--- /dev/null
+package org.apache.lucene.search.spans;
+
+/**
+ * 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.
+ */
+
+import java.io.IOException;
+import java.util.Collection;
+
+import org.apache.lucene.index.IndexReader;
+import org.apache.lucene.search.Weight;
+import org.apache.lucene.search.Similarity;
+
+/**
+ * Holds all implementations of classes in the o.a.l.s.spans package as a
+ * back-compatibility test. It does not run any tests per-se, however if
+ * someone adds a method to an interface or abstract method to an abstract
+ * class, one of the implementations here will fail to compile and so we know
+ * back-compat policy was violated.
+ */
+final class JustCompileSearchSpans {
+
+ private static final String UNSUPPORTED_MSG = "unsupported: used for back-compat testing only !";
+
+ static final class JustCompileSpans extends Spans {
+
+ @Override
+ public int doc() {
+ throw new UnsupportedOperationException(UNSUPPORTED_MSG);
+ }
+
+ @Override
+ public int end() {
+ throw new UnsupportedOperationException(UNSUPPORTED_MSG);
+ }
+
+ @Override
+ public boolean next() throws IOException {
+ throw new UnsupportedOperationException(UNSUPPORTED_MSG);
+ }
+
+ @Override
+ public boolean skipTo(int target) throws IOException {
+ throw new UnsupportedOperationException(UNSUPPORTED_MSG);
+ }
+
+ @Override
+ public int start() {
+ throw new UnsupportedOperationException(UNSUPPORTED_MSG);
+ }
+
+ @Override
+ public Collection<byte[]> getPayload() throws IOException {
+ throw new UnsupportedOperationException(UNSUPPORTED_MSG);
+ }
+
+ @Override
+ public boolean isPayloadAvailable() {
+ throw new UnsupportedOperationException(UNSUPPORTED_MSG);
+ }
+
+ }
+
+ static final class JustCompileSpanQuery extends SpanQuery {
+
+ @Override
+ public String getField() {
+ throw new UnsupportedOperationException(UNSUPPORTED_MSG);
+ }
+
+ @Override
+ public Spans getSpans(IndexReader reader) throws IOException {
+ throw new UnsupportedOperationException(UNSUPPORTED_MSG);
+ }
+
+ @Override
+ public String toString(String field) {
+ throw new UnsupportedOperationException(UNSUPPORTED_MSG);
+ }
+
+ }
+
+ static final class JustCompilePayloadSpans extends Spans {
+
+ @Override
+ public Collection<byte[]> getPayload() throws IOException {
+ throw new UnsupportedOperationException(UNSUPPORTED_MSG);
+ }
+
+ @Override
+ public boolean isPayloadAvailable() {
+ throw new UnsupportedOperationException(UNSUPPORTED_MSG);
+ }
+
+ @Override
+ public int doc() {
+ throw new UnsupportedOperationException(UNSUPPORTED_MSG);
+ }
+
+ @Override
+ public int end() {
+ throw new UnsupportedOperationException(UNSUPPORTED_MSG);
+ }
+
+ @Override
+ public boolean next() throws IOException {
+ throw new UnsupportedOperationException(UNSUPPORTED_MSG);
+ }
+
+ @Override
+ public boolean skipTo(int target) throws IOException {
+ throw new UnsupportedOperationException(UNSUPPORTED_MSG);
+ }
+
+ @Override
+ public int start() {
+ throw new UnsupportedOperationException(UNSUPPORTED_MSG);
+ }
+
+ }
+
+ static final class JustCompileSpanScorer extends SpanScorer {
+
+ protected JustCompileSpanScorer(Spans spans, Weight weight,
+ Similarity similarity, byte[] norms) throws IOException {
+ super(spans, weight, similarity, norms);
+ }
+
+ @Override
+ protected boolean setFreqCurrentDoc() throws IOException {
+ throw new UnsupportedOperationException(UNSUPPORTED_MSG);
+ }
+ }
+}