Package org.apache.xmlbeans.impl.soap

Class AttachmentPart

java.lang.Object
org.apache.xmlbeans.impl.soap.AttachmentPart
public abstract class AttachmentPart
extends Object

A single attachment to a SOAPMessage object. A SOAPMessage object may contain zero, one, or many AttachmentPart objects. Each AttachmentPart object consists of two parts, application-specific content and associated MIME headers. The MIME headers consists of name/value pairs that can be used to identify and describe the content.

An AttachmentPart object must conform to certain standards.

  1. It must conform to MIME [RFC2045] standards
  2. It MUST contain content
  3. The header portion MUST include the following header:
    • Content-Type
      This header identifies the type of data in the content of an AttachmentPart object and MUST conform to [RFC2045]. The following is an example of a Content-Type header: 
            Content-Type:  application/xml
      The following line of code, in which ap is an AttachmentPart object, sets the header shown in the previous example. 
            ap.setMimeHeader("Content-Type", "application/xml");

There are no restrictions on the content portion of an AttachmentPart object. The content may be anything from a simple plain text object to a complex XML document or image file.

An AttachmentPart object is created with the method SOAPMessage.createAttachmentPart. After setting its MIME headers, the AttachmentPart object is added to the message that created it with the method SOAPMessage.addAttachmentPart.

The following code fragment, in which m is a SOAPMessage object and contentStringl is a String, creates an instance of AttachmentPart, sets the AttachmentPart object with some content and header information, and adds the AttachmentPart object to the SOAPMessage object.

    AttachmentPart ap1 = m.createAttachmentPart();
    ap1.setContent(contentString1, "text/plain");
    m.addAttachmentPart(ap1);

The following code fragment creates and adds a second AttachmentPart instance to the same message. jpegData is a binary byte buffer representing the jpeg file.

    AttachmentPart ap2 = m.createAttachmentPart();
    byte[] jpegData =  ...;
    ap2.setContent(new ByteArrayInputStream(jpegData), "image/jpeg");
    m.addAttachmentPart(ap2);

The getContent method retrieves the contents and header from an AttachmentPart object. Depending on the DataContentHandler objects present, the returned Object can either be a typed Java object corresponding to the MIME type or an InputStream object that contains the content as bytes.

    String content1 = ap1.getContent();
    java.io.InputStream content2 = ap2.getContent();
The method clearContent removes all the content from an AttachmentPart object but does not affect its header information. 
    ap1.clearContent();

  • Constructor Details

    • AttachmentPart

      public AttachmentPart()
      Create a new AttachmentPart.

  • Method Details

    • getSize

      public abstract int getSize() throws SOAPException
      Returns the number of bytes in this AttachmentPart object.
      Returns:
      the size of this AttachmentPart object in bytes or -1 if the size cannot be determined
      Throws:
      SOAPException - if the content of this attachment is corrupted of if there was an exception while trying to determine the size.

    • clearContent

      public abstract void clearContent()
      Clears out the content of this AttachmentPart object. The MIME header portion is left untouched.

    • getContent

      public abstract Object getContent() throws SOAPException
      Gets the content of this AttachmentPart object as a Java object. The type of the returned Java object depends on (1) the DataContentHandler object that is used to interpret the bytes and (2) the Content-Type given in the header.

      For the MIME content types "text/plain", "text/html" and "text/xml", the DataContentHandler object does the conversions to and from the Java types corresponding to the MIME types. For other MIME types,the DataContentHandler object can return an InputStream object that contains the content data as raw bytes.

      A JAXM-compliant implementation must, as a minimum, return a java.lang.String object corresponding to any content stream with a Content-Type value of text/plain, a javax.xml.transform.StreamSource object corresponding to a content stream with a Content-Type value of text/xml, a java.awt.Image object corresponding to a content stream with a Content-Type value of image/gif or image/jpeg. For those content types that an installed DataContentHandler object does not understand, the DataContentHandler object is required to return a java.io.InputStream object with the raw bytes.

