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editor
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editor
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<?xml version="1.0" encoding="UTF-8"?>
<rdf:RDF
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
xmlns:rdfe="http://redfoot.net/3.0/rdf#"
xmlns:owl="http://www.w3.org/2002/07/owl#"
xmlns:code="http://redfoot.net/3.0/code#"
xmlns:redfoot="http://redfoot.net/3.0/redfoot#"
xmlns:server="http://redfoot.net/3.0/server#"
xmlns:template="http://redfoot.net/3.0/template#"
xmlns:kid='http://redfoot.net/3.0/kid#'
xmlns:aspect="http://redfoot.net/3.0/aspect#"
>
<rdfe:Namespace rdf:about="#">
<rdfs:label>Editor</rdfs:label>
<rdfs:comment>The Redfoot editor namespace.</rdfs:comment>
</rdfe:Namespace>
<aspect:Aspect rdf:ID="aspect">
<rdfs:label>Editor</rdfs:label>
<aspect:item rdf:resource="#editor"/>
<aspect:item rdf:resource="#subjects"/>
<aspect:item rdf:resource="#assertions"/>
<aspect:item rdf:resource="#assert"/>
</aspect:Aspect>
<template:Section rdf:ID="editor">
<aspect:location>/editor/</aspect:location>
<rdfs:label>Editor</rdfs:label>
<rdfs:comment></rdfs:comment>
<rdfs:member rdf:resource="http://redfoot.net/3.0/comment#exclude"/>
<template:default_section_rank>55.0</template:default_section_rank>
<server:allow rdf:resource="#Admin"/>
<template:head_content>
<kid:PagePartHandler rdf:ID="editor_head">
<kid:template rdf:datatype="http://www.w3.org/2001/XMLSchema#string">
<![CDATA[
<div xmlns="http://www.w3.org/1999/xhtml" xmlns:kid="http://purl.org/kid/ns#" kid:strip="">
<link type="text/css" rel="stylesheet" href="http://yui.yahooapis.com/2.2.0/build/reset/reset.css"/>
<link type="text/css" rel="stylesheet" href="http://yui.yahooapis.com/2.2.0/build/fonts/fonts.css"/>
<!-- <link type="text/css" rel="stylesheet" href="./css/examples.css"/>-->
<script type="text/javascript">
${redfoot.value(URIRef("#json_script", base=__uri__), RDF.value)}
</script>
<style type="text/css">
#uriresult {position:relative; display:inline;}
#uriautocomplete {position:relative;width:25em;margin-bottom:1em;}/* set width of widget here*/
#uriautocomplete {z-index:9000} /* for IE z-index of absolute divs inside relative divs issue */
#uriinput { dipslay:none; _position:absolute;width:100%;height:1.4em;z-index:0;} /* abs for ie quirks */
#uricontainer {position:absolute;top:1.7em;width:100%}
#uricontainer .yui-ac-content {position:absolute;width:100%;border:1px solid #404040;background:#fff;overflow:hidden;z-index:9050;}
#uricontainer .yui-ac-shadow {position:absolute;margin:.3em;width:100%;background:#a0a0a0;z-index:9049;}
#uricontainer ul {padding:5px 0;width:100%;}
#uricontainer li {padding:0 5px;cursor:default;white-space:nowrap;}
#uricontainer li.yui-ac-highlight {background:#ff0;}
#uricontainer li.yui-ac-prehighlight {background:#FFFFCC;}
.resource {padding: 1em;}
.label {}
.uri { color: gray;} /* */
x.uri { position: absolute; top: 1em; left: 0em; width: 0%} /* */
x.uri { display: none;} /* */
.undefined:first-child { content: 'undefined';}
.type { display: none;}
.subject { display: inline;}
.subject .label {font-size: 2em;}
.subject .uri {font-size: 0.8em;}
.assertions {margin-left: 0em; padding-left: 0em;}
.assertion {display: block; padding-bottom: 1em; clear: both;}
.assertion .label {font-size: 1.2em;}
.assertion .uri {font-size: 0.6em;}
.predicate {display: inline; float: left; padding-left: 1em;}
.object {display: inline; float: left; padding-left: 1em;}
.assertion .action {display: inline; float: left;}
x.subject:before {content: 'Subject:';}
x.predicate:before {content: 'Predicate:';}
x.predicate:after {content: ':';}
x.object:before {content: 'Object:';}
#actions {margin-top: 1em; clear: both;}
</style>
</div>
]]>
</kid:template>
