org.apache.maven.index

Class DefaultQueryCreator

java.lang.Object

org.apache.maven.index.DefaultQueryCreator

All Implemented Interfaces:

QueryCreator

@Singleton
 @Named
public class DefaultQueryCreator
extends Object
implements QueryCreator

A default QueryCreator constructs Lucene query for provided query text.

By default wildcards are created such as query text matches beginning of the field value or beginning of the class/package name segment for NAMES field. But it can be controlled by using special markers:

• * - any character
• '^' - beginning of the text
• '$' or '<' or ' ' end of the text

For example:

• junit - matches junit and junit-foo, but not foo-junit
• *junit - matches junit, junit-foo and foo-junit
• ^junit$ - matches junit, but not junit-foo, nor foo-junit

Author:

Eugene Kuleshov

Field Summary

Fields inherited from interface org.apache.maven.index.QueryCreator

ROLE

Constructor Summary

Constructors

Constructor and Description
DefaultQueryCreator()

Method Summary

Modifier and Type	Method and Description
org.apache.lucene.search.Query	constructQuery(Field field, IndexerField indexerField, String query, SearchType type)
org.apache.lucene.search.Query	constructQuery(Field field, SearchExpression expression) Constructs query by parsing the query string, using field as default field.
org.apache.lucene.search.Query	constructQuery(Field field, String query, SearchType type) Constructs query by parsing the query string, using field as default field.
org.apache.lucene.search.Query	constructQuery(String field, String query) Deprecated.
protected int	countTerms(IndexerField indexerField, String query)
protected org.slf4j.Logger	getLogger()
org.apache.lucene.search.Query	legacyConstructQuery(String field, String query)
IndexerField	selectIndexerField(Field field, SearchType type) Performs a selection of the appropriate IndexerField belonging to proper Field.

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultQueryCreator

public DefaultQueryCreator()

Method Detail

getLogger

protected org.slf4j.Logger getLogger()

selectIndexerField

public IndexerField selectIndexerField(Field field,
                                       SearchType type)

Description copied from interface: QueryCreator

Performs a selection of the appropriate IndexerField belonging to proper Field.

Specified by:

selectIndexerField in interface QueryCreator

Returns:

constructQuery

public org.apache.lucene.search.Query constructQuery(Field field,
                                                     SearchExpression expression)
                                              throws org.apache.lucene.queryparser.classic.ParseException

Description copied from interface: QueryCreator

Constructs query by parsing the query string, using field as default field. This method should be use to construct queries (single term or phrase queries) against single field.

Specified by:

constructQuery in interface QueryCreator

Returns:

Throws:

org.apache.lucene.queryparser.classic.ParseException - if query parsing is unsuccessful.

constructQuery

public org.apache.lucene.search.Query constructQuery(Field field,
                                                     String query,
                                                     SearchType type)
                                              throws org.apache.lucene.queryparser.classic.ParseException

Description copied from interface: QueryCreator

Constructs query by parsing the query string, using field as default field. This method should be use to construct queries (single term or phrase queries) against single field.

Specified by:

constructQuery in interface QueryCreator

Returns:

Throws:

org.apache.lucene.queryparser.classic.ParseException - if query parsing is unsuccessful.

constructQuery

@Deprecated
public org.apache.lucene.search.Query constructQuery(String field,
                                                                  String query)

Deprecated.

Description copied from interface: QueryCreator

Deprecated. Avoid it's use! Constructs query against single field, using it's "best effort" approach to perform parsing, but letting caller to apply it's (usually wrong) knowledge about how field is indexed.

Specified by:

constructQuery in interface QueryCreator

Returns:

query if successfully parsed, or null.

constructQuery

public org.apache.lucene.search.Query constructQuery(Field field,
                                                     IndexerField indexerField,
                                                     String query,
                                                     SearchType type)
                                              throws org.apache.lucene.queryparser.classic.ParseException

Throws:

org.apache.lucene.queryparser.classic.ParseException

legacyConstructQuery

public org.apache.lucene.search.Query legacyConstructQuery(String field,
                                                           String query)

countTerms

protected int countTerms(IndexerField indexerField,
                         String query)