HP StorageWorks Reference Information Storage System V1.5 User Guide (T3559-96045, November 2008)

ManualsBrandsHP ManualsSoftwareHP Integrated Archive Platform Replication Option E-LTU

PDF documents

PDF documents are another case where the internal text representation can vary widely from the visible

presentation in PDF readers. Some issues that can arise:

• Text sequences can appear out of order on the same page depending on how the page was

composed.

• Text can appear doubled or can have spacing inserted into or removed from the internal

repr esentation to assist some speciﬁcvisualpresentation.

In general, PDF documents generated via print drivers are far m ore susceptible to these issues than PDF

documents generated directly using Acrobat and other such composing tools. However, because of the

nature of PDF itself, even they are not immune.

Boolean query expressions

You can combine words, fuzzy words, and word sequences using Boolean (logical) operators AND, OR,

and NOT (these must be uppercase). The following table descri bes Boolean operators, where exp, exp1,

and exp2 represents a word, fuzzy word, word sequence, or other Boolean query expression.

Table 16 Boolean query expressions

Syntax

Matches

NOT exp

alternati

ve syntax: - exp

alternati

ve syntax: ! exp

all documents that do not match exp

exp1 OR exp2

all documents that match either exp1 or exp2

exp1 AND exp2

alternative sy ntax: exp1 && exp2

alternative syntax: exp1exp2

all documents that match both exp1 and exp2

NOTE:

ThesecondalternativesyntaxforANDindicatesthatANDisthedefaultconnectiveinqueryexpressions.

You do not need to supply AND explicitly. It is assumed if neither AND nor OR is used explicitly. For

example, the query peace quiet is equivalent to the query peace AND qu iet.

A NOT expression must be combined, using AND or OR, with another expression other than NOT.A

query cannot consist solely of negative criteria.

NOT quiet

illegal

(NOT quiet) AND (NOT blue) illegal

(NOT quiet) AND blue legal

(NOT quiet) OR nois*

legal

(NOT quiet) OR “peace quiet”

legal

You must p rovide the proper number of a rguments for a Boolean operator or an error message results:

oneargumentforNOT (- or !), two arguments for AND (&& )andOR. For example, the following

queries result in an err or message.

• alpha NOT:MissingargumentforNOT

• AND alpha: Missing argument for AND

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