com.fasterxml.jackson.databind.introspect.VisibilityChecker Maven / Gradle / Ivy
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package com.fasterxml.jackson.databind.introspect;
import java.lang.reflect.Field;
import java.lang.reflect.Member;
import java.lang.reflect.Method;
import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.annotation.JsonAutoDetect.Visibility;
/**
* Interface for object used for determine which property elements
* (methods, fields, constructors) can be auto-detected, with respect
* to their visibility modifiers.
*
* Note on type declaration: funky recursive type is necessary to
* support builder/fluent pattern.
*/
public interface VisibilityChecker>
{
// // Builder methods
/**
* Builder method that will return an instance that has same
* settings as this instance has, except for values that
* given annotation overrides.
*/
public T with(JsonAutoDetect ann);
/**
* Method that can be used for merging default values from `this`
* instance with specified overrides; and either return `this`
* if overrides had no effect (that is, result would be equal),
* or a new instance with merged visibility settings.
*
* @since 2.9
*/
public T withOverrides(JsonAutoDetect.Value vis);
/**
* Builder method that will create and return an instance that has specified
* {@link Visibility} value to use for all property elements.
* Typical usage would be something like:
*
* mapper.setVisibilityChecker(
* mapper.getVisibilityChecker().with(Visibility.NONE));
*
* (which would basically disable all auto-detection)
*/
public T with(Visibility v);
/**
* Builder method that will create and return an instance that has specified
* {@link Visibility} value to use for specified property.
* Typical usage would be:
*
* mapper.setVisibilityChecker(
* mapper.getVisibilityChecker().withVisibility(JsonMethod.FIELD, Visibility.ANY));
*
* (which would basically enable auto-detection for all member fields)
*/
public T withVisibility(PropertyAccessor method, Visibility v);
/**
* Builder method that will return a checker instance that has
* specified minimum visibility level for regular ("getXxx") getters.
*/
public T withGetterVisibility(Visibility v);
/**
* Builder method that will return a checker instance that has
* specified minimum visibility level for "is-getters" ("isXxx").
*/
public T withIsGetterVisibility(Visibility v);
/**
* Builder method that will return a checker instance that has
* specified minimum visibility level for setters.
*/
public T withSetterVisibility(Visibility v);
/**
* Builder method that will return a checker instance that has
* specified minimum visibility level for creator methods
* (constructors, factory methods)
*/
public T withCreatorVisibility(Visibility v);
/**
* Builder method that will return a checker instance that has
* specified minimum visibility level for fields.
*/
public T withFieldVisibility(Visibility v);
// // Accessors
/**
* Method for checking whether given method is auto-detectable
* as regular getter, with respect to its visibility (not considering
* method signature or name, just visibility)
*/
public boolean isGetterVisible(Method m);
public boolean isGetterVisible(AnnotatedMethod m);
/**
* Method for checking whether given method is auto-detectable
* as is-getter, with respect to its visibility (not considering
* method signature or name, just visibility)
*/
public boolean isIsGetterVisible(Method m);
public boolean isIsGetterVisible(AnnotatedMethod m);
/**
* Method for checking whether given method is auto-detectable
* as setter, with respect to its visibility (not considering
* method signature or name, just visibility)
*/
public boolean isSetterVisible(Method m);
public boolean isSetterVisible(AnnotatedMethod m);
/**
* Method for checking whether given method is auto-detectable
* as Creator, with respect to its visibility (not considering
* method signature or name, just visibility)
*/
public boolean isCreatorVisible(Member m);
public boolean isCreatorVisible(AnnotatedMember m);
/**
* Method for checking whether given field is auto-detectable
* as property, with respect to its visibility (not considering
* method signature or name, just visibility)
*/
public boolean isFieldVisible(Field f);
public boolean isFieldVisible(AnnotatedField f);
/*
/********************************************************
/* Standard implementation suitable for basic use
/********************************************************
*/
/**
* Default standard implementation is purely based on visibility
* modifier of given class members, and its configured minimum
* levels.
