/**
* 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 com.foundationdb.ais.model.TableName;
import com.foundationdb.server.error.UnsupportedCharsetException;
import com.foundationdb.server.rowdata.FieldDef;
import java.io.UnsupportedEncodingException;
/** General multi-byte byte encoding. Don't know what it will do, so
* have to go through the full conversion to bytes only to get the
* length.
*/
public class SlowMBCSEncoder extends VariableWidthEncoding {
private final String charset;
public SlowMBCSEncoder(String charset) {
this.charset = charset;
}
@Override
public int widthFromObject(final FieldDef fieldDef, final Object value) {
int prefixWidth = fieldDef.getPrefixSize();
if (value == null)
return prefixWidth;
else {
String charsetName = fieldDef.column().getCharsetName();
try {
return value.toString().getBytes(charsetName).length + prefixWidth;
}
catch (UnsupportedEncodingException ex) {
TableName table = fieldDef.column().getTable().getName();
throw new UnsupportedCharsetException(charsetName);
}
}
}
@Override
public boolean equals(Object other) {
return ((other instanceof SlowMBCSEncoder) &&
charset.equalsIgnoreCase(((SlowMBCSEncoder)other).charset));
}
}