Search Physics Notes

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Publication Level and Physic Group

The publication field is determinant for the search results. Documents are published in one of the 3 levels :

• public (anybody can access),
• private to BU (only BU registered users can access),
• group private (only BU registered users belonging to the physics group can access).

Therefore :

A non registered user can search/retrieve the public documents.

A registered user, after s/he authenticates can search/retrieve all the documents "private to BU only" and the private documents of the groups s/he belongs to.

To access the documents private to their group, the user must select the physics group. Users belonging to more than one group can search only one group at a time.

A document is only of one level of publication : Documents that are BU-private or group-private are not retrieved when the user asks for the public documents. Documents that are group-private are not retrieved when the user asks for the BU-private documents, etc.

Boolean Operators

AND, AND NOT, OR

Search Pattern

The Search Pattern is a regular expression, which is similar to the paterns used by the Unix utilities grep and sed. The pattern sequences you can use are shown in the table below:

Sequence	Meaning
^	Match the beginning of the string
$	Match the end of the string
.	Match any single character, including new line
[...]	Matches any character appearing between the brackets
[^...]	Matches any character not appearing between the brackets
e*	Matches zero or more instances of pattern element e
e+	Matches one or more instances of pattern element e
e?	Matches zero or one instances of pattern element e
e1|e2	Match pattern element e1 or e2
e{m}	Match m instances of pattern element e
e{m,}	Match m or more instances of pattern element e
e{,n}	Match zero to n instances of pattern element e
e{m,n}	Match m to n instances of pattern element e
(...)	Group pattern elements into a single element
other	Non-special characters match themselves

Metacharacters

The characters: ^,$,.,*,+,{,},|,(,),' have to be backslashed if they are part of the searching text