| /* |
| * 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.directory.server.xdbm; |
| |
| |
| import java.io.IOException; |
| import java.util.Comparator; |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| import org.apache.directory.api.ldap.model.schema.SchemaManager; |
| import org.apache.directory.server.i18n.I18n; |
| |
| |
| /** |
| * A Abstract Table implementation aggregating the methods comon with all the |
| * different Table implementation. |
| * |
| * @param <K> The key |
| * @param <V> The stored value |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| public abstract class AbstractTable<K, V> implements Table<K, V> |
| { |
| /** the name of this table */ |
| protected final String name; |
| |
| /** The global SchemaManager */ |
| protected SchemaManager schemaManager; |
| |
| /** a key comparator for the keys in this Table */ |
| protected final Comparator<K> keyComparator; |
| |
| /** a value comparator for the values in this Table */ |
| protected final Comparator<V> valueComparator; |
| |
| /** the current count of Tuples in this Table */ |
| protected long count; |
| |
| /** whether or not this table allows for duplicates */ |
| protected boolean allowsDuplicates; |
| |
| /** A counter used to differ the commit on disk after N operations */ |
| protected AtomicInteger commitNumber; |
| |
| |
| /** |
| * Create an instance of Table |
| * |
| * @param schemaManager The server schemaManager |
| * @param name the name of the table |
| * @param keyComparator a key comparator |
| * @param valueComparator a value comparator |
| */ |
| protected AbstractTable( SchemaManager schemaManager, String name, Comparator<K> keyComparator, |
| Comparator<V> valueComparator ) |
| { |
| this.schemaManager = schemaManager; |
| this.name = name; |
| |
| if ( keyComparator == null ) |
| { |
| throw new IllegalArgumentException( I18n.err( I18n.ERR_591 ) ); |
| } |
| else |
| { |
| this.keyComparator = keyComparator; |
| } |
| |
| this.valueComparator = valueComparator; |
| |
| commitNumber = new AtomicInteger( 0 ); |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public Comparator<K> getKeyComparator() |
| { |
| return keyComparator; |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public Comparator<V> getValueComparator() |
| { |
| return valueComparator; |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public String getName() |
| { |
| return name; |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public long count() throws IOException |
| { |
| return count; |
| } |
| } |