Package org.apache.tika.parser.pdf

Class PDFParserConfig

  • All Implemented Interfaces:
    Serializable
    public class PDFParserConfig
extends Object
implements Serializable
    Config for PDFParser.

    This allows parameters to be set programmatically:

    1. Calls to PDFParser, i.e. parser.getPDFParserConfig().setEnableAutoSpace() (as before)
    2. Passing to PDFParser through a ParseContext: context.set(PDFParserConfig.class, config);

    See Also:
    Serialized Form

    • Constructor Detail

      • PDFParserConfig

        public PDFParserConfig()

    • Method Detail

      • isExtractInlineImageMetadataOnly

        public boolean isExtractInlineImageMetadataOnly()
        Returns:
        whether or not to extract only inline image metadata and not render the images

      • isExtractMarkedContent

        public boolean isExtractMarkedContent()

      • setExtractMarkedContent

        public void setExtractMarkedContent​(boolean extractMarkedContent)
        If the PDF contains marked content, try to extract text and its marked structure. If the PDF does not contain marked content, backoff to the regular PDF2XHTML for text extraction. As of 1.24, this is an "alpha" version.
        Parameters:
        extractMarkedContent -
        Since:
        1.24

      • configure

        public void configure​(org.apache.tika.parser.pdf.PDF2XHTML pdf2XHTML)
        Configures the given pdf2XHTML.
        Parameters:
        pdf2XHTML -

      • setExtractAcroFormContent

        public void setExtractAcroFormContent​(boolean extractAcroFormContent)
        If true (the default), extract content from AcroForms at the end of the document. If an XFA is found, try to process that, otherwise, process the AcroForm.
        Parameters:
        extractAcroFormContent -

      • setIfXFAExtractOnlyXFA

        public void setIfXFAExtractOnlyXFA​(boolean ifXFAExtractOnlyXFA)
        If false (the default), extract content from the full PDF as well as the XFA form. This will likely lead to some duplicative content.
        Parameters:
        ifXFAExtractOnlyXFA -

      • setExtractBookmarksText

        public void setExtractBookmarksText​(boolean extractBookmarksText)
        If true, extract bookmarks (document outline) text.

        Te default is true

        Parameters:
        extractBookmarksText -

      • isExtractFontNames

        public boolean isExtractFontNames()

      • setExtractFontNames

        public void setExtractFontNames​(boolean extractFontNames)
        Extract font names into a metadata field
        Parameters:
        extractFontNames -

      • setExtractInlineImages

        public void setExtractInlineImages​(boolean extractInlineImages)
        If true, extract the literal inline embedded OBXImages.

        Beware: some PDF documents of modest size (~4MB) can contain thousands of embedded images totaling > 2.5 GB. Also, at least as of PDFBox 1.8.5, there can be surprisingly large memory consumption and/or out of memory errors.

        Along the same lines, note that this does not extract "logical" images. Some PDF writers break up a single logical image into hundreds of little images. With this option set to true, you might get those hundreds of little images.

        NOTE ALSO: this extracts the raw images without clipping, rotation, masks, color inversion, etc. The images that this extracts may look nothing like what a human would expect given the appearance of the PDF.

        Set to true only with the greatest caution. The default is false.

        Parameters:
        extractInlineImages -
        See Also:
        setExtractUniqueInlineImagesOnly(boolean)

      • setExtractUniqueInlineImagesOnly

        public void setExtractUniqueInlineImagesOnly​(boolean extractUniqueInlineImagesOnly)
        Multiple pages within a PDF file might refer to the same underlying image. If extractUniqueInlineImagesOnly is set to false, the parser will call the EmbeddedExtractor each time the image appears on a page. This might be desired for some use cases. However, to avoid duplication of extracted images, set this to true. The default is true.

        Note that uniqueness is determined only by the underlying PDF COSObject id, not by file hash or similar equality metric. If the PDF actually contains multiple copies of the same image -- all with different object ids -- then all images will be extracted.

        For this parameter to have any effect, extractInlineImages must be set to true.

        Because of TIKA-1742 -- to avoid infinite recursion -- no matter the setting of this parameter, the extractor will only pull out one copy of each image per page. This parameter tries to capture uniqueness across the entire document.

        Parameters:
        extractUniqueInlineImagesOnly -

      • setEnableAutoSpace

        public void setEnableAutoSpace​(boolean enableAutoSpace)
        If true (the default), the parser should estimate where spaces should be inserted between words. For many PDFs this is necessary as they do not include explicit whitespace characters.

      • setSuppressDuplicateOverlappingText

        public void setSuppressDuplicateOverlappingText​(boolean suppressDuplicateOverlappingText)
        If true, the parser should try to remove duplicated text over the same region. This is needed for some PDFs that achieve bolding by re-writing the same text in the same area. Note that this can slow down extraction substantially (PDFBOX-956) and sometimes remove characters that were not in fact duplicated (PDFBOX-1155). By default this is disabled.

      • setExtractAnnotationText

        public void setExtractAnnotationText​(boolean extractAnnotationText)
        If true (the default), text in annotations will be extracted.

      • setSortByPosition

        public void setSortByPosition​(boolean sortByPosition)
        If true, sort text tokens by their x/y position before extracting text. This may be necessary for some PDFs (if the text tokens are not rendered "in order"), while for other PDFs it can produce the wrong result (for example if there are 2 columns, the text will be interleaved). Default is false.

