org.activemath.omdocjdom.index.queries
Class AbstractAMIndexQuery

java.lang.Object
  org.activemath.omdocjdom.index.queries.AbstractAMIndexQuery

All Implemented Interfaces:

IndexConstants

Direct Known Subclasses:

AMIndexQueryList, IdAMIndexQuery, ItemTypeQuery, MDAttributeAMIndexQuery, PhraseAMIndexQuery, PlainTextAMIndexQuery

public abstract class AbstractAMIndexQuery
extends Object
implements IndexConstants

Field Summary

protected static boolean	DEBUG
protected static org.apache.commons.logging.Log	log

Fields inherited from interface org.activemath.omdocjdom.index.IndexConstants

FIELDNAME_id, FIELDNAME_metadata, FIELDNAME_type, LANG_ALL, LANG_UNIVERSAL, SUBFIELDNAME_field, SUBFIELDNAME_learningContext

Constructor Summary

AbstractAMIndexQuery(List languages)

Method Summary

org.apache.lucene.search.Query	asLuceneQuery()
protected abstract org.apache.lucene.search.Query	createQueryForVariation(String field, String lang) Creates a query for this field and language.
void	feedVariationAlongLanguages(float startBoost, org.apache.lucene.search.BooleanQuery bQ, org.apache.lucene.search.BooleanClause.Occur occurenceReq) Calls createQueryForVariation(String, String) for each field and language where a text can occur decreasing progessively the boosting.
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

log

protected static final org.apache.commons.logging.Log log

DEBUG

protected static final boolean DEBUG

Constructor Detail

AbstractAMIndexQuery

public AbstractAMIndexQuery(List languages)

Method Detail

asLuceneQuery

public org.apache.lucene.search.Query asLuceneQuery()

feedVariationAlongLanguages

public void feedVariationAlongLanguages(float startBoost,
                                        org.apache.lucene.search.BooleanQuery bQ,
                                        org.apache.lucene.search.BooleanClause.Occur occurenceReq)

Calls createQueryForVariation(String, String) for each field and language where a text can occur decreasing progessively the boosting. The first round is the list of titles, successively in each language, the second orund is the list of texts, successively in each language.

Parameters:

startBoost - the first boost factor, that for the match for the title in the first language, that will decrease progressively

bQ - the query to be fed with the variations

occurenceReq - the requirement to occur

createQueryForVariation

protected abstract org.apache.lucene.search.Query createQueryForVariation(String field,
                                                                          String lang)

Creates a query for this field and language.

Parameters:

field - the field name this should apply to

lang - the language (added to the field name if non-null)

Returns:

the query that will be composed with others with varying fields and languages

toString

public String toString()

Overrides:

toString in class Object