forked from friendica/php-json-ld
Added support for framing defaults and fixed property checks.
This commit is contained in:
Dave Longley
parent
4d7d0fa0ae
commit
5d03e650ec
212
jsonld.php
212
jsonld.php
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@ -182,11 +182,15 @@ function jsonld_merge_contexts($ctx1, $ctx2)
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}
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// @coerce must be specially-merged, remove from contexts
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$coerceExists = isset($merged->{'@coerce'}) or isset($copy->{'@coerce'});
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$coerceExists =
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property_exists($merged, '@coerce') or
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property_exists($copy, '@coerce');
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if($coerceExists)
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{
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$c1 = isset($merged->{'@coerce'}) ? $merged->{'@coerce'} : new stdClass();
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$c2 = isset($copy->{'@coerce'}) ? $copy->{'@coerce'} : new stdClass();
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$c1 = property_exists($merged, '@coerce') ?
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$merged->{'@coerce'} : new stdClass();
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$c2 = property_exists($copy, '@coerce') ?
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$copy->{'@coerce'} : new stdClass();
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unset($merged->{'@coerce'});
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unset($copy->{'@coerce'});
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}
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@ -203,7 +207,7 @@ function jsonld_merge_contexts($ctx1, $ctx2)
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foreach($c1 as $type => $p1)
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{
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// append existing-type properties that don't already exist
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if(isset($c2->$type))
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if(property_exists($c2, $type))
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{
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$p2 = $c2->$type;
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@ -237,7 +241,7 @@ function jsonld_merge_contexts($ctx1, $ctx2)
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// add new types from new @coerce
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foreach($c2 as $type => $value)
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{
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if(!isset($c1->$type))
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if(!property_exists($c1, $type))
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{
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$c1->$type = $value;
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}
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@ -254,7 +258,7 @@ function jsonld_merge_contexts($ctx1, $ctx2)
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}
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foreach($p as $v)
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{
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if(!isset($unique->$v))
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if(!property_exists($unique, $v))
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{
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$unique->$v = true;
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}
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@ -327,7 +331,7 @@ function jsonld_frame($input, $frame, $options=null)
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// save frame context
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$ctx = null;
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if(isset($frame->{'@context'}))
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if(property_exists($frame, '@context'))
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{
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$ctx = jsonld_merge_contexts(
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jsonld_create_default_context(), $frame->{'@context'});
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@ -342,6 +346,7 @@ function jsonld_frame($input, $frame, $options=null)
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$options->defaults = new stdClass();
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$options->defaults->embedOn = true;
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$options->defaults->explicitOn = false;
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$options->defaults->omitDefaultOn = false;
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// build map of all subjects
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$subjects = new stdClass();
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@ -461,7 +466,7 @@ function _expandTerm($ctx, $term, $usedCtx)
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$prefix = substr($term, 0, $idx);
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// 1.1. See if the prefix is in the context:
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if(isset($ctx->$prefix))
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if(property_exists($ctx, $prefix))
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{
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// prefix found, expand property to absolute IRI
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$rval = $ctx->$prefix . substr($term, $idx + 1);
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@ -477,7 +482,7 @@ function _expandTerm($ctx, $term, $usedCtx)
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}
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}
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// 2. If the property is in the context, then it's a term.
