/*
* Licensed to Crate under one or more contributor license agreements.
* See the NOTICE file distributed with this work for additional
* information regarding copyright ownership. Crate 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.
*
* However, if you have executed another commercial license agreement
* with Crate these terms will supersede the license and you may use the
* software solely pursuant to the terms of the relevant commercial
* agreement.
*/
package io.crate.data;
import java.util.Collections;
import java.util.Iterator;
public interface Bucket extends Iterable<Row> {
Bucket EMPTY = new Bucket() {
@Override
public Iterator<Row> iterator() {
return Collections.emptyIterator();
}
@Override
public int size() {
return 0;
}
@Override
public String toString() {
return "Empty Bucket";
}
};
/**
* Returns the number of rows in this bucket.
*
* @return the number of rows
*/
int size();
}