</kid:PagePartHandler>
</template:head_content>
<template:content>
<kid:PagePartHandler rdf:ID="Editor">
<kid:template rdf:datatype="http://www.w3.org/2001/XMLSchema#string">
<![CDATA[
<div xmlns="http://www.w3.org/1999/xhtml" xmlns:kid="http://purl.org/kid/ns#">
<div class="resource">
<div class="undefined"></div>
<div class="subject" onclick="resourceEditor.editSubject(this);">
<div class="type">URIRef</div>
<div class="label">Pick a Subject</div>
<div class="uri" onclick="resourceEditor.viewSubject(this);"></div>
</div>
<ul class="assertions"></ul>
<div id="actions">Actions: [ <span onclick="resourceEditor.addAssertion(this);">add assertion</span> ]</div>
<div id="grab_bag" style="display: none">
<div id="new_assertion">
<li class="assertion">
<div class="action"><span onclick="resourceEditor.cloneAssertion(this)">+</span> <span onclick="resourceEditor.removeAssertion(this)">-</span></div>
<div class="predicate" onclick="resourceEditor.edit(this);">
<div class="type">URIRef</div>
<div class="label">Pick Predicate</div>
<div class="uri"></div>
</div>
<div class="object" onclick="resourceEditor.edit(this);">
<div class="type">URIRef</div>
<div class="label">Pick Object</div>
<div class="uri"></div>
</div>
</li>
</div>
<form id="uriEditor" onsubmit="return resourceEditor.updateValue();">
<div id="uriautocomplete">
<input id="uriinput"></input>
<div id="uricontainer"></div>
</div>
</form>
<textarea id="textEditor" onblur="resourceEditor.updateValue();"></textarea>
</div>
</div>
<!-- Libary begins -->
<script type="text/javascript" src="http://yui.yahooapis.com/2.2.0/build/yahoo/yahoo-min.js"></script>
<script type="text/javascript" src="http://yui.yahooapis.com/2.2.0/build/dom/dom-min.js"></script>
<script type="text/javascript" src="http://yui.yahooapis.com/2.2.0/build/event/event-min.js"></script>
<script type="text/javascript" src="http://yui.yahooapis.com/2.2.0/build/animation/animation-min.js"></script>
<script type="text/javascript" src="http://yui.yahooapis.com/2.2.0/build/connection/connection-min.js"></script>
<script type="text/javascript" src="http://yui.yahooapis.com/2.2.0/build/autocomplete/autocomplete-min.js"></script>
<!--
<script type="text/javascript" src="/yui/build/yahoo/yahoo-debug.js"></script>
<script type="text/javascript" src="/yui/build/dom/dom-debug.js"></script>
<script type="text/javascript" src="/yui/build/event/event-debug.js"></script>
<script type="text/javascript" src="/yui/build/animation/animation-debug.js"></script>
<script type="text/javascript" src="/yui/build/connection/connection-debug.js"></script>
<script type="text/javascript" src="/yui/build/autocomplete/autocomplete-debug.js"></script>
-->
<!-- Library ends -->
<script type="text/javascript">
${redfoot.value(URIRef("#script", base=__uri__), RDF.value)}
</script>
</div>
]]>
</kid:template>
</kid:PagePartHandler>
</template:content>
</template:Section>
<rdf:Description rdf:ID="script">
<rdfs:label>Editor script</rdfs:label>
<rdf:value rdf:datatype="http://www.w3.org/2001/XMLSchema#string">
<![CDATA[
function Node(element) {
this._element = element;
}
Node.prototype._getValue = function(name) {
var e = (YAHOO.util.Dom.getElementsByClassName(name, null, this._element))[0];
return e.innerHTML;
}
Node.prototype._setValue = function(name, s) {
var e = (YAHOO.util.Dom.getElementsByClassName(name, null, this._element))[0];
e.innerHTML = s
}
Node.prototype.getData = function() {
element = this._element;
var type_element = (YAHOO.util.Dom.getElementsByClassName("type", null, element))[0];
var type = type_element.innerHTML;
var data;
if (type=="URIRef") {
var label_element = (YAHOO.util.Dom.getElementsByClassName("label", null, element))[0];
var uri_element = (YAHOO.util.Dom.getElementsByClassName("uri", null, element))[0];
