Time-based constraints in OCL

Abstract

Error parsing XML in render_xhtml_field: :2: parser error : StartTag: invalid element name
uish between invariants and time-based constraints we introduce the stereotype <
                                                                               ^
:2: parser error : Specification mandate value for attribute constraint
nts and time-based constraints we introduce the stereotype <<temporal constraint
                                                                               ^
:3: parser error : Opening and ending tag mismatch: temporal line 2 and fragment
</fragment>
           ^
:3: parser error : Premature end of data in tag fragment line 1
</fragment>
           ^
	XML::LibXML::parse_string('XML::LibXML=HASH(0x2b13a330c340)', '<fragment>The Object Constraint Language OCL is a textual spe...') called at /home/eprints3/perl_lib/EPrints/XML/LibXML.pm line 106
	EPrints::XML::parse_xml_string('<fragment>The Object Constraint Language OCL is a textual spe...') called at /home/eprints3/perl_lib/EPrints/Extras.pm line 85
	eval {...} called at /home/eprints3/perl_lib/EPrints/Extras.pm line 85
	EPrints::Extras::render_xhtml_field('EPrints::Session=HASH(0x2b13b075ace0)', 'EPrints::MetaField::Longtext=HASH(0x2b13a63999a0)', 'The Object Constraint Language OCL is a textual specification...', 'undef', 'undef', 'EPrints::DataObj::EPrint=HASH(0x2b13aff42b80)') called at /home/eprints3/perl_lib/EPrints/MetaField.pm line 960
	EPrints::MetaField::call_property('EPrints::MetaField::Longtext=HASH(0x2b13a63999a0)', 'render_value', 'EPrints::Session=HASH(0x2b13b075ace0)', 'EPrints::MetaField::Longtext=HASH(0x2b13a63999a0)', 'The Object Constraint Language OCL is a textual specification...', 'undef', 'undef', 'EPrints::DataObj::EPrint=HASH(0x2b13aff42b80)') called at /home/eprints3/perl_lib/EPrints/MetaField.pm line 622
	EPrints::MetaField::render_value('EPrints::MetaField::Longtext=HASH(0x2b13a63999a0)', 'EPrints::Session=HASH(0x2b13b075ace0)', 'The Object Constraint Language OCL is a textual specification...', 'undef', 'undef', 'EPrints::DataObj::EPrint=HASH(0x2b13aff42b80)') called at /home/eprints3/perl_lib/EPrints/DataObj.pm line 759
	EPrints::DataObj::render_value('EPrints::DataObj::EPrint=HASH(0x2b13aff42b80)', 'abstract') called at /home/eprints3/archives/brighton/cfg/cfg.d/eprint_render.pl line 183
	EPrints::Config::brighton::__ANON__('EPrints::DataObj::EPrint=HASH(0x2b13aff42b80)', 'EPrints::Session=HASH(0x2b13b075ace0)', 'undef') called at /home/eprints3/perl_lib/EPrints/Repository.pm line 1170
	eval {...} called at /home/eprints3/perl_lib/EPrints/Repository.pm line 1170
	EPrints::Repository::call('EPrints::Repository=HASH(0x2b13a674b5e0)', 'eprint_render', 'EPrints::DataObj::EPrint=HASH(0x2b13aff42b80)', 'EPrints::Session=HASH(0x2b13b075ace0)', 'undef') called at /home/eprints3/perl_lib/EPrints/DataObj/EPrint.pm line 1717
	EPrints::DataObj::EPrint::render('EPrints::DataObj::EPrint=HASH(0x2b13aff42b80)') called at /home/eprints3/perl_lib/EPrints/DataObj/EPrint.pm line 1564
	EPrints::DataObj::EPrint::generate_static('EPrints::DataObj::EPrint=HASH(0x2b13aff42b80)') called at /home/eprints3/perl_lib/EPrints/Update/Abstract.pm line 85
	EPrints::Update::Abstract::update('EPrints::Repository=HASH(0x2b13a674b5e0)', 'en', 3275, '/archive/00/00/32/75/') called at /home/eprints3/perl_lib/EPrints/Apache/Rewrite.pm line 210
	EPrints::Apache::Rewrite::handler('Apache2::RequestRec=SCALAR(0x2b13aff75e90)') called at -e line 0
	eval {...} called at -e line 0