added tags command to repository api

scm-core/src/main/java/sonia/scm/repository/Tag.java

@@ -0,0 +1,163 @@
+/**
+ * Copyright (c) 2010, Sebastian Sdorra All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer. 2. Redistributions in
+ * binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other
+ * materials provided with the distribution. 3. Neither the name of SCM-Manager;
+ * nor the names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * http://bitbucket.org/sdorra/scm-manager
+ *
+ */
+
+
+
+package sonia.scm.repository;
+
+//~--- non-JDK imports --------------------------------------------------------
+
+import com.google.common.base.Objects;
+
+//~--- JDK imports ------------------------------------------------------------
+
+import javax.xml.bind.annotation.XmlAccessType;
+import javax.xml.bind.annotation.XmlAccessorType;
+import javax.xml.bind.annotation.XmlRootElement;
+
+/**
+ * Represents a tag in repository.
+ *
+ * @author Sebastian Sdorra
+ * @since 1.18
+ */
+@XmlRootElement(name = "tag")
+@XmlAccessorType(XmlAccessType.FIELD)
+public final class Tag
+{
+
+  /**
+   * Constructs ...
+   *
+   */
+  public Tag() {}
+
+  /**
+   * Constructs a new tag.
+   *
+   *
+   * @param name name of the tag
+   * @param revision tagged revision
+   */
+  public Tag(String name, String revision)
+  {
+    this.name = name;
+    this.revision = revision;
+  }
+
+  //~--- methods --------------------------------------------------------------
+
+  /**
+   * {@inheritDoc}
+   *
+   *
+   * @param obj
+   *
+   * @return
+   */
+  @Override
+  public boolean equals(Object obj)
+  {
+    if (obj == null)
+    {
+      return false;
+    }
+
+    if (getClass() != obj.getClass())
+    {
+      return false;
+    }
+
+    final Tag other = (Tag) obj;
+
+    return Objects.equal(name, other.name)
+      && Objects.equal(revision, other.revision);
+  }
+
+  /**
+   * {@inheritDoc}
+   *
+   *
+   * @return
+   */
+  @Override
+  public int hashCode()
+  {
+    return Objects.hashCode(name, revision);
+  }
+
+  /**
+   * {@inheritDoc}
+   *
+   *
+   * @return
+   */
+  @Override
+  public String toString()
+  {
+    //J-
+    return Objects.toStringHelper(this)
+                  .add("name", name)
+                  .add("revision", revision)
+                  .toString();
+    //J+
+  }
+
+  //~--- get methods ----------------------------------------------------------
+
+  /**
+   * Returns the name of the tag.
+   *
+   *
+   * @return name of the tag
+   */
+  public String getName()
+  {
+    return name;
+  }
+
+  /**
+   * Id of the tagged revision.
+   *
+   *
+   * @return tagged revision id
+   */
+  public String getRevision()
+  {
+    return revision;
+  }
+
+  //~--- fields ---------------------------------------------------------------
+
+  /** Field description */
+  private String name;
+
+  /** Field description */
+  private String revision;
+}