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else if(isset($ctx->$term))
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else if(property_exists($ctx, $term))
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{
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$rval = $ctx->$term;
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if($usedCtx !== null)
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@ -518,7 +523,7 @@ function _expandTerm($ctx, $term, $usedCtx)
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*/
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function _setProperty($s, $p, $o)
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{
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if(isset($s->$p))
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if(property_exists($s, $p))
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{
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if(is_array($s->$p))
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{
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@ -640,12 +645,12 @@ function _getCoerceType($ctx, $property, $usedCtx)
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$rval = _expandTerm($ctx, $type, $usedCtx);
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if($usedCtx !== null)
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{
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if(!isset($usedCtx->{'@coerce'}))
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if(!property_exists($usedCtx, '@coerce'))
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{
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$usedCtx->{'@coerce'} = new stdClass();
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}
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if(!isset($usedCtx->{'@coerce'}->$type))
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if(!property_exists($usedCtx->{'@coerce'}, $type))
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{
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$usedCtx->{'@coerce'}->$type = $p;
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}
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@ -699,7 +704,7 @@ function _compact($ctx, $property, $value, $usedCtx)
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// graph literal/disjoint graph
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else if(
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is_object($value) and
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isset($value->{__S}) and is_array($value->{__S}))
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property_exists($value, __S) and is_array($value->{__S}))
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{
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$rval = new stdClass();
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$rval->{__S} = _compact($ctx, $property, $value->{__S}, $usedCtx);
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@ -707,7 +712,8 @@ function _compact($ctx, $property, $value, $usedCtx)
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// value has sub-properties if it doesn't define a literal or IRI value
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else if(
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is_object($value) and
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!isset($value->{'@literal'}) and !isset($value->{'@iri'}))
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!property_exists($value, '@literal') and
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!property_exists($value, '@iri'))
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{
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// recursively handle sub-properties that aren't a sub-context
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$rval = new stdClass();
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@ -732,15 +738,15 @@ function _compact($ctx, $property, $value, $usedCtx)
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if(is_object($value))
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{
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// type coercion can only occur if language is not specified
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if(!isset($value->{'@language'}))
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if(!property_exists($value, '@language'))
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{
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// datatype must match coerce type if specified
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if(isset($value->{'@datatype'}))
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if(property_exists($value, '@datatype'))
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{
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$type = $value->{'@datatype'};
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}
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// datatype is IRI
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else if(isset($value->{'@iri'}))
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else if(property_exists($value, '@iri'))
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{
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$type = JSONLD_XSD_ANY_URI;
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}
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@ -787,11 +793,11 @@ function _compact($ctx, $property, $value, $usedCtx)
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{
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if(is_object($value))
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{
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if(isset($value->{'@iri'}))
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if(property_exists($value, '@iri'))
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{
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$rval = $value->{'@iri'};
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}
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else if(isset($value->{'@literal'}))
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else if(property_exists($value, '@literal'))
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{
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$rval = $value->{'@literal'};
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}
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@ -879,10 +885,11 @@ function _expand($ctx, $property, $value, $expandSubjects)
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else if(is_object($value))
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{
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// value has sub-properties if it doesn't define a literal or IRI value
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if(!(isset($value->{'@literal'}) or isset($value->{'@iri'})))
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if(!(property_exists($value, '@literal') or
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property_exists($value, '@iri')))
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{
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// if value has a context, use it
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if(isset($value->{'@context'}))
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if(property_exists($value, '@context'))
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{
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$ctx = jsonld_merge_contexts($ctx, $value->{'@context'});
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}
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@ -892,7 +899,8 @@ function _expand($ctx, $property, $value, $expandSubjects)
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foreach($value as $key => $v)
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{
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// preserve frame keywords
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if($key === '@embed' or $key === '@explicit')
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if($key === '@embed' or $key === '@explicit' or
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$key === '@default' or $key === '@omitDefault')
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{
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_setProperty($rval, $key, _clone($v));
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}
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@ -981,8 +989,9 @@ function _isNamedBlankNode($v)
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{
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// look for "_:" at the beginning of the subject
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return (
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is_object($v) and isset($v->{__S}) and
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isset($v->{__S}->{'@iri'}) and _isBlankNodeIri($v->{__S}->{'@iri'}));
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is_object($v) and property_exists($v, __S) and
