ExtractAttachmentCommand

java.lang.Object
- com.sodius.mdw.metamodel.integrity.io.command.ExecutableCommandWrapper
- - com.sodius.mdw.metamodel.integrity.io.command.ExtractAttachmentCommand

All Implemented Interfaces:

ExecutableCommand
```
public class ExtractAttachmentCommand
extends ExecutableCommandWrapper
implements ExecutableCommand
```
Downloads an Attachment from an Item that exists in the Integrity database.

Constraints:
- The Attachment.fileName attribute must be set.
- The Attachment must be owned by a FieldValue.
- The FieldValue must be owned by its Item.
- The FieldValue must reference a Field.
Usage:
```
 new ExtractAttachmentCommand(myAttachment, myFile).execute();
 
```

Constructor Summary

Constructors
Constructor	Description
`ExtractAttachmentCommand(Attachment attachment, File outputFile)`	Instantiates a command to download an attachment content.
`ExtractAttachmentCommand(Attachment attachment, OutputStream output)`	Instantiates a command to download an attachment content.

Method Summary
- Methods inherited from class com.sodius.mdw.metamodel.integrity.io.command.ExecutableCommandWrapper
  execute
- Methods inherited from class java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
- Methods inherited from interface com.sodius.mdw.metamodel.integrity.io.command.ExecutableCommand
  execute

- Constructor Detail
  - ExtractAttachmentCommand
```
public ExtractAttachmentCommand(Attachment attachment,
                                File outputFile)
```
    Instantiates a command to download an attachment content.
    
    Parameters:
    
    attachment - the logical attachment.
    
    outputFile - the file in which the attachment content must be downloaded.
  - ExtractAttachmentCommand
```
public ExtractAttachmentCommand(Attachment attachment,
                                OutputStream output)
```
    Instantiates a command to download an attachment content.
    
    Parameters:
    
    attachment - the logical attachment.
    
    output - the stream in which the attachment content must be written.