scm-core/src/main/java/sonia/scm/repository/Tags.java

@@ -0,0 +1,232 @@
+/**
+ * Copyright (c) 2010, Sebastian Sdorra All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer. 2. Redistributions in
+ * binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other
+ * materials provided with the distribution. 3. Neither the name of SCM-Manager;
+ * nor the names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * http://bitbucket.org/sdorra/scm-manager
+ *
+ */
+
+
+
+package sonia.scm.repository;
+
+//~--- non-JDK imports --------------------------------------------------------
+
+import com.google.common.base.Objects;
+import com.google.common.collect.Lists;
+
+//~--- JDK imports ------------------------------------------------------------
+
+import java.util.Iterator;
+import java.util.List;
+
+import javax.xml.bind.annotation.XmlAccessType;
+import javax.xml.bind.annotation.XmlAccessorType;
+import javax.xml.bind.annotation.XmlElement;
+import javax.xml.bind.annotation.XmlRootElement;
+
+/**
+ * Represents all tags of a repository.
+ *
+ * @author Sebastian Sdorra
+ * @since 1.18
+ */
+@XmlRootElement(name = "tags")
+@XmlAccessorType(XmlAccessType.FIELD)
+public final class Tags implements Iterable<Tag>
+{
+
+  /**
+   * Constructs a new instance of tags.
+   * This constructor should only be called from JAXB.
+   *
+   */
+  public Tags() {}
+
+  /**
+   * Constructs a new instance of tags.
+   *
+   *
+   * @param tags list of tags.
+   */
+  public Tags(List<Tag> tags)
+  {
+    this.tags = tags;
+  }
+
+  //~--- methods --------------------------------------------------------------
+
+  /**
+   * {@inheritDoc}
+   *
+   *
+   * @param obj
+   *
+   * @return
+   */
+  @Override
+  public boolean equals(Object obj)
+  {
+    if (obj == null)
+    {
+      return false;
+    }
+
+    if (getClass() != obj.getClass())
+    {
+      return false;
+    }
+
+    final Tags other = (Tags) obj;
+
+    return Objects.equal(tags, other.tags);
+  }
+
+  /**
+   * {@inheritDoc}
+   *
+   *
+   * @return
+   */
+  @Override
+  public int hashCode()
+  {
+    return Objects.hashCode(tags);
+  }
+
+  /**
+   * {@inheritDoc}
+   *
+   *
+   * @return
+   */
+  @Override
+  public Iterator<Tag> iterator()
+  {
+    return getTags().iterator();
+  }
+
+  /**
+   * {@inheritDoc}
+   *
+   *
+   * @return
+   */
+  @Override
+  public String toString()
+  {
+    //J-
+    return Objects.toStringHelper(this)
+                  .add("tags", tags)
+                  .toString();
+    //J+
+  }
+
+  //~--- get methods ----------------------------------------------------------
+
+  /**
+   * Returns the {@link Tag} with the given name or null.
+   *
+   *
+   * @param name name of the tag
+   *
+   * @return {@link Tag} with the given name or null
+   */
+  public Tag getTagByName(String name)
+  {
+    Tag tag = null;
+
+    for (Tag t : getTags())
+    {
+      if (name.equals(t.getName()))
+      {
+        tag = t;
+
+        break;
+      }
+    }
+
+    return tag;
+  }
+
+  /**
+   * Returns the {@link Tag} with the given revision or null.
+   *
+   *
+   * @param revision revision of the tag
+   *
+   * @return {@link Tag} with the given revision or null
+   */
+  public Tag getTagByRevision(String revision)
+  {
+    Tag tag = null;
+
+    for (Tag t : getTags())
+    {
+      if (revision.equals(t.getRevision()))
+      {
+        tag = t;
+
+        break;
+      }
+    }
+
+    return tag;
+  }
+
+  /**
+   * Returns all tags of a repository.
+   *
+   *
+   * @return all tags
+   */
+  public List<Tag> getTags()
+  {
+    if (tags == null)
+    {
+      tags = Lists.newArrayList();
+    }
+
+    return tags;
+  }
+
+  //~--- set methods ----------------------------------------------------------
+
+  /**
+   * Sets all tags.
+   *
+   *
+   * @param tags tags
+   */
+  public void setTags(List<Tag> tags)
+  {
+    this.tags = tags;
+  }
+
+  //~--- fields ---------------------------------------------------------------
+
+  /** Field description */
+  @XmlElement(name = "tag")
+  private List<Tag> tags;
+}

scm-core/src/main/java/sonia/scm/repository/api/Command.java

@@ -41,5 +41,10 @@ package sonia.scm.repository.api;
  */
 public enum Command
 {
-  LOG, BROWSE, CAT, DIFF, BLAME
+  LOG, BROWSE, CAT, DIFF, BLAME,
+
+  /**
+   * @since 1.18
+   */
+  TAGS
 }

