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/*******************************************************************************
* Copyright (c) 2009 EclipseSource 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:
* EclipseSource - initial API and implementation
******************************************************************************/
package org.eclipse.equinox.p2.publisher.actions;
import org.eclipse.equinox.internal.p2.metadata.LDAPQuery;
import org.eclipse.equinox.internal.provisional.p2.metadata.Version;
import org.eclipse.equinox.internal.provisional.p2.metadata.query.IQueryable;
import org.eclipse.equinox.internal.provisional.p2.metadata.query.InstallableUnitQuery;
import org.eclipse.equinox.p2.metadata.IInstallableUnit;
import org.eclipse.equinox.p2.metadata.query.IQueryResult;
/**
* An IFilterAdvice that looks up the desired IU in the publisher's input metadata
* repository and returns whatever filter is found there.
*/
public class QueryableFilterAdvice implements IFilterAdvice {
private IQueryable<IInstallableUnit> queryable;
public QueryableFilterAdvice(IQueryable<IInstallableUnit> queryable) {
this.queryable = queryable;
}
public String getFilter(String id, Version version, boolean exact) {
InstallableUnitQuery query = new InstallableUnitQuery(id, version);
IQueryResult<IInstallableUnit> result = queryable.query(query, null);
if (!result.isEmpty())
return ((LDAPQuery) result.iterator().next().getFilter()).getFilter();
if (exact)
return null;
query = new InstallableUnitQuery(id);
result = queryable.query(query, null);
if (!result.isEmpty())
return ((LDAPQuery) result.iterator().next().getFilter()).getFilter();
return null;
}
public boolean isApplicable(String configSpec, boolean includeDefault, String id, Version version) {
return true;
}
}
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