[
https://issues.apache.org/jira/browse/JENA-1391?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Adam Jacobs updated JENA-1391:
------------------------------
Description:
The Dataset interface could provide several convenience methods similar to the
Model interface, allowing usability of RDF quads on par with RDF triples.
Specific examples include,
# add(Dataset)
# remove(Dataset)
# union(Dataset)
# intersection(Dataset)
# difference(Dataset)
# isEmpty()
Following is a possible implementation of these methods.
{code:java}
default Dataset add(Dataset d) {
this.getDefaultModel().add(d.getDefaultModel());
d.listNames().forEachRemaining(name ->
this.getNamedModel(name).add(d.getNamedModel(name)));
return this;
}
default Dataset remove(Dataset d) {
this.getDefaultModel().remove(d.getDefaultModel());
d.listNames().forEachRemaining(name ->
this.getNamedModel(name).remove(d.getNamedModel(name)));
return this;
}
default Dataset union(Dataset d) {
return DatasetFactory.create().add(this).add(d);
}
default Dataset difference(Dataset d) {
Dataset output = DatasetFactory.create();
output.setDefaultModel(this.getDefaultModel().difference(d.getDefaultModel()));
this.listNames().forEachRemaining(name -> {
Model difference =
this.getNamedModel(name).difference(d.getNamedModel(name));
if (!difference.isEmpty()) output.addNamedModel(name, difference);
});
return output;
}
default Dataset intersection(Dataset d) {
Dataset output = DatasetFactory.create();
output.setDefaultModel(this.getDefaultModel().intersection(d.getDefaultModel()));
Set<String> names = this.names();
names.retainAll(d.names());
names.forEach(name -> {
Model intersection =
this.getNamedModel(name).intersection(d.getNamedModel(name));
if (!intersection.isEmpty()) output.addNamedModel(name,
intersection);
});
return output;
}
default Set<String> names() {
Set<String> names = new HashSet<>();
this.listNames().forEachRemaining(names::add);
return names;
}
default boolean isEmpty() {
return this.asDatasetGraph().isEmpty();
}
{code}
was:
The Dataset interface could provide several convenience methods similar to the
Model interface, allowing usability of RDF quads on par with RDF triples.
Specific examples include,
# add(Dataset)
# remove(Dataset)
# union(Dataset)
# intersection(Dataset)
# difference(Dataset)
# isEmpty()
Following is a possible implementation of these methods.
{code:java}
default Dataset add(Dataset d) {
this.getDefaultModel().add(d.getDefaultModel());
d.listNames().forEachRemaining(name ->
this.getNamedModel(name).add(d.getNamedModel(name)));
return this;
}
default Dataset remove(Dataset d) {
this.getDefaultModel().remove(d.getDefaultModel());
d.listNames().forEachRemaining(name ->
this.getNamedModel(name).remove(d.getNamedModel(name)));
return this;
}
default Dataset union(Dataset d) {
return DatasetFactory.create().add(this).add(d);
}
default Dataset difference(Dataset d) {
Dataset output = DatasetFactory.create();
output.setDefaultModel(this.getDefaultModel().difference(d.getDefaultModel()));
this.listNames().forEachRemaining(name -> {
Model difference =
this.getNamedModel(name).difference(d.getNamedModel(name));
if (!difference.isEmpty()) output.addNamedModel(name, difference);
});
return output;
}
default Dataset intersection(Dataset d) {
Dataset output = DatasetFactory.create();
output.setDefaultModel(this.getDefaultModel().intersection(d.getDefaultModel()));
Set<String> names = this.names();
names.retainAll(d.names());
names.forEach(name -> {
Model intersection =
this.getNamedModel(name).intersection(d.getNamedModel(name));
if (!intersection.isEmpty()) output.addNamedModel(name,
intersection);
});
return output;
}
default Set<String> names() {
Set<String> names = new HashSet<>();
this.listNames().forEachRemaining(names::add);
return names;
}
default boolean isEmpty() {
return !listNames().hasNext() && getDefaultModel().isEmpty();
}
{code}
> Add Convenience Methods to Dataset
> ----------------------------------
>
> Key: JENA-1391
> URL: https://issues.apache.org/jira/browse/JENA-1391
> Project: Apache Jena
> Issue Type: Improvement
> Components: ARQ
> Affects Versions: Jena 3.4.0
> Reporter: Adam Jacobs
> Priority: Trivial
>
> The Dataset interface could provide several convenience methods similar to
> the Model interface, allowing usability of RDF quads on par with RDF triples.
> Specific examples include,
> # add(Dataset)
> # remove(Dataset)
> # union(Dataset)
> # intersection(Dataset)
> # difference(Dataset)
> # isEmpty()
> Following is a possible implementation of these methods.
> {code:java}
> default Dataset add(Dataset d) {
> this.getDefaultModel().add(d.getDefaultModel());
> d.listNames().forEachRemaining(name ->
> this.getNamedModel(name).add(d.getNamedModel(name)));
> return this;
> }
> default Dataset remove(Dataset d) {
> this.getDefaultModel().remove(d.getDefaultModel());
> d.listNames().forEachRemaining(name ->
> this.getNamedModel(name).remove(d.getNamedModel(name)));
> return this;
> }
> default Dataset union(Dataset d) {
> return DatasetFactory.create().add(this).add(d);
> }
> default Dataset difference(Dataset d) {
> Dataset output = DatasetFactory.create();
>
> output.setDefaultModel(this.getDefaultModel().difference(d.getDefaultModel()));
> this.listNames().forEachRemaining(name -> {
> Model difference =
> this.getNamedModel(name).difference(d.getNamedModel(name));
> if (!difference.isEmpty()) output.addNamedModel(name, difference);
> });
> return output;
> }
> default Dataset intersection(Dataset d) {
> Dataset output = DatasetFactory.create();
>
> output.setDefaultModel(this.getDefaultModel().intersection(d.getDefaultModel()));
> Set<String> names = this.names();
> names.retainAll(d.names());
> names.forEach(name -> {
> Model intersection =
> this.getNamedModel(name).intersection(d.getNamedModel(name));
> if (!intersection.isEmpty()) output.addNamedModel(name,
> intersection);
> });
> return output;
> }
> default Set<String> names() {
> Set<String> names = new HashSet<>();
> this.listNames().forEachRemaining(names::add);
> return names;
> }
> default boolean isEmpty() {
> return this.asDatasetGraph().isEmpty();
> }
> {code}
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