scm-core/src/main/java/sonia/scm/repository/api/RepositoryService.java

@@ -96,8 +96,8 @@ public final class RepositoryService implements Closeable
    * @param preProcessorUtil
    */
   RepositoryService(CacheManager cacheManager,
-                    RepositoryServiceProvider provider, Repository repository,
-                    PreProcessorUtil preProcessorUtil)
+    RepositoryServiceProvider provider, Repository repository,
+    PreProcessorUtil preProcessorUtil)
   {
     this.cacheManager = cacheManager;
     this.provider = provider;
@@ -150,11 +150,11 @@ public final class RepositoryService implements Closeable
     if (logger.isDebugEnabled())
     {
       logger.debug("create blame command for repository {}",
-                   repository.getName());
+        repository.getName());
     }
 
     return new BlameCommandBuilder(cacheManager, provider.getBlameCommand(),
-                                   repository, preProcessorUtil);
+      repository, preProcessorUtil);
   }
 
   /**
@@ -169,11 +169,11 @@ public final class RepositoryService implements Closeable
     if (logger.isDebugEnabled())
     {
       logger.debug("create browse command for repository {}",
-                   repository.getName());
+        repository.getName());
     }
 
     return new BrowseCommandBuilder(cacheManager, provider.getBrowseCommand(),
-                                    repository, preProcessorUtil);
+      repository, preProcessorUtil);
   }
 
   /**
@@ -188,7 +188,7 @@ public final class RepositoryService implements Closeable
     if (logger.isDebugEnabled())
     {
       logger.debug("create cat command for repository {}",
-                   repository.getName());
+        repository.getName());
     }
 
     return new CatCommandBuilder(provider.getCatCommand());
@@ -207,7 +207,7 @@ public final class RepositoryService implements Closeable
     if (logger.isDebugEnabled())
     {
       logger.debug("create diff command for repository {}",
-                   repository.getName());
+        repository.getName());
     }
 
     return new DiffCommandBuilder(provider.getDiffCommand());
@@ -225,11 +225,11 @@ public final class RepositoryService implements Closeable
     if (logger.isDebugEnabled())
     {
       logger.debug("create log command for repository {}",
-                   repository.getName());
+        repository.getName());
     }
 
     return new LogCommandBuilder(cacheManager, provider.getLogCommand(),
-                                 repository, preProcessorUtil);
+      repository, preProcessorUtil);
   }
 
   /**
@@ -242,6 +242,25 @@ public final class RepositoryService implements Closeable
     return repository;
   }
 
+  /**
+   * The tags command list all repository tag.
+   *
+   * @return instance of {@link TagsCommandBuilder}
+   * @throws CommandNotSupportedException if the command is not supported
+   *         by the implementation of the repository service provider.
+   */
+  public TagsCommandBuilder getTagsCommand()
+  {
+    if (logger.isDebugEnabled())
+    {
+      logger.debug("create tags command for repository {}",
+        repository.getName());
+    }
+
+    return new TagsCommandBuilder(cacheManager, provider.getTagsCommand(),
+      repository);
+  }
+
   /**
    * Returns true if the command is supported by the repository service.
    *

