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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.main;

import com.github.fge.Thawed;
import com.github.fge.jsonschema.cfg.ValidationConfiguration;
import com.github.fge.jsonschema.core.load.configuration.LoadingConfiguration;
import com.github.fge.jsonschema.core.report.ListReportProvider;
import com.github.fge.jsonschema.core.report.LogLevel;
import com.github.fge.jsonschema.core.report.ReportProvider;
import com.github.fge.jsonschema.messages.JsonSchemaConfigurationBundle;
import com.github.fge.msgsimple.bundle.MessageBundle;
import com.github.fge.msgsimple.load.MessageBundles;

import javax.annotation.concurrent.NotThreadSafe;

/**
 * Thawed instance of a {@link JsonSchemaFactory}
 *
 * This is the class you will use to configure a schema factory before use,
 * should you need to. In most cases, the default factory will be enough.
 *
 * In order to obtain an instance of this builder class, use {@link
 * JsonSchemaFactory#newBuilder()}.
 *
 * @see JsonSchemaFactory#byDefault()
 * @see LoadingConfiguration
 * @see ValidationConfiguration
 * @see ReportProvider
 */
@NotThreadSafe
public final class JsonSchemaFactoryBuilder
    implements Thawed
{
    private static final MessageBundle BUNDLE
        = MessageBundles.getBundle(JsonSchemaConfigurationBundle.class);

    ReportProvider reportProvider;
    LoadingConfiguration loadingCfg;
    ValidationConfiguration validationCfg;

    /**
     * A builder with the default configuration
     *
     * @see JsonSchemaFactory#newBuilder()
     */
    JsonSchemaFactoryBuilder()
    {
        reportProvider = new ListReportProvider(LogLevel.INFO, LogLevel.FATAL);
        loadingCfg = LoadingConfiguration.byDefault();
        validationCfg = ValidationConfiguration.byDefault();
    }

    /**
     * A builder spawned from an existing {@link JsonSchemaFactory}
     *
     * @param factory the factory
     * @see JsonSchemaFactory#thaw()
     */
    JsonSchemaFactoryBuilder(final JsonSchemaFactory factory)
    {
        reportProvider = factory.reportProvider;
        loadingCfg = factory.loadingCfg;
        validationCfg = factory.validationCfg;
    }

    /**
     * Set a new report provider for this factory
     *
     * @param reportProvider the report provider
     * @return this
     * @throws NullPointerException provider is null
     */
    public JsonSchemaFactoryBuilder setReportProvider(
        final ReportProvider reportProvider)
    {
        BUNDLE.checkNotNull(reportProvider, "nullReportProvider");
        this.reportProvider = reportProvider;
        return this;
    }

    /**
     * Set a new loading configuration for this factory
     *
     * @param loadingCfg the loading configuration
     * @return this
     * @throws NullPointerException configuration is null
     */
    public JsonSchemaFactoryBuilder setLoadingConfiguration(
        final LoadingConfiguration loadingCfg)
    {
        BUNDLE.checkNotNull(loadingCfg, "nullLoadingCfg");
        this.loadingCfg = loadingCfg;
        return this;
    }

    /**
     * Set a new validation configuration for this factory
     *
     * @param validationCfg the validation configuration
     * @return this
     * @throws NullPointerException configuration is null
     */
    public JsonSchemaFactoryBuilder setValidationConfiguration(
        final ValidationConfiguration validationCfg)
    {
        BUNDLE.checkNotNull(validationCfg, "nullValidationCfg");
        this.validationCfg = validationCfg;
        return this;
    }

    /**
     * Build a frozen instance of this factory configuration
     *
     * @return a new {@link JsonSchemaFactory}
     * @see JsonSchemaFactory#JsonSchemaFactory(JsonSchemaFactoryBuilder)
     */
    @Override
    public JsonSchemaFactory freeze()
    {
        return new JsonSchemaFactory(this);
    }
}