Package eu.bandm.tools.dtd

Class EntityClassifier

java.lang.Object

eu.bandm.tools.rdparser.TunableParser<D>

eu.bandm.tools.rdparser.TunableParserForXml<XMLDocumentIdentifier>

eu.bandm.tools.dtd.TunedDTDParser

eu.bandm.tools.dtd.EntityClassifier

public class EntityClassifier
extends TunedDTDParser

Classifies DTD entities wrt EntityRole by attempts to parse their content against different start symbols using a TunedDTDParser. We proposed an extended Dtd.AttDef structure where the usage of classified entities could be encoded as follows:

  ent() means full contents of entity
  ent(0) means contents at leaf nr. 0 of parse tree of entity
  ent,0 means 2-tuple of reference to entity and this index number 

                               +name
                               |       +nameabbrev
                               |       |       +type
                               |       |       |       +typeabbrev
                               |       |       |       |       +value
                               |       |       |       |       |       +valueabbrev
                               |       |       |       |       |       |

  %ent;  (a|b)  #IMPLIED       ent()   ent     (a|b)   null    #IMP    null  
  ab     %ent;  #IMPLIED       ab      null    ent()   ent     #IMP    null
  ab     %ent;                 ab      null    ent(0)  ent,0   ent(1)  ent,1
one attdef in ent:
  %ent;                        ent(0)  ent,0   ent(1)  ent,1   ent(2)  ent,2
more attdefs in ent:
  %ent;                        null    ent,-1  null    null    null    null
                                        V
                                        V
 

FIXME insert "?" in DTD.umod : AttDef
       FORMAT "$tabular{0>name,20>type?,40>value?}"
     insert case "only nameabbrev" in attdef ??
     print "nameabbrev{asAtts}
 

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
class	EntityClassifier.CPEntityType	Classify entity replacement text w.r.t usability in content models.

Nested classes/interfaces inherited from class eu.bandm.tools.dtd.TunedDTDParser

TunedDTDParser.ParsingFailed

Nested classes/interfaces inherited from class eu.bandm.tools.rdparser.TunableParser

TunableParser.CharSet, TunableParser.ExtensionalCharSet

Field Summary

Fields inherited from class eu.bandm.tools.dtd.TunedDTDParser

currentElementName, entityUsage, errorOnExpand, generalEntities, ignoreErrors, LAZY_ENTITY_ERROR, nicePE, parameterEntities, UNPARSED_CONTENTS

Fields inherited from class eu.bandm.tools.rdparser.TunableParserForXml

asciiLetterSet, decDigitSet, encNameSet, hexDigitSet, initialSet, nameSet, prefix_GE, prefix_PE, pubidCharSet, sNoPESet, sSet, stringconstant_IGNORE, stringconstant_INCLUDE, versionNumSet

Fields inherited from class eu.bandm.tools.rdparser.TunableParser

base, in, messageReceiver, topleveldocumentid

Constructor Summary

Constructors

Constructor	Description
EntityClassifier()

Method Summary

Modifier and Type	Method	Description
EntityRole	classify(String text)	"classify()" only called for entities in an AttList context.

Methods inherited from class eu.bandm.tools.dtd.TunedDTDParser

attDef, attlistDecl, attType, attValue, AUX_convert, children, comment, conditionalSection, constructReplacementText, content, cp, declareGeneralEntity, declareParameterEntity, defaultDecl, dtd, elementDecl, encName, encodingDecl, entityDecl, entityValue, enumerated, eq, eRef, externalId, extSubset, fatalError, ignore, markupDecl, mixed, modifierOpt, name, niceEntityValue, nmtoken, notationDecl, parse, parse, parseId, parselocal, peRef, pi, pubidLiteral, resolve, retrieveGeneralEntity, retrieveParameterEntity, retrieveReplacementText, s, sNoPE, sOpt, sOptNoPE, storeEntityUsage, sWsOpt, systemLiteral, versionInfo, versionNum, xmlDecl

Methods inherited from class eu.bandm.tools.rdparser.TunableParserForXml

lookahead_pe, prefixedEntityName

Methods inherited from class eu.bandm.tools.rdparser.TunableParser

consume, eof, error, failure, getMessageReceiver, lookahead, lookahead, lookahead, lookahead, lookahead, lookahead_eof, match, match, match, match, matchahead, matchahead, matchahead, matchUpto, matchUpto, readExternal, setBase, setMessageReceiver, skipUpto, warning, word

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

EntityClassifier

public EntityClassifier()

Method Details

classify

public EntityRole classify(String text)

"classify()" only called for entities in an AttList context. Entities in content-def-context are treated in TunedDTDParser by "nicePE()", as in the original bt code !
The roles are coded in EntityRole:
N_V_ContentModel, = ident (attribute N-ame or V-alue or tag in contentm) N_V_ContentModel_IncIgn, = as above, or "IGNORE" "INCLUDE" NT, = attribute name AND type NTV, = attribute name AND type AND value NTVs, = idem, more than one of them T, = type of an attribute T_or_ContentModel, = part of a disjuntion or attribute enumeration type TV, = attribute type and value V, = attribute value (with "#FIXED" or "#IMPLIED" or with quotes) ContentModel, = must be content model IncIgn, = USED at an inc/ign place CrUdE = none of the above