Example usage of the Lucene Interval Fields project.

lucene-interval-fields-example.java

// Add some documents.

Document doc = new Document();
doc.add(new Field("name", "George Washington", Field.Store.YES, Field.Index.NO));
doc.add(new NumericIntervalField("term", true, 1789, 1793));
doc.add(new NumericIntervalField("term", true, 1793, 1797));
indexWriter.addDocument(doc);

doc = new Document();
doc.add(new Field("name", "John Adams", Field.Store.YES, Field.Index.NO));
doc.add(new NumericIntervalField("term", true, 1797, 1801));
indexWriter.addDocument(doc);

doc = new Document();
doc.add(new Field("name", "Thomas Jefferson", Field.Store.YES, Field.Index.NO));
doc.add(new NumericIntervalField("term", true, 1801, 1805));
doc.add(new NumericIntervalField("term", true, 1805, 1809));
indexWriter.addDocument(doc);

// ...

// List all presidents in office in the 1700s.
searcher.search(new NumericIntervalIntersectionQuery("term", 1700, 1799), collector)

// Who was president in 1804?
searcher.search(new InNumericIntervalQuery("term", 1804), collector)