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property_exists($v->{__S}, '@iri') and
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_isBlankNodeIri($v->{__S}->{'@iri'}));
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}
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function _isBlankNode($v)
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@ -990,8 +999,8 @@ function _isBlankNode($v)
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// look for no subject or named blank node
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return (
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is_object($v) and
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!(isset($v->{'@iri'}) or isset($v->{'@literal'})) and
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(!isset($v->{__S}) or _isNamedBlankNode($v)));
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!(property_exists($v, '@iri') or property_exists($v, '@literal')) and
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(!property_exists($v, __S) or _isNamedBlankNode($v)));
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}
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/**
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@ -1036,9 +1045,9 @@ function _compare($v1, $v2)
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function _compareObjectKeys($o1, $o2, $key)
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{
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$rval = 0;
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if(isset($o1->$key))
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if(property_exists($o1, $key))
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{
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if(isset($o2->$key))
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if(property_exists($o2, $key))
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{
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$rval = _compare($o1->$key, $o2->$key);
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}
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@ -1047,7 +1056,7 @@ function _compareObjectKeys($o1, $o2, $key)
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$rval = -1;
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}
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}
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else if(isset($o2->$key))
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else if(property_exists($o2, $key))
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{
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$rval = 1;
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}
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@ -1086,7 +1095,7 @@ function _compareObjects($o1, $o2)
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$rval = _compareObjectKeys($o1, $o2, '@literal');
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if($rval === 0)
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{
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if(isset($o1->{'@literal'}))
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if(property_exists($o1, '@literal'))
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{
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$rval = _compareObjectKeys($o1, $o2, '@datatype');
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if($rval === 0)
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@ -1115,7 +1124,7 @@ function _compareObjects($o1, $o2)
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function _filterBlankNodes($e)
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{
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return (is_string($e) or
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!(isset($e->{'@iri'}) and _isBlankNodeIri($e->{'@iri'})));
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!(property_exists($e, '@iri') and _isBlankNodeIri($e->{'@iri'})));
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}
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/**
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@ -1242,7 +1251,7 @@ function _collectSubjects($input, $subjects, $bnodes)
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}
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else if(is_object($input))
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{
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if(isset($input->{__S}))
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if(property_exists($input, __S))
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{
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// graph literal
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if(is_array($input->{__S}))
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@ -1281,7 +1290,7 @@ class DuplicateIriFilter
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public function filter($e)
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{
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return (is_object($e) and isset($e->{'@iri'}) and
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return (is_object($e) and property_exists($e, '@iri') and
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$e->{'@iri'} === $this->iri);
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}
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}
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@ -1311,7 +1320,7 @@ function _flatten($parent, $parentProperty, $value, $subjects)
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else if(is_object($value))
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{
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// graph literal/disjoint graph
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if(isset($value->{__S}) and is_array($value->{__S}))
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if(property_exists($value, __S) and is_array($value->{__S}))
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{
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// cannot flatten embedded graph literals
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if($parent !== null)
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@ -1326,7 +1335,9 @@ function _flatten($parent, $parentProperty, $value, $subjects)
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}
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}
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// already-expanded value
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else if(isset($value->{'@literal'}) or isset($value->{'@iri'}))
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else if(
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property_exists($value, '@literal') or
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property_exists($value, '@iri'))
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{
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$flattened = _clone($value);
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}
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@ -1334,7 +1345,7 @@ function _flatten($parent, $parentProperty, $value, $subjects)
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else
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{
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// create or fetch existing subject
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if(isset($subjects->{$value->{__S}->{'@iri'}}))
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if(property_exists($subjects, $value->{__S}->{'@iri'}))
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{
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// FIXME: __S might be a graph literal (as {})
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$subject = $subjects->{$value->{__S}->{'@iri'}};
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@ -1342,7 +1353,7 @@ function _flatten($parent, $parentProperty, $value, $subjects)
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else
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{
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$subject = new stdClass();
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if(isset($value->{__S}))
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if(property_exists($value, __S))
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{
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// FIXME: __S might be a graph literal (as {})
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$subjects->{$value->{__S}->{'@iri'}} = $subject;
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@ -1389,7 +1400,7 @@ function _flatten($parent, $parentProperty, $value, $subjects)
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// 'http://mypredicate': {'@subject': {'@iri': 'http://mysubject'}}
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// becomes
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// 'http://mypredicate': {'@iri': 'http://mysubject'}
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if(is_object($flattened) and isset($flattened->{__S}))
