+++ /dev/null
-package org.apache.lucene.util.fst;
-
-/**
- * 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 org.apache.lucene.store.DataInput;
-import org.apache.lucene.store.DataOutput;
-
-/**
- * Represents the outputs for an FST, providing the basic
- * algebra needed for the FST.
- *
- * @lucene.experimental
- */
-
-public abstract class Outputs<T> {
-
- // TODO: maybe change this API to allow for re-use of the
- // output instances -- this is an insane amount of garbage
- // (new object per byte/char/int) if eg used during
- // analysis
-
- /** Eg common("foo", "foobar") -> "foo" */
- public abstract T common(T output1, T output2);
-
- /** Eg subtract("foobar", "foo") -> "bar" */
- public abstract T subtract(T output, T inc);
-
- /** Eg add("foo", "bar") -> "foobar" */
- public abstract T add(T prefix, T output);
-
- public abstract void write(T output, DataOutput out) throws IOException;
-
- public abstract T read(DataInput in) throws IOException;
-
- /** NOTE: this output is compared with == so you must
- * ensure that all methods return the single object if
- * it's really no output */
- public abstract T getNoOutput();
-
- public abstract String outputToString(T output);
-
- public T merge(T first, T second) {
- throw new UnsupportedOperationException();
- }
-}