, DirectorActivator.PI_DIRECTOR, toString());
}
protected String getUserReadableName(IInstallableUnit iu) {
if (iu == null)
return ""; //$NON-NLS-1$
String result = getLocalized(iu);
if (result == null)
return iu.toString();
return result + ' ' + iu.getVersion() + " (" + iu.toString() + ')'; //$NON-NLS-1$
}
private String getLocalized(IInstallableUnit iu) {
String value = iu.getProperty(IInstallableUnit.PROP_NAME);
if (value == null || value.length() <= 1 || value.charAt(0) != '%')
return value;
final String actualKey = value.substring(1); // Strip off the %
return iu.getProperty("df_LT." + actualKey); //$NON-NLS-1$
}
}
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