scm-core/src/main/java/sonia/scm/repository/api/RepositoryServiceFactory.java

@@ -60,6 +60,7 @@ import sonia.scm.repository.RepositoryHookEvent;
 import sonia.scm.repository.RepositoryListener;
 import sonia.scm.repository.RepositoryManager;
 import sonia.scm.repository.RepositoryNotFoundException;
+import sonia.scm.repository.Tags;
 import sonia.scm.repository.spi.RepositoryServiceProvider;
 import sonia.scm.repository.spi.RepositoryServiceResolver;
 import sonia.scm.security.ScmSecurityException;
@@ -106,7 +107,7 @@ import java.util.Set;
  *
  * @author Sebastian Sdorra
  * @since 1.17
- * 
+ *
  * @apiviz.landmark
  * @apiviz.uses sonia.scm.repository.api.RepositoryService
  */
@@ -134,11 +135,10 @@ public final class RepositoryServiceFactory
    * @param preProcessorUtil helper object for pre processor handling
    */
   @Inject
-  public RepositoryServiceFactory(
-          CacheManager cacheManager, RepositoryManager repositoryManager,
-          Provider<WebSecurityContext> securityContextProvider,
-          Set<RepositoryServiceResolver> resolvers,
-          PreProcessorUtil preProcessorUtil)
+  public RepositoryServiceFactory(CacheManager cacheManager,
+    RepositoryManager repositoryManager,
+    Provider<WebSecurityContext> securityContextProvider,
+    Set<RepositoryServiceResolver> resolvers, PreProcessorUtil preProcessorUtil)
   {
     this.cacheManager = cacheManager;
     this.repositoryManager = repositoryManager;
@@ -172,17 +172,17 @@ public final class RepositoryServiceFactory
    *         for that repository
    */
   public RepositoryService create(String repositoryId)
-          throws RepositoryNotFoundException
+    throws RepositoryNotFoundException
   {
     Preconditions.checkArgument(!Strings.isNullOrEmpty(repositoryId),
-                                "a non empty repositoryId is required");
+      "a non empty repositoryId is required");
 
     Repository repository = repositoryManager.get(repositoryId);
 
     if (repository == null)
     {
       throw new RepositoryNotFoundException(
-          "could not find a repository with id ".concat(repositoryId));
+        "could not find a repository with id ".concat(repositoryId));
     }
 
     return create(repository);
@@ -207,12 +207,12 @@ public final class RepositoryServiceFactory
    *         for that repository
    */
   public RepositoryService create(String type, String name)
-          throws RepositoryNotFoundException
+    throws RepositoryNotFoundException
   {
     Preconditions.checkArgument(!Strings.isNullOrEmpty(type),
-                                "a non empty type is required");
+      "a non empty type is required");
     Preconditions.checkArgument(!Strings.isNullOrEmpty(name),
-                                "a non empty name is required");
+      "a non empty name is required");
 
     Repository repository = repositoryManager.get(type, name);
 
@@ -250,7 +250,7 @@ public final class RepositoryServiceFactory
 
     // check for read permissions of current user
     PermissionUtil.assertPermission(repository, securityContextProvider,
-                                    PermissionType.READ);
+      PermissionType.READ);
 
     RepositoryService service = null;
 
@@ -263,12 +263,12 @@ public final class RepositoryServiceFactory
         if (logger.isDebugEnabled())
         {
           logger.debug(
-              "create new repository service for repository {} of type {}",
-              repository.getName(), repository.getType());
+            "create new repository service for repository {} of type {}",
+            repository.getName(), repository.getType());
         }
 
         service = new RepositoryService(cacheManager, provider, repository,
-                                        preProcessorUtil);
+          preProcessorUtil);
 
         break;
       }
@@ -292,7 +292,7 @@ public final class RepositoryServiceFactory
    * @author         Enter your name here...
    */
   private static class CacheClearHook extends PostReceiveRepositoryHook
-          implements RepositoryListener
+    implements RepositoryListener
   {
 
     /**
@@ -305,14 +305,14 @@ public final class RepositoryServiceFactory
     {
       this.blameCache =
         cacheManager.getCache(BlameCommandBuilder.CacheKey.class,
-                              BlameResult.class,
-                              BlameCommandBuilder.CACHE_NAME);
+          BlameResult.class, BlameCommandBuilder.CACHE_NAME);
       this.browseCache =
         cacheManager.getCache(BrowseCommandBuilder.CacheKey.class,
-                              BrowserResult.class,
-                              BrowseCommandBuilder.CACHE_NAME);
+          BrowserResult.class, BrowseCommandBuilder.CACHE_NAME);
       this.logCache = cacheManager.getCache(LogCommandBuilder.CacheKey.class,
-              ChangesetPagingResult.class, LogCommandBuilder.CACHE_NAME);
+        ChangesetPagingResult.class, LogCommandBuilder.CACHE_NAME);
+      this.tagsCache = cacheManager.getCache(TagsCommandBuilder.CacheKey.class,
+        Tags.class, TagsCommandBuilder.CACHE_NAME);
     }
 
