ATG Search provides a constraint language to express arbitrary Boolean combinations of the index item constraints described in this section. For example, to constrain a query to one of three document sets, the constraint expression would be a Boolean OR of three document set constraints. To constrain a query to documents with two property values, the constraint expression would be a Boolean AND of two property constraints. To constrain a query to documents without a property value or not within a document set, a Boolean NOT of those constraints would be used. The BNF for the XML representation of the query constraint expressions is shown below.
expression := or_exp | and_exp | not_exp | set_exp | format_exp | type_exp
| doc_exp | date_exp | prop_exp | strprop_exp | numprop_exp ;
or_exp := "<or>" expression+ "</or>" ;and_exp := "<and>" expression+ "</and>" ;not_exp := "<not>" expression+ "</not>" ;set_exp := "<set subdirs=\"true|false\">" docset_path "</set>"format_exp := "<format>" format "</format>"type_exp := "<type>" file_suffix "</type>"doc_exp := "<doc>" URL "</doc>"date_exp := "<date op=\"num_op\" >"date_string"</date>"
prop_exp := "<prop type=\"type\" name=\"name\" op=\"str_op\" >"value"</prop>"
strprop_exp := "<strprop name=\"name\" op=\"str_op\" >"value"</strprop>"
numprop_exp := "<numprop name=\"name\" op=\"num_op\" >"value"</numprop>"
format := html|text|pdf|other|xhtml|xml|all
date_string := YYYY|YY|MMYY|MMYYYY|MMDDYY|MMDDYYYY
date_string :=monthDDYY|YYYY
num_op := greater|greatereq|less|lesseq|equal|between|within
str_op :=
greater|greatereq|less|lesseq|equal|between|within|contains|starts|ends
An <or> element represents a Boolean OR. The statement is TRUE if one of its contained expressions is TRUE, otherwise it evaluates to FALSE.
The <and> element represents a Boolean AND, which is TRUE if all of its contained expressions are TRUE, otherwise it evaluates to FALSE.
The <not> element represents a Boolean NOT, which returns TRUE if none of its contained expressions are TRUE, otherwise it returns FALSE.
