/*******************************************************************************
* Copyright 2010 Cees De Groot, Alex Boisvert, Jan Kotek
*
* Licensed 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 de.mxro.thrd.jdbm2V22.helper;
import java.io.IOError;
import java.io.IOException;
import java.util.Comparator;
import de.mxro.thrd.jdbm2V22.PrimaryHashMap;
import de.mxro.thrd.jdbm2V22.PrimaryStoreMap;
import de.mxro.thrd.jdbm2V22.PrimaryTreeMap;
import de.mxro.thrd.jdbm2V22.RecordManager;
import de.mxro.thrd.jdbm2V22.Serializer;
import de.mxro.thrd.jdbm2V22.btree.BTree;
import de.mxro.thrd.jdbm2V22.htree.HTree;
/**
* Abstract class for record manager which implements most of stuff
*
* @author Jan Kotek
*
*/
public abstract class RecordManagerImpl implements RecordManager{
public <K, V> PrimaryHashMap<K, V> hashMap(String name) {
return hashMap(name,null,null);
}
public <K, V> PrimaryHashMap<K, V> hashMap(String name, Serializer<K> keySerializer) {
return hashMap(name,keySerializer,null);
}
public synchronized <K, V> PrimaryHashMap<K, V> hashMap(String name, Serializer<K> keySerializer, Serializer<V> valueSerializer) {
try{
HTree<K, V> tree = null;
long recid = getNamedObject( name);
if ( recid != 0 ) {
tree = HTree.load( this, recid, keySerializer, valueSerializer);
} else {
tree = HTree.createInstance(this, keySerializer, valueSerializer);
setNamedObject( name, tree.getRecid() );
}
return tree.asMap();
}catch(IOException e){
throw new IOError(e);
}
}
@SuppressWarnings("unchecked")
public <K extends Comparable, V> PrimaryTreeMap<K, V> treeMap(String name) {
return treeMap(name, ComparableComparator.INSTANCE);
}
@SuppressWarnings("unchecked")
public <K extends Comparable, V> PrimaryTreeMap<K, V> treeMap(String name, Serializer<V> valueSerializer) {
return treeMap(name, ComparableComparator.INSTANCE, valueSerializer);
}
@SuppressWarnings("unchecked")
public <K extends Comparable, V> PrimaryTreeMap<K, V> treeMap(String name, Serializer<V> valueSerializer, Serializer<K> keySerializer) {
return treeMap(name, ComparableComparator.INSTANCE, valueSerializer,keySerializer);
}
public <K, V> PrimaryTreeMap<K, V> treeMap(String name, Comparator<K> keyComparator) {
return treeMap(name, keyComparator, null);
}
public <K, V> PrimaryTreeMap<K, V> treeMap(String name,
Comparator<K> keyComparator, Serializer<V> valueSerializer) {
return treeMap(name,keyComparator,valueSerializer,null);
}
public synchronized <K, V> PrimaryTreeMap<K, V> treeMap(String name,
Comparator<K> keyComparator, Serializer<V> valueSerializer, Serializer<K> keySerializer) {
try{
BTree<K,V> tree = null;
// create or load
long recid = getNamedObject( name);
if ( recid != 0 ) {
tree = BTree.load( this, recid );
} else {
tree = BTree.createInstance(this,keyComparator);
setNamedObject( name, tree.getRecid() );
}
tree.setKeySerializer(keySerializer);
tree.setValueSerializer(valueSerializer);
return tree.asMap();
}catch(IOException e){
throw new IOError(e);
}
}
public synchronized <V> PrimaryStoreMap<Long, V> storeMap(String name,
Serializer<V> valueSerializer) {
try{
BTree<Long,String> tree = null;
// create or load
long recid = getNamedObject( name);
if ( recid != 0 ) {
tree = BTree.load( this, recid );
} else {
tree = BTree.createInstance(this);
setNamedObject( name, tree.getRecid() );
}
return new PrimaryStoreMapImpl<Long, V>(tree.asMap(),valueSerializer);
}catch(IOException e){
throw new IOError(e);
}
}
@SuppressWarnings("unchecked")
public <V> PrimaryStoreMap<Long, V> storeMap(String name){
return storeMap(name,(Serializer<V>)DefaultSerializer.INSTANCE);
}
public void update( long recid, Object obj ) throws IOException{
update( recid, obj, DefaultSerializer.INSTANCE );
}
public Object fetch( long recid ) throws IOException{
return fetch( recid, DefaultSerializer.INSTANCE );
}
public long insert( Object obj )throws IOException{
return insert( obj, DefaultSerializer.INSTANCE );
}
}