AbstractBundleTask.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.sling.installer.core.impl.tasks;

import org.apache.sling.installer.api.InstallableResource;
import org.apache.sling.installer.api.tasks.TaskResourceGroup;
import org.apache.sling.installer.core.impl.AbstractInstallTask;

/**
 * Abstract base class for bundle related tasks.
 */
public abstract class AbstractBundleTask extends AbstractInstallTask {

    public AbstractBundleTask(final TaskResourceGroup erl, final TaskSupport support) {
        super(erl, support);
    }

    /**
     * Detect the start level for the resource.
     */
    protected int getBundleStartLevel() {
        int startLevel = 0;
        final Object providedLevel;

        if (this.getResource().getDictionary() != null) {
            if ( this.getResource().getDictionary().get(InstallableResource.BUNDLE_START_LEVEL) != null ) {
                providedLevel = this.getResource().getDictionary().get(InstallableResource.BUNDLE_START_LEVEL);
            } else {
                providedLevel = this.getResource().getDictionary().get(InstallableResource.INSTALLATION_HINT);
            }
        } else {
            providedLevel = null;
        }
        if ( providedLevel != null ) {
            if ( providedLevel instanceof Number ) {
                startLevel = ((Number)providedLevel).intValue();
            } else {
                try {
                    startLevel = Integer.valueOf(providedLevel.toString());
                } catch (final NumberFormatException nfe) {
                    // ignore this
                }
            }
        }
        return startLevel;
    }

    /**
     * Get sortable start level - low levels before high levels
     */
    protected String getSortableStartLevel() {
        final int startLevel = this.getBundleStartLevel();
        if ( startLevel == 0 ) {
            return "999";
        } else if ( startLevel < 10 ) {
            return "00" + String.valueOf(startLevel);
        } else if ( startLevel < 100 ) {
            return "0" + String.valueOf(startLevel);
        }
        return String.valueOf(startLevel);
    }
}