* Implemented using "builder" (or "Fluent") pattern, whereas instances
* are immutable, and configuration is achieved by chainable factory
* methods. As a result, type is declared is funky recursive generic
* type, to allow for sub-classing of build methods with property type
* co-variance.
*/
public static class Std
implements VisibilityChecker,
java.io.Serializable
{
private static final long serialVersionUID = 1;
/**
* This is the canonical base instance, configured with default
* visibility values
*/
protected final static Std DEFAULT = new Std(
Visibility.PUBLIC_ONLY, // getter
Visibility.PUBLIC_ONLY, // is-getter
Visibility.ANY, // setter
Visibility.ANY, // creator -- legacy, to support single-arg ctors
Visibility.PUBLIC_ONLY // field
);
protected final Visibility _getterMinLevel;
protected final Visibility _isGetterMinLevel;
protected final Visibility _setterMinLevel;
protected final Visibility _creatorMinLevel;
protected final Visibility _fieldMinLevel;
public static Std defaultInstance() { return DEFAULT; }
/**
* Constructor used for building instance that has minumum visibility
* levels as indicated by given annotation instance
*
* @param ann Annotations to use for determining minimum visibility levels
*/
public Std(JsonAutoDetect ann)
{
// let's combine checks for enabled/disabled, with minimum level checks:
_getterMinLevel = ann.getterVisibility();
_isGetterMinLevel = ann.isGetterVisibility();
_setterMinLevel = ann.setterVisibility();
_creatorMinLevel = ann.creatorVisibility();
_fieldMinLevel = ann.fieldVisibility();
}
/**
* Constructor that allows directly specifying minimum visibility levels to use
*/
public Std(Visibility getter, Visibility isGetter, Visibility setter,
Visibility creator, Visibility field)
{
_getterMinLevel = getter;
_isGetterMinLevel = isGetter;
_setterMinLevel = setter;
_creatorMinLevel = creator;
_fieldMinLevel = field;
}
/**
* Constructor that will assign given visibility value for all
* properties.
*
* @param v level to use for all property types
*/
public Std(Visibility v)
{
// typically we shouldn't get this value; but let's handle it if we do:
if (v == Visibility.DEFAULT) {
_getterMinLevel = DEFAULT._getterMinLevel;
_isGetterMinLevel = DEFAULT._isGetterMinLevel;
_setterMinLevel = DEFAULT._setterMinLevel;
_creatorMinLevel = DEFAULT._creatorMinLevel;
_fieldMinLevel = DEFAULT._fieldMinLevel;
} else {
_getterMinLevel = v;
_isGetterMinLevel = v;
_setterMinLevel = v;
_creatorMinLevel = v;
_fieldMinLevel = v;
}
}
/**
* @since 2.9
*/
public static Std construct(JsonAutoDetect.Value vis) {
return DEFAULT.withOverrides(vis);
}
/*
/********************************************************
/* Builder/fluent methods for instantiating configured
/* instances
/********************************************************
*/
protected Std _with(Visibility g, Visibility isG, Visibility s,
Visibility cr, Visibility f) {
if ((g == _getterMinLevel)
&& (isG == _isGetterMinLevel)
&& (s == _setterMinLevel)
&& (cr == _creatorMinLevel)
&& (f == _fieldMinLevel)
) {
return this;
}
return new Std(g, isG, s, cr, f);
}
@Override
public Std with(JsonAutoDetect ann)
{
Std curr = this;
if (ann != null) {
return _with(
_defaultOrOverride(_getterMinLevel, ann.getterVisibility()),
_defaultOrOverride(_isGetterMinLevel, ann.isGetterVisibility()),
_defaultOrOverride(_setterMinLevel, ann.setterVisibility()),
_defaultOrOverride(_creatorMinLevel, ann.creatorVisibility()),
_defaultOrOverride(_fieldMinLevel, ann.fieldVisibility())
);
}
return curr;
}
@Override // since 2.9
public Std withOverrides(JsonAutoDetect.Value vis)
{
