org.apache.inlong.sort.base.filter.RowKindValidator Maven / Gradle / Ivy
/*
* 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.inlong.sort.base.filter;
import static org.apache.inlong.sort.base.Constants.DELIMITER;
import java.util.Arrays;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.regex.Pattern;
import org.apache.flink.types.RowKind;
import org.apache.flink.util.Preconditions;
/**
* row kind validator, only specified row kinds can be valid
* supported row kinds are
*
* "+I" represents INSERT.
* "-U" represents UPDATE_BEFORE.
* "+U" represents UPDATE_AFTER.
* "-D" represents DELETE.
*
*/
public class RowKindValidator implements RowValidator {
private final Set rowKindsFiltered = new HashSet<>();
private static final String pattern = "(\\+I|\\+U|-U|-D)(&(\\+I|\\+U|-U|-D))*";
public RowKindValidator(List rowKinds) {
Preconditions.checkArgument(!rowKinds.isEmpty(),
"rowKinds should not be empty");
for (String rowKind : rowKinds) {
Arrays.stream(RowKind.values()).filter(value -> value.shortString().equals(rowKind))
.findFirst().ifPresent(rowKindsFiltered::add);
}
}
public RowKindValidator(String rowKinds) {
Preconditions.checkArgument(Pattern.matches(pattern, rowKinds),
String.format("rowKinds is not valid, should match the pattern %s,"
+ " the input value is %s", pattern, rowKinds));
for (String rowKind : rowKinds.split(DELIMITER)) {
Arrays.stream(RowKind.values()).filter(value -> value.shortString().equals(rowKind))
.findFirst().ifPresent(rowKindsFiltered::add);
}
}
@Override
public boolean validate(RowKind rowKind) {
return rowKindsFiltered.contains(rowKind);
}
}