data = {"type": type, "label": label_element.innerHTML, "uri": uri_element.innerHTML};
} else if (type=="BNode") {
var label_element = (YAHOO.util.Dom.getElementsByClassName("label", null, element))[0];
var bnode_element = (YAHOO.util.Dom.getElementsByClassName("bnode", null, element))[0];
data = {"type": type, "label": label_element.innerHTML, "bnode": bnode_element.innerHTML};
} else if (type=="Literal") {
var value_element = (YAHOO.util.Dom.getElementsByClassName("value", null, element))[0];
var datatype_element = (YAHOO.util.Dom.getElementsByClassName("datatype", null, element))[0];
var language_element = (YAHOO.util.Dom.getElementsByClassName("language", null, element))[0];
data = {"type": type, "value": value_element.innerHTML,
"datatype": datatype_element.innerHTML,
"language": language_element.innerHTML};
} else {
alert ("Unexpected type of: " + type)
}
return data;
}
Node.prototype.setData = function(data) {
var e = this._element
while (e.firstChild) {
e.removeChild(e.firstChild);
};
if (data["type"]=="URIRef") {
e.innerHTML = "<div class='type'>URIRef</div><div class='label'>"+ data["label"] + "</div><div class='uri' onclick='resourceEditor.viewSubject(this);'>" + data["uri"] + "</div>";
}
else if (data["type"]=="BNode") {
e.innerHTML = "<div class='type'>BNode</div><div class='label'>"+ data["label"] + "</div><div class='bnode'>" + data["bnode"] + "</div>";
}
else if (data["type"]=="Literal") {
e.innerHTML = "<div class='type'>Literal</div><pre class='value'>"+ data["value"] + "</pre><div class='datatype'>" + data["datatype"] + "</div><div class='language'>" + data["language"] + "</div>";
} else {
alert ("Unexpected type of:" + data["type"]);
}
}
// TODO: 'subclass'?
/* TODO: turn uri and label into properties: http://www.webfx.nu/dhtml/mozInnerHTML/mozInnerHtml.html */
Node.prototype.getURI = function() {
return this._getValue("uri")
}
Node.prototype.setURI = function(uri) {
var data = {"type": "URIRef", "uri": uri, "label": this.getLabel()};
this.setData(data)
//return this._setValue("uri", uri)
}
Node.prototype.getLabel = function() {
return this._getValue("label")
}
Node.prototype.setLabel = function(label) {
return this._setValue("label", label)
}
function Assertion(element) {
this._element = element;
}
Assertion.prototype.setData = function(data) {
element = this._element;
predicate_element = (YAHOO.util.Dom.getElementsByClassName("predicate", null, element))[0];
var p = new Node(predicate_element);
p.setData(data["predicate"])
object_element = (YAHOO.util.Dom.getElementsByClassName("object", null, element))[0];
var n = new Node(object_element);
n.setData(data["object"]);
}
function URIEditor(resourceEditor) {
this.resourceEditor = resourceEditor
var uriEditor = this;
YAHOO.widget.AutoComplete.prototype._origUpdateValue = YAHOO.widget.AutoComplete.prototype._updateValue
YAHOO.widget.AutoComplete.prototype._updateValue = function(oItem) {
uriEditor.target.setLabel(oItem._oResultData[0]);
uriEditor.target.setURI(oItem._oResultData[1]);
this._origUpdateValue(oItem);
}
}
URIEditor.prototype.init = function() {
// Instantiate second AutoComplete
var oACDS;
// Instantiate second JS Array DataSource
//oACDS = new YAHOO.widget.DS_JSArray(subjectsArray);
oACDS = new YAHOO.widget.DS_XHR("/subjects/", ["Result", "label","uri"]);
oACDS.queryMatchContains = true;
this.oAutoComp = new YAHOO.widget.AutoComplete('uriinput','uricontainer', oACDS);
this.oAutoComp.minQueryLength = 2;
this.oAutoComp.queryDelay = 0.5;
this.oAutoComp.prehighlightClassName = "yui-ac-prehighlight";
this.oAutoComp.typeAhead = false;
this.oAutoComp.allowBrowserAutocomplete = false;
this.oAutoComp.useShadow = true;
this.oAutoComp.forceSelection = false;
this.oAutoComp.autoHighlight = false;
