Package com.independentsoft.graph

Class Attachment

java.lang.Object
com.independentsoft.graph.Attachment
All Implemented Interfaces:
ICreatable
Direct Known Subclasses:
FileAttachment, ItemAttachment, ReferenceAttachment
public abstract class Attachment extends Object implements ICreatable
Abstract base class for attachments in Microsoft Graph.

Attachments can be added to messages, events, and other items. Microsoft Graph supports three types of attachments:

  • FileAttachment - A file (such as a document, image, or PDF) attached to a message or event
  • ItemAttachment - An Outlook item (message, event, contact) attached to another item
  • ReferenceAttachment - A link to a file on OneDrive or other cloud storage

Attachments have size limits:

  • File attachments: Up to 150 MB per attachment
  • Total attachments per message: Up to 150 MB combined

Example usage: 

 // Add a file attachment to a message
 FileAttachment attachment = new FileAttachment();
 attachment.setName("report.pdf");
 attachment.setContentType("application/pdf");
 attachment.setContentBytes(fileBytes);
 
 Message message = new Message();
 message.setSubject("Monthly Report");
 message.getAttachments().add(attachment);
 
 client.createMessage(message);
Since:
1.0
See Also:
attachment resource type, fileAttachment resource type, itemAttachment resource type

  • Field Details

    • id

      protected String id

    • contentType

      protected String contentType

    • isInline

      protected boolean isInline

    • lastModifiedTime

      protected Date lastModifiedTime

    • name

      protected String name

    • size

      protected int size

  • Constructor Details

    • Attachment

      public Attachment()

  • Method Details

    • toCreateJson

      public abstract String toCreateJson()
      Generates JSON representation for creating this attachment.
      Specified by:
      toCreateJson in interface ICreatable
      Returns:
      JSON string for creation

    • getId

      public String getId()
      Gets the unique identifier of the attachment.
      Returns:
      The attachment ID

    • getContentType

      public String getContentType()
      Gets the MIME type of the attachment.
      Returns:
      The content type (e.g., "application/pdf", "image/jpeg")

    • setContentType

      public void setContentType​(String contentType)
      Sets the MIME type of the attachment.
      Parameters:
      contentType - The content type

    • isInline

      public boolean isInline()
      Checks if the attachment is inline (embedded in message body).
      Returns:
      true if the attachment is inline, false otherwise

    • setInline

      public void setInline​(boolean inline)
      Sets whether the attachment is inline.
      Parameters:
      inline - true for inline attachment, false for regular attachment

    • getLastModifiedTime

      public Date getLastModifiedTime()
      Gets the last modified date/time of the attachment.
      Returns:
      The last modified timestamp

    • getName

      public String getName()
      Gets the name of the attachment.
      Returns:
      The file name or attachment name

    • setName

      public void setName​(String name)
      Sets the name of the attachment.
      Parameters:
      name - The file name or attachment name

    • getSize

      public int getSize()
      Gets the size of the attachment in bytes.
      Returns:
      The size in bytes