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// *  http://www.apache.org/licenses/LICENSE-2.0                                                                             *
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// ***************************************************************************************************************************
package org.apache.juneau.json.annotation;

import static java.lang.annotation.ElementType.*;
import static java.lang.annotation.RetentionPolicy.*;

import java.lang.annotation.*;

import org.apache.juneau.annotation.*;
import org.apache.juneau.json.*;
import org.apache.juneau.serializer.*;

/**
 * Annotation for specifying config properties defined in {@link JsonSerializer} and {@link JsonParser}.
 *
 * <p>
 * Used primarily for specifying bean configuration properties on REST classes and methods.
 */
@Documented
@Target({TYPE,METHOD})
@Retention(RUNTIME)
@Inherited
@PropertyStoreApply(JsonConfigApply.class)
public @interface JsonConfig {

	/**
	 * Optional rank for this config.
	 *
	 * <p>
	 * Can be used to override default ordering and application of config annotations.
	 */
	int rank() default 0;

	//-------------------------------------------------------------------------------------------------------------------
	// JsonCommon
	//-------------------------------------------------------------------------------------------------------------------

	/**
	 * Dynamically applies {@link Json @Json} annotations to specified classes.
	 *
	 * <p>
	 * Provides an alternate approach for applying annotations using {@link Json#on() @Json.on} to specify the names
	 * to apply the annotation to.
	 *
	 * <ul class='seealso'>
	 * 	<li class='link'>{@doc juneau-marshall.DynamicallyAppliedAnnotations}
	 * </ul>
	 */
	Json[] applyJson() default {};

	//-------------------------------------------------------------------------------------------------------------------
	// JsonParser
	//-------------------------------------------------------------------------------------------------------------------

	/**
	 * Configuration property:  Validate end.
	 *
	 * <p>
	 * If <js>"true"</js>, after parsing a POJO from the input, verifies that the remaining input in
	 * the stream consists of only comments or whitespace.
	 *
	 * <ul class='notes'>
	 * 	<li>
	 * 		Possible values:
	 * 		<ul>
	 * 			<li><js>"true"</js>
	 * 			<li><js>"false"</js> (default)
	 * 		</ul>
	 * 	<li>
	 * 		Supports {@doc DefaultSvlVariables} (e.g. <js>"$C{myConfigVar}"</js>).
	 * 	<li>
	 * 		A default global value can be set via the system property <js>"JsonParser.validateEnd.b"</js>.
	 * </ul>
	 *
	 * <ul class='seealso'>
	 * 	<li class='jf'>{@link JsonParser#JSON_validateEnd}
	 * </ul>
	 */
	String validateEnd() default "";

	//-------------------------------------------------------------------------------------------------------------------
	// JsonSerializer
	//-------------------------------------------------------------------------------------------------------------------

	/**
	 * Configuration property:  Add <js>"_type"</js> properties when needed.
	 *
	 * <p>
	 * If <js>"true"</js>, then <js>"_type"</js> properties will be added to beans if their type cannot be inferred
	 * through reflection.
	 *
	 * <p>
	 * When present, this value overrides the {@link Serializer#SERIALIZER_addBeanTypes} setting and is
	 * provided to customize the behavior of specific serializers in a {@link SerializerGroup}.
	 *
	 * <ul class='notes'>
	 * 	<li>
	 * 		Possible values:
	 * 		<ul>
	 * 			<li><js>"true"</js>
	 * 			<li><js>"false"</js> (default)
	 * 		</ul>
	 * 	<li>
	 * 		Supports {@doc DefaultSvlVariables} (e.g. <js>"$C{myConfigVar}"</js>).
	 * 	<li>
	 * 		A default global value can be set via the system property <js>"JsonSerializer.addBeanTypes.b"</js>.
	 * </ul>
	 *
	 * <ul class='seealso'>
	 * 	<li class='jf'>{@link JsonSerializer#JSON_addBeanTypes}
	 * </ul>
	 */
	String addBeanTypes() default "";

	/**
	 * Configuration property:  Prefix solidus <js>'/'</js> characters with escapes.
	 *
	 * <p>
	 * If <js>"true"</js>, solidus (e.g. slash) characters should be escaped.
	 * The JSON specification allows for either format.
	 * <br>However, if you're embedding JSON in an HTML script tag, this setting prevents confusion when trying to serialize
	 * <xt>&lt;\/script&gt;</xt>.
	 *
	 * <ul class='notes'>
	 * 	<li>
	 * 		Possible values:
	 * 		<ul>
	 * 			<li><js>"true"</js>
	 * 			<li><js>"false"</js> (default)
	 * 		</ul>
	 * 	<li>
	 * 		Supports {@doc DefaultSvlVariables} (e.g. <js>"$C{myConfigVar}"</js>).
	 * 	<li>
	 * 		A default global value can be set via the system property <js>"JsonSerializer.escapeSolidus.b"</js>.
	 * </ul>
	 *
	 * <ul class='seealso'>
	 * 	<li class='jf'>{@link JsonSerializer#JSON_escapeSolidus}
	 * </ul>
	 */
	String escapeSolidus() default "";

	/**
	 * Configuration property:  Simple JSON mode.
	 *
	 * <p>
	 * If <js>"true"</js>, JSON attribute names will only be quoted when necessary.
	 * <br>Otherwise, they are always quoted.
	 *
	 * <p>
	 * Attributes do not need to be quoted when they conform to the following:
	 * <ol class='spaced-list'>
	 * 	<li>They start with an ASCII character or <js>'_'</js>.
	 * 	<li>They contain only ASCII characters or numbers or <js>'_'</js>.
	 * 	<li>They are not one of the following reserved words:
	 * 		<p class='bcode w800'>
	 * 	arguments, break, case, catch, class, const, continue, debugger, default,
	 * 	delete, do, else, enum, eval, export, extends, false, finally, for, function,
	 * 	if, implements, import, in, instanceof, interface, let, new, null, package,
	 * 	private, protected, public, return, static, super, switch, this, throw,
	 * 	true, try, typeof, var, void, while, with, undefined, yield
	 * 		</p>
	 * </ol>
	 *
	 * <ul class='notes'>
	 * 	<li>
	 * 		Possible values:
	 * 		<ul>
	 * 			<li><js>"true"</js>
	 * 			<li><js>"false"</js> (default)
	 * 		</ul>
	 * 	<li>
	 * 		Supports {@doc DefaultSvlVariables} (e.g. <js>"$C{myConfigVar}"</js>).
	 * 	<li>
	 * 		A default global value can be set via the system property <js>"JsonSerializer.simpleMode.b"</js>.
	 * </ul>
	 *
	 * <ul class='seealso'>
	 * 	<li class='jf'>{@link JsonSerializer#JSON_simpleMode}
	 * </ul>
	 */
	String simpleMode() default "";
}
