| command | matches... |
|---|---|
| "universit" | words that start as specified |
| universit | words that start as specified by non-reserved alphanumeric string |
| "to be or not to be" | phrases that start as specified |
| "1965".."1974" | strings within the range specified |
| war near peace | words near (within 80 characters) another word |
| war fby.30 peace | words followed within 30 characters by another word |
| war not near.20 peace | words not followed within 20 characters by another word |
| signif.4 "university " | the most frequent 4-word phrase starting with a word |
| signif "univers" | the most frequent word starting with a prefix |
| signif.-5 "to be or" | the fifth most frequent phrase starting with a prefix |
| colleg within docs T | words within regions of given type |
| (docs LF) not within docs HG | regions not within regions of given type |
| docs DEF incl colleg | regions of given type containing specified words |
| docs DEF incl.5 colleg | regions of given type containing 5 occurrences of specified words |
| docs " | (smallest) regions starting and ending with specified "words" |
| (docs Q incl knuth) + (docs Q incl wiederhold) | union of two sets of regions |
| "university " + "university<" | looking for a word |
| heb - hebrides | difference between two sets of words |
| shakespeare = docs EQ incl "shaks" | naming a resulting set |
| docs E incl *shakespeare | using a named set |
| docs HG within % | using the results of the previous set |
PATTM is a registered trademark of Open Text Corporation
The following grammar describes the formal syntax of a subset of the query language accepted by PATTM. When PATTM is accessed through the Web, certain language features are meaningless and/or disabled. Thus, this grammar omits language features addressing index control, environment control, stopping, querying history, lrep, and printing.
The notation <string;> refers to either an alphanumeric sequence of characters starting with an alphabetic character or an arbitrary character string surrounded by double quotes (and within which a double quote character must be preceded by a back slash). <number> refers to a sequence of digits, and <empty> is an empty string.
Statement : Query
| <string> "=" Query
| <empty>
Query : Boolean
| OpCode OptParam OptQuery
Boolean : Boolean "+" ABoolean
| ABoolean
ABoolean : ABoolean "^" RBoolean
| NxtBoolean
| RBoolean "not" "nxt" Proxim RBoolean
| FbyBoolean
| RBoolean "not" "fby" Proxim RBoolean
| DiffBoolean
| RBoolean
FbyBoolean : RBoolean "fby" Proxim FbyBoolean
| RBoolean "fby" Proxim RBoolean
NxtBoolean : RBoolean "nxt" Proxim NxtBoolean
| RBoolean "nxt" Proxim RBoolean
DiffBoolean : DiffBoolean "-" RBoolean
| RBoolean "-" RBoolean
| RBoolean "including" OptParam RBoolean
| RBoolean "within" RBoolean
RBoolean : PrimBoolean
| <string> ".." <string>
| "docs"
| "docs" <string>
| "docs" PrimBoolean ".." PrimBoolean
PrimBoolean : <string>
| "(" Query ")"
| <number>
| "[" <number> "]"
| "*" <string>
| "%"
Proxim : <empty> | "." <number>
OpCode : "sample" | "signif" | "shift"
OptParam : <empty> | "." <number> | "." "-" <number>
OptQuery : <empty> | Query