this.oAutoComp.maxResultsDisplayed = 20;
this.oAutoComp.formatResult = function(oResultItem, sQuery) {
var sMarkup = oResultItem[0] + " (" + oResultItem[1] + ")";
return (sMarkup);
};
var uriEditor = this;
this.oAutoComp.textboxBlurEvent.subscribe(function(type, args, me) {uriEditor.doneEditing()});
var form = document.getElementById("uriEditor");
this.form = form;
this.form.parentNode.removeChild(this.form);
this.text_box = document.getElementById("textEditor");
}
URIEditor.prototype.edit = function(element) {
target = new Node(element);
var data = target.getData();
if (data["type"]=="URIRef") {
target.setURI(""); // TODO
this.target = target;
var container = target._element.parentNode;
this.form.className = target._element.className;
container.replaceChild(this.form, target._element)
//container.insertBefore(this.form, target._element);
//this.form.style.display = '';// TODO: do this via className
//target._element.style.display = 'none';
this.oAutoComp._oTextbox.value = target.getLabel();
//this.oAutoComp._oTextbox.value = data["label"];
this.oAutoComp._oTextbox.select();
this.oAutoComp._oTextbox.focus();
} else if (data["type"]=="Literal") {
this.text_box.value = data["value"];
this.target = target;
var container = target._element.parentNode;
this.form.className = target._element.className;
container.replaceChild(this.text_box, target._element)
//this.text_box.value = "the value";
this.text_box.select();
this.text_box.focus();
} else {
alert("Unexpected type: ", data["type"]);
}
return false;
}
URIEditor.prototype.doneEditing = function() {
var editor;
var data = this.target.getData();
if (data["type"]=="URIRef") {
editor = this.form;
} else if (data["type"]=="Literal") {
editor = this.text_box;
} else {
alert("Unexpected type: ", data["type"]);
}
var container = editor.parentNode;
if (container) {
container.replaceChild(this.target._element, editor);
}
}
URIEditor.prototype.updateValue = function() {
var data = this.target.getData();
if (data["type"]=="URIRef") {
this.target.setLabel(this.oAutoComp._oTextbox.value);
// TODO:
this.oAutoComp._oTextbox.blur();
} else if (data["type"]=="Literal") {
this.target.setData({"type": "Literal", "value": this.text_box.value, "datatype": "", "language": ""});
} else {
alert("Unexpected type: ", data["type"]);
}
this.doneEditing();
return false;
}
function ResourceEditor() {
this.element = YAHOO.util.Dom.getElementsByClassName("resource", null, document.body)[0];
this.uriEditor = new URIEditor(this);
this.uriEditor.init();
}
ResourceEditor.prototype.getSubject = function() {
subject_element = (YAHOO.util.Dom.getElementsByClassName("subject", null, this.element))[0];
return new Node(subject_element).getData();
}
ResourceEditor.prototype.setSubject = function(label, uri) {
if (uri) {
this.addAssertions();
} else {
var value = "http://" + document.location.host + "/instances#" + encodeURIComponent(label.replace(/ /g, "_"));
var new_uri = window.prompt("create new resource with uri:", value);
subject_element = (YAHOO.util.Dom.getElementsByClassName("subject", null, this.element))[0];
var i = new Node(subject_element);
i.setURI(new_uri);
// TODO: support for literals, bnodes
// TODO: add callback to assert so we could have it call addAssertions
server.assert([["add", [{"type": "URIRef", "uri": new_uri}, {"type": "URIRef", "uri": "http://www.w3.org/2000/01/rdf-schema#label"}, {"type": "Literal", "value": label, datatype: "", language: ""}]]]);
this.addAssertions();
}
}
ResourceEditor.prototype.getPredicate = function(element) {
predicate_element = (YAHOO.util.Dom.getElementsByClassName("predicate", null, element))[0];
return new Node(predicate_element).getData();
}
ResourceEditor.prototype.getObject = function(element) {
object_element = (YAHOO.util.Dom.getElementsByClassName("object", null, element))[0];
