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A Java implementation of the JSON Schema specification.

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package xpertss.json.schema.examples;

import com.fasterxml.jackson.databind.JsonNode;
import xpertss.json.schema.core.exceptions.ProcessingException;
import xpertss.json.schema.core.report.ProcessingReport;
import xpertss.json.schema.main.JsonSchema;
import xpertss.json.schema.main.JsonSchemaFactory;

import java.io.IOException;

/**
 * Fourth example: schema loading via URIs, and subschema addressing
 *
 * link to source code
 *
 * link to schema
 *
 * This demonstrates two capabilities of {@link JsonSchemaFactory}:
 *
 * 
 *     the ability to Utils.load schemas via URIs;
 *     the ability to address subschemas in a schema.
 * 
 *
 * The implementation provides a {@code resource} scheme which allows to Utils.load
 * JSON from files in the classpath. It is strictly equivalent to calling {@link
 * Class#getResourceAsStream(String)}.
 *
 * The URI used is {@code
 * resource:/org/eel/kitchen/jsonschema/examples/fstab-sub.json}. Because we
 * want to validate against the {@code fstab} subschema, we use {@link
 * JsonSchemaFactory#getJsonSchema(String)} to Utils.load the actual schema; the URI
 * used as an argument also has a JSON Pointer as a fragment.
 *
 * Files validated, and the validation outputs, are the same as for {@link
 * Example2}.
 */
public final class Example4
{
    private static final String SCHEMA_URI
        = "resource:/com/github/fge/jsonschema/examples/fstab-sub.json#/fstab";

    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 JsonSchemaFactory factory = JsonSchemaFactory.byDefault();

        final JsonSchema schema = factory.getJsonSchema(SCHEMA_URI);

        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);
    }
}