Search and index documents and images in .NET and Java

PM> Install-Package GroupDocs.Search 

<repository>
<id>GroupDocsJavaAPI</id>
<name>GroupDocs Java API</name>
<url>http://repository.groupdocs.com/repo/</url>
</repository>
<dependency>
<groupId>com.groupdocs</groupId>
<artifactId>groupdocs-search</artifactId>
<version>21.3</version>
</dependency>
   

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);
 
// Search with a text query
SearchResult result1 = index.Search("theory AND relativity");
 
// Search with object query
SearchQuery wordQuery1 = SearchQuery.CreateWordQuery("theory");
SearchQuery wordQuery2 = SearchQuery.CreateWordQuery("relativity");
SearchQuery andQuery = SearchQuery.CreateAndQuery(wordQuery1, wordQuery2);
SearchResult result2 = index.Search(andQuery); 

    string indexFolder = @"c:\MyIndex\";
    string documentsFolder = @"c:\MyDocuments\";
    string query = "Einstein";
     
    // Creating an index in the specified folder
    Index index = new Index(indexFolder);
     
    // Indexing documents from the specified folder
    index.Add(documentsFolder);
     
    SearchOptions options = new SearchOptions();
    options.FuzzySearch.Enabled = true; // Enabling the fuzzy search
    options.FuzzySearch.FuzzyAlgorithm = new SimilarityLevel(0.8); // Creating the fuzzy search algorithm
    // This function specifies 0 as the maximum number of mistakes for words from 1 to 4 characters.
    // It specifies 1 as the maximum number of mistakes for words from 5 to 9 characters.
    // It specifies 2 as the maximum number of mistakes for words from 10 to 14 characters. And so on.
     
    // Search in index
    SearchResult result = index.Search(query, options);    

    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);
 
// Search for the phrase in text form
string query1 = "^^(.)\\1{1,}"; // The first caret character at the beginning indicates that this is a regular expression search query
SearchResult result1 = index.Search(query1); // Search for two or more identical characters at the beginning of a word
 
// Search for the phrase in object form
SearchQuery query2 = SearchQuery.CreateRegexQuery("^(.)\\1{1,}"); // Search for two or more identical characters at the beginning of a word
SearchResult result2 = index.Search(query2);
      

        string indexFolder = @"c:\MyIndex";
string documentFolder = @"c:\MyDocuments";

// Creating an index
Index index = new Index(indexFolder);
// Setting the image indexing options
IndexingOptions indexingOptions = new IndexingOptions();
indexingOptions.ImageIndexingOptions.EnabledForContainerItemImages = true;
indexingOptions.ImageIndexingOptions.EnabledForEmbeddedImages = true;
indexingOptions.ImageIndexingOptions.EnabledForSeparateImages = true;

// Indexing documents in a document folder
index.Add(documentFolder, indexingOptions);

// Setting the image search options
ImageSearchOptions imageSearchOptions = new ImageSearchOptions();
imageSearchOptions.HashDifferences = 10;
imageSearchOptions.MaxResultCount = 100;
imageSearchOptions.SearchDocumentFilter = SearchDocumentFilter.CreateFileExtension(".zip", ".png", ".jpg");

// Creating a reference image for search
SearchImage searchImage = SearchImage.Create(@"c:\MyDocuments\image.png");

// Searching in the index
ImageSearchResult result = index.Search(searchImage, imageSearchOptions);

Console.WriteLine("Images found: " + result.ImageCount);
for (int i = 0; i < result.ImageCount; i++)
{
    FoundImageFrame image = result.GetFoundImage(i);
    Console.WriteLine(image.DocumentInfo.ToString());
}
  

        String indexFolder = "c:\\MyIndex";
        String documentsFolder = "c:\\MyDocuments";
        
        // Creating an index
        Index index = new Index(indexFolder);
        
        // Setting the image indexing options
        IndexingOptions indexingOptions = new IndexingOptions();
        indexingOptions.getImageIndexingOptions().setEnabledForContainerItemImages(true);
        indexingOptions.getImageIndexingOptions().setEnabledForEmbeddedImages(true);
        indexingOptions.getImageIndexingOptions().setEnabledForSeparateImages(true);
        
        // Indexing documents in a document folder
        index.add(documentsFolder, indexingOptions);
        
        // Setting the image search options
        ImageSearchOptions imageSearchOptions = new ImageSearchOptions();
        imageSearchOptions.setHashDifferences(10);
        imageSearchOptions.setMaxResultCount(10000);
        imageSearchOptions.setSearchDocumentFilter(SearchDocumentFilter.createFileExtension(".zip", ".png", ".jpg"));
        
        // Creating a reference image for search
        SearchImage searchImage = SearchImage.create("c:\\MyDocuments\\image.png");
        
        // Searching in the index
        ImageSearchResult result = index.search(searchImage, imageSearchOptions);
        
        System.out.print("Images found: " + result.getImageCount());
        for (int i = 0; i < result.getImageCount(); i++) {
            FoundImageFrame image = result.getFoundImage(i);
            System.out.print(image.getDocumentInfo().toString());
        } 

string indexFolder = @"c:\MyIndex\";
string documentsFolder = @"c:\MyDocuments\";
 
// Creating an index
Index index = new Index(indexFolder);
 
// Adding document passwords to the dictionary
string key = Path.GetFullPath(@"C:\MyDocuments\ProtectedDocument.pdf");
index.Dictionaries.DocumentPasswords.Add(key, "123456");
// ...
 
// Indexing documents from the specified folder
// Passwords will be automatically retrieved from the dictionary when necessary
index.Add(documentsFolder);

String indexFolder = "c:\\MyIndex\\";
String documentsFolder = "c:\\MyDocuments\\";
 
// Creating an index
Index index = new Index(indexFolder);
 
// Adding document passwords to the dictionary
String path = new File("C:\\MyDocuments\\ProtectedDocument.pdf").getAbsolutePath();
index.getDictionaries().getDocumentPasswords().add(path, "123456");
// ...
 
// Indexing documents from the specified folder
// Passwords will be automatically retrieved from the dictionary when necessary
index.add(documentsFolder);