ExactPhraseScorerpublic final class ExactPhraseScorer extends PhraseScorer | Copyright 2004 The Apache Software Foundation
Licensed 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. |
| Methods Summary |
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| protected final float | phraseFreq()
// sort list with pq
for (PhrasePositions pp = first; pp != null; pp = pp.next) {
pp.firstPosition();
pq.put(pp); // build pq from list
}
pqToList(); // rebuild list from pq
int freq = 0;
do { // find position w/ all terms
while (first.position < last.position) { // scan forward in first
do {
if (!first.nextPosition())
return (float)freq;
} while (first.position < last.position);
firstToLast();
}
freq++; // all equal: a match
} while (last.nextPosition());
return (float)freq;
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