     //~--- methods ------------------------------------------------------------
@@ -372,6 +372,7 @@ public final class RepositoryServiceFactory
       blameCache.removeAll(filter);
       browseCache.removeAll(filter);
       logCache.removeAll(filter);
+      tagsCache.removeAll(filter);
     }
 
     //~--- fields -------------------------------------------------------------
@@ -384,6 +385,9 @@ public final class RepositoryServiceFactory
 
     /** Field description */
     private Cache<LogCommandBuilder.CacheKey, ChangesetPagingResult> logCache;
+
+    /** Field description */
+    private Cache<TagsCommandBuilder.CacheKey, Tags> tagsCache;
   }
 
 

scm-core/src/main/java/sonia/scm/repository/api/TagsCommandBuilder.java

@@ -0,0 +1,254 @@
+/**
+ * Copyright (c) 2010, Sebastian Sdorra All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer. 2. Redistributions in
+ * binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other
+ * materials provided with the distribution. 3. Neither the name of SCM-Manager;
+ * nor the names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * http://bitbucket.org/sdorra/scm-manager
+ *
+ */
+
+
+
+package sonia.scm.repository.api;
+
+//~--- non-JDK imports --------------------------------------------------------
+
+import com.google.common.base.Objects;
+
+import sonia.scm.cache.Cache;
+import sonia.scm.cache.CacheManager;
+import sonia.scm.repository.Repository;
+import sonia.scm.repository.RepositoryCacheKey;
+import sonia.scm.repository.Tag;
+import sonia.scm.repository.Tags;
+import sonia.scm.repository.spi.TagsCommand;
+
+//~--- JDK imports ------------------------------------------------------------
+
+import java.util.List;
+
+/**
+ * The tags command list all repository tag.<br />
+ * <br />
+ * <b>Samples:</b>
+ * <br />
+ * <br />
+ * Return all tags of a repository:<br />
+ * <pre><code>
+ * TagsCommandBuilder tagsCommand = repositoryService.getLogCommand();
+ * Tags tags = tagsCommand.getTags();
+ * </code></pre>
+ * @author Sebastian Sdorra
+ */
+public final class TagsCommandBuilder
+{
+
+  /** name of the cache */
+  static final String CACHE_NAME = "sonia.cache.cmd.tags";
+
+  //~--- constructors ---------------------------------------------------------
+
+  /**
+   * Constructs a new {@link TagsCommandBuilder}, this constructor should
+   * only be called from the {@link RepositoryService}.
+   *
+   * @param cacheManager cache manager
+   * @param logCommand implementation of the {@link TagsCommand}
+   * @param repository repository
+   */
+  TagsCommandBuilder(CacheManager cacheManager, TagsCommand command,
+    Repository repository)
+  {
+    this.cache = cacheManager.getCache(CacheKey.class, Tags.class, CACHE_NAME);
+    this.command = command;
+    this.repository = repository;
+  }
+
+  //~--- methods --------------------------------------------------------------
+
+  /**
+   * Returns all tags from the repository.
+   *
+   *
+   * @return tags from the repository
+   */
+  public Tags getTags()
+  {
+    Tags tags = null;
+
+    if (disableCache)
+    {
+      tags = getTagsFromCommand();
+    }
+    else
+    {
+      CacheKey key = new CacheKey(repository);
+
+      tags = cache.get(key);
+
+      if (tags == null)
+      {
+        tags = getTagsFromCommand();
+
+        if (tags != null)
+        {
+          cache.put(key, tags);
+        }
+      }
+    }
+
+    return tags;
+  }
+
+  //~--- set methods ----------------------------------------------------------
+
+  /**
+   * Disables the cache for tags. This means that every {@link Tag}
+   * is directly retrieved from the {@link Repository}. <b>Note: </b> Disabling
+   * the cache cost a lot of performance and could be much more slower.
+   *
+   *
+   * @param disableCache true to disable the cache
+   *
+   * @return {@code this}
+   */
+  public TagsCommandBuilder setDisableCache(boolean disableCache)
+  {
+    this.disableCache = disableCache;
+
+    return this;
+  }
+
+  //~--- get methods ----------------------------------------------------------
+
+  /**
+   * Method description
+   *
+   *
+   * @return
+   */
+  private Tags getTagsFromCommand()
+  {
+    List<Tag> tagList = command.getTags();
+
+    return new Tags(tagList);
+  }
+
+  //~--- inner classes --------------------------------------------------------
+
+  /**
+   * Class description
+   *
+   *
+   * @version        Enter version here..., 12/07/05
+   * @author         Enter your name here...
+   */
+  static class CacheKey implements RepositoryCacheKey
+  {
+
+    /**
+     * Constructs ...
+     *
+     *
+     * @param repository
+     */
+    public CacheKey(Repository repository)
+    {
+      this.repositoryId = repository.getId();
+    }
+
+    //~--- methods ------------------------------------------------------------
+
+    /**
+     * Method description
+     *
+     *
+     * @param obj
+     *
+     * @return
+     */
+    @Override
+    public boolean equals(Object obj)
+    {
+      if (obj == null)
+      {
+        return false;
+      }
+
+      if (getClass() != obj.getClass())
+      {
+        return false;
+      }
+
+      final CacheKey other = (CacheKey) obj;
+
+      return Objects.equal(repositoryId, other.repositoryId);
+    }
+
+    /**
+     * Method description
+     *
+     *
+     * @return
+     */
+    @Override
+    public int hashCode()
+    {
+      return Objects.hashCode(repositoryId);
+    }
+
+    //~--- get methods --------------------------------------------------------
+
+    /**
+     * Method description
+     *
+     *
+     * @return
+     */
+    @Override
+    public String getRepositoryId()
+    {
+      return repositoryId;
+    }
+
+    //~--- fields -------------------------------------------------------------
+
+    /** Field description */
+    private String repositoryId;
+  }
+
+
+  //~--- fields ---------------------------------------------------------------
+
+  /** cache for changesets */
+  private Cache<CacheKey, Tags> cache;
+
+  /** Field description */
+  private TagsCommand command;
+
+  /** Field description */
+  private boolean disableCache = false;
+
+  /** Field description */
+  private Repository repository;
+}

