public static List <Document> SearchLuceneIndex(BooleanQueryContract oQuery, string sIndexName)
{
List <Document> oQueryResults;
oQueryResults = new GenSearchService().ExecuteBooleanQuery(oQuery, sIndexName);
return(oQueryResults);
}
public void Reset()
{
//create a query that we will use to search for results
oQuery = new BooleanQueryContract();
oQuery.Clauses = new List <BooleanClauseContract>();
//we are dirty
bIsDirty = true;
}
public static List <Item> Search(BooleanQueryContract oQuery, string sIndexName, string fieldName)
{
List <Document> oDocumentFound;
List <Item> oItemsToReturn;
string sItemId;
Item oItem;
Lucene.Net.Documents.Field oIdField;
oItemsToReturn = new List <Item>();
oDocumentFound = SearchLuceneIndex(oQuery, sIndexName);
if (oDocumentFound != null)
{
foreach (Document oDoc in oDocumentFound)
{
oIdField = oDoc.GetField(fieldName);
if (oIdField != null)
{
sItemId = oIdField.StringValue;
if (!string.IsNullOrEmpty(sItemId))
{
oItem = ContextExtension.CurrentDatabase.GetItem(sItemId);
if (oItem != null)
{
oItemsToReturn.Add(oItem);
}
}
}
}
}
return(oItemsToReturn);
}
public List <Lucene.Net.Documents.Document> ExecuteBooleanQuery(BooleanQueryContract query, string indexName)
{
return(base.Channel.ExecuteBooleanQuery(query, indexName));
}
public List <Lucene.Net.Documents.Document> ExecuteBooleanQuery(BooleanQueryContract oQuery, string sIndexName)
{
#region VARIABLES
List <Lucene.Net.Documents.Document> oLuceneQueryResults;
Analyzer oAnalyzer;
MultiFieldQueryParser oQueryParser;
Query oLuceneQuery;
BooleanQuery oLuceneBooleanQuery;
#endregion
Sitecore.Diagnostics.Log.Info("GenSearchService - ExecuteBooleanQuery - Begins", this);
Sitecore.Diagnostics.Log.Info(string.Format("Executing query on Index {0}", sIndexName), this);
oLuceneQueryResults = null;
if (oQuery != null && oQuery.Clauses != null)
{
oLuceneBooleanQuery = new BooleanQuery();
/*
* An Analyzer builds TokenStreams to analyze the text.
* The analyzer represents a policy for extracting index terms from the text.
* A common implementation is to build a Tokenizer, which breaks the stream
* of characters from the Reader into raw Tokens.
* One or more TokenFilters may then be applied to the output of the Tokenizer.
* spurious (stop) words using English dictionary
*/
oAnalyzer = new StandardAnalyzer(LuceneVersion);
try
{
foreach (var oClause in oQuery.Clauses)
{
if (oClause.MultiFieldQuery != null && oClause.MultiFieldQuery.Fields != null && oClause.MultiFieldQuery.Fields.Length > 0 && !string.IsNullOrEmpty(oClause.MultiFieldQuery.SearchCriteria))
{
/*
* QueryParser obtains token stream using the Analizer and creates the Query
* baseing on internal rules.
* QueryParser need to know content field in index to be able to parse queries like
* "Search" or "Example". These queries will be transformed into
* [content_field]:Search and [content_field]:Example
*/
oQueryParser = new MultiFieldQueryParser(LuceneVersion, oClause.MultiFieldQuery.Fields, oAnalyzer);
/*
* In default mode (OR_OPERATOR) terms without any modifiers are considered optional:
* for example Test search is equal to Test OR search.
* In AND_OPERATOR mode terms are considered to be in conjuction: the above mentioned
* query is parsed as Test AND search
*/
oQueryParser.DefaultOperator = QueryParser.Operator.OR;
/*
* This method converts string query to object Query that can be used in searching
*/
oLuceneQuery = oQueryParser.Parse(oClause.MultiFieldQuery.SearchCriteria);
oLuceneBooleanQuery.Add(oLuceneQuery, ParseBooleanClauseOccur(oClause.Occur));
}
}
oLuceneQueryResults = ExecuteQuery(oLuceneBooleanQuery, sIndexName);
}
catch (Exception oSearchException)
{
Sitecore.Diagnostics.Log.Error("Error executing search request", oSearchException, typeof(GenSearchService));
}
}
if (oLuceneQueryResults == null)
{
Sitecore.Diagnostics.Log.Warn(string.Format(" Search on index {0} returned NULL", sIndexName), this);
}
else
{
Sitecore.Diagnostics.Log.Info(string.Format("Query executed result documents {0}", oLuceneQueryResults.Count), this);
}
Sitecore.Diagnostics.Log.Info("GenExternalSearchService - ExecuteBooleanQuery - Ends", this);
return(oLuceneQueryResults);
}