remove some dead code

h2/src/main/org/h2/command/ddl/DropSynonym.java

@@ -7,13 +7,10 @@ package org.h2.command.ddl;
 
 import org.h2.api.ErrorCode;
 import org.h2.command.CommandInterface;
-import org.h2.engine.Right;
 import org.h2.engine.Session;
 import org.h2.message.DbException;
 import org.h2.schema.Schema;
-import org.h2.table.Table;
 import org.h2.table.TableSynonym;
-import org.h2.table.TableType;
 
 /**
  * This class represents the statement

h2/src/main/org/h2/mvstore/DataUtils.java

@@ -14,10 +14,8 @@ import java.nio.charset.Charset;
 import java.text.MessageFormat;
 import java.util.ArrayList;
 import java.util.Collections;
-import java.util.ConcurrentModificationException;
 import java.util.HashMap;
 import java.util.Map;
-
 import org.h2.engine.Constants;
 import org.h2.util.New;
 
@@ -741,17 +739,6 @@ public class DataUtils {
         return new UnsupportedOperationException(formatMessage(0, message));
     }
 
-    /**
-     * Create a new ConcurrentModificationException.
-     *
-     * @param message the message
-     * @return the exception
-     */
-    public static ConcurrentModificationException
-            newConcurrentModificationException(String message) {
-        return new ConcurrentModificationException(formatMessage(0, message));
-    }
-
     /**
      * Create a new IllegalStateException.
      *

h2/src/main/org/h2/mvstore/MVMap.java

@@ -14,7 +14,6 @@ import java.util.List;
 import java.util.Map;
 import java.util.Set;
 import java.util.concurrent.ConcurrentMap;
-
 import org.h2.mvstore.type.DataType;
 import org.h2.mvstore.type.ObjectDataType;
 import org.h2.util.New;
@@ -128,23 +127,6 @@ public class MVMap<K, V> extends AbstractMap<K, V>
         return (V) result;
     }
 
-    /**
-     * Add or replace a key-value pair in a branch.
-     *
-     * @param root the root page
-     * @param key the key (may not be null)
-     * @param value the value (may not be null)
-     * @return the new root page
-     */
-    synchronized Page putBranch(Page root, K key, V value) {
-        DataUtils.checkArgument(value != null, "The value may not be null");
-        long v = writeVersion;
-        Page p = root.copy(v);
-        p = splitRootIfNeeded(p, v);
-        put(p, v, key, value);
-        return p;
-    }
-
     /**
      * Split the root page if necessary.
      *
@@ -484,30 +466,6 @@ public class MVMap<K, V> extends AbstractMap<K, V>
         return get(key) != null;
     }
 
-    /**
-     * Get the value for the given key, or null if not found.
-     *
-     * @param p the parent page
-     * @param key the key
-     * @return the page or null
-     */
-    protected Page binarySearchPage(Page p, Object key) {
-        int x = p.binarySearch(key);
-        if (!p.isLeaf()) {
-            if (x < 0) {
-                x = -x - 1;
-            } else {
-                x++;
-            }
-            p = p.getChildPage(x);
-            return binarySearchPage(p, key);
-        }
-        if (x >= 0) {
-            return p;
-        }
-        return null;
-    }
-
     /**
      * Remove all entries.
      */

h2/src/main/org/h2/mvstore/MVStore.java

@@ -916,17 +916,6 @@ public final class MVStore {
         }
     }
 
-    /**
-     * Whether the chunk at the given position is live.
-     *
-     * @param chunkId the chunk id
-     * @return true if it is live
-     */
-    boolean isChunkLive(int chunkId) {
-        String s = meta.get(Chunk.getMetaKey(chunkId));
-        return s != null;
-    }
-
     /**
      * Get the chunk for the given position.
      *

h2/src/main/org/h2/mvstore/Page.java

@@ -7,8 +7,6 @@ package org.h2.mvstore;
 
 import java.nio.ByteBuffer;
 import java.util.HashSet;
-import java.util.Set;
-
 import org.h2.compress.Compressor;
 import org.h2.mvstore.type.DataType;
 import org.h2.util.New;
@@ -1121,18 +1119,6 @@ public class Page {
             }
         }
 
-        /**
-         * Collect the set of chunks referenced directly by this page.
-         *
-         * @param target the target set
-         */
-        void collectReferencedChunks(Set<Integer> target) {
-            target.add(DataUtils.getPageChunkId(pos));
-            for (long p : children) {
-                target.add(DataUtils.getPageChunkId(p));
-            }
-        }
-
         private void removeChild(int index) {
             if (index == 0 && children.length == 1) {
                 children = EMPTY_ARRAY;

h2/src/main/org/h2/mvstore/db/MVPrimaryIndex.java

@@ -48,11 +48,6 @@ public class MVPrimaryIndex extends BaseIndex {
      */
     static final ValueLong MAX = ValueLong.get(Long.MAX_VALUE);
 
-    /**
-     * The zero long value.
-     */
-    static final ValueLong ZERO = ValueLong.get(0);
-
     private final MVTable mvTable;
     private final String mapName;
     private TransactionMap<Value, Value> dataMap;

h2/src/main/org/h2/mvstore/db/TransactionStore.java

@@ -1239,10 +1239,6 @@ public class TransactionStore {
             }
         }
 
-        Object getUndoLog() {
-            return transaction.store.undoLog;
-        }
-
         /**
          * Get the versioned value for the given key.
          *

h2/src/test/org/h2/test/mvcc/TestMvccMultiThreaded2.java

@@ -11,7 +11,6 @@ import java.sql.ResultSet;
 import java.sql.SQLException;
 import java.sql.Statement;
 import java.util.ArrayList;
-import org.h2.api.ErrorCode;
 import org.h2.jdbc.JdbcSQLException;
 import org.h2.test.TestBase;
 import org.h2.util.IOUtils;

h2/src/test/org/h2/test/utils/FilePathReorderWrites.java

@@ -274,7 +274,6 @@ class FileReorderWrites extends FileBase {
     @Override
     public int write(ByteBuffer src, long position) throws IOException {
         if (FilePathReorderWrites.isPartialWrites() && src.remaining() > 2) {
-            final int tmp = src.remaining();
             ByteBuffer buf1 = src.slice();
             ByteBuffer buf2 = src.slice();
             int len1 = src.remaining() / 2;