      Returns:
      a Java object with the content of this AttachmentPart object
      Throws:
      SOAPException - if there is no content set into this AttachmentPart object or if there was a data transformation error

    • setContent

      public abstract void setContent​(Object object, String contentType)
      Sets the content of this attachment part to that of the given Object and sets the value of the Content-Type header to the given type. The type of the Object should correspond to the value given for the Content-Type. This depends on the particular set of DataContentHandler objects in use.
      Parameters:
      object - the Java object that makes up the content for this attachment part
      contentType - the MIME string that specifies the type of the content
      Throws:
      IllegalArgumentException - if the contentType does not match the type of the content object, or if there was no DataContentHandler object for this content object
      See Also:
      getContent()

    • getContentId

      public String getContentId()
      Gets the value of the MIME header whose name is "Content-Id".
      Returns:
      a String giving the value of the "Content-Id" header or null if there is none
      See Also:
      setContentId(java.lang.String)

    • getContentLocation

      public String getContentLocation()
      Gets the value of the MIME header "Content-Location".
      Returns:
      a String giving the value of the "Content-Location" header or null if there is none

    • getContentType

      public String getContentType()
      Gets the value of the MIME header "Content-Type".
      Returns:
      a String giving the value of the "Content-Type" header or null if there is none

    • setContentId

      public void setContentId​(String contentId)
      Sets the MIME header "Content-Id" with the given value.
      Parameters:
      contentId - a String giving the value of the "Content-Id" header
      Throws:
      IllegalArgumentException - if there was a problem with the specified contentId value
      See Also:
      getContentId()

    • setContentLocation

      public void setContentLocation​(String contentLocation)
      Sets the MIME header "Content-Location" with the given value.
      Parameters:
      contentLocation - a String giving the value of the "Content-Location" header
      Throws:
      IllegalArgumentException - if there was a problem with the specified content location

    • setContentType

      public void setContentType​(String contentType)
      Sets the MIME header "Content-Type" with the given value.
      Parameters:
      contentType - a String giving the value of the "Content-Type" header
      Throws:
      IllegalArgumentException - if there was a problem with the specified content type

    • removeMimeHeader

      public abstract void removeMimeHeader​(String header)
      Removes all MIME headers that match the given name.
      Parameters:
      header - - the string name of the MIME header/s to be removed

    • removeAllMimeHeaders

      public abstract void removeAllMimeHeaders()
      Removes all the MIME header entries.

    • getMimeHeader

      public abstract String[] getMimeHeader​(String name)
      Gets all the values of the header identified by the given String.
      Parameters:
      name - the name of the header; example: "Content-Type"
      Returns:
      a String array giving the value for the specified header
      See Also:
      setMimeHeader(java.lang.String, java.lang.String)

    • setMimeHeader

      public abstract void setMimeHeader​(String name, String value)
      Changes the first header entry that matches the given name to the given value, adding a new header if no existing header matches. This method also removes all matching headers but the first.

      Note that RFC822 headers can only contain US-ASCII characters.

      Parameters:
      name - a String giving the name of the header for which to search
      value - a String giving the value to be set for the header whose name matches the given name
      Throws:
      IllegalArgumentException - if there was a problem with the specified mime header name or value

    • addMimeHeader

      public abstract void addMimeHeader​(String name, String value)
      Adds a MIME header with the specified name and value to this AttachmentPart object.

      Note that RFC822 headers can contain only US-ASCII characters.

      Parameters:
      name - a String giving the name of the header to be added
      value - a String giving the value of the header to be added
      Throws:
      IllegalArgumentException - if there was a problem with the specified mime header name or value

    • getAllMimeHeaders

      public abstract Iterator getAllMimeHeaders()
      Retrieves all the headers for this AttachmentPart object as an iterator over the MimeHeader objects.
      Returns:
      an Iterator object with all of the Mime headers for this AttachmentPart object

    • getMatchingMimeHeaders

      public abstract Iterator getMatchingMimeHeaders​(String[] names)
      Retrieves all MimeHeader objects that match a name in the given array.
      Parameters:
      names - a String array with the name(s) of the MIME headers to be returned
      Returns:
      all of the MIME headers that match one of the names in the given array as an Iterator object

    • getNonMatchingMimeHeaders

      public abstract Iterator getNonMatchingMimeHeaders​(String[] names)
      Retrieves all MimeHeader objects whose name does not match a name in the given array.
      Parameters:
      names - a String array with the name(s) of the MIME headers not to be returned
      Returns:
      all of the MIME headers in this AttachmentPart object except those that match one of the names in the given array. The nonmatching MIME headers are returned as an Iterator object.