Updated to use new framing algorithm.
This commit is contained in:
Dave Longley
parent
ec4110fe5c
commit
c8d381111b
265
jsonld.php
265
jsonld.php
|
|
@ -305,7 +305,8 @@ function jsonld_frame($input, $frame, $options=null)
|
||||||
}
|
}
|
||||||
|
|
||||||
// frame input
|
// frame input
|
||||||
$rval = _frame($subjects, $input, $frame, new stdClass(), $options);
|
$rval = _frame(
|
||||||
|
$subjects, $input, $frame, new stdClass(), false, null, null, $options);
|
||||||
|
|
||||||
// apply context
|
// apply context
|
||||||
if($ctx !== null and $rval !== null)
|
if($ctx !== null and $rval !== null)
|
||||||
|
|
@ -2558,6 +2559,163 @@ function _isDuckType($input, $frame)
|
||||||
return $rval;
|
return $rval;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Subframes a value.
|
||||||
|
*
|
||||||
|
* @param subjects a map of subjects in the graph.
|
||||||
|
* @param value the value to subframe.
|
||||||
|
* @param frame the frame to use.
|
||||||
|
* @param embeds a map of previously embedded subjects, used to prevent cycles.
|
||||||
|
* @param autoembed true if auto-embed is on, false if not.
|
||||||
|
* @param parent the parent object.
|
||||||
|
* @param parentKey the parent object.
|
||||||
|
* @param options the framing options.
|
||||||
|
*
|
||||||
|
* @return the framed input.
|
||||||
|
*/
|
||||||
|
function _subframe(
|
||||||
|
$subjects, $value, $frame, $embeds, $autoembed,
|
||||||
|
$parent, $parentKey, $options)
|
||||||
|
{
|
||||||
|
// get existing embed entry
|
||||||
|
$iri = $value->{'@subject'}->{'@iri'};
|
||||||
|
$embed = property_exists($embeds, $iri) ? $embeds->{$iri} : null;
|
||||||
|
|
||||||
|
// determine if value should be embedded or referenced,
|
||||||
|
// embed is ON if:
|
||||||
|
// 1. The frame OR default option specifies @embed as ON, AND
|
||||||
|
// 2. There is no existing embed OR it is an autoembed, AND
|
||||||
|
// autoembed mode is off.
|
||||||
|
$embedOn =
|
||||||
|
((property_exists($frame, '@embed') and $frame->{'@embed'}) or
|
||||||
|
$options->defaults->embedOn) and
|
||||||
|
($embed === null or ($embed->autoembed and !$autoembed));
|
||||||
|
|
||||||
|
if(!$embedOn)
|
||||||
|
{
|
||||||
|
// not embedding, so only use subject IRI as reference
|
||||||
|
$value = $value->{'@subject'};
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
// create new embed entry
|
||||||
|
if($embed === null)
|
||||||
|
{
|
||||||
|
$embed = new stdClass();
|
||||||
|
$embeds->{$iri} = $embed;
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
// replace the existing embed with a reference and update embed info
|
||||||
|
$embed->{$parent}->{$entry->key} = $value->{'@subject'};
|
||||||
|
}
|
||||||
|
|
||||||
|
// update embed entry
|
||||||
|
$embed->autoembed = $autoembed;
|
||||||
|
$embed->parent = $parent;
|
||||||
|
$embed->key = $parentKey;
|
||||||
|
|
||||||
|
// check explicit flag
|
||||||
|
$explicitOn = property_exists($frame, '@explicit') ?