      • setAverageCharTolerance

        public void setAverageCharTolerance​(Float averageCharTolerance)
        See PDFTextStripper.setAverageCharTolerance(float)

      • setSpacingTolerance

        public void setSpacingTolerance​(Float spacingTolerance)
        See PDFTextStripper.setSpacingTolerance(float)

      • setDropThreshold

        public void setDropThreshold​(Float dropThreshold)
        See PDFTextStripper.setDropThreshold(float)

      • setAccessChecker

        public void setAccessChecker​(AccessChecker accessChecker)

      • setCatchIntermediateIOExceptions

        public void setCatchIntermediateIOExceptions​(boolean catchIntermediateIOExceptions)
        The PDFBox parser will throw an IOException if there is a problem with a stream. If this is set to true, Tika's PDFParser will catch these exceptions and try to parse the rest of the document. After the parse is completed, Tika's PDFParser will throw the first caught exception.
        Parameters:
        catchIntermediateIOExceptions -

      • setOcrStrategy

        public void setOcrStrategy​(PDFParserConfig.OCR_STRATEGY ocrStrategy)
        Which strategy to use for OCR
        Parameters:
        ocrStrategy -

      • setOcrStrategyAuto

        public void setOcrStrategyAuto​(String ocrStrategyAuto)

      • setOcrStrategy

        public void setOcrStrategy​(String ocrStrategyString)
        Which strategy to use for OCR
        Parameters:
        ocrStrategyString -

      • setOcrRenderingStrategy

        public void setOcrRenderingStrategy​(String ocrRenderingStrategyString)

      • setOcrRenderingStrategy

        public void setOcrRenderingStrategy​(PDFParserConfig.OCR_RENDERING_STRATEGY ocrRenderingStrategy)
        When rendering the page for OCR, do you want to include the rendering of the electronic text, ALL, or do you only want to run OCR on the images and vector graphics (NO_TEXT)?
        Parameters:
        ocrRenderingStrategy -

      • getOcrImageFormatName

        public String getOcrImageFormatName()
        String representation of the image format used to render the page image for OCR (examples: png, tiff, jpeg)
        Returns:

      • setOcrImageFormatName

        public void setOcrImageFormatName​(String ocrImageFormatName)
        Parameters:
        ocrImageFormatName - name of image format used to render page image
        See Also:
        getOcrImageFormatName()

      • getOcrImageType

        public org.apache.pdfbox.rendering.ImageType getOcrImageType()
        Image type used to render the page image for OCR.
        Returns:
        image type
        See Also:
        setOcrImageType(ImageType)

      • setOcrImageType

        public void setOcrImageType​(org.apache.pdfbox.rendering.ImageType ocrImageType)
        Image type used to render the page image for OCR.
        Parameters:
        ocrImageType -

      • setOcrImageType

        public void setOcrImageType​(String ocrImageTypeString)
        Image type used to render the page image for OCR.
        See Also:
        setOcrImageType(ImageType)

      • getOcrDPI

        public int getOcrDPI()
        Dots per inch used to render the page image for OCR
        Returns:
        dots per inch

      • setOcrDPI

        public void setOcrDPI​(int ocrDPI)
        Dots per inch used to render the page image for OCR. This does not apply to all image formats.
        Parameters:
        ocrDPI -

      • getOcrImageQuality

        public float getOcrImageQuality()
        Image quality used to render the page image for OCR. This does not apply to all image formats
        Returns:

      • setOcrImageQuality

        public void setOcrImageQuality​(float ocrImageQuality)
        Image quality used to render the page image for OCR. This does not apply to all image formats

      • isExtractActions

        public boolean isExtractActions()
        Returns:
        whether or not to extract PDActions
        See Also:
        setExtractActions(boolean)

      • setExtractActions

        public void setExtractActions​(boolean v)
        Whether or not to extract PDActions from the file. Most Action types are handled inline; javascript macros are processed as embedded documents.
        Parameters:
        v -

      • getMaxMainMemoryBytes

        public long getMaxMainMemoryBytes()
        The maximum amount of memory to use when loading a pdf into a PDDocument. Additional buffering is done using a temp file. The default is 512MB.
        Returns:

      • setMaxMainMemoryBytes

        public void setMaxMainMemoryBytes​(long maxMainMemoryBytes)

      • isSetKCMS

        public boolean isSetKCMS()

      • setSetKCMS

        public void setSetKCMS​(boolean setKCMS)

        Whether to call System.setProperty("sun.java2d.cmm", "sun.java2d.cmm.kcms.KcmsServiceProvider"). KCMS is the unmaintained, legacy provider and is far faster than the newer replacement. However, there are stability and security risks with using the unmaintained legacy provider.

        Note, of course, that this is not thread safe. If the value is false in your first thread, and the second thread changes this to true, the system property in the first thread will now be true.

        Default is false.

        Parameters:
        setKCMS - whether or not to set KCMS

      • isDetectAngles

        public boolean isDetectAngles()

      • setDetectAngles

        public void setDetectAngles​(boolean detectAngles)

      • hashCode

        public int hashCode()
        Overrides:
        hashCode in class Object

      • setRenderer

        public void setRenderer​(Renderer renderer)

      • getRenderer

        public Renderer getRenderer()

      • setImageStrategy

        public void setImageStrategy​(String imageStrategy)

      • setImageGraphicsEngineFactory

        public void setImageGraphicsEngineFactory​(ImageGraphicsEngineFactory imageGraphicsEngineFactory)
        EXPERT: Customize the class that handles inline images within a PDF page.
        Parameters:
        imageGraphicsEngineFactory -