/**
* 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.fuse;
import java.util.List;
class CoalesceFunction {
private final boolean _considerEmptyStringAsNull;
public CoalesceFunction(final boolean considerEmptyStringAsNull) {
_considerEmptyStringAsNull = considerEmptyStringAsNull;
}
public Object coalesce(final List<? extends Object> values) {
for (final Object value : values) {
if (value != null) {
if (_considerEmptyStringAsNull) {
if (!"".equals(value)) {
return value;
}
} else {
return value;
}
}
}
return null;
}
}