return new Node(object_element).getData();
}
ResourceEditor.prototype.addAssertions = function() {
var resourceEditor = this;
var e = this.element;
while (e.className!='resource') {
e = e.parentNode;
}
var resource = e;
var assertions = resource.getElementsByTagName("ul")[0]; // TODO: make more robust
na = document.getElementById("new_assertion").getElementsByTagName("li")[0].cloneNode(true);
while (assertions.firstChild) {
assertions.removeChild(assertions.firstChild);
};
var handleSuccess = function(o) {
if(o.responseText !== undefined) {
v = o.responseText.parseJSON();
for (var i = 0; i < v.length; i++) {
resourceEditor.addAssertion(resourceEditor.element, v[i]);
}
//var tmp = document.createElement("div")
//tmp.innerHTML = "<pre>" + o.responseText + "</pre>"
//assertions.appendChild(tmp)
//div.innerHTML = "<li>Transaction id: " + o.tId + "</li>";
//div.innerHTML += "<li>HTTP status: " + o.status + "</li>";
//div.innerHTML += "<li>Status code message: " + o.statusText + "</li>";
//div.innerHTML += "<li>HTTP headers: <ul>" + o.getAllResponseHeaders + "</ul></li>";
//div.innerHTML += "<li>Server response: " + o.responseText + "</li>";
//div.innerHTML += "<li>Argument object: Object ( [foo] => " + o.argument.foo +
//" [bar] => " + o.argument.bar +" )</li>";
}
}
var handleFailure = function(o){
if(o.responseText !== undefined) {
alert("failed to get assertions:" + o.status + " " + o.statusText);
//div.innerHTML = "<li>Transaction id: " + o.tId + "</li>";
//div.innerHTML += "<li>HTTP status: " + o.status + "</li>";
//div.innerHTML += "<li>Status code message: " + o.statusText + "</li>";
}
}
var callback =
{
success:handleSuccess,
failure: handleFailure,
argument: { foo:"foo", bar:"bar" }
};
var sUrl = "assertions/?subject=" + encodeURIComponent(this.getSubject().toJSONString());
var request = YAHOO.util.Connect.asyncRequest('GET', sUrl, callback);
}
ResourceEditor.prototype.addAssertion = function(me, data) {
var e = me; //why is this not me.target like for edit_link??
while (e.className!='resource') {
e = e.parentNode;
}
var resource = e;
var assertions = resource.getElementsByTagName("ul")[0]; // TODO: make more robust
na = document.getElementById("new_assertion").getElementsByTagName("li")[0].cloneNode(true);
a = new Assertion(na)
if (data) {
a.setData(data)
}
assertions.appendChild(na);
}
ResourceEditor.prototype.cloneAssertion = function(me) {
var e = me;
while (e.className!='assertion') {
e = e.parentNode;
}
var na = e.cloneNode(true);
var a = new Assertion(na);
a.setData({"predicate": this.getPredicate(e), "object": {"type": "URIRef", "label": "----", "uri": ""}});
var assertions = this.element.getElementsByTagName("ul")[0]; // TODO: make more robust
assertions.appendChild(na);
}
ResourceEditor.prototype.removeAssertion = function(element) {
while (element.className!='assertion') {
element = element.parentNode;
}
var statement = [this.getSubject(),
this.getPredicate(element),
this.getObject(element)];
var cb = function() {
element.parentNode.removeChild(element);
}
server.assert([["remove", statement]], cb);
}
ResourceEditor.prototype.editSubject = function(element) {
this.currentStatement = null;
var result = this.uriEditor.edit(element);
return result;
}
ResourceEditor.prototype.viewSubject = function(element) {
uri = element.innerHTML;
document.location = uri.replace("#", "/");
return false;
}
ResourceEditor.prototype.edit = function(element) {
this.currentStatement = [this.getSubject(),
this.getPredicate(element.parentNode),
this.getObject(element.parentNode)];
var result = this.uriEditor.edit(element);
return result;
}
/**
* Some value has changed. Figure out what statement we want to ask
* the server to add or what statement we want the server to modify.
