HyTime Clause 6: Base module

From ISO/IEC 10744:1992.

© International Organization for Standardization 1992. Permission to copy in any form is granted for use with conforming HyTime systems and applications as defined in ISO/IEC 10744, provided this notice is included in all copies.

6.4 HyTime document

Location address architectural forms

Resource architectural forms: base module

Resource architectural forms: measurement module

Resource architectural forms: scheduling module

<!ENTITY % resschd "axis | exrecon | calspec | mallobj">

Resource architectural forms: rendition module

Resource architectural forms: all modules

<!ENTITY % resorce "(%resbase;) | (%resmeas;) | (%resschd;) | (%resrend;)">

HyBrid content (for use in content models)

<!ENTITY % HyBrid "fcs | %resorce; | HyBrid | nHyTime | #PCDATA">

HyTime document element

<!element HyDoc - O (%HyBrid;)* +(%loc; | %link;)>

<!attlist HyDoc HyTime NAME HyDoc boslevel NUMBER #IMPLIED unmspace (unified | separate) separate -- docmdu attributes -- -- common attributes -->

HyTime: HyTime architectural form; Unique value specified by standard for each element type form
boslevel: Bounding level of HyTime bounded object set when document is a hub; overridable at run time; Constraint: 0=no limit; 1=root; 2 to N; Default: application BOS
unmspace: Unified name space for IDs and entities

6.4.1 HyTime/non-HyTime bridge element

<!element HyBrid - O (%HyBrid;)* +(%loc; | %link;)>

<!attlist HyBrid HyTime NAME HyBrid -- common attributes -->

#CONTENT: Bridge between HyTime and non-HyTime elements

6.4.2 Non-HyTime element

<!element nHyTime - O ANY>

<!attlist nHyTime HyTime NAME nHyTime -- common attributes -->

#CONTENT: Establishes "no HyTime processing" mode for all levels of its content, except for common attributes
HyTime: Defined for nested nHyTime elements only if common attributes are defined for element type

6.5.2.1 Lexical model

<!element lexmodel - O (%HyBrid;)*>

<!attlist lexmodel HyTime NAME lexmodel ltn NAME #REQUIRED lexord CDATA #IMPLIED boundary (sodeod | sodiec | isceod | isciec | inmodel) sodeod -- common attributes -->

ltn: Lexical type name; Constraint: unique in element type
lexord: Lexicographic ordering for comparisons; reftype(lexord); lextype(IDREF | (RNI, "SGMLCASE")); Default: character set order
boundary: Hit boundary constraint

6.5.2.2 Lexicographic ordering definition

Lexicographic Ordering Definition

<!element lexord - O (grapheme+)>

<!attlist lexord HyTime NAME lexord id ID #REQUIRED -- common attributes -->

Grapheme comparison key

<!element grapheme - O (%HyBrid;)*>

<!attlist grapheme HyTime NAME grapheme gs CDATA #REQUIRED gck NUMBERS #IMPLIED -- common attributes -->

gs: Grapheme string (case-sensitive); Constraint: must be unique in lexord
gck: Grapheme comparison key; Default: ignored in compare

6.5.5.2 Default value list element

<!element dvlist - O (#PCDATA)>

<!attlist dvlist HyTime NAME dvlist id ID #REQUIRED dvgi NAMES #IMPLIED preatts NAMES #IMPLIED -- common attributes -->

#CONTENT: ulextype(attlist)
dvgi: Default value element types; Applies to all elements if omitted; lextype(GIL); Default: all elements
preatts: Attributes whose values are to be preempted; Constraint: must be in dvlist content; Default: none

6.5.6.2 Description table

<!element desctab - O (desctxt, descdef)+>

<!attlist desctab HyTime NAME desctab id ID #REQUIRED -- common attributes -->

6.5.6.3 Descriptive text

<!element desctxt O O (#PCDATA)>

<!attlist desctxt HyTime NAME desctxt -- common attributes -->

#CONTENT: lextype(words)

6.5.6.4 Descriptive text definition

<!element descdef O O (%HyBrid;)*>

<!attlist descdef HyTime NAME descdef -- common attributes -->

6.5.7 Activity tracking policy

<!element activity - O (%HyBrid;)*>

<!attlist activity HyTime NAME activity id ID #REQUIRED actypes NAMES access -- common attributes -->

actypes: Activity types to which policy applies; lextype(("CREATE" | "MODIFY" | "LINK" | "ACCESS" | "UNLINK" | "DELETE"), (S+, ("CREATE" | "MODIFY" | "LINK" | "ACCESS" | "UNLINK" | "DELETE"))*)

