/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.flink.cep.pattern;
import org.apache.flink.api.common.functions.FilterFunction;
/**
* @deprecated This is only used when migrating from an older Flink version.
* Use the {@link org.apache.flink.cep.pattern.conditions.SubtypeCondition} instead.
*
* <p>A filter function which filters elements of the given type. A element if filtered out iff it
* is not assignable to the given subtype of T.
*
* @param <T> Type of the elements to be filtered
*/
@Deprecated
public class SubtypeFilterFunction<T> implements FilterFunction<T> {
private static final long serialVersionUID = -2990017519957561355L;
// subtype to filter for
private final Class<? extends T> subtype;
public SubtypeFilterFunction(final Class<? extends T> subtype) {
this.subtype = subtype;
}
@Override
public boolean filter(T value) throws Exception {
return subtype.isAssignableFrom(value.getClass());
}
}