*/
ResourceEditor.prototype.updateValue = function() {
result = this.uriEditor.updateValue();
var target = this.uriEditor.target;
var newStatement = null;
var which = target._element.className;
if (which=="subject") {
this.currentStatement = null;
this.setSubject(target.getLabel(), target.getURI());
} else if (which=="predicate") {
var s = this.getSubject();
var o = this.getObject(target._element.parentNode);
if (s && o) {
newStatement = [s, target.getData(), o];
}
} else if (which=="object") {
var s = this.getSubject();
var p = this.getPredicate(target._element.parentNode);
if (s && p) {
var o = target.getData();
if (o && o["uri"]) {
;
} else {
var label = target.getLabel();
var new_uri = "http://" + document.location.host + "/instances#" + encodeURIComponent(label.replace(/ /g, "_"));
target.setURI(new_uri);
}
newStatement = [s, p, o];
}
} else {
alert('me');
}
if (newStatement && newStatement[0]!='' && newStatement[1]!='' && newStatement[2]!='') {
currentStatement = this.currentStatement
if (currentStatement) {
if(newStatement[0]!=currentStatement[0] ||
newStatement[1]!=currentStatement[1] ||
newStatement[2]!=currentStatement[2]) {
server.assert([["remove", this.currentStatement], ["add", newStatement]]);
}
} else {
server.assert([["add", newStatement]]);
}
}
return result;
}
function Server() {
}
Server.prototype.assert = function(change, assert_callback) {
var handleSuccess = function(o) {
if(o.responseText !== undefined) {
}
if (assert_callback) {
assert_callback()
}
}
var handleFailure = function(o){
if(o.responseText !== undefined) {
alert("failed to send assertion to server: " + o.status + " " + o.statusText);
}
}
var callback =
{
success:handleSuccess,
failure: handleFailure,
argument: { assert_callback:assert_callback, bar:"bar" }
};
var sUrl = "assert/"
var postData = "change=" + change.toJSONString();
var request = YAHOO.util.Connect.asyncRequest('POST', sUrl, callback, postData);
}
server = new Server();
init = function() {
resourceEditor = new ResourceEditor();
// TODO: get value of uri query parameter and call resource.setResource
}
YAHOO.util.Event.addListener(this,'load',init);
]]>
</rdf:value>
</rdf:Description>
<server:Page rdf:ID="subjects">
<aspect:location>/subjects/</aspect:location>
<rdfs:label>Subjects</rdfs:label>
<server:allow rdf:resource="#Admin"/>
<rdfs:comment>Returns all the subject label uri pairs in JSON for the editor</rdfs:comment>
<rdfs:subClassOf rdf:resource="redfoot#Resource"/>
<server:supported_content_types>application/json</server:supported_content_types>
<server:page_handler>
<server:PageHandler rdf:ID="SubjectsPageHandler">
<rdfs:label>Subjects Page Handler</rdfs:label>
<server:content_type>application/json</server:content_type>
<code:python rdf:datatype="http://redfoot.net/3.0/redfoot#Python">
from rdflib import RDFS
import simplejson
query = request.parameters.get("query")
pairs = []
if query:
for s, p, o in redfoot.text_index.search(query, RDFS.label):
if o is not None: # bug workaround, I think. TODO: check if text_index is not being properly updated
pairs.append({"label": o, "uri": s})
#for s in set(redfoot.subjects(None, None)):
# label = redfoot.label(s)
# if label:
#pairs.append([label, s])
# pairs.append({"label": label, "uri": s})
response.write(simplejson.dumps({"Result": pairs}))
</code:python>
</server:PageHandler>
</server:page_handler>
</server:Page>
<server:Page rdf:ID="assertions">
<aspect:location>/editor/assertions/</aspect:location>
<rdfs:label>Assertions</rdfs:label>
<server:allow rdf:resource="#Admin"/>
<rdfs:comment>Returns all the subject label uri pairs in JSON for the editor</rdfs:comment>
<rdfs:subClassOf rdf:resource="redfoot#Resource"/>
<server:supported_content_types>application/json</server:supported_content_types>