6.7.1 Property definition

<!element propdef - O (%HyBrid;)*>

<!attlist propdef HyTime NAME propdef pn NAME #REQUIRED psn NAME #REQUIRED lex CDATA #IMPLIED inherent NAME #IMPLIED dspec CDATA #IMPLIED deforsyn (def | syn) def -- common attributes -->

pn: Property name; Constraint: must be unique in property set
psn: Property set name; lextype(NOTATION)
lex: Lexical type of property if not inherent; reftype(qpn | qltn); lextype(QPN | QLTN | ("Oo", GRPO, IDREF, GRPC))
inherent: Source of inherent property; lextype(NOTATION)
dspec: Definition of specifier for property; reftype(qpn | qltn); lextype(QPN | QLTN | ("Oo", GRPO, IDREF, GRPC))
deforsyn: Definition or synonym?

6.7.2 Qualified property name

Qualified property name

<!element qpn - O (pn, spec?)+>

<!attlist qpn HyTime NAME qpn id ID #REQUIRED -- common attributes -->

Property name

<!element pn - O RCDATA>

<!attlist pn HyTime NAME pn psn NAME #IMPLIED -- common attributes -->

#CONTENT: Constraint: must be a valid property name in psn; lextype(PN)
psn: Property set name; lextype(NOTATION); Default: fron qpnpsn

Specifier for property

<!element spec - O ((qpn | qltn)+ | pval)>

<!attlist spec HyTime NAME spec -- common attributes -->

Qualified lexical type name

<!element qltn - O RCDATA>

<!attlist qltn HyTime NAME qltn lmgi NAME #IMPLIED -- common attributes -->

#CONTENT: Constraint: must be a valid ltn of lmgi element type; lextype(LTN)
lmgi: Lexical model GI; lextype(GI); Default: from qltnlmgi

Property value

<!element pval - O RCDATA>

<!attlist pval HyTime NAME pval -- common attributes -->

#CONTENT: Constraint: must satisfy property

6.5 Common attributes

6.5.1 Identification attributes

<!attlist all-id id ID #IMPLIED notation NAME #IMPLIED delims CDATA #IMPLIED conloc IDREFS #CONREF context (context | ncontext) ncontext HyNames CDATA #FIXED "">

id: SGML unique identifier; Default: none
notation: Data content notation; Default: none
delims: Constraint: names are delimiter role names; Constraint: a given NAME can occur only once; lextype((NAME, s+, char*), (s+, NAME, s+, char*)*); Default: not changed
conloc: Content location (if not in syntactic content); Constraint: data or element that satisfies this element's content model, or element whose content satisfies this element's content model.; Default: syntactic content
context: Contextual content
HyNames: User names for HyTime attributes; Constraint: a given ATTNAME or #CONTENT can occur only once; lextype(ATTNAME, s+, (NAME | (RNI, "CONTENT")), (s+, ATTNAME, s+, (NAME | (RNI, "CONTENT")))*); Default: none

6.5.2 Lexical types

<!attlist all-lex lextype CDATA #FIXED "" lextypgi NAMES #FIXED in-DTD>

lextype: Lexical types of attribute values or character data content; Constraint: a given ATTNAME or #CONTENT can occur only once; a qltn must be an ltn of a lexmodel whose GI is specified in lextypgi; lextype(ATTORCON, s+, QLTN, (s+, ATTORCON, s+, QLTN)*); Default: none defined
lextypgi: Lexical model element types used by lextype; Constraint: searched in order listed; must be GIs of lexmodel form element types; lextype(GIL)

6.5.3 ID reference resolution control

<!attlist all-ref refrange CDATA #FIXED "#ALL I" reflevel CDATA #IMPLIED reftype CDATA #FIXED "#ALL #ANY">

refrange

ID reference resolution range

B: Backward reference to identified local element
D: Identified local element, before or after
I: Location address allowed
X: Indirect target, external to reference

Attribute declared value or lextype is IDREF

Constraint: a given ATTNAME or #CONTENT can occur only once

lextype((RNI, "ALL", s+, ("B" | "D" | "I" | "X"))?, (s+,
ATTORCON, s+, ("B" | "D" | "I" | "X"))*)

reflevel

ID reference resolution level

Level that IDREF resolution cannot exceed, relative to this element.

