org.corpus_tools.annis.gui

Class PDFPageHelper

java.lang.Object

org.corpus_tools.annis.gui.PDFPageHelper

public class PDFPageHelper
extends Object

Helps to extract page number annotations from SSpan of a salt document.

It uses the following algorithm:

• Get all spans which are annoteted with a page number.
• Create intervalls left and right token index of the annis model with the help of SFeatures and AnnisConstants and build a mapping from these intervalls to the sspan.
• Get the best fitting intervall for a specific span.

Author:

Benjamin Weißenfels <b.pixeldrama@gmail.com>

Field Summary

Fields

Modifier and Type	Field and Description
static String	DEFAULT_PAGE_NUMBER_ANNOTATION_NAME
static String	MAPPING_PAGE_KEY
static String	PAGE_NO_VALID_NUMBER
static String	PAGE_NUMBER_SEPERATOR

Constructor Summary

Constructors

Constructor and Description
PDFPageHelper(VisualizerInput visInput)

Method Summary

Modifier and Type	Method and Description
String	getMostLeftAndMostRightPageAnno() Creates a String (eg.
String	getPageFromAnnotation(org.corpus_tools.salt.core.SNode node) Returns the value of page annotation for a node.
String	getPDFPageAnnotationName() Gets the pdf page annotation name.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

MAPPING_PAGE_KEY

public static final String MAPPING_PAGE_KEY

See Also:

Constant Field Values

DEFAULT_PAGE_NUMBER_ANNOTATION_NAME

public static final String DEFAULT_PAGE_NUMBER_ANNOTATION_NAME

See Also:

Constant Field Values

PAGE_NUMBER_SEPERATOR

public static final String PAGE_NUMBER_SEPERATOR

See Also:

Constant Field Values

PAGE_NO_VALID_NUMBER

public static final String PAGE_NO_VALID_NUMBER

See Also:

Constant Field Values

Constructor Detail

PDFPageHelper

public PDFPageHelper(VisualizerInput visInput)

Method Detail

getMostLeftAndMostRightPageAnno

public String getMostLeftAndMostRightPageAnno()

Creates a String (eg. 3-9 or 3), based on the most left and most right page annotation.

The page annotation is detected with getPageFromAnnotation(SNode)

Returns:

A String which represents the start and the end page of a pdf, Separated by PAGE_NUMBER_SEPERATOR. If there is no end page, or exactly one page annotation, only a String with one number is returned.

getPageFromAnnotation

public String getPageFromAnnotation(org.corpus_tools.salt.core.SNode node)

Returns the value of page annotation for a node. It takes the visualizer mappings into account. If no mapping is defined, this default definition is used: DEFAULT_PAGE_NUMBER_ANNOTATION_NAME

getPDFPageAnnotationName

public String getPDFPageAnnotationName()

Gets the pdf page annotation name. It takes into account the mappings defined in VisualizerInput.mappings.