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package com.fasterxml.jackson.jaxrs.json.annotation;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
/* Note: applicable to annotations to allow bundling (if support added
* to JAX-RS bundle itself), as well as methods to indicate that return
* type is to be wrapped.
* Other types are not allowed, since there is no current usage for those;
* input can't be wrapped (so no need for parameters); fields are not
* exposed through JAX-RS; and we do not allow 'default wrapping' for
* types.
*
* Note on properties: if either {@link #prefix()} or {@link #suffix()}
* is non-empty, they are used as literal prefix and suffix to use.
* Otherwise {@link #value()} is used as the function name, followed
* by opening parenthesis, value, and closing parenthesis.
*
* Example usage:
*
* class Wrapper {
* @JSONP("myFunc") public int value = 3;
* }
*
* would serialize as:
*
* myFunc({"value":3})
*
* whereas
*
*
* class Wrapper {
* @JSONP(prefix="call(", suffix=")+3") public int value = 1;
* }
*
* would serialize as:
*
* call({"value":1})+3
*
*/
@Target({ElementType.ANNOTATION_TYPE, ElementType.METHOD })
@Retention(RetentionPolicy.RUNTIME)
@com.fasterxml.jackson.annotation.JacksonAnnotation
public @interface JSONP
{
/**
* Method used for JSONP, unless {@link #prefix()} or
* {@link #suffix()} return non-empty Strings.
*/
public String value() default "";
/**
* Prefix String used for JSONP if not empty: will be included
* verbatim before JSON value.
*/
public String prefix() default "";
/**
* Suffix String used for JSONP if not empty: will be included
* verbatim after JSON value.
*/
public String suffix() default "";
/**
* Helper class for encapsulating information from {@link JSONP}
* annotation instance.
*/
public static class Def {
public final String method;
public final String prefix;
public final String suffix;
public Def(String m) {
method = m;
prefix = null;
suffix = null;
}
public Def(JSONP json) {
method = emptyAsNull(json.value());
prefix = emptyAsNull(json.prefix());
suffix = emptyAsNull(json.suffix());
}
private final static String emptyAsNull(String str) {
if (str == null || str.length() == 0) {
return null;
}
return str;
}
}
}