|
||||||
|
$frame->{'@explicit'} : $options->defaults->explicitOn;
|
||||||
|
if($explicitOn)
|
||||||
|
{
|
||||||
|
// remove keys from the value that aren't in the frame
|
||||||
|
foreach($value as $key => $v)
|
||||||
|
{
|
||||||
|
// do not remove @subject or any frame key
|
||||||
|
if($key !== '@subject' and !property_exists($frame, $key))
|
||||||
|
{
|
||||||
|
unset($value->$key);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// iterate over keys in value
|
||||||
|
foreach($value as $key => $v)
|
||||||
|
{
|
||||||
|
// skip keywords and type
|
||||||
|
if(strpos($key, '@') !== 0 and $key !== JSONLD_RDF_TYPE)
|
||||||
|
{
|
||||||
|
// get the subframe if available
|
||||||
|
if(property_exists($frame, $key))
|
||||||
|
{
|
||||||
|
$f = $frame->{$key};
|
||||||
|
$_autoembed = false;
|
||||||
|
}
|
||||||
|
// use a catch-all subframe to preserve data from graph
|
||||||
|
else
|
||||||
|
{
|
||||||
|
$f = is_array($v) ? array() : new stdClass();
|
||||||
|
$_autoembed = true;
|
||||||
|
}
|
||||||
|
|
||||||
|
// build input and do recursion
|
||||||
|
$input = is_array($v) ? $v : array($v);
|
||||||
|
$length = count($input);
|
||||||
|
for($n = 0; $n < $length; ++$n)
|
||||||
|
{
|
||||||
|
// replace reference to subject w/subject
|
||||||
|
if(is_object($input[$n]) and
|
||||||
|
property_exists($input[$n], '@iri') and
|
||||||
|
property_exists($subjects, $input[$n]->{'@iri'}))
|
||||||
|
{
|
||||||
|
$input[$n] = $subjects->{$input[$n]->{'@iri'}};
|
||||||
|
}
|
||||||
|
}
|
||||||
|
$value->$key = _frame(
|
||||||
|
$subjects, $input, $f, $embeds, $_autoembed,
|
||||||
|
$value, $key, $options);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// iterate over frame keys to add any missing values
|
||||||
|
foreach($frame as $key => $f)
|
||||||
|
{
|
||||||
|
// skip keywords, type query, and keys in value
|
||||||
|
if(strpos($key, '@') !== 0 and $key !== JSONLD_RDF_TYPE and
|
||||||
|
!property_exists($value, $key))
|
||||||
|
{
|
||||||
|
// add empty array to value
|
||||||
|
if(is_array($f))
|
||||||
|
{
|
||||||
|
// add empty array/null property to value
|
||||||
|
$value->$key = array();
|
||||||
|
}
|
||||||
|
// add default value to value
|
||||||
|
else
|
||||||
|
{
|
||||||
|
// 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'} :
|
||||||
|
$options->defaults->omitDefaultOn;
|
||||||
|
if(!$omitOn)
|
||||||
|
{
|
||||||
|
if(property_exists($f, '@default'))
|
||||||
|
{
|
||||||
|
// use specified default value
|
||||||
|
$value->{$key} = $f->{'@default'};
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
// build-in default value is: null
|
||||||
|
$value->{$key} = null;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
return $value;
|
||||||
|
}
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* Recursively frames the given input according to the given frame.
|
* Recursively frames the given input according to the given frame.
|
||||||
*
|
*
|
||||||
|
|
@ -2565,11 +2723,16 @@ function _isDuckType($input, $frame)
|
||||||
* @param input the input to frame.
|
* @param input the input to frame.
|
||||||
* @param frame the frame to use.
|
* @param frame the frame to use.
|
||||||
* @param embeds a map of previously embedded subjects, used to prevent cycles.
|
* @param embeds a map of previously embedded subjects, used to prevent cycles.
|
||||||
|
* @param autoembed true if auto-embed is on, false if not.
|
||||||
|
* @param parent the parent object (for subframing), null for none.
|
||||||
|
* @param parentKey the parent key (for subframing), null for none.
|
||||||
* @param options the framing options.
|
* @param options the framing options.
|
||||||
*
|
*
|
||||||
* @return the framed input.
|
* @return the framed input.
|
||||||
*/
|
*/
|
||||||
function _frame($subjects, $input, $frame, $embeds, $options)
|
function _frame(
|
||||||
|
$subjects, $input, $frame, $embeds, $autoembed,
|
||||||
|
$parent, $parentKey, $options)
|
||||||
{
|
{
|
||||||
$rval = null;
|
$rval = null;
|
||||||
|
|
||||||
|
|
@ -2634,102 +2797,12 @@ function _frame($subjects, $input, $frame, $embeds, $options)
|
||||||
{
|
{
|
||||||
$frame = $frames[$i1];
|
$frame = $frames[$i1];
|
||||||
|
|
||||||
// determine if value should be embedded or referenced
|
// if value is a subject, do subframing
|
||||||
$embedOn = property_exists($frame, '@embed') ?
