com.itextpdf.pdfoptimizer.util.traversing

Class ReplaceObjectsAction

java.lang.Object

com.itextpdf.pdfoptimizer.util.traversing.ReplaceObjectsAction

All Implemented Interfaces:

IAction

public class ReplaceObjectsAction
extends Object
implements IAction

Replace objects in document structure according to provided rule.

Constructor Summary

Constructors

Constructor and Description
ReplaceObjectsAction(Map schema) Performs objects replacement according to a provided schema.

Method Summary

Modifier and Type	Method and Description
void	processIndirectObjectDefinition(com.itextpdf.kernel.pdf.PdfObject object) Does nothing as indirect object cannot be replaced.
com.itextpdf.kernel.pdf.PdfObject	processObject(com.itextpdf.kernel.pdf.PdfObject object) Replaces object if necessary according to the provided schema.

Methods inherited from class java.lang.Object

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

Constructor Detail

ReplaceObjectsAction

public ReplaceObjectsAction(Map schema)

Performs objects replacement according to a provided schema. There are several limitations:

• PdfObject to be replaced is identified by Object.equals(Object) method. Depending on the class implementation it might comparing by content or by reference.
• no transitivity is allowed. An object cannot replace the second object and be replaced by the third one.

Parameters:

schema - is a schema of replacement. It is a map where a key stands for the object to be replaced and the value stands for the object to replace.

Method Detail

processIndirectObjectDefinition

public void processIndirectObjectDefinition(com.itextpdf.kernel.pdf.PdfObject object)

Does nothing as indirect object cannot be replaced. If it has to be removed, it will be ignored on flushing as unused indirect object (supposing that PdfDocument.isFlushUnusedObjects() is set to false).

Specified by:

processIndirectObjectDefinition in interface IAction

Parameters:

object - is an indirect object definition to process

processObject

public com.itextpdf.kernel.pdf.PdfObject processObject(com.itextpdf.kernel.pdf.PdfObject object)

Replaces object if necessary according to the provided schema.

Specified by:

processObject in interface IAction

Parameters:

object - is a current PdfObject

Returns:

an object that should replace current one. Can be the same instance as argument to avoid replacement