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- /*
- * Copyright (c) 2006-2015 DMDirc Developers
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
- package com.dmdirc.updater.installing;
-
- import com.dmdirc.updater.UpdateComponent;
- import com.dmdirc.updater.retrieving.UpdateRetrievalResult;
-
- /**
- * Base class for {@link UpdateInstallationStrategy} implementations that can only handle a specific
- * subclass of {@link UpdateComponent} or {@link UpdateRetrievalResult}.
- *
- * @param <S> The type of {@link UpdateComponent} that can be handled
- * @param <T> The type of {@link UpdateRetrievalResult} that can be handled
- */
- public abstract class TypeSensitiveInstallationStrategy<S extends UpdateComponent, T extends UpdateRetrievalResult>
- implements UpdateInstallationStrategy {
-
- /** The type of {@link UpdateComponent} that can be handled. */
- private final Class<S> updateComponentClass;
- /** The type of {@link UpdateRetrievalResult} that can be handled. */
- private final Class<T> updateRetrievalClass;
-
- public TypeSensitiveInstallationStrategy(final Class<S> updateComponentClass,
- final Class<T> updateRetrievalClass) {
- this.updateComponentClass = updateComponentClass;
- this.updateRetrievalClass = updateRetrievalClass;
- }
-
- @Override
- public boolean canHandle(final UpdateRetrievalResult retrievalResult) {
- return updateComponentClass.isAssignableFrom(
- retrievalResult.getCheckResult().getComponent().getClass())
- && updateRetrievalClass.isAssignableFrom(retrievalResult.getClass());
- }
-
- @Override
- @SuppressWarnings("unchecked")
- public void install(final UpdateRetrievalResult retrievalResult) {
- installImpl((S) retrievalResult.getCheckResult().getComponent(), (T) retrievalResult);
- }
-
- /**
- * Installs the retrieved update for the given component.
- *
- * @param component The component to be updated
- * @param retrievalResult The result of the retrieval operation
- */
- protected abstract void installImpl(S component, T retrievalResult);
-
- }
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