+++ /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 org.apache.lucene.util.ToStringUtils;
-
-import java.io.IOException;
-
-/** Matches spans near the beginning of a field.
- * <p/>
- * This class is a simple extension of {@link SpanPositionRangeQuery} in that it assumes the
- * start to be zero and only checks the end boundary.
- *
- *
- * */
-public class SpanFirstQuery extends SpanPositionRangeQuery {
-
- /** Construct a SpanFirstQuery matching spans in <code>match</code> whose end
- * position is less than or equal to <code>end</code>. */
- public SpanFirstQuery(SpanQuery match, int end) {
- super(match, 0, end);
- }
-
- @Override
- protected AcceptStatus acceptPosition(Spans spans) throws IOException {
- assert spans.start() != spans.end();
- if (spans.start() >= end)
- return AcceptStatus.NO_AND_ADVANCE;
- else if (spans.end() <= end)
- return AcceptStatus.YES;
- else
- return AcceptStatus.NO;
- }
-
-
- @Override
- public String toString(String field) {
- StringBuilder buffer = new StringBuilder();
- buffer.append("spanFirst(");
- buffer.append(match.toString(field));
- buffer.append(", ");
- buffer.append(end);
- buffer.append(")");
- buffer.append(ToStringUtils.boost(getBoost()));
- return buffer.toString();
- }
-
- @Override
- public Object clone() {
- SpanFirstQuery spanFirstQuery = new SpanFirstQuery((SpanQuery) match.clone(), end);
- spanFirstQuery.setBoost(getBoost());
- return spanFirstQuery;
- }
-
- @Override
- public boolean equals(Object o) {
- if (this == o) return true;
- if (!(o instanceof SpanFirstQuery)) return false;
-
- SpanFirstQuery other = (SpanFirstQuery)o;
- return this.end == other.end
- && this.match.equals(other.match)
- && this.getBoost() == other.getBoost();
- }
-
- @Override
- public int hashCode() {
- int h = match.hashCode();
- h ^= (h << 8) | (h >>> 25); // reversible
- h ^= Float.floatToRawIntBits(getBoost()) ^ end;
- return h;
- }
-
-
-}