io.chatpal.solr.ext.handler

Class QueryHelper

java.lang.Object

io.chatpal.solr.ext.handler.QueryHelper

public class QueryHelper
extends Object

Method Summary

Modifier and Type	Method and Description
static String	buildOrFilter(String field, String[] values) Builds a query that requires one of the parsed terms by using a normal solr OR query.
static String	buildTermsQuery(String field, String[] values) Builds a query that requires one of the parsed terms by using the Solr terms query parser.
static String	cleanTextQuery(String s) Escapes Lucene query parser syntax not allowed in the ChatpalParams.PARAM_TEXT parameter Allowed are * for prefix/infix " for phrase queries - for negation and + for MUST white spaces are also not escaped

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

buildTermsQuery

public static String buildTermsQuery(String field,
                                     String[] values)

Builds a query that requires one of the parsed terms by using the Solr terms query parser.

Parameters:

field - the field. MUST NOT be null nor blank

values - the values

Returns:

the terms filter

Throws:

IllegalArgumentException - if null or blank is parsed as field

See Also:

https://lucene.apache.org/solr/guide/7_2/other-parsers.html#terms-query-parser

buildOrFilter

public static String buildOrFilter(String field,
                                   String[] values)

Builds a query that requires one of the parsed terms by using a normal solr OR query.

Parameters:

field - the field-name of the or query

values - the values to query for (OR)

Returns:

field-query-string, connected with the OR operator

cleanTextQuery

public static String cleanTextQuery(String s)

Escapes Lucene query parser syntax not allowed in the ChatpalParams.PARAM_TEXT parameter Allowed are

• * for prefix/infix
• " for phrase queries
• - for negation and + for MUST
• white spaces are also not escaped