org.sventon.appl.RepositoryConfigurations.java Source code

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Here is the source code for org.sventon.appl.RepositoryConfigurations.java

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/*
 * ====================================================================
 * Copyright (c) 2005-2012 sventon project. All rights reserved.
 *
 * This software is licensed as described in the file LICENSE, which
 * you should have received as part of this distribution. The terms
 * are also available at http://www.sventon.org.
 * If newer versions of this license are posted there, you may use a
 * newer version instead, at your option.
 * ====================================================================
 */
package org.sventon.appl;

import org.apache.commons.collections.CollectionUtils;
import org.sventon.model.RepositoryName;

import java.util.Collection;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;

/**
 * Container to hold repository configurations.
 */
public class RepositoryConfigurations {

    /**
     * Map of added subversion repository names and their configurations.
     */
    private final Map<RepositoryName, RepositoryConfiguration> repositoryConfigurations = new ConcurrentHashMap<RepositoryName, RepositoryConfiguration>();

    public void add(RepositoryConfiguration repositoryConfiguration) {
        repositoryConfigurations.put(repositoryConfiguration.getName(), repositoryConfiguration);
    }

    public RepositoryConfiguration getConfiguration(RepositoryName name) {
        return repositoryConfigurations.get(name);
    }

    public RepositoryConfiguration remove(RepositoryName name) {
        repositoryConfigurations.values();
        return repositoryConfigurations.remove(name);
    }

    /**
     * Return all repository configurations.
     * Observes the same behavior as {@link java.util.Map#values()}
     *
     * @return Collection with all repository configurations.
     */
    public Collection<RepositoryConfiguration> getAllConfigurations() {
        return repositoryConfigurations.values();
    }

    /**
     * Test if there is an entry for the given repository name.
     *
     * @param repositoryName Name.
     * @return {@code true} if there is an entry for the given name.
     */
    public boolean containsConfiguration(RepositoryName repositoryName) {
        return repositoryConfigurations.containsKey(repositoryName);
    }

    /**
     * Retrieve a set of all RepositoryNames configured.
     *
     * @return Possibly empty set of repository names.
     */
    public Set<RepositoryName> getAllConfigurationNames() {
        return repositoryConfigurations.keySet();
    }

    /**
     * Count all repository configurations.
     *
     * @return Count.
     */
    public int count() {
        return repositoryConfigurations.size();
    }

    /**
     * Compare two configurations using the names of the repository configurations.
     *
     * @param configsToCompare New configurations to compare with.
     * @return A {@link org.sventon.appl.RepositoryConfigurations.ConfigsDiff} instance describing what
     *         needs to be added and removed to this configs instance to get to the {@code configsToCompare} instance.
     */
    public ConfigsDiff diffByRepositoryName(RepositoryConfigurations configsToCompare) {

        ConfigsDiff diff = new ConfigsDiff();

        Set<RepositoryName> oldRepositoryNames = getAllConfigurationNames();
        Set<RepositoryName> newRepositoryNames = configsToCompare.getAllConfigurationNames();

        @SuppressWarnings({ "unchecked" })
        Collection<RepositoryName> removed = CollectionUtils.subtract(oldRepositoryNames, newRepositoryNames);
        @SuppressWarnings({ "unchecked" })
        Collection<RepositoryName> added = CollectionUtils.subtract(newRepositoryNames, oldRepositoryNames);

        for (RepositoryName repositoryName : added) {
            diff.added.add(configsToCompare.getConfiguration(repositoryName));
        }

        for (RepositoryName repositoryName : removed) {
            diff.removed.add(getConfiguration(repositoryName));
        }

        return diff;

    }

    public void apply(ConfigsDiff diff) {
        for (RepositoryConfiguration repositoryConfiguration : diff.removed) {
            remove(repositoryConfiguration.getName());
        }

        for (RepositoryConfiguration repositoryConfiguration : diff.added) {
            add(repositoryConfiguration);
        }
    }

    public class ConfigsDiff {
        public Set<RepositoryConfiguration> added = new HashSet<RepositoryConfiguration>();
        public Set<RepositoryConfiguration> removed = new HashSet<RepositoryConfiguration>();
    }
}