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package com.fasterxml.jackson.databind.annotation;

import java.lang.annotation.*;

/**
 * Annotation used to configure details of a Builder class:
 * instances of which are used as Builders for deserialized
 * POJO values, instead of POJOs being instantiated using
 * constructors or factory methods.
 * Note that this annotation is NOT used to define what is
 * the Builder class for a POJO: rather, this is determined
 * by {@link JsonDeserialize#builder} property of {@link JsonDeserialize}.
 *

* Annotation is typically used if the naming convention * of a Builder class is different from defaults: *

    *
  • By default, setters are expected to have names like `withName()` (for property "name"); * override by {@link #withPrefix()} property. *
  • *
*

* In addition to configuration using this annotation, note that many other configuration * annotations are also applied to Builders, for example * {@link com.fasterxml.jackson.annotation.JsonIgnoreProperties} can be used to ignore * "unknown" properties. * * @since 2.0 */ @Target({ElementType.ANNOTATION_TYPE, ElementType.TYPE}) @Retention(RetentionPolicy.RUNTIME) @com.fasterxml.jackson.annotation.JacksonAnnotation public @interface JsonPOJOBuilder { /** * @since 2.9 */ public final static String DEFAULT_BUILD_METHOD = "build"; /** * @since 2.9 */ public final static String DEFAULT_WITH_PREFIX = "with"; /** * Property to use for re-defining which zero-argument method * is considered the actual "build-method": method called after * all data has been bound, and the actual instance needs to * be instantiated. *

* Default value is "build". */ public String buildMethodName() default DEFAULT_BUILD_METHOD; /** * Property used for (re)defining name prefix to use for * auto-detecting "with-methods": methods that are similar to * "set-methods" (in that they take an argument), but that * may also return the new builder instance to use * (which may be 'this', or a new modified builder instance). * Note that in addition to this prefix, it is also possible * to use {@link com.fasterxml.jackson.annotation.JsonProperty} * annotation to indicate "with-methods" (as well as * {@link com.fasterxml.jackson.annotation.JsonSetter}). *

* Default value is "with", so that method named "withValue()" * would be used for binding JSON property "value" (using type * indicated by the argument; or one defined with annotations. */ public String withPrefix() default DEFAULT_WITH_PREFIX; /* /********************************************************** /* Helper classes /********************************************************** */ /** * Simple value container for containing values read from * {@link JsonPOJOBuilder} annotation instance. */ public class Value { public final String buildMethodName; public final String withPrefix; public Value(JsonPOJOBuilder ann) { this(ann.buildMethodName(), ann.withPrefix()); } public Value(String buildMethodName, String withPrefix) { this.buildMethodName = buildMethodName; this.withPrefix = withPrefix; } } }





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