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if(is_object($flattened) and property_exists($flattened, __S))
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{
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$flattened = $flattened->{__S};
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}
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@ -1398,7 +1409,7 @@ function _flatten($parent, $parentProperty, $value, $subjects)
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{
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// do not add duplicate IRIs for the same property
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$duplicate = false;
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if(is_object($flattened) and isset($flattened->{'@iri'}))
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if(is_object($flattened) and property_exists($flattened, '@iri'))
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{
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$duplicate = count(array_filter(
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(array)$parent, array(
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@ -1460,7 +1471,7 @@ class MappingBuilder
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*/
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public function mapNode($iri)
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{
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if(!isset($this->mapping->$iri))
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if(!property_exists($this->mapping, $iri))
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{
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if(strpos($iri, '_:c14n') === 0)
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{
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@ -1640,10 +1651,10 @@ class JsonLdProcessor
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// uniquely name all unnamed bnodes
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foreach($bnodes as $i => $bnode)
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{
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if(!isset($bnode->{__S}))
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if(!property_exists($bnode, __S))
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{
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// generate names until one is unique
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while(isset($subjects->{$ng->next()}));
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while(property_exists($subjects, $ng->next()));
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$bnode->{__S} = new stdClass();
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$bnode->{__S}->{'@iri'} = $ng->current();
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$subjects->{$ng->current()} = $bnode;
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@ -1701,7 +1712,8 @@ class JsonLdProcessor
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for($n = 0; $n < $length; ++$n)
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{
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if(is_object($tmp[$n]) and
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isset($tmp[$n]->{'@iri'}) and $tmp[$n]->{'@iri'} === $old)
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property_exists($tmp[$n], '@iri') and
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$tmp[$n]->{'@iri'} === $old)
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{
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$tmp[$n]->{'@iri'} = $id;
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}
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@ -1775,7 +1787,7 @@ class JsonLdProcessor
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if($c14n->inNamespace($iri))
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{
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// generate names until one is unique
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while(isset($subjects->{$ngTmp->next()}));
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while(property_exists($subjects, $ngTmp->next()));
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$this->renameBlankNode($bnode, $ngTmp->current());
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$iri = $bnode->{__S}->{'@iri'};
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}
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@ -1814,7 +1826,8 @@ class JsonLdProcessor
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$renamed = array();
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foreach($keys as $i => $iriK)
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{
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if(!$c14n->inNamespace($iri) and isset($subjects->$iriK))
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if(!$c14n->inNamespace($iri) and
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property_exists($subjects, $iriK))
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{
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$this->renameBlankNode($subjects->$iriK, $c14n->next());
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$renamed[] = $iriK;
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@ -1868,7 +1881,7 @@ class JsonLdProcessor
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public function markSerializationDirty($iri, $changed, $dir)
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{
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$s = $this->serializations->$iri;
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if($s->$dir !== null and isset($s->$dir->m->$changed))
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if($s->$dir !== null and property_exists($s->$dir->m, $changed))
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{
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$s->$dir = null;
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}
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@ -1902,7 +1915,7 @@ class JsonLdProcessor
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{
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$rval .= '|';
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}
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if(is_object($obj) and isset($obj->{'@iri'}) and
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if(is_object($obj) and property_exists($obj, '@iri') and
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_isBlankNodeIri($obj->{'@iri'}))
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{
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$rval .= '_:';
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@ -1932,12 +1945,12 @@ class JsonLdProcessor
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$rval = '';
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foreach($keys as $k)
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{
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if(!isset($output->$k))
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if(!property_exists($output, $k))
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{
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break;
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}
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if(isset($done->$k))
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if(property_exists($done, $k))
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{
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// mark cycle
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$rval .= '_' . $k;
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@ -1950,7 +1963,7 @@ class JsonLdProcessor
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{
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$rval .= $s;
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$iri = $tmp->m->$s;
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if(isset($this->subjects->$iri))
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if(property_exists($this->subjects, $iri))
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{
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$b = $this->subjects->$iri;
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@ -2084,7 +2097,7 @@ class JsonLdProcessor
|
|||
public function serializeBlankNode($s, $iri, $mb, $dir)
|
||||
{
|
||||
// only do mapping if iri not already mapped
|
||||
if(!isset($mb->mapped->$iri))
|
||||
if(!property_exists($mb->mapped, $iri))
|
||||
{
|
||||
// iri now mapped
|
||||
$mb->mapped->$iri = true;
|
||||
|
|
@ -2099,7 +2112,7 @@ class JsonLdProcessor
|
|||
$notMapped = array();
|
||||
foreach($adjs as $adj)
|
||||
{
|
||||
if(isset($mb->mapping->{$adj->s}))
|
||||
if(property_exists($mb->mapping, $adj->s))
|
||||
{
|
||||
$mapped->{$mb->mapping->{$adj->s}} = $adj->s;
|
||||
}
|
||||
|
|
@ -2112,7 +2125,7 @@ class JsonLdProcessor
|
|||
// TODO: ensure this optimization does not alter canonical order
|
||||
|
||||
// if the current bnode already has a serialization, reuse it
|
||||
/*$hint = isset($this->serializations->$iri) ?
|
||||
/*$hint = property_exists($this->serializations, $iri) ?
