LUCENE-1257: CommitPoint -> IndexCommit in generics

git-svn-id: https://svn.apache.org/repos/asf/lucene/java/trunk@826533 13f79535-47bb-0310-9956-ffa450edef68

src/java/org/apache/lucene/index/IndexDeletionPolicy.java

@@ -70,7 +70,7 @@ public interface IndexDeletionPolicy {
    * {@link IndexCommit point-in-time commits},
    *  sorted by age (the 0th one is the oldest commit).
    */
-  public void onInit(List<IndexCommit> commits) throws IOException;
+  public void onInit(List<? extends IndexCommit> commits) throws IOException;
 
   /**
    * <p>This is called each time the writer completed a commit.
@@ -94,5 +94,5 @@ public interface IndexDeletionPolicy {
    * @param commits List of {@link IndexCommit},
    *  sorted by age (the 0th one is the oldest commit).
    */
-  public void onCommit(List<IndexCommit> commits) throws IOException;
+  public void onCommit(List<? extends IndexCommit> commits) throws IOException;
 }

src/java/org/apache/lucene/index/IndexFileDeleter.java

@@ -84,14 +84,14 @@ final class IndexFileDeleter {
    * default delete policy (KeepOnlyLastCommitDeletionPolicy).
    * Other policies may leave commit points live for longer
    * in which case this list would be longer than 1: */
-  private List commits = new ArrayList();
+  private List<CommitPoint> commits = new ArrayList<CommitPoint>();
 
   /* Holds files we had incref'd from the previous
    * non-commit checkpoint: */
   private List<Collection<String>> lastFiles = new ArrayList<Collection<String>>();
 
   /* Commits that the IndexDeletionPolicy have decided to delete: */ 
-  private List commitsToDelete = new ArrayList();
+  private List<CommitPoint> commitsToDelete = new ArrayList<CommitPoint>();
 
   private PrintStream infoStream;
   private Directory directory;
@@ -565,13 +565,13 @@ final class IndexFileDeleter {
     String segmentsFileName;
     boolean deleted;
     Directory directory;
-    Collection<IndexCommit> commitsToDelete;
+    Collection<CommitPoint> commitsToDelete;
     long version;
     long generation;
     final boolean isOptimized;
     final Map<String,String> userData;
 
-    public CommitPoint(Collection<IndexCommit> commitsToDelete, Directory directory, SegmentInfos segmentInfos) throws IOException {
+    public CommitPoint(Collection<CommitPoint> commitsToDelete, Directory directory, SegmentInfos segmentInfos) throws IOException {
       this.directory = directory;
       this.commitsToDelete = commitsToDelete;
       userData = segmentInfos.getUserData();

src/java/org/apache/lucene/index/KeepOnlyLastCommitDeletionPolicy.java

@@ -31,7 +31,7 @@ public final class KeepOnlyLastCommitDeletionPolicy implements IndexDeletionPoli
   /**
    * Deletes all commits except the most recent one.
    */
-  public void onInit(List<IndexCommit> commits) {
+  public void onInit(List<? extends IndexCommit> commits) {
     // Note that commits.size() should normally be 1:
     onCommit(commits);
   }
@@ -39,7 +39,7 @@ public final class KeepOnlyLastCommitDeletionPolicy implements IndexDeletionPoli
   /**
    * Deletes all commits except the most recent one.
    */
-  public void onCommit(List<IndexCommit> commits) {
+  public void onCommit(List<? extends IndexCommit> commits) {
     // Note that commits.size() should normally be 2 (if not
     // called by onInit above):
     int size = commits.size();

src/java/org/apache/lucene/index/SnapshotDeletionPolicy.java

@@ -52,12 +52,12 @@ public class SnapshotDeletionPolicy implements IndexDeletionPolicy {
     this.primary = primary;
   }
 
-  public synchronized void onInit(List<IndexCommit> commits) throws IOException {
+  public synchronized void onInit(List<? extends IndexCommit> commits) throws IOException {
     primary.onInit(wrapCommits(commits));
     lastCommit = commits.get(commits.size()-1);
   }
 
-  public synchronized void onCommit(List<IndexCommit> commits) throws IOException {
+  public synchronized void onCommit(List<? extends IndexCommit> commits) throws IOException {
     primary.onCommit(wrapCommits(commits));
     lastCommit = commits.get(commits.size()-1);
   }
@@ -123,7 +123,7 @@ public class SnapshotDeletionPolicy implements IndexDeletionPolicy {
     }
   }
 
-  private List<IndexCommit> wrapCommits(List<IndexCommit> commits) {
+  private List<IndexCommit> wrapCommits(List<? extends IndexCommit> commits) {
     final int count = commits.size();
     List<IndexCommit> myCommits = new ArrayList<IndexCommit>(count);
     for(int i=0;i<count;i++)