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A Java implementation of the JSON Schema specification
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/*
 * Copyright (c) 2014, Francis Galiegue ([email protected])
 *
 * 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 this file and of both licenses is available at the root of this
 * project or, if you have the jar distribution, in directory META-INF/, 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.library;

import com.github.fge.Frozen;
import com.github.fge.jsonschema.SchemaVersion;
import com.github.fge.jsonschema.cfg.ValidationConfigurationBuilder;
import com.github.fge.jsonschema.core.keyword.syntax.checkers.SyntaxChecker;
import com.github.fge.jsonschema.core.util.Dictionary;
import com.github.fge.jsonschema.format.FormatAttribute;
import com.github.fge.jsonschema.keyword.digest.Digester;
import com.github.fge.jsonschema.keyword.validator.KeywordValidatorFactory;

/**
 * A schema keyword library
 *
 * A library contains all keywords defined for a schema, but also all format
 * attributes.
 *
 * @see ValidationConfigurationBuilder#addLibrary(String, Library)
 * @see ValidationConfigurationBuilder#setDefaultLibrary(String, Library)
 * @see ValidationConfigurationBuilder#setDefaultVersion(SchemaVersion)
 */
public final class Library
    implements Frozen
{
    /**
     * Dictionary of syntax checkers
     */
    final Dictionary syntaxCheckers;

    /**
     * Dictionary of digesters
     */
    final Dictionary digesters;

    /**
     * Dictionary of keyword validator factories
     */
    final Dictionary validators;

    /**
     * Dictionary of format attributes
     */
    final Dictionary formatAttributes;

    /**
     * Create a new, empty library builder
     *
     * @return a {@link LibraryBuilder}
     */
    public static LibraryBuilder newBuilder()
    {
        return new LibraryBuilder();
    }

    /**
     * Constructor from a library builder
     *
     * @param builder the builder
     * @see LibraryBuilder#freeze()
     */
    Library(final LibraryBuilder builder)
    {
        syntaxCheckers = builder.syntaxCheckers.freeze();
        digesters = builder.digesters.freeze();
        validators = builder.validators.freeze();
        formatAttributes = builder.formatAttributes.freeze();
    }

    /**
     * Internal constructor, do not use!
     *
     * @param syntaxCheckers map of syntax checkers
     * @param digesters map of digesters
     * @param validators map of keyword validator constructors
     * @param formatAttributes map of format attributes
     */
    Library(final Dictionary syntaxCheckers,
        final Dictionary digesters,
        final Dictionary validators,
        final Dictionary formatAttributes)
    {
        this.syntaxCheckers = syntaxCheckers;
        this.digesters = digesters;
        this.validators = validators;
        this.formatAttributes = formatAttributes;
    }

    /**
     * Get the dictionary of syntax checkers
     *
     * @return a dictionary
     */
    public Dictionary getSyntaxCheckers()
    {
        return syntaxCheckers;
    }

    /**
     * Get the dictionary of digesters
     *
     * @return a dictionary
     */
    public Dictionary getDigesters()
    {
        return digesters;
    }

    /**
     * Get the dictionary of keyword validator constructors
     *
     * @return a dictionary
     */
    public Dictionary getValidators()
    {
        return validators;
    }

    /**
     * Get the dictionary of format attributes
     *
     * @return a dictionary
     */
    public Dictionary getFormatAttributes()
    {
        return formatAttributes;
    }

    /**
     * Create a mutable version of this library
     *
     * @return a {@link LibraryBuilder}
     * @see LibraryBuilder#LibraryBuilder(Library)
     */
    @Override
    public LibraryBuilder thaw()
    {
        return new LibraryBuilder(this);
    }
}