/*
* 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 com.hp.hpl.jena.tdb.store.bulkloader2;
import org.apache.jena.atlas.lib.Bytes ;
import org.apache.jena.atlas.lib.ColumnMap ;
import com.hp.hpl.jena.tdb.base.record.Record ;
import com.hp.hpl.jena.tdb.base.record.RecordException ;
import com.hp.hpl.jena.tdb.base.record.RecordFactory ;
public class RecordLib
{
public static void main(String...argv)
{
RecordFactory rf = new RecordFactory(8,4) ;
Record r = rf.create() ;
Bytes.setLong(0x123456789ABCDEF0L, r.getKey()) ;
Bytes.setInt(0x22334455, r.getValue()) ;
ColumnMap cMap = new ColumnMap("XYAB", "BYXA") ;
Record r2 = copyRecord(rf, r, cMap) ;
System.out.println(r) ;
System.out.println(r2) ;
}
/** Copy a record, with reordering of the key */
public static Record copyRecord(RecordFactory recordFactory, Record record, ColumnMap colMap)
{
int kLen = record.getKey().length ;
int vLen = record.getValue() == null ? 0 : record.getValue().length ;
if ( recordFactory == null )
recordFactory = new RecordFactory(kLen, vLen) ;
int N = colMap.length() ;
if ( kLen%N != 0 )
throw new RecordException("Key length is not a multiple of the number of slots") ;
int itemLen = kLen/N ;
Record record2 = recordFactory.create() ;
byte[] k = record2.getKey() ;
for ( int i = 0 ; i < N ; i++ )
{
int j = colMap.mapSlotIdx(i) ;
System.arraycopy(record.getKey(), i*itemLen, record2.getKey(), j*itemLen, itemLen) ;
}
if ( vLen != 0 )
System.arraycopy(record.getValue(), 0, record2.getValue(), 0, vLen) ;
return record2 ;
}
}