scm-core/src/main/java/sonia/scm/repository/spi/RepositoryServiceProvider.java

@@ -134,4 +134,15 @@ public abstract class RepositoryServiceProvider implements Closeable
   {
     throw new CommandNotSupportedException(Command.LOG);
   }
+
+  /**
+   * Method description
+   *
+   *
+   * @return
+   */
+  public TagsCommand getTagsCommand()
+  {
+    throw new CommandNotSupportedException(Command.TAGS);
+  }
 }

scm-core/src/main/java/sonia/scm/repository/spi/TagsCommand.java

@@ -0,0 +1,56 @@
+/**
+ * Copyright (c) 2010, Sebastian Sdorra All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer. 2. Redistributions in
+ * binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other
+ * materials provided with the distribution. 3. Neither the name of SCM-Manager;
+ * nor the names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * http://bitbucket.org/sdorra/scm-manager
+ *
+ */
+
+
+
+package sonia.scm.repository.spi;
+
+//~--- non-JDK imports --------------------------------------------------------
+
+import sonia.scm.repository.Tag;
+
+//~--- JDK imports ------------------------------------------------------------
+
+import java.util.List;
+
+/**
+ *
+ * @author Sebastian Sdorra
+ */
+public interface TagsCommand
+{
+
+  /**
+   * Method description
+   *
+   *
+   * @return
+   */
+  public List<Tag> getTags();
+}

scm-webapp/src/main/resources/config/ehcache.xml

@@ -193,4 +193,13 @@
         copyOnRead="true"
   />
   
+  <cache
+        name="sonia.cache.cmd.tags"
+        maxElementsInMemory="1000"
+        eternal="false"
+        overflowToDisk="false"
+        timeToLiveSeconds="86400"
+        diskPersistent="false"
+  />
+  
 </ehcache>