|
||||
$this->serializations->$iri->$dir : null;
|
||||
if($hint !== null)
|
||||
{
|
||||
|
|
@ -2350,8 +2363,8 @@ class JsonLdProcessor
|
|||
$tmp = !is_array($object) ? array($object) : $object;
|
||||
foreach($tmp as $o)
|
||||
{
|
||||
if(is_object($o) and isset($o->{'@iri'}) and
|
||||
isset($this->subjects->{$o->{'@iri'}}))
|
||||
if(is_object($o) and property_exists($o, '@iri') and
|
||||
property_exists($this->subjects, $o->{'@iri'}))
|
||||
{
|
||||
$objIri = $o->{'@iri'};
|
||||
|
||||
|
|
@ -2401,9 +2414,9 @@ function _isType($input, $frame)
|
|||
|
||||
// check if type(s) are specified in frame and input
|
||||
$type = JSONLD_RDF_TYPE;
|
||||
if(isset($frame->{JSONLD_RDF_TYPE}) and
|
||||
is_object($input) and isset($input->{__S}) and
|
||||
isset($input->{JSONLD_RDF_TYPE}))
|
||||
if(property_exists($frame, JSONLD_RDF_TYPE) and
|
||||
is_object($input) and property_exists($input, __S) and
|
||||
property_exists($input, JSONLD_RDF_TYPE))
|
||||
{
|
||||
$tmp = is_array($input->{JSONLD_RDF_TYPE}) ?
|
||||
$input->{JSONLD_RDF_TYPE} : array($input->{JSONLD_RDF_TYPE});
|
||||
|
|
@ -2452,7 +2465,7 @@ function _isDuckType($input, $frame)
|
|||
$rval = false;
|
||||
|
||||
// frame must not have a specific type
|
||||
if(!isset($frame->{JSONLD_RDF_TYPE}))
|
||||
if(!property_exists($frame, JSONLD_RDF_TYPE))
|
||||
{
|
||||
// get frame properties that must exist on input
|
||||
$props = array_filter(array_keys((array)$frame), '_filterNonKeywords');
|
||||
|
|
@ -2462,12 +2475,12 @@ function _isDuckType($input, $frame)
|
|||
$rval = true;
|
||||
}
|
||||
// input must be a subject with all the given properties
|
||||
else if(is_object($input) and isset($input->{__S}))
|
||||
else if(is_object($input) and property_exists($input, __S))
|
||||
{
|
||||
$rval = true;
|
||||
foreach($props as $prop)
|
||||
{
|
||||
if(!isset($input->$prop))
|
||||
if(!property_exists($input, $prop))
|
||||
{
|
||||
$rval = false;
|
||||
break;
|
||||
|
|
@ -2531,8 +2544,8 @@ function _frame($subjects, $input, $frame, $embeds, $options)
|
|||
{
|
||||
// dereference input if it refers to a subject
|
||||
$next = $input[$n];
|
||||
if(is_object($next) and isset($next->{'@iri'}) and
|
||||
isset($subjects->{$next->{'@iri'}}))
|
||||
if(is_object($next) and property_exists($next, '@iri') and
|
||||
property_exists($subjects, $next->{'@iri'}))
|
||||
{
|
||||
$next = $subjects->{$next->{'@iri'}};
|
||||
}
|
||||
|
|
@ -2556,19 +2569,19 @@ function _frame($subjects, $input, $frame, $embeds, $options)
|
|||
$frame = $frames[$i1];
|
||||
|
||||
// determine if value should be embedded or referenced
|
||||
$embedOn = isset($frame->{'@embed'}) ?
|
||||
$embedOn = property_exists($frame, '@embed') ?
|
||||
$frame->{'@embed'} : $options->defaults->embedOn;
|
||||
if(!$embedOn)
|
||||
{
|
||||
// if value is a subject, only use subject IRI as reference
|
||||
if(is_object($value) and isset($value->{__S}))
|
||||
if(is_object($value) and property_exists($value, __S))
|
||||
{
|
||||
$value = $value->{__S};
|
||||
}
|
||||
}
|
||||
else if(
|
||||
is_object($value) and isset($value->{__S}) and
|
||||
isset($embeds->{$value->{__S}->{'@iri'}}))
|
||||
is_object($value) and property_exists($value, __S) and
|
||||
property_exists($embeds, $value->{__S}->{'@iri'}))
|
||||
{
|
||||
// TODO: possibly support multiple embeds in the future ... and
|
||||
// instead only prevent cycles?
