LowerCaseFilter

Converts all tokens to lowercase.

Import

import LowerCaseFilter from 'dynamosearch/filters/LowerCaseFilter';

Constructor

new LowerCaseFilter()

No parameters required.

Example

const filter = new LowerCaseFilter();
const tokens = filter.apply([
  { token: 'Hello', startOffset: 0, endOffset: 5, position: 0 },
  { token: 'WORLD', startOffset: 6, endOffset: 11, position: 1 },
  { token: 'JavaScript', startOffset: 12, endOffset: 22, position: 2 },
]);
// [
//   { token: 'hello', startOffset: 0, endOffset: 5, position: 0 },
//   { token: 'world', startOffset: 6, endOffset: 11, position: 1 },
//   { token: 'javascript', startOffset: 12, endOffset: 22, position: 2 }
// ]

Best For

• Case-insensitive search
• Normalizing English text
• Most text search applications

See Also

• UpperCaseFilter - For uppercase conversion
• StandardAnalyzer - Uses this filter