com.groupdocs.search.dictionaries

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• Search for different word forms
• Word forms provider

The following example demonstrates how to implement a custom word forms provider.

 
 public class SimpleWordFormsProvider implements IWordFormsProvider {
     public final String[] getWordForms(String word) {
         ArrayList<String> result = new ArrayList<String>();
         // Assume that the input word is in the plural, then we add the singular
         if (word.length() > 2 &&
             word.toLowerCase().endsWith("es")) {
             result.add(word.substring(0, word.length() - 2));
         }
         if (word.length() > 1 &&
             word.toLowerCase().endsWith("s")) {
             result.add(word.substring(0, word.length() - 1));
         }
         // Then assume that the input word is in the singular, we add the plural
         if (word.length() > 1 &&
             word.toLowerCase().endsWith("y")) {
             result.add(word.substring(0, word.length() - 1).concat("is"));
         }
         result.add(word.concat("s"));
         result.add(word.concat("es"));
         // All rules are implemented in the EnglishWordFormsProvider class
         return result.toArray(new String[0]);
     }
 }
 
 

The next example demonstrates how to set a custom word forms provider for using.

 
 String indexFolder = "c:\\MyIndex\\";
 String documentsFolder = "c:\\MyDocuments\\";
 // Creating an index in the specified folder
 Index index = new Index(indexFolder);
 // Indexing documents from the specified folder
 index.add(documentsFolder);
 // Setting the custom word forms provider instance
 index.getDictionaries().setWordFormsProvider(new SimpleWordFormsProvider());
 // Creating a search options instance
 SearchOptions options = new SearchOptions();
 options.setUseWordFormsSearch(true); // Enabling search for word forms
 // Searching in the index
 SearchResult result = index.search("relative", options);
 // The following words can be found:
 // relative
 // relatives