<server:page_handler>
<server:PageHandler rdf:ID="AssertionsPageHandler">
<rdfs:label>Assertions Page Handler</rdfs:label>
<server:content_type>application/json</server:content_type>
<code:python rdf:datatype="http://redfoot.net/3.0/redfoot#Python">
# TODO: move this somewhere we can import it... we're already using it in two places.
def node(data):
if data["type"]=="URIRef":
return URIRef(data["uri"])
elif data["type"]=="BNode":
return BNode(data["bnode"])
elif data["type"]=="Literal":
datatype = data["datatype"] or None
language = data["language"] or None
return Literal(data["value"], lang=language, datatype=datatype)
else:
raise Exception("Unexpected type: '%s'" % data["type"])
from rdflib import RDFS
import simplejson
assertions = []
subject = request.parameters.get("subject")
if subject:
# TODO: support for BNodes
data = simplejson.loads(subject)
subject = node(data)
if (subject, RDF.type, None) not in redfoot:
redfoot.add((subject, RDF.type, RDFS.Resource))
initial_predicates = [RDFS.label, RDFS.comment, RDF.type]
remaining_predicates = []
for p in set(redfoot.predicates(subject, None)):
if p not in initial_predicates:
remaining_predicates.append((redfoot.label(p), p))
remaining_predicates.sort()
predicates = []
for p in initial_predicates:
predicates.append((redfoot.label(p), p))
predicates.extend(remaining_predicates)
for label, p in predicates:
for o in redfoot.objects(subject, p):
if isinstance(o, URIRef):
value = {"type": "URIRef", "label": redfoot.label(o), "uri": o}
elif isinstance(o, BNode):
value = {"type": "BNode", "label": redfoot.label(o), "bnode": o}
elif isinstance(o, Literal):
value = {"type": "Literal", "value": o, "datatype": o.datatype or "", "language": o.language or ""}
else:
raise Exception("unexpected type: %s" % type(o))
assertions.append({"predicate": {"type": "URIRef", "label": label, "uri": p},
"object": value})
response.write(simplejson.dumps(assertions))
</code:python>
</server:PageHandler>
</server:page_handler>
</server:Page>
<server:Page rdf:ID="assert">
<aspect:location>/editor/assert/</aspect:location>
<rdfs:label>Assert</rdfs:label>
<server:allow rdf:resource="#Admin"/>
<rdfs:comment>Returns all the subject label uri pairs in JSON for the editor</rdfs:comment>
<rdfs:subClassOf rdf:resource="redfoot#Resource"/>
<server:supported_content_types>application/json</server:supported_content_types>
<server:page_handler>
<server:PageHandler rdf:ID="AssertPageHandler">
<rdfs:label>Assert Page Handler</rdfs:label>
<server:content_type>application/json</server:content_type>
<code:python rdf:datatype="http://redfoot.net/3.0/redfoot#Python">
_logger = redfoot.getLogger(__uri__)
from rdflib import RDFS
from urllib import quote
import simplejson
assertions = []
change = request.parameters.get("change")
_logger.info("got change '%s'" % change)
def node(data):
_logger.info("data: '%s'" % repr(data))
if data["type"]=="URIRef":
if data["uri"]:
return URIRef(data["uri"])
else:
label = data["label"]
nuri = URIRef("%s/instances#%s" % (request.host, quote(label.replace(" ", "_"))))
_logger.info("coining: '%s'" % nuri)
redfoot.add((nuri, RDFS.label, Literal(data["label"])))
return nuri
elif data["type"]=="BNode":
return BNode(data["bnode"])
elif data["type"]=="Literal":
datatype = data["datatype"] or None
language = data["language"] or None
return Literal(data["value"], lang=language, datatype=datatype)
else:
raise Exception("Unexpected type: '%s'" % data["type"])
if change:
change = simplejson.loads(change)
for action, triple in change:
s, p, o = triple
s, p, o = node(s), node(p), node(o)
if action=="add":
redfoot.add((s, p, o))
elif action=="remove":
redfoot.remove((s, p, o))
else:
_logger.warning("Unknown action: '%s'" % action)
response.write("thank you for your support")
</code:python>
</server:PageHandler>
</server:page_handler>
</server:Page>
<rdf:Description rdf:ID="json_script">
<rdfs:label>json script</rdfs:label>
<rdf:value rdf:datatype="http://www.w3.org/2001/XMLSchema#string">
<![CDATA[
/*
json.js
2007-03-20
Public Domain
This file adds these methods to JavaScript:
array.toJSONString()
boolean.toJSONString()
date.toJSONString()
number.toJSONString()
object.toJSONString()
string.toJSONString()
These methods produce a JSON text from a JavaScript value.