|
|
||||||
$frame->{'@embed'} : $options->defaults->embedOn;
|
|
||||||
if(!$embedOn)
|
|
||||||
{
|
|
||||||
// if value is a subject, only use subject IRI as reference
|
|
||||||
if(is_object($value) and property_exists($value, '@subject'))
|
if(is_object($value) and property_exists($value, '@subject'))
|
||||||
{
|
{
|
||||||
$value = $value->{'@subject'};
|
$value = _subframe(
|
||||||
}
|
$subjects, $value, $frame, $embeds, $autoembed,
|
||||||
}
|
$parent, $parentKey, $options);
|
||||||
else if(
|
|
||||||
is_object($value) and property_exists($value, '@subject') and
|
|
||||||
property_exists($embeds, $value->{'@subject'}->{'@iri'}))
|
|
||||||
{
|
|
||||||
// TODO: possibly support multiple embeds in the future ... and
|
|
||||||
// instead only prevent cycles?
|
|
||||||
throw new Exception(
|
|
||||||
'Multiple embeds of the same subject is not supported. ' .
|
|
||||||
'subject=' . $value->{'@subject'}->{'@iri'});
|
|
||||||
}
|
|
||||||
// if value is a subject, do embedding and subframing
|
|
||||||
else if(is_object($value) and property_exists($value, '@subject'))
|
|
||||||
{
|
|
||||||
$embeds->{$value->{'@subject'}->{'@iri'}} = true;
|
|
||||||
|
|
||||||
// if explicit is on, remove keys from value that aren't in frame
|
|
||||||
$explicitOn = property_exists($frame, '@explicit') ?
|
|
||||||
$frame->{'@explicit'} : $options->defaults->explicitOn;
|
|
||||||
if($explicitOn)
|
|
||||||
{
|
|
||||||
foreach($value as $key => $v)
|
|
||||||
{
|
|
||||||
// do not remove subject or any key in the frame
|
|
||||||
if($key !== '@subject' and !property_exists($frame, $key))
|
|
||||||
{
|
|
||||||
unset($value->$key);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
// iterate over frame keys to do subframing
|
|
||||||
foreach($frame as $key => $f)
|
|
||||||
{
|
|
||||||
// skip keywords and type query
|
|
||||||
if(strpos($key, '@') !== 0 and $key !== JSONLD_RDF_TYPE)
|
|
||||||
{
|
|
||||||
if(property_exists($value, $key))
|
|
||||||
{
|
|
||||||
// build input and do recursion
|
|
||||||
$input = is_array($value->$key) ?
|
|
||||||
$value->$key : array($value->$key);
|
|
||||||
$length = count($input);
|
|
||||||
for($n = 0; $n < $length; ++$n)
|
|
||||||
{
|
|
||||||
// replace reference to subject w/subject
|
|
||||||
if(is_object($input[$n]) and
|
|
||||||
property_exists($input[$n], '@iri') and
|
|
||||||
property_exists($subjects, $input[$n]->{'@iri'}))
|
|
||||||
{
|
|
||||||
$input[$n] = $subjects->{$input[$n]->{'@iri'}};
|
|
||||||
}
|
|
||||||
}
|
|
||||||
$value->$key = _frame(
|
|
||||||
$subjects, $input, $f, $embeds, $options);
|
|
||||||
}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
// add empty array/null property to value
|
|
||||||
$value->$key = is_array($f) ? array() : null;
|
|
||||||
}
|
|
||||||
|
|
||||||
// handle setting default value
|
|
||||||
if($value->$key === null)
|
|
||||||
{
|
|
||||||
// use first subframe if frame is an array
|
|
||||||
if(is_array($f))
|
|
||||||
{
|
|
||||||
$f = (count($f) > 0) ? $f[0] : new stdClass();
|
|
||||||
}
|
|
||||||
|
|
||||||
// determine if omit default is on
|
|
||||||
$omitOn = property_exists($f, '@omitDefault') ?
|
|
||||||
$f->{'@omitDefault'} :
|
|
||||||
$options->defaults->omitDefaultOn;
|
|
||||||
if($omitOn)
|
|
||||||
{
|
|
||||||
unset($value->$key);
|
|
||||||
}
|
|
||||||
else if(property_exists($f, '@default'))
|
|
||||||
{
|
|
||||||
$value->$key = $f->{'@default'};
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
}
|
||||||
|
|
||||||
// add value to output
|
// add value to output
|
||||||
|
|
|
||||||
Loading…
Reference in a new issue