/**
* Copyright (C) 2009-2013 FoundationDB, LLC
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package com.foundationdb.server.rowdata.encoding;
import java.nio.ByteBuffer;
import com.foundationdb.server.rowdata.FieldDef;
import com.foundationdb.util.ByteSource;
public final class VarBinaryEncoder extends VariableWidthEncoding {
public static final Encoding INSTANCE = new VarBinaryEncoder();
private VarBinaryEncoder() {
}
private static ByteBuffer toByteBuffer(Object value) {
final ByteBuffer buffer;
if(value == null) {
buffer = ByteBuffer.wrap(new byte[0]);
}
else if(value instanceof byte[]) {
buffer = ByteBuffer.wrap((byte[])value);
}
else if(value instanceof ByteBuffer) {
buffer = (ByteBuffer)value;
}
else if(value instanceof ByteSource) {
ByteSource bs = (ByteSource)value;
buffer = ByteBuffer.wrap(bs.byteArray(), bs.byteArrayOffset(), bs.byteArrayLength());
}
else {
throw new IllegalArgumentException("Requires byte[] or ByteBuffer");
}
return buffer;
}
@Override
public int widthFromObject(final FieldDef fieldDef, final Object value) {
final int prefixSize = fieldDef.getPrefixSize();
final ByteBuffer bb = toByteBuffer(value);
return bb.remaining() + prefixSize;
}
}