FileDocCategorySizeDatePackage
BooleanFilterTest.javaAPI DocApache Lucene 2.2.07496Sat Jun 16 22:21:10 BST 2007org.apache.lucene.search

BooleanFilterTest

public class BooleanFilterTest extends TestCase
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Fields Summary
private RAMDirectory
directory
private IndexReader
reader
Constructors Summary
Methods Summary
private voidaddDoc(org.apache.lucene.index.IndexWriter writer, java.lang.String accessRights, java.lang.String price, java.lang.String date, java.lang.String inStock)

		Document doc=new Document();
		doc.add(new Field("accessRights",accessRights,Field.Store.YES,Field.Index.TOKENIZED));
		doc.add(new Field("price",price,Field.Store.YES,Field.Index.TOKENIZED));
		doc.add(new Field("date",date,Field.Store.YES,Field.Index.TOKENIZED));
		doc.add(new Field("inStock",inStock,Field.Store.YES,Field.Index.TOKENIZED));
		writer.addDocument(doc);
private org.apache.lucene.search.FiltergetRangeFilter(java.lang.String field, java.lang.String lowerPrice, java.lang.String upperPrice)

		return new RangeFilter(field,lowerPrice,upperPrice,true,true);
private TermsFiltergetTermsFilter(java.lang.String field, java.lang.String text)

		TermsFilter tf=new TermsFilter();
		tf.addTerm(new Term(field,text));
		return tf;
protected voidsetUp()

		directory = new RAMDirectory();
		IndexWriter writer = new IndexWriter(directory, new WhitespaceAnalyzer(), true);
		
		//Add series of docs with filterable fields : acces rights, prices, dates and "in-stock" flags
		addDoc(writer, "admin guest", "010", "20040101","Y");
		addDoc(writer, "guest", "020", "20040101","Y");
		addDoc(writer, "guest", "020", "20050101","Y");
		addDoc(writer, "admin", "020", "20050101","Maybe");
		addDoc(writer, "admin guest", "030", "20050101","N");
		
		writer.close();
		reader=IndexReader.open(directory);
public voidtestJustMust()

		BooleanFilter booleanFilter = new BooleanFilter();
		booleanFilter.add(new FilterClause(getTermsFilter("accessRights", "admin"),BooleanClause.Occur.MUST));
		BitSet bits = booleanFilter.bits(reader);
		assertEquals("MUST",3,bits.cardinality());
public voidtestJustMustNot()

		BooleanFilter booleanFilter = new BooleanFilter();
		booleanFilter.add(new FilterClause(getTermsFilter("inStock","N"),BooleanClause.Occur.MUST_NOT));
		BitSet bits = booleanFilter.bits(reader);
		assertEquals("MUST_NOT",4,bits.cardinality());
public voidtestMustAndMustNot()

		BooleanFilter booleanFilter = new BooleanFilter();
		booleanFilter.add(new FilterClause(getTermsFilter("inStock","N"),BooleanClause.Occur.MUST));
		booleanFilter.add(new FilterClause(getTermsFilter("price","030"),BooleanClause.Occur.MUST_NOT));
		BitSet bits = booleanFilter.bits(reader);
		assertEquals("MUST_NOT wins over MUST for same docs",0,bits.cardinality());
public voidtestShould()

		BooleanFilter booleanFilter = new BooleanFilter();
		booleanFilter.add(new FilterClause(getTermsFilter("price","030"),BooleanClause.Occur.SHOULD));
		BitSet bits = booleanFilter.bits(reader);
		assertEquals("Should retrieves only 1 doc",1,bits.cardinality());
public voidtestShoulds()

		BooleanFilter booleanFilter = new BooleanFilter();
		booleanFilter.add(new FilterClause(getRangeFilter("price","010", "020"),BooleanClause.Occur.SHOULD));
		booleanFilter.add(new FilterClause(getRangeFilter("price","020", "030"),BooleanClause.Occur.SHOULD));
		BitSet bits = booleanFilter.bits(reader);
		assertEquals("Shoulds are Ored together",5,bits.cardinality());
public voidtestShouldsAndMust()

		BooleanFilter booleanFilter = new BooleanFilter();
		booleanFilter.add(new FilterClause(getRangeFilter("price","010", "020"),BooleanClause.Occur.SHOULD));
		booleanFilter.add(new FilterClause(getRangeFilter("price","020", "030"),BooleanClause.Occur.SHOULD));
		booleanFilter.add(new FilterClause(getTermsFilter("accessRights", "admin"),BooleanClause.Occur.MUST));
		BitSet bits = booleanFilter.bits(reader);
		assertEquals("Shoulds Ored but MUST",3,bits.cardinality());
public voidtestShouldsAndMustNot()

		BooleanFilter booleanFilter = new BooleanFilter();
		booleanFilter.add(new FilterClause(getRangeFilter("price","010", "020"),BooleanClause.Occur.SHOULD));
		booleanFilter.add(new FilterClause(getRangeFilter("price","020", "030"),BooleanClause.Occur.SHOULD));
		booleanFilter.add(new FilterClause(getTermsFilter("inStock", "N"),BooleanClause.Occur.MUST_NOT));
		BitSet bits = booleanFilter.bits(reader);
		assertEquals("Shoulds Ored but AndNot",4,bits.cardinality());

		booleanFilter.add(new FilterClause(getTermsFilter("inStock", "Maybe"),BooleanClause.Occur.MUST_NOT));
		bits = booleanFilter.bits(reader);
		assertEquals("Shoulds Ored but AndNots",3,bits.cardinality());
public voidtestShouldsAndMusts()

		BooleanFilter booleanFilter = new BooleanFilter();
		booleanFilter.add(new FilterClause(getRangeFilter("price","010", "020"),BooleanClause.Occur.SHOULD));
		booleanFilter.add(new FilterClause(getRangeFilter("price","020", "030"),BooleanClause.Occur.SHOULD));
		booleanFilter.add(new FilterClause(getTermsFilter("accessRights", "admin"),BooleanClause.Occur.MUST));
		booleanFilter.add(new FilterClause(getRangeFilter("date","20040101", "20041231"),BooleanClause.Occur.MUST));
		BitSet bits = booleanFilter.bits(reader);
		assertEquals("Shoulds Ored but MUSTs ANDED",1,bits.cardinality());
public voidtestShouldsAndMustsAndMustNot()

		BooleanFilter booleanFilter = new BooleanFilter();
		booleanFilter.add(new FilterClause(getRangeFilter("price","030", "040"),BooleanClause.Occur.SHOULD));
		booleanFilter.add(new FilterClause(getTermsFilter("accessRights", "admin"),BooleanClause.Occur.MUST));
		booleanFilter.add(new FilterClause(getRangeFilter("date","20050101", "20051231"),BooleanClause.Occur.MUST));
		booleanFilter.add(new FilterClause(getTermsFilter("inStock","N"),BooleanClause.Occur.MUST_NOT));
		BitSet bits = booleanFilter.bits(reader);
		assertEquals("Shoulds Ored but MUSTs ANDED and MustNot",0,bits.cardinality());