/*
* 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;
/**
* A compound {@link Filter} that accepts an item if any of its filters accept
* the item.
*
* If no filters are given, the filter should reject all items.
*
* This filter also directly supports in-memory filtering when all sub-filters
* do so.
*
* @see And
*
* @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 Or extends AbstractJunctionFilter {
/**
*
* @param filters
* filters of which the Or filter will be composed
*/
public Or(Filter... filters) {
super(filters);
}
@Override
public boolean passesFilter(Object itemId, Item item)
throws UnsupportedFilterException {
for (Filter filter : getFilters()) {
if (filter.passesFilter(itemId, item)) {
return true;
}
}
return false;
}
/**
* Returns true if a change in the named property may affect the filtering
* result. If some of the sub-filters are not in-memory filters, true is
* returned.
*
* By default, all sub-filters are iterated to check if any of them applies.
* If there are no sub-filters, true is returned as an empty Or rejects all
* items.
*/
@Override
public boolean appliesToProperty(Object propertyId) {
if (getFilters().isEmpty()) {
// empty Or filters out everything
return true;
} else {
return super.appliesToProperty(propertyId);
}
}
}