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## org.apache.fop.pdf
Class PDFMetadata

    java.lang.Object
      org.apache.fop.pdf.PDFObject
          org.apache.fop.pdf.AbstractPDFStream
              org.apache.fop.pdf.PDFStream
                  org.apache.fop.pdf.PDFMetadata

All Implemented Interfaces:
  PDFWritable

    public class PDFMetadata

extends PDFStream

Special PDFStream for Metadata.

Since:
  PDF 1.4

Field Summary

Fields inherited from class org.apache.fop.pdf.PDFStream
`data`

Fields inherited from class org.apache.fop.pdf.PDFObject
`log`

Constructor Summary
`PDFMetadata(org.apache.xmlgraphics.xmp.Metadata xmp, boolean readOnly)`

Method Summary
`static org.apache.xmlgraphics.xmp.Metadata` | `createXMPFromPDFDocument(PDFDocument pdfDoc)` Creates an XMP document based on the settings on the PDF Document.
`protected java.lang.String` | `getDefaultFilterName()` Returns the name of a suitable filter for this PDF object.
`org.apache.xmlgraphics.xmp.Metadata` | `getMetadata()`
`int` | `output(java.io.OutputStream stream)` overload the base object method so we don't have to copy byte arrays around so much Overload the base object method so we don't have to copy byte arrays around so much Write the PDF represention of this object
`protected void` | `outputRawStreamData(java.io.OutputStream out)` Sends the raw stream data to the target OutputStream.
`protected void` | `populateStreamDict(java.lang.Object lengthEntry)` Populates the dictionary with all necessary entries for the stream.
`static void` | `updateInfoFromMetadata(org.apache.xmlgraphics.xmp.Metadata meta, PDFInfo info)` Updates the values in the Info object from the XMP metadata according to the rules defined in PDF/A-1 (ISO 19005-1:2005)

Methods inherited from class org.apache.fop.pdf.PDFStream
`add, add, getBufferOutputStream, getBufferWriter, getDataLength, getSizeHint, setData`

Methods inherited from class org.apache.fop.pdf.AbstractPDFStream
`encodeAndWriteStream, encodeStream, get, getChildren, getDictionary, getFilterList, multipleFiltersAllowed, outputStreamData, prepareImplicitFilters, put, registerChildren, setDocument, setupFilterList`

Methods inherited from class org.apache.fop.pdf.PDFObject
`contentEquals, encode, encodeBinaryToHexString, encodeString, encodeText, formatObject, getDocument, getDocumentSafely, getGeneration, getObjectID, getObjectNumber, getParent, hasObjectNumber, makeReference, outputInline, referencePDF, setObjectNumber, setObjectNumber, setObjectNumber, setParent, toPDF, toPDFString`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### PDFMetadata

    public PDFMetadata(org.apache.xmlgraphics.xmp.Metadata xmp,
                       boolean readOnly)

Parameters:
  `xmp` - xmp metadata
  `readOnly` - true if read only
See Also:
  `PDFObject.PDFObject()`

Method Detail

### getDefaultFilterName

    protected java.lang.String getDefaultFilterName()

  Returns the name of a suitable filter for this PDF object.

  Overrides:
    `getDefaultFilterName` in class `AbstractPDFStream`
  Returns:
    the default filter
  See Also:
    `PDFFilterList`

### getMetadata

    public org.apache.xmlgraphics.xmp.Metadata getMetadata()

  Returns:
    the XMP metadata

### output

    public int output(java.io.OutputStream stream)
               throws java.io.IOException

  overload the base object method so we don't have to copy byte arrays around so much Overload the base object method so we don't have to copy byte arrays around so much Write the PDF represention of this object

  Overrides:
    `output` in class `PDFStream`
  Parameters:
    `stream` - the stream to write the PDF to
  Returns:
    the number of bytes written
  Throws:
    `java.io.IOException` - if there is an error writing to the stream

### outputRawStreamData

    protected void outputRawStreamData(java.io.OutputStream out)
                                throws java.io.IOException

  Sends the raw stream data to the target OutputStream.

  Overrides:
    `outputRawStreamData` in class `PDFStream`
  Parameters:
    `out` - OutputStream to write to
  Throws:
    `java.io.IOException` - In case of an I/O problem

### populateStreamDict

    protected void populateStreamDict(java.lang.Object lengthEntry)

  Populates the dictionary with all necessary entries for the stream. Override this method if you need additional entries.

  Overrides:
    `populateStreamDict` in class `AbstractPDFStream`
  Parameters:
    `lengthEntry` - value for the /Length entry

### createXMPFromPDFDocument

    public static org.apache.xmlgraphics.xmp.Metadata createXMPFromPDFDocument(PDFDocument pdfDoc)

  Creates an XMP document based on the settings on the PDF Document.

  Parameters:
    `pdfDoc` - the PDF Document
  Returns:
    the requested XMP metadata

### updateInfoFromMetadata

    public static void updateInfoFromMetadata(org.apache.xmlgraphics.xmp.Metadata meta,
                                              PDFInfo info)

  Updates the values in the Info object from the XMP metadata according to the rules defined in PDF/A-1 (ISO 19005-1:2005)

  Parameters:
    `meta` - the metadata
    `info` - the Info object

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