/*
* Copyright 2000-2016 Vaadin Ltd.
*
* 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 com.vaadin.v7.data.util.filter;
import com.vaadin.data.provider.DataProvider;
import com.vaadin.data.provider.ListDataProvider;
import com.vaadin.v7.data.Container.Filter;
import com.vaadin.v7.data.Item;
/**
* Negating filter that accepts the items rejected by another filter.
*
* This filter directly supports in-memory filtering when the negated filter
* does so.
*
* @since 6.6
*
* @deprecated As of 8.0, the whole filtering feature is integrated into {@link DataProvider}.
* For in-memory case ({@link ListDataProvider}), use predicates as filters. For back-end DataProviders,
* filters are specific to the implementation.
*/
@Deprecated
public final class Not implements Filter {
private final Filter filter;
/**
* Constructs a filter that negates a filter.
*
* @param filter
* {@link Filter} to negate, not-null
*/
public Not(Filter filter) {
this.filter = filter;
}
/**
* Returns the negated filter.
*
* @return Filter
*/
public Filter getFilter() {
return filter;
}
@Override
public boolean passesFilter(Object itemId, Item item)
throws UnsupportedOperationException {
return !filter.passesFilter(itemId, item);
}
/**
* Returns true if a change in the named property may affect the filtering
* result. Return value is the same as {@link #appliesToProperty(Object)}
* for the negated filter.
*
* @return boolean
*/
@Override
public boolean appliesToProperty(Object propertyId) {
return filter.appliesToProperty(propertyId);
}
@Override
public boolean equals(Object obj) {
if (obj == null || !getClass().equals(obj.getClass())) {
return false;
}
return filter.equals(((Not) obj).getFilter());
}
@Override
public int hashCode() {
return filter.hashCode();
}
}