/**
* DataCleaner (community edition)
* Copyright (C) 2014 Neopost - Customer Information Management
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* 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 Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*/
package org.datacleaner.components.group;
import com.google.common.base.Strings;
final class ConcatAggregateBuilder extends AbstractRowNumberAwareAggregateBuilder<String> {
private final String _concatenationSeparator;
private final StringBuilder _result;
public ConcatAggregateBuilder(final SortationType sortationType, final boolean skipNulls,
final String concatenationSeparator) {
super(sortationType, skipNulls);
_concatenationSeparator = concatenationSeparator;
_result = new StringBuilder();
}
@Override
protected void addSorted(final Object o) {
if (!Strings.isNullOrEmpty(_concatenationSeparator) && _result.length() != 0) {
_result.append(_concatenationSeparator);
}
_result.append(o == null ? "" : o.toString());
}
@Override
public String getAggregateSorted() {
return _result.toString();
}
}