It must not contain any cyclical references. Illegal values
will be excluded.
The default conversion for dates is to an ISO string. You can
add a toJSONString method to any date object to get a different
representation.
string.parseJSON(filter)
This method parses a JSON text to produce an object or
array. It can throw a SyntaxError exception.
The optional filter parameter is a function which can filter and
transform the results. It receives each of the keys and values, and
its return value is used instead of the original value. If it
returns what it received, then structure is not modified. If it
returns undefined then the member is deleted.
Example:
// Parse the text. If a key contains the string 'date' then
// convert the value to a date.
myData = text.parseJSON(function (key, value) {
return key.indexOf('date') >= 0 ? new Date(value) : value;
});
It is expected that these methods will formally become part of the
JavaScript Programming Language in the Fourth Edition of the
ECMAScript standard in 2008.
This file will break programs with improper for..in loops. See
http://yuiblog.com/blog/2006/09/26/for-in-intrigue/
This is a reference implementation. You are free to copy, modify, or
redistribute.
Use your own copy. It is extremely unwise to load untrusted third party
code into your pages.
*/
// Augment the basic prototypes if they have not already been augmented.
if (!Object.prototype.toJSONString) {
Array.prototype.toJSONString = function () {
var a = ['['], // The array holding the text fragments.
b, // A boolean indicating that a comma is required.
i, // Loop counter.
l = this.length,
v; // The value to be stringified.
function p(s) {
// p accumulates text fragments in an array. It inserts a comma before all
// except the first fragment.
if (b) {
a.push(',');
}
a.push(s);
b = true;
}
// For each value in this array...
for (i = 0; i < l; i += 1) {
v = this[i];
switch (typeof v) {
// Serialize a JavaScript object value. Ignore objects thats lack the
// toJSONString method. Due to a specification error in ECMAScript,
// typeof null is 'object', so watch out for that case.
case 'object':
if (v) {
if (typeof v.toJSONString === 'function') {
p(v.toJSONString());
}
} else {
p("null");
}
break;
// Otherwise, serialize the value.
case 'string':
case 'number':
case 'boolean':
p(v.toJSONString());
// Values without a JSON representation are ignored.
}
}
// Join all of the fragments together and return.
a.push(']');
return a.join('');
};
Boolean.prototype.toJSONString = function () {
return String(this);
};
Date.prototype.toJSONString = function () {
// Ultimately, this method will be equivalent to the date.toISOString method.
function f(n) {
// Format integers to have at least two digits.
return n < 10 ? '0' + n : n;
}
return '"' + this.getFullYear() + '-' +
f(this.getMonth() + 1) + '-' +
f(this.getDate()) + 'T' +
f(this.getHours()) + ':' +
f(this.getMinutes()) + ':' +
f(this.getSeconds()) + '"';
};
Number.prototype.toJSONString = function () {
// JSON numbers must be finite. Encode non-finite numbers as null.
return isFinite(this) ? String(this) : "null";
};
Object.prototype.toJSONString = function () {
var a = ['{'], // The array holding the text fragments.
b, // A boolean indicating that a comma is required.
k, // The current key.
v; // The current value.
function p(s) {
// p accumulates text fragment pairs in an array. It inserts a comma before all
// except the first fragment pair.
if (b) {
a.push(',');
}
a.push(k.toJSONString(), ':', s);
b = true;
}
// Iterate through all of the keys in the object, ignoring the proto chain.
for (k in this) {
if (this.hasOwnProperty(k)) {
v = this[k];
switch (typeof v) {
// Serialize a JavaScript object value. Ignore objects that lack the
// toJSONString method. Due to a specification error in ECMAScript,
// typeof null is 'object', so watch out for that case.
case 'object':
if (v) {
if (typeof v.toJSONString === 'function') {
p(v.toJSONString());
}
} else {
p("null");
}
break;
case 'string':
case 'number':
case 'boolean':
p(v.toJSONString());
// Values without a JSON representation are ignored.
}
}
}
// Join all of the fragments together and return.
a.push('}');
return a.join('');
};
(function (s) {