Package eu.europa.esig.dss.spi.client.http

Interface DataLoader

All Superinterfaces:
Serializable
All Known Implementing Classes:
CommonsDataLoader, FileCacheDataLoader, IgnoreDataLoader, MemoryDataLoader, NativeHTTPDataLoader, OCSPDataLoader, TimestampDataLoader
public interface DataLoader extends Serializable
Component that allows to retrieve the data using any protocol: HTTP, HTTPS, FTP, LDAP.

  • Nested Class Summary

    Nested Classes
    Modifier and Type
    Interface
    Description
    static class 
    DataLoader.DataAndUrl
    This is an internal class used to model the couple data and url used to obtain this data.

  • Method Summary

    Modifier and Type
    Method
    Description
    byte[]
    get(String url)
    Execute a HTTP GET operation.
    byte[]
    get(String url, boolean refresh)
    Deprecated.
    since 5.12.
    DataLoader.DataAndUrl
    get(List<String> urlStrings)
    Execute a HTTP GET operation.
    byte[]
    post(String url, byte[] content)
    Executes a HTTP POST operation
    void
    setContentType(String contentType)
    This allows to set the content type.

  • Method Details

    • get

      byte[] get(String url)
      Execute a HTTP GET operation.
      Parameters:
      url - the url to access
      Returns:
      byte array of obtained data or null

    • get

      DataLoader.DataAndUrl get(List<String> urlStrings)
      Execute a HTTP GET operation. This method is used when many URls are available to access the same resource. The operation stops after the first successful download.
      Parameters:
      urlStrings - List of Strings representing the URLs to be used in sequential way to obtain the data.
      Returns:
      DataAndUrl representing the array of obtained data and used url, or null

    • get

      @Deprecated byte[] get(String url, boolean refresh)
      Deprecated.
      since 5.12. To be removed in DSS 5.13. Use #get(url) for no cache, or an alternative DataLoader providing caching functionality.
      Execute a HTTP GET operation with indication concerning the mandatory nature of the operation.
      Parameters:
      url - to access
      refresh - if true indicates that the cached data should be refreshed
      Returns:
      byte array of obtained data or null

    • post

      byte[] post(String url, byte[] content)
      Executes a HTTP POST operation
      Parameters:
      url - to access
      content - the content to post
      Returns:
      byte array of obtained data

    • setContentType

      void setContentType(String contentType)
      This allows to set the content type. Example: Content-Type "application/ocsp-request"
      Parameters:
      contentType - to set the Content-Type