schemaorg_apache_xmlbeans.src.graphml-structure.xsd Maven / Gradle / Ivy
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The schema corresponding to this document defines the structural
layer of the Graph Markup Language (GraphML).
Although a DTD is provided, this schema is, together with its extensions
http://graphml.graphdrawing.org/xmlns/1.0/graphml-attributes.xsd
and
http://graphml.graphdrawing.org/xmlns/1.0/graphml-parseinfo.xsd,
the only normative reference.
Get access to the xlink attribute groups for the attributes
xlink:href and xlink:type of locator.type.
The attribute groups <element_name>.extra.attrib may be used
for adding user defined attributes to the elements
<element_name>.
The attribute group common.extra.attrib may be used for adding
user defined attributes to all elements.
Complex type definitions for the GraphML structural layer elements:
<data>, <default>, <key>, <graphml>, <graph>,
<node>, <port>,
<edge>, <hyperedge>, <endpoint> and <locator>.
The names of the complex types are constructed corresponding
to the pattern element_name.type.
(The only remaining GraphML structural layer element
<desc> is of simple type xs:string.)
Extension mechanism for the content of <data> and <default>.
The complex type data-extension.type is empty per default.
Users may redefine this type in order to add content to
the complex types data.type and default.type which are
extensions of data-extension.type.
Complex type for the <data> element.
data.type is mixed, that is, <data> may contain #PCDATA.
Content type: extension of data-extension.type which is empty
per default.
refers to the id attribute of a <key>.
identifies this <data>.
user defined extra attributes for <data> elements
Complex type for the <default> element.
default.type is mixed, that is, data may contain #PCDATA.
Content type: extension of data-extension.type which is empty
per default.
user defined extra attributes for <default> elements
Simple type for the for attribute of <key>.
key.for.type is a restriction of xs:NMTOKEN
Allowed values: all, graphml, graph, node, edge, hyperedge, port and endpoint.
Complex type for the <key> element.
identifies this <key>.
describes the domain of definition for
the corresponding graph attribute.
user defined extra attributes for <key> elements.
Complex type for the <graphml> element.
user defined extra attributes for <graphml> elements.
Simple type for the edgedefault attribute of <graph>.
graph.edgedefault.type is a restriction of xs:NMTOKEN
Allowed values: directed, undirected.
Complex type for the <graph> element.
user defined extra attributes for <graph> elements.
identifies this graph .
describes whether edges of this graph are considered
as directed or undirected per default (unless
specified by the attribute directed of <edge>).
Complex type for the <node> element.
user defined extra attributes for <node elements.
identifies this node.
Complex type for the <port> element.
user defined extra attributes for <port> elements.
identifies this port, within the node it is contained in.
Complex type for the <edge> element.
user defined extra attributes for <edge> elements.
identifies this edge .
overwrites the edgedefault attribute of <graph> .
points to the id attribute of the source <node>.
points to the id attribute of the target <node>.
points to the name attribute of the source <port>.
points to the name attribute of the target <port>.
Complex type for the <hyperedge> element.
user defined extra attributes for <hyperedge> elements.
identifies this <hyperedge> .
Simple type for the type attribute of <endpoint>.
endpoint.type.type is a restriction of xs:NMTOKEN
Allowed values: in, out, undir.
Complex type for the <endpoint> element.
user defined extra attributes for <endpoint> elements.
identifies this <endpoint> .
points to the name of the port, to which this endpoint is
connected .
points to the id of the node, to which this endpoint is connected.
defines the direction on this endpoint (undirected per default).
Complex type for the <locator> element.
Content type: (empty)
user defined extra attributes for <locator> elements.
points to the resource of this locator.
type of the hyperlink (fixed as simple).
Description: Provides human-readable descriptions for the GraphML
element containing this <desc> as its first child.
Occurence: <key>, <graphml>, <graph>,
<node>, <port>, <edge>, <hyperedge>, and
<endpoint>.
Description: Graphs and nodes are declared by the elements
<graph> and <node>, respectively. The optional
<locator>-child of these elements point to
their definition. (If there is no <locator>-child
the graphs/nodes are defined by their content).
Occurence: <graph>, and <node>.
Description: In GraphML there may be data-functions attached
to graphs, nodes, ports, edges, hyperedges and
endpoint and to the whole collection of
graphs described by the content of <graphml>.
These functions are declared by <key> elements
(children of <graphml>) and defined by <data>
elements.
Occurence: <graphml>, <graph>, <node>, <port>,
<edge>, <hyperedge>, and <endpoint>.
Ensures: uniqueness of the key attributes of <data> children
of this <data> element.
Description: In GraphML there may be data-functions attached
to graphs, nodes, ports, edges, hyperedges and
endpoint and to the whole collection of
graphs described by the content of <graphml>.
These functions are declared by <key> elements
(children of <graphml>) and defined by <data>
elements.
Occurence: <graphml>.
Description: In GraphML there may be data-functions attached
to graphs, nodes, ports, edges, hyperedges and
endpoint and to the whole collection of
graphs described by the content of <graphml>.
These functions are declared by <key> elements
(children of <graphml>) and defined by <data>
elements.
The (optional) <default> child of <key> gives
the default value for the corresponding function.
Occurence: <key>.
Description: <graphml> is the root element of each GraphML
document.
Occurence: root.
Ensures: uniqueness of the key attributes of <data> children
of this <graphml> element.
Ensures: existence and uniqueness of the id attributes of
each <key> element in this document.
Ensures: uniqueness of the id attributes of
each <graph> element in this document.
Ensures: for the key attribute of each <data> in this document,
the existence of an id attribute of
<key> which matches the value of it.
Description: Describes one graph in this document.
Occurence: <graphml>, <node>, <edge>, <hyperedge>.
Ensures: uniqueness of the key attributes of <data> children
of this <graph> element.
Ensures: existence and uniqueness of the id attributes of
each <node> element in this graph.
Ensures: uniqueness of the id attributes of
each <edge> element in this graph.
Ensures: uniqueness of the id attributes of
each <hyperedge> element in this graph.
Ensures: uniqueness of the id attributes of
each <endpoint> element in this graph.
Ensures: for the source attribute of each <edge> in this graph,
the existence of an id attribute of
<node> which matches the value of it.
Ensures: for the target attribute of each <edge> in this graph,
the existence of an id attribute of
<node> which matches the value of it.
Ensures: for the node attribute of each <endpoint> in this graph,
the existence of an id attribute of
<node> which matches the value of it.
Description: Describes one node in the <graph>
containing this <node>.
Occurence: <graph>.
Ensures: existence and uniqueness of the name attributes of
each <port> element within this <node>.
Ensures: uniqueness of the key attributes of <data> children
of this <node> element.
Description: Nodes may be structured by ports; thus edges
are not only attached to a node but to a certain
port in this node.
Occurence: <node>, <port>.
Ensures: uniqueness of the key attributes of <data> children
of this <port> element.
Description: Describes an edge in the <graph> which contains this
<edge>.
Occurence: <graph>.
Ensures: uniqueness of the key attributes of <data> children
of this <edge> element.
Description: While edges describe relations between two nodes,
a hyperedge describes a relation between an arbitrary
number of nodes.
Occurence: <graph>.
Ensures: uniqueness of the key attributes of <data> children
of this <hyperedge> element.
Description: The list of <endpoints> within a hyperedge
points to the nodes contained in this hyperedge.
Occurence: <hyperedge>.
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