easy Information Extraction: is an easy-to-use information extraction framework that extracts data about companies from heterogeneous Web sources in a semi-automatic manner. It allows admin users to extract data about companies from heterogeneous Web sources in a semi-automatic manner by only defining a configuration file. The framework is quickly and simply generating Web Information Extractors and Wrappers. easIE offers a set of wrappers for obtaining content from Static and Dynamic HTML pages by pointing to the html elements using css Selectors.

Each extractor extends AbstractHTMLExtractor and implements the extractFields(List<ScrapableField> fields) and extractTable(String table_selector, List<ScrapableField> fields) methods. There are four objects that extend AbstractHTMLExtractor:

1. StaticHTMLExtractor is responsible for extracting content from static HTML pages:

      StaticHTMLExtractor extractor = new StaticHTMLExtractor(base_url, relative_url);
      extractor.extractFields(fields);
   

2. DynamicHTMLExtractor is responsible for executing a number of events to a dynamic HTML page and extracting the defined contents:

      DynamicHTMLExtractor extractor = new DynamicHTMLWrapper(base_url, relative_url, chrome_driver_path);
      extractor.browser_emulator.clickEvent(css_selector);
      extractor.extractFields(fields);
   

3. GroupHTMLExtractor is responsible for extracting content from a group of static HTML pages with similar structure:

      GroupHTMLExtractor extractor = new GroupHTMLExtractor(group_of_pages);
      extractor.extractFields(fields);
   

4. PaginationIterator is responsible for extracting data that are distributed in different pages:

      PaginationIterator extractor = new PaginationIterator(base_url, relative_url, next_page_selector);
      extractor.extractFields(fields);