| /* |
| * 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.cassandra.db.partitions; |
| |
| import java.util.NoSuchElementException; |
| |
| import org.apache.cassandra.schema.TableMetadata; |
| import org.apache.cassandra.db.rows.UnfilteredRowIterator; |
| |
| public class SingletonUnfilteredPartitionIterator implements UnfilteredPartitionIterator |
| { |
| private final UnfilteredRowIterator iter; |
| private boolean returned; |
| |
| public SingletonUnfilteredPartitionIterator(UnfilteredRowIterator iter) |
| { |
| this.iter = iter; |
| } |
| |
| public TableMetadata metadata() |
| { |
| return iter.metadata(); |
| } |
| |
| public boolean hasNext() |
| { |
| return !returned; |
| } |
| |
| public UnfilteredRowIterator next() |
| { |
| if (returned) |
| throw new NoSuchElementException(); |
| |
| returned = true; |
| return iter; |
| } |
| |
| public void remove() |
| { |
| throw new UnsupportedOperationException(); |
| } |
| |
| public void close() |
| { |
| if (!returned) |
| iter.close(); |
| } |
| } |