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/*
* Copyright 2015 Open Networking Laboratory
*
* Licensed 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 org.onosproject.ui.table.cell;
import org.onosproject.ui.table.CellFormatter;
/**
* Base implementation of a {@link CellFormatter}. This class takes care of
* dealing with null inputs; subclasses should implement their format method
* knowing that the input is guaranteed to be non-null.
*/
public abstract class AbstractCellFormatter implements CellFormatter {
@Override
public String format(Object value) {
return value == null ? "" : nonNullFormat(value);
}
/**
* Formats the specified value into a string appropriate for displaying
* in a table cell. Note that value is guaranteed to be non-null.
*
* @param value the value
* @return the formatted string
*/
protected abstract String nonNullFormat(Object value);
}
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