|
||||
|
|
@ -2577,19 +2590,19 @@ function _frame($subjects, $input, $frame, $embeds, $options)
|
|||
'subject=' . $value->{__S}->{'@iri'});
|
||||
}
|
||||
// if value is a subject, do embedding and subframing
|
||||
else if(is_object($value) and isset($value->{__S}))
|
||||
else if(is_object($value) and property_exists($value, __S))
|
||||
{
|
||||
$embeds->{$value->{__S}->{'@iri'}} = true;
|
||||
|
||||
// if explicit is on, remove keys from value that aren't in frame
|
||||
$explicitOn = isset($frame->{'@explicit'}) ?
|
||||
$explicitOn = property_exists($frame, '@explicit') ?
|
||||
$frame->{'@explicit'} : $options->defaults->explicitOn;
|
||||
if($explicitOn)
|
||||
{
|
||||
foreach($value as $key => $v)
|
||||
{
|
||||
// always include subject
|
||||
if($key !== __S and !isset($frame->$key))
|
||||
// do not remove subject or any key in the frame
|
||||
if($key !== __S and !property_exists($frame, $key))
|
||||
{
|
||||
unset($value->$key);
|
||||
}
|
||||
|
|
@ -2597,12 +2610,12 @@ function _frame($subjects, $input, $frame, $embeds, $options)
|
|||
}
|
||||
|
||||
// iterate over frame keys to do subframing
|
||||
foreach($frame as $key => $v)
|
||||
foreach($frame as $key => $f)
|
||||
{
|
||||
// skip keywords and type query
|
||||
if(strpos($key, '@') !== 0 and $key !== JSONLD_RDF_TYPE)
|
||||
{
|
||||
if(isset($value->$key))
|
||||
if(property_exists($value, $key))
|
||||
{
|
||||
// build input and do recursion
|
||||
$input = is_array($value->$key) ?
|
||||
|
|
@ -2612,20 +2625,67 @@ function _frame($subjects, $input, $frame, $embeds, $options)
|
|||
{
|
||||
// replace reference to subject w/subject
|
||||
if(is_object($input[$n]) and
|
||||
isset($input[$n]->{'@iri'}) and
|
||||
isset($subjects->{$input[$n]->{'@iri'}}))
|
||||
property_exists($input[$n], '@iri') and
|
||||
property_exists($subjects, $input[$n]->{'@iri'}))
|
||||
{
|
||||
$input[$n] = $subjects->{$input[$n]->{'@iri'}};
|
||||
}
|
||||
}
|
||||
$value->$key = _frame(
|
||||
$subjects, $input, $frame->$key, $embeds, $options);
|
||||
$subjects, $input, $f, $embeds, $options);
|
||||
}
|
||||
else
|
||||
{
|
||||
// add null property to value
|
||||
$value->$key = null;
|
||||
}
|
||||
|
||||
// handle setting default value(s)
|
||||
if(property_exists($value, $key))
|
||||
{
|
||||
// use first subframe if frame is an array
|
||||
if(is_array($f))
|
||||
{
|
||||
$f = (count($f) > 0) ? $f[0] : new stdClass();
|
||||
}
|
||||
|
||||
// determine if omit default is on
|
||||
$omitOn = property_exists($f, '@omitDefault') ?
|
||||
$f->{'@omitDefault'} :
|
||||
$options->defaults->omitDefaultOn;
|
||||
|
||||
if($value->$key === null)
|
||||
{
|
||||
if($omitOn)
|
||||
{
|
||||
unset($value->$key);
|
||||
}
|
||||
else if(property_exists($f, '@default'))
|
||||
{
|
||||
$value->$key = $f->{'@default'};
|
||||
}
|
||||
}
|
||||
else if(is_array($value->$key))
|
||||
{
|
||||
$tmp = array();
|
||||
foreach($value->$key as $v)
|
||||
{
|
||||
if($v === null)
|
||||
{
|
||||
if(!$omitOn)
|
||||
{
|
||||
$tmp[] = property_exists($f, '$default') ?
|
||||
$f->{'$default'} : null;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
$tmp[] = $v;
|
||||
}
|
||||
}
|
||||
$value->$key = $tmp;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue