com.hazelcast.org.apache.calcite.adapter.enumerable.MatchUtils 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 com.hazelcast.com.liance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.com.hazelcast.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.hazelcast.org.apache.calcite.adapter.enumerable;
import java.util.List;
/** Class with static Helpers for MATCH_RECOGNIZE. */
public class MatchUtils {
// Should not be instantiated
private MatchUtils() {
throw new IllegalStateException();
}
/**
* Returns the row with the highest index whose corresponding symbol matches, null otherwese.
* @param symbol Target Symbol
* @param rows List of passed rows
* @param symbols Corresponding symbols to rows
* @return index or -1
*/
public static int lastWithSymbol(String symbol, List rows, List symbols,
int startIndex) {
for (int i = startIndex; i >= 0; i--) {
if (symbol.equals(symbols.get(i))) {
return i;
}
}
return -1;
}
public static void print(int s) {
System.out.println(s);
}
}