| /* |
| * 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.uima.cas.impl; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.apache.uima.cas.FeatureStructure; |
| import org.apache.uima.jcas.tcas.Annotation; |
| |
| /** |
| * Implements a low level ambiguous or unambiguous iterator over some type T which doesn't need to |
| * be a subtype of Annotation. - This iterator skips types which are not Annotation or a subtype of |
| * Annotation. |
| * |
| * @param <T> |
| * the type this iterator is over (including subtypes) |
| */ |
| public class LLUnambiguousIteratorImpl<T extends FeatureStructure> |
| extends FsIterator_subtypes_snapshot<T> { |
| |
| public LLUnambiguousIteratorImpl(LowLevelIterator<T> it) { |
| super((T[]) createItemsArray((LowLevelIterator<FeatureStructure>) it), |
| (LowLevelIndex<T>) it.ll_getIndex(), IS_ORDERED, it.getComparator()); |
| } |
| |
| // this is static because can't have instance method call before super call in constructor |
| private static Annotation[] createItemsArray(LowLevelIterator<FeatureStructure> it) { |
| List<Annotation> items = new ArrayList<>(); |
| int lastSeenEnd = 0; |
| it.moveToFirst(); |
| // Iterate over the input iterator. |
| while (it.isValid()) { |
| FeatureStructure fs = it.nextNvc(); |
| if (!(fs instanceof Annotation)) { |
| continue; // skip until get an annotation |
| } |
| |
| Annotation annot = (Annotation) fs; |
| if (annot.getBegin() >= lastSeenEnd) { |
| items.add(annot); |
| lastSeenEnd = annot.getEnd(); |
| } |
| } |
| |
| return items.toArray(new Annotation[items.size()]); |
| } |
| |
| } |