lextype((RNI, "ALL", s+, unzi)?, (s+, ATTORCON, s+,
unzi)*)

reftype

ID reference element type

Attribute declared value or lextype is IDREF

Constraint: a given ATTNAME or #CONTENT can occur only once; types apply to locations, not to intermediate location address elements

lextype((RNI, "ALL", s+, (((GI | unzi), (s+, RNI, "SEQ")?)
| (RNI, "ANY")))?, (s+, ATTORCON, s+, (((GI | unzi), (s+, RNI,
"SEQ")?) | (RNI, "ANY")))*)

6.5.4 Bit combination skip count

<!attlist all-bits bitskip NUMBERS #IMPLIED>

bitskip: Number of unparsed bit combinations to skip till end of element

6.5.5.1 Default value list attributes

<!attlist all-dvl subdvl IDREFS #IMPLIED sibdvl IDREFS #IMPLIED>

subdvl: Subelement impliable attribute value defaults; reftype(dvlist); Default: none
sibdvl: Sibling impliable attribute value defaults; reftype(dvlist); Default: none

6.5.6.1 Descriptive text attributes

<!attlist all-desc desctxt CDATA #CONREF desctab IDREFS #CURRENT>

desctxt: Descriptive text; If specified, its descdef in desctab is treated by HyTime as the element or as its content.; lextype(words); Default: none
desctab: Current description tables; Constraint: searched in order listed; reftype(desctab)

6.5.7 Activity tracking policy

<!attlist all-act activity IDREFS #IMPLIED>

activity: Activity tracking policy for this element; reftype(activity); Default: none

6.7.3 Qualifying name attributes

<!attlist all-qual qpnpsn NAMES #IMPLIED qltnlmgi NAMES #IMPLIED>

qpnpsn: QPN property set names; Constraint: searched in order listed; lextype(NOTATION, (s+, NOTATION)*); Default: standard sets
qltnlmgi: QLTN lexical model GIs; Constraint: searched in order listed; lextype(GIL); Default: none used

6.6 HyTime data attributes

6.6.1 Container notation form

<!attlist #NOTATION sbento HyTime NAME sbento unitsize NUMBER 8 -- common data attributes -->

sbento: Standard Bento Entity for Natural Transport of Objects; Attributes of sbento data content notation type; Creates container by partitioning storage object so several entities can store data in it.
unitsize: Sbento partitioning unit (bits per unit)

<!attlist #NOTATION any-dcn insbento CDATA #IMPLIED modgen NUMBERS #IMPLIED altreps NAMES #IMPLIED superdcn NAME #IMPLIED template NAME #IMPLIED methods CDATA #IMPLIED degrade CDATA #IMPLIED encoding NUMBERS "8 12" HyNames CDATA #FIXED "">

any-dcn

use: sbento nHyTime

Common attributes of data content notations

Any or all can be defined for a notation. Notation-specific alternatives can be used.

insbento

Location of this entity in a sbento's storage

External identifier of entity must be same as on sbento entity so SDIF will not duplicate data

ENTITY: sbento entity in which this occurs.
Digit+: Offset in sbento units (origin 0).
Digit+: Size in sbento units.

Offset/size repeatable for segmentation.

lextype(ENTITY, (s+, digit+, s+, digit+)+)

Default: not in a sbento

modgen

Modification generation

Constraint: two numbers

1st: 0 when created; incremented when modified.
2nd: Set to 1st when validated by application.

Default: not tracked

altreps

Alternative representations of this entity

Modgens can be compared for integrity checking

lextype(ENTITIES)

Default: none

superdcn

Notation from which this one is derived

lextype(NOTATION)

Default: not a derivation

template

Parsing and processing context for the entity

E.g.: macro definitions, profile, model, header, that are shared by several data entities

lextype(ENTITY)

Default: none

methods

Handlers for encapsulated data

Constraint: notation-specific format

Default: none

degrade

Degradation strategy if can't render perfectly

Constraing: notation-specific format

Default: none

encoding

Platform-dependent encoding information

Constraint: bit-combination size and "word" size, expressed as permutation of normalized word of 2, 4, or 8 bit combinations. MSB is leftmost and numbered "1"

Normalized="8 12", "8 1234", "8 12345678"

Example: Intel="8 21", "8 2143", "8 21436587"

HyNames

User names for HyTime attributes

lextype(ATTNAME, s+, NAME, (s+, ATTNAME, s+, NAME)*)

Default: none

Last updated and validated 31 May 2001.