no.hasmac.jsonld.processor.FlatteningProcessor Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of hasmac-json-ld Show documentation
Show all versions of hasmac-json-ld Show documentation
A more performant JSON-LD 1.1 Processor & API forked from Titanium JSON-LD.
The newest version!
/*
* Copyright 2020 APICATALOG and HASMAC.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* SPDX-License-Identifier: Apache-2.0
*/
package no.hasmac.jsonld.processor;
import jakarta.json.JsonArray;
import jakarta.json.JsonStructure;
import no.hasmac.jsonld.JsonLdError;
import no.hasmac.jsonld.JsonLdErrorCode;
import no.hasmac.jsonld.JsonLdOptions;
import no.hasmac.jsonld.document.Document;
import no.hasmac.jsonld.document.JsonDocument;
import no.hasmac.jsonld.flattening.Flattening;
import no.hasmac.jsonld.http.media.MediaType;
import no.hasmac.jsonld.loader.DocumentLoaderOptions;
import java.net.URI;
/**
*
* @see JsonLdProcessor.compact()
*
*/
public final class FlatteningProcessor {
private FlatteningProcessor() {
}
public static JsonStructure flatten(final URI input, final URI context, final JsonLdOptions options) throws JsonLdError {
if (context == null) {
return flatten(input, (Document)null, options);
}
assertDocumentLoader(options, input);
final Document contextDocument = options.getDocumentLoader().loadDocument(context, new DocumentLoaderOptions());
if (contextDocument == null) {
throw new JsonLdError(JsonLdErrorCode.INVALID_REMOTE_CONTEXT, "Context[" + context + "] is null.");
}
return flatten(input, contextDocument, options);
}
public static JsonStructure flatten(final Document input, final URI context, final JsonLdOptions options) throws JsonLdError {
if (context == null) {
return flatten(input, (Document)null, options);
}
assertDocumentLoader(options, context);
final Document contextDocument = options.getDocumentLoader().loadDocument(context, new DocumentLoaderOptions());
if (contextDocument == null) {
throw new JsonLdError(JsonLdErrorCode.INVALID_REMOTE_CONTEXT, "Context[" + context + "] is null.");
}
return flatten(input, contextDocument, options);
}
public static JsonStructure flatten(final URI input, final Document context, final JsonLdOptions options) throws JsonLdError {
assertDocumentLoader(options, input);
final DocumentLoaderOptions loaderOptions = new DocumentLoaderOptions();
loaderOptions.setExtractAllScripts(options.isExtractAllScripts());
final Document remoteDocument = options.getDocumentLoader().loadDocument(input, loaderOptions);
if (remoteDocument == null) {
throw new JsonLdError(JsonLdErrorCode.LOADING_DOCUMENT_FAILED);
}
return flatten(remoteDocument, context, options);
}
public static JsonStructure flatten(final Document input, final Document context, final JsonLdOptions options) throws JsonLdError {
// 4.
final JsonLdOptions expansionOptions = new JsonLdOptions(options);
expansionOptions.setOrdered(false);
final JsonArray expandedInput = ExpansionProcessor.expand(input, expansionOptions, false);
// 5.
// 6.
JsonStructure flattenedOutput = Flattening.with(expandedInput).ordered(options.isOrdered()).flatten();
// 6.1.
if (context != null) {
final Document document = JsonDocument.of(MediaType.JSON_LD, flattenedOutput);
JsonLdOptions compactionOptions = new JsonLdOptions(options);
if (options.getBase() != null) {
compactionOptions.setBase(options.getBase());
} else if (options.isCompactArrays()) {
compactionOptions.setBase(input.getDocumentUrl());
}
flattenedOutput = CompactionProcessor.compact(document, context, compactionOptions);
}
return flattenedOutput;
}
private static void assertDocumentLoader(final JsonLdOptions options, final URI target) throws JsonLdError {
if (options.getDocumentLoader() == null) {
throw new JsonLdError(JsonLdErrorCode.LOADING_DOCUMENT_FAILED, "Document loader is null. Cannot fetch [" + target + "].");
}
}
}