Package jakarta.activation

Class URLDataSource

java.lang.Object
jakarta.activation.URLDataSource
All Implemented Interfaces:
DataSource
public class URLDataSource extends Object implements DataSource
The URLDataSource class provides an object that wraps a URL object in a DataSource interface. URLDataSource simplifies the handling of data described by URLs within Jakarta Activation because this class can be used to create new DataHandlers. NOTE: The DataHandler object creates a URLDataSource internally, when it is constructed with a URL.
See Also:

  • Constructor Details

    • URLDataSource

      public URLDataSource(URL url)
      URLDataSource constructor. The URLDataSource class will not open a connection to the URL until a method requiring it to do so is called.
      Parameters:
      url - The URL to be encapsulated in this object.

  • Method Details

    • getContentType

      public String getContentType()
      Returns the value of the URL content-type header field. It calls the URL's URLConnection.getContentType method after retrieving a URLConnection object. Note: this method attempts to call the openConnection method on the URL. If this method fails, or if a content type is not returned from the URLConnection, getContentType returns "application/octet-stream" as the content type.
      Specified by:
      getContentType in interface DataSource
      Returns:
      the content type.

    • getName

      public String getName()
      Calls the getFile method on the URL used to instantiate the object.
      Specified by:
      getName in interface DataSource
      Returns:
      the result of calling the URL's getFile method.

    • getInputStream

      public InputStream getInputStream() throws IOException
      The getInputStream method from the URL. Calls the openStream method on the URL.
      Specified by:
      getInputStream in interface DataSource
      Returns:
      the InputStream.
      Throws:
      IOException - for failures creating the InputStream

    • getOutputStream

      public OutputStream getOutputStream() throws IOException
      The getOutputStream method from the URL. First an attempt is made to get the URLConnection object for the URL. If that succeeds, the getOutputStream method on the URLConnection is returned.
      Specified by:
      getOutputStream in interface DataSource
      Returns:
      the OutputStream.
      Throws:
      IOException - for failures creating the OutputStream

    • getURL

      public URL getURL()
      Return the URL used to create this DataSource.
      Returns:
      The URL.