Skip to content

Commit

Permalink
describing property-based indexing as a variant of data indexing
Browse files Browse the repository at this point in the history
  • Loading branch information
@pchampin
pchampin committed Mar 19, 2019
1 parent 69882e0 commit 2c8fa58
Showing 1 changed file with 191 additions and 2 deletions.
193 changes: 191 additions & 2 deletions index.html
View file
Original file line number Diff line number Diff line change
Expand Up @@ -6055,8 +6055,8 @@ <h3>Using the Document Base for the Default Vocabulary</h3>

<p>Databases are typically used to make access to
data more efficient. Developers often extend this sort of functionality into
their application data to deliver similar performance gains. Often this
data does not have any meaning from a Linked Data standpoint, but is
their application data to deliver similar performance gains.
This data may have no meaning from a Linked Data standpoint, but is
still useful for an application.</p>

<p>JSON-LD introduces the notion of <a>index maps</a>
Expand Down Expand Up @@ -6441,6 +6441,195 @@ <h3>Using the Document Base for the Default Vocabulary</h3>
-->
</pre>
</aside>

<section class="informative changed"><h3>Property-based data indexing</h3>
<p>In its simplest form (as in the examples above),
data indexing assigns no semantics to the keys of an <a>index map</a>.
However, in some situations,
the keys used to index objects are semantically linked to these objects,
and should be preserved not only syntactically, but also semantically.
</p>
<p>If the <a>processing mode</a> is set to <code>json-ld-1.1</code>,
<code>"@container": "@index"</code> in a term description can be accompanied with
an <code>"@index"</code> key. The value of that key must map to an <a>IRI</a>,
which identifies the semantic property linking each object to its key.
</p>
<aside class="example ds-selector-tabs"
title="Property-based data indexing">
<div class="selectors">
<button class="selected" data-selects="original">Original</button>
<button data-selects="expanded">Expanded</button>
<button data-selects="statements">Statements</button>
<button data-selects="turtle">Turtle</button>
<a class="playground" target="_blank"></a>
</div>
<pre class="original selected nohighlight" data-transform="updateExample">
<!--
{
"@context": {
"schema": "http://schema.org/",
"dc": "http://purl.org/dc/elements/1.1/",
"name": "schema:name",
"body": "schema:articleBody",
"words": "schema:wordCount",
"post": {
"@id": "schema:blogPost",
****"@container": "@index",
"@index": "dc:language"****
}
},
"@id": "http://example.com/",
"@type": "schema:Blog",
"name": "World Financial News",
"post": {
"en": {
"@id": "http://example.com/posts/1/en",
"body": "World commodities were up today with heavy trading of crude oil...",
"words": 1539
},
"de": {
"@id": "http://example.com/posts/1/de",
"body": "Die Werte an Warenbörsen stiegen im Sog eines starken Handels von Rohöl...",
"words": 1204
}
}
}
-->
</pre>
<pre class="expanded nohighlight"
data-transform="updateExample"
data-ignore
data-result-for="Property-based data indexing-original">
<!--
[{
"@id": "http://example.com/",
"@type": ["http://schema.org/Blog"],
"http://schema.org/name": [{"@value": "World Financial News"}],
"http://schema.org/blogPost": [{
"@id": "http://example.com/posts/1/en",
"http://schema.org/articleBody": [
{"@value": "World commodities were up today with heavy trading of crude oil..."}
],
"http://schema.org/wordCount": [
{"@value": 1539}
],
****"http://purl.org/dc/elements/1.1/language": "en"****
}, {
"@id": "http://example.com/posts/1/de",
"http://schema.org/articleBody": [
{"@value": "Die Werte an Warenbörsen stiegen im Sog eines starken Handels von Rohöl..."}
],
"http://schema.org/wordCount": [{"@value": 1204}],
****"http://purl.org/dc/elements/1.1/language": "de"****
}]
}]
-->
</pre>
<table class="statements"
data-ignore
data-result-for="Property-based data indexing-expanded"
data-to-rdf>
<thead><tr>
<th>Subject</th>
<th>Property</th>
<th>Value</th>
<th>Value Type</th>
</tr></thead>
<tbody>
<tr>
<td>http://example.com/</td>
<td>rdf:type</td>
<td>schema:Blog</td>
<td></td>
</tr>
<tr>
<td>http://example.com/</td>
<td>schema:name</td>
<td>World Financial News</td>
<td></td>
</tr>
<tr>
<td>http://example.com/</td>
<td>schema:blogPost</td>
<td>http://example.com/posts/1/de</td>
<td></td>
</tr>
<tr>
<td>http://example.com/</td>
<td>schema:blogPost</td>
<td>http://example.com/posts/1/en</td>
<td></td>
</tr>
<tr>
<td>http://example.com/posts/1/de</td>
<td>schema:articleBody</td>
<td>Die Werte an Warenbörsen stiegen im Sog eines starken Handels von Rohöl...</td>
<td></td>
</tr>
<tr>
<td>http://example.com/posts/1/de</td>
<td>schema:wordCount</td>
<td>1204</td>
<td>xsd:integer</td>
</tr>
<tr>
<td>http://example.com/posts/1/de</td>
<td>dc:language</td>
<td>de</td>
<td></td>
</tr>
<tr>
<td>http://example.com/posts/1/en</td>
<td>schema:articleBody</td>
<td>World commodities were up today with heavy trading of crude oil...</td>
<td></td>
</tr>
<tr>
<td>http://example.com/posts/1/en</td>
<td>schema:wordCount</td>
<td>1539</td>
<td>xsd:integer</td>
</tr>
<tr>
<td>http://example.com/posts/1/en</td>
<td>dc:language</td>
<td>en</td>
<td></td>
</tr>
</tbody>
</table>
<pre class="turtle nohighlight"
data-content-type="text/turtle"
data-ignore
data-result-for="Property-based data indexing-expanded"
data-transform="updateExample"
data-to-rdf>
<!--
@prefix schema: <http://schema.org/> .
@prefix dc: <http://purl.org/dc/elements/1.1/language> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
<http://example.com/> a schema:Blog;
schema:blogPost <http://example.com/posts/1/de>,
<http://example.com/posts/1/en>;
schema:name "World Financial News" .
<http://example.com/posts/1/de>
schema:articleBody
"Die Werte an Warenbörsen stiegen im Sog eines starken Handels von Rohöl...";
schema:wordCount 1204;
****dc:language "de"****.
<http://example.com/posts/1/en>
schema:articleBody
"World commodities were up today with heavy trading of crude oil...";
schema:wordCount 1539;
****dc:language "en"****.
-->
</pre>
</aside>
</section>

</section>
<section class="informative"><h2>Language Indexing</h2>

Expand Down

0 comments on commit 2c8fa58

Please sign in to comment.