| /* |
| * 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.ignite.internal.processors.query.h2.dml; |
| |
| import org.apache.ignite.internal.processors.query.EnlistOperation; |
| import org.apache.ignite.internal.processors.query.UpdateSourceIterator; |
| |
| /** */ |
| public class DmlUpdateSingleEntryIterator<T> implements UpdateSourceIterator<T> { |
| /** */ |
| private static final long serialVersionUID = 0L; |
| |
| /** */ |
| private final EnlistOperation op; |
| |
| /** */ |
| private final T entry; |
| |
| /** */ |
| private boolean first = true; |
| |
| /** |
| * Constructor. |
| * |
| * @param op Operation. |
| * @param entry Entry. |
| */ |
| public DmlUpdateSingleEntryIterator(EnlistOperation op, T entry) { |
| this.op = op; |
| this.entry = entry; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public EnlistOperation operation() { |
| return op; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public boolean hasNextX() { |
| return first; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public T nextX() { |
| T res = first ? entry : null; |
| |
| first = false; |
| |
| return res; |
| } |
| } |