Package com.github.fge.jsonschema.examples

Source Code of com.github.fge.jsonschema.examples.Example5

/*
* Copyright (c) 2014, Francis Galiegue (fgaliegue@gmail.com)
*
* This software is dual-licensed under:
*
* - the Lesser General Public License (LGPL) version 3.0 or, at your option, any
*   later version;
* - the Apache Software License (ASL) version 2.0.
*
* The text of both licenses is available under the src/resources/ directory of
* this project (under the names LGPL-3.0.txt and ASL-2.0.txt respectively).
*
* Direct link to the sources:
*
* - LGPL 3.0: https://www.gnu.org/licenses/lgpl-3.0.txt
* - ASL 2.0: http://www.apache.org/licenses/LICENSE-2.0.txt
*/

package com.github.fge.jsonschema.examples;

import com.fasterxml.jackson.databind.JsonNode;
import com.github.fge.jsonschema.core.exceptions.ProcessingException;
import com.github.fge.jsonschema.core.load.SchemaLoader;
import com.github.fge.jsonschema.core.load.configuration.LoadingConfiguration;
import com.github.fge.jsonschema.core.load.configuration.LoadingConfigurationBuilder;
import com.github.fge.jsonschema.core.load.uri.URITranslatorConfiguration;
import com.github.fge.jsonschema.core.report.ProcessingReport;
import com.github.fge.jsonschema.main.JsonSchema;
import com.github.fge.jsonschema.main.JsonSchemaFactory;
import com.github.fge.jsonschema.main.JsonSchemaFactoryBuilder;

import java.io.IOException;

/**
* Fifth example: setting a URI namespace; relative URI resolution
*
* <p><a href="doc-files/Example5.java">link to source code</a></p>
*
* <p>This example demonstrates another capability of {@link JsonSchemaFactory}:
* the ability to set a URI namespace. This requires to customize the factory,
* and therefore go through {@link JsonSchemaFactoryBuilder} again.</p>
*
* <p>In order to set a URI namespace, we must grab a {@link
* LoadingConfigurationBuilder}, set the namespace, freeze it, and pass it to
* the factory builder and then freeze the factory.</p>
*
* <p>The net effect is that all schema loading done by {@link SchemaLoader}
* will now resolve against this namespace, and this includes arguments to
* {@link JsonSchemaFactory#getJsonSchema(String)}.</p>
*
* <p>The schemas are split in two:</p>
*
* <ul>
*     <li>one describing fstab: <a href="doc-files/split/fstab.json">here</a>;
*     </li>
*     <li>another describing an entry: <a href="doc-files/split/mntent.json">
*     here</a>.</li>
* </ul>
*
* <p>The first refers to the second one via the relative URI {@code
* mntent.json}. This works precisely because a URI namespace has been set: all
* URIs are resolved against this namespace.</p>
*
* <p>Files validated, and the validation outputs, are the same as for {@link
* Example2}.</p>
*/
public final class Example5
{
    private static final String NAMESPACE
        = "resource:/com/github/fge/jsonschema/examples/split/";

    public static void main(final String... args)
        throws IOException, ProcessingException
    {
        final JsonNode good = Utils.loadResource("/fstab-good.json");
        final JsonNode bad = Utils.loadResource("/fstab-bad.json");
        final JsonNode bad2 = Utils.loadResource("/fstab-bad2.json");

        final URITranslatorConfiguration translatorCfg
            = URITranslatorConfiguration.newBuilder()
            .setNamespace(NAMESPACE).freeze();
        final LoadingConfiguration cfg = LoadingConfiguration.newBuilder()
            .setURITranslatorConfiguration(translatorCfg).freeze();

        final JsonSchemaFactory factory = JsonSchemaFactory.newBuilder()
            .setLoadingConfiguration(cfg).freeze();

        final JsonSchema schema = factory.getJsonSchema("fstab.json");

        ProcessingReport report;

        report = schema.validate(good);
        System.out.println(report);

        report = schema.validate(bad);
        System.out.println(report);

        report = schema.validate(bad2);
        System.out.println(report);
    }
}
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