Hi,
You can use Boolean query for the same.
Boolean query is meant for having a series of queries with boolean operators
defined.
For eg.
lets say you have 3 diff queries A, B, C and you want a final query which
behaves as A && (B || C)
BooleanQuery query = new BooleanQuery();
BooleanQuery temp = new BooleanQuery();
temp.add(B, Occur.SHOULD); //Occur.SHOULD is equvalent to OR operator
temp.add(C, Occur.SHOULD);
query.add(A, Occur.MUST); //Occur.MUST is equivalent to an AND operator
query.add(temp, Occur.Must);
Now "query" = A && (B || C)
Go through lucene documentation about Boolean query
Hope it helps.
Prabin
On Wed, Nov 12, 2008 at 8:56 AM, Santosh Urs <[EMAIL PROTECTED]> wrote:
>
> How can i use multiple Boolean operators in a search query.?
>
> For example , from the search text field , i usually get the queries which
> looks like
>
> Any (word or phrase) and ( a list of URI's)
> example:: rice land http\://www.wtr.org/wordlist#c_2379
> http\://www.wtr.org/wordlist#c_65748 http\://www.wtr.org/wordlist#c_7612
> here the search term or phrase is = rice land
> URIs are= http\://www.wtr.org/wordlist#c_2379
> http\://www.wtr.org/wordlist#c_65748 http\://www.wtr.org/wordlist#c_7612
>
> Now the way i want to build the Query is::
>
> rice land AND ( http\://www.wtr.org/wordlist#c_2379 OR
> http\://www.wtr.org/wordlist#c_65748 OR http\://
> www.wtr.org/wordlist#c_7612
> )
>
> i tried this-
>
> try {
> if (queryString != null && fields != null) {
> PerFieldAnalyzerWrapper perFieldAnalyzer =
> new
> PerFieldAnalyzerWrapper(analyzer);
> perFieldAnalyzer.addAnalyzer("conceptURI", new
> KeywordAnalyzer());
>
> MultiFieldQueryParser mfqp = new MultiFieldQueryParser(
> fields, perFieldAnalyzer);
> if (queryString.contains("http") && !queryString.startsWith("http")) {
>
> String orgQuery =queryString.substring(0, queryString.indexOf("http"));
> String
> uri=queryString.substring(queryString.indexOf("http"),
> queryString.length());
>
> uri = uri.trim();
> String[] uris = uri.split(" ");
> String tempUri="";
> for (int i = 0; i < uris.length;
> i++) {
> if(i== uris.length-1){
> tempUri = tempUri +
> uris[i];
> }else {
> tempUri = tempUri +
> uris[i]+QueryParser.OR_OPERATOR;
> }
> }
>
> query = mfqp.parse(orgQuery+ QueryParser.AND_OPERATOR+ tempUri );
>
>
>
> is this is the correct way to form a Query..?? Are there any other
> methods?
>
> --
> View this message in context:
> http://www.nabble.com/Grouping-of-Boolean-opeartors-in-Lucene..--tp20453434p20453434.html
> Sent from the Lucene - Java Users mailing list archive at Nabble.com.
>
>
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