| /* |
| * 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.lucene.search.suggest; |
| |
| import java.util.Arrays; |
| import java.util.Iterator; |
| import java.util.Set; |
| |
| import org.apache.lucene.util.BytesRef; |
| import org.apache.lucene.util.BytesRefBuilder; |
| |
| /** |
| * A {@link InputIterator} over a sequence of {@link Input}s. |
| */ |
| public final class InputArrayIterator implements InputIterator { |
| private final Iterator<Input> i; |
| private final boolean hasPayloads; |
| private final boolean hasContexts; |
| private boolean first; |
| private Input current; |
| private final BytesRefBuilder spare = new BytesRefBuilder(); |
| |
| public InputArrayIterator(Iterator<Input> i) { |
| this.i = i; |
| if (i.hasNext()) { |
| current = i.next(); |
| first = true; |
| this.hasPayloads = current.hasPayloads; |
| this.hasContexts = current.hasContexts; |
| } else { |
| this.hasPayloads = false; |
| this.hasContexts = false; |
| } |
| } |
| |
| public InputArrayIterator(Input[] i) { |
| this(Arrays.asList(i)); |
| } |
| public InputArrayIterator(Iterable<Input> i) { |
| this(i.iterator()); |
| } |
| |
| @Override |
| public long weight() { |
| return current.v; |
| } |
| |
| @Override |
| public BytesRef next() { |
| if (i.hasNext() || (first && current!=null)) { |
| if (first) { |
| first = false; |
| } else { |
| current = i.next(); |
| } |
| spare.copyBytes(current.term); |
| return spare.get(); |
| } |
| return null; |
| } |
| |
| @Override |
| public BytesRef payload() { |
| return current.payload; |
| } |
| |
| @Override |
| public boolean hasPayloads() { |
| return hasPayloads; |
| } |
| |
| @Override |
| public Set<BytesRef> contexts() { |
| return current.contexts; |
| } |
| |
| @Override |
| public boolean hasContexts() { |
| return hasContexts; |
| } |
| } |