Std curr = this;
if (vis != null) {
return _with(
_defaultOrOverride(_getterMinLevel, vis.getGetterVisibility()),
_defaultOrOverride(_isGetterMinLevel, vis.getIsGetterVisibility()),
_defaultOrOverride(_setterMinLevel, vis.getSetterVisibility()),
_defaultOrOverride(_creatorMinLevel, vis.getCreatorVisibility()),
_defaultOrOverride(_fieldMinLevel, vis.getFieldVisibility())
);
}
return curr;
}
private Visibility _defaultOrOverride(Visibility defaults, Visibility override) {
if (override == Visibility.DEFAULT) {
return defaults;
}
return override;
}
@Override
public Std with(Visibility v)
{
if (v == Visibility.DEFAULT) {
return DEFAULT;
}
return new Std(v);
}
@Override
public Std withVisibility(PropertyAccessor method, Visibility v)
{
switch (method) {
case GETTER:
return withGetterVisibility(v);
case SETTER:
return withSetterVisibility(v);
case CREATOR:
return withCreatorVisibility(v);
case FIELD:
return withFieldVisibility(v);
case IS_GETTER:
return withIsGetterVisibility(v);
case ALL:
return with(v);
//case NONE:
default:
// break;
return this;
}
}
@Override
public Std withGetterVisibility(Visibility v) {
if (v == Visibility.DEFAULT) v = DEFAULT._getterMinLevel;
if (_getterMinLevel == v) return this;
return new Std(v, _isGetterMinLevel, _setterMinLevel, _creatorMinLevel, _fieldMinLevel);
}
@Override
public Std withIsGetterVisibility(Visibility v) {
if (v == Visibility.DEFAULT) v = DEFAULT._isGetterMinLevel;
if (_isGetterMinLevel == v) return this;
return new Std(_getterMinLevel, v, _setterMinLevel, _creatorMinLevel, _fieldMinLevel);
}
@Override
public Std withSetterVisibility(Visibility v) {
if (v == Visibility.DEFAULT) v = DEFAULT._setterMinLevel;
if (_setterMinLevel == v) return this;
return new Std(_getterMinLevel, _isGetterMinLevel, v, _creatorMinLevel, _fieldMinLevel);
}
@Override
public Std withCreatorVisibility(Visibility v) {
if (v == Visibility.DEFAULT) v = DEFAULT._creatorMinLevel;
if (_creatorMinLevel == v) return this;
return new Std(_getterMinLevel, _isGetterMinLevel, _setterMinLevel, v, _fieldMinLevel);
}
@Override
public Std withFieldVisibility(Visibility v) {
if (v == Visibility.DEFAULT) v = DEFAULT._fieldMinLevel;
if (_fieldMinLevel == v) return this;
return new Std(_getterMinLevel, _isGetterMinLevel, _setterMinLevel, _creatorMinLevel, v);
}
/*
/********************************************************
/* Public API impl
/********************************************************
*/
@Override
public boolean isCreatorVisible(Member m) {
return _creatorMinLevel.isVisible(m);
}
@Override
public boolean isCreatorVisible(AnnotatedMember m) {
return isCreatorVisible(m.getMember());
}
@Override
public boolean isFieldVisible(Field f) {
return _fieldMinLevel.isVisible(f);
}
@Override
public boolean isFieldVisible(AnnotatedField f) {
return isFieldVisible(f.getAnnotated());
}
@Override
public boolean isGetterVisible(Method m) {
return _getterMinLevel.isVisible(m);
}
@Override
public boolean isGetterVisible(AnnotatedMethod m) {
return isGetterVisible(m.getAnnotated());
}
@Override
public boolean isIsGetterVisible(Method m) {
return _isGetterMinLevel.isVisible(m);
}
@Override
public boolean isIsGetterVisible(AnnotatedMethod m) {
return isIsGetterVisible(m.getAnnotated());
}
@Override
public boolean isSetterVisible(Method m) {
return _setterMinLevel.isVisible(m);
}
@Override
public boolean isSetterVisible(AnnotatedMethod m) {
return isSetterVisible(m.getAnnotated());
}
/*
/********************************************************
/* Standard methods
/********************************************************
*/
@Override
