/*
* 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.jena.tdb.base.block;
import org.apache.jena.atlas.io.IndentedWriter ;
import org.apache.jena.atlas.io.Printable ;
import org.apache.jena.sparql.util.Named ;
import org.apache.jena.tdb.TDBException ;
public enum BlockType implements Printable, Named
{
// The id should fit into an unsigned byte.
FREE(-1, "Free"),
BTREE_NODE(5, "BTreeNode") ,
BPTREE_BRANCH(6, "BPlusTreeBranch") ,
BPTREE_LEAF(7, "BPlusTreeLeaf") ,
DICTIONARY(10, "Dictionary") ,
RECORD_BLOCK(99, "RecordBlock"),
// [TxTDB:PATCH-UP]
UNDEF(-2, "UndefinedBlockType")
;
private final int id ;
private final String name ;
BlockType(int id, String name)
{
this.id = id ;
this.name = name ;
}
@Override
public void output(IndentedWriter out)
{ out.print(getName()) ; }
final public int id() { return id ; }
@Override
final public String getName() { return name ; }
@Override public String toString() { return getName() ; }
public static BlockType extract(int x)
{
if ( x == BTREE_NODE.id() ) return BTREE_NODE ;
if ( x == BPTREE_BRANCH.id() ) return BPTREE_BRANCH ;
if ( x == BPTREE_LEAF.id() ) return BPTREE_LEAF ;
if ( x == RECORD_BLOCK.id() ) return RECORD_BLOCK ;
if ( x == DICTIONARY.id() ) return DICTIONARY ;
throw new TDBException("No known block type for "+x) ;
}
}