SrndPrefixQuerypublic class SrndPrefixQuery extends SimpleTerm | 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. |
| Fields Summary |
|---|
| private final String | prefix | | private final char | truncator |
| Constructors Summary |
|---|
public SrndPrefixQuery(String prefix, boolean quoted, char truncator)
super(quoted);
this.prefix = prefix;
this.truncator = truncator;
|
| Methods Summary |
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| public org.apache.lucene.index.Term | getLucenePrefixTerm(java.lang.String fieldName)
return new Term(fieldName, getPrefix());
| | public java.lang.String | getPrefix()return prefix;
| | public char | getSuffixOperator()return truncator;
| | protected void | suffixToString(java.lang.StringBuffer r)r.append(getSuffixOperator());
| | public java.lang.String | toStringUnquoted()return getPrefix();
| | public void | visitMatchingTerms(org.apache.lucene.index.IndexReader reader, java.lang.String fieldName, MatchingTermVisitor mtv)
/* inspired by PrefixQuery.rewrite(): */
TermEnum enumerator = reader.terms(getLucenePrefixTerm(fieldName));
boolean expanded = false;
try {
do {
Term term = enumerator.term();
if ((term != null)
&& term.text().startsWith(getPrefix())
&& term.field().equals(fieldName)) {
mtv.visitMatchingTerm(term);
expanded = true;
} else {
break;
}
} while (enumerator.next());
} finally {
enumerator.close();
}
if (! expanded) {
System.out.println("No terms in " + fieldName + " field for: " + toString());
}
|
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