com.github.fge.jsonschema.keyword.digest.AdditionalPropertiesDigester Maven / Gradle / Ivy

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/*
 * Copyright (c) 2013, Francis Galiegue 
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the Lesser GNU General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * Lesser GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see .
 */

package com.github.fge.jsonschema.keyword.digest;

import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.node.ArrayNode;
import com.fasterxml.jackson.databind.node.ObjectNode;
import com.github.fge.jsonschema.util.NodeType;
import com.google.common.collect.Lists;

import java.util.Collections;
import java.util.List;

public final class AdditionalPropertiesDigester
    extends AbstractDigester
{
    private static final Digester INSTANCE = new AdditionalPropertiesDigester();

    public static Digester getInstance()
    {
        return INSTANCE;
    }

    private AdditionalPropertiesDigester()
    {
        super("additionalProperties", NodeType.OBJECT);
    }

    @Override
    public JsonNode digest(final JsonNode schema)
    {
        final ObjectNode ret = FACTORY.objectNode();
        final ArrayNode properties = FACTORY.arrayNode();
        final ArrayNode patternProperties = FACTORY.arrayNode();

        /*
         * Start by presuming that additional properties are allowed. This will
         * not be the case if and only if it has boolean value false.
         */
        ret.put(keyword, true);
        ret.put("properties", properties);
        ret.put("patternProperties", patternProperties);

        if (schema.get(keyword).asBoolean(true))
            return ret;

        /*
         * OK, it is false... Therefore collect the list of defined property
         * names and regexes. Put them in order, we don't want to generate two
         * different digests for properties p, q and q, p.
         */
        ret.put(keyword, false);

        List list;

        list = Lists.newArrayList(schema.path("properties").fieldNames());
        Collections.sort(list);
        for (final String s: list)
            properties.add(s);

        list = Lists.newArrayList(schema.path("patternProperties")
            .fieldNames());
        Collections.sort(list);
        for (final String s: list)
            patternProperties.add(s);

        return ret;
    }
}