Abstract: Provided are techniques for retrieving a document that includes for each page an area that is ignored by applications that process the document and that includes a different internal index set associated with each subset of pages of the document, wherein each different internal index set is associated with an area and stores indexes, and wherein each of the indexes consists of a name-value pair. Then, for each page in the document, it is determined whether the page is associated with an internal index set; and, in response to determining that the page is associated with an internal index set, one or more name-value pairs from the internal index set are extracted, wherein each of the one or more name-value pairs provides specific information about the document for use in identifying the document.

Abstract: According to one embodiment of the present invention, a method for inserting a PDF shared resource back into a PDF statement is provided. The method includes storing a set of statements, wherein each statement has been extracted from a document and each statement contains indirect objects. A set of resources is then stored, wherein the resources have been extracted from the document, and the resources include a set of indirect objects. All of the indirect objects in a selected one of the stored statements are then enumerated and a determination is made of which of the indirect objects contain keys. A key value for the enumerated indirect objects containing keys is then read, and the indirect objects in the stored set of resources associated with each key are identified. Stream data is then copied from the indirect objects in the stored set of resources into the selected ones of the stored statements.

Abstract: According to one embodiment of the present invention, a method for inserting a PDF shared resource back into a PDF statement is provided. The method includes storing a set of statements, wherein each statement has been extracted from a document and each statement contains indirect objects. A set of resources is then stored, wherein the resources have been extracted from the document, and the resources include a set of indirect objects. All of the indirect objects in a selected one of the stored statements are then enumerated and a determination is made of which of the indirect objects contain keys. A key value for the enumerated indirect objects containing keys is then read, and the indirect objects in the stored set of resources associated with each key are identified. Stream data is then copied from the indirect objects in the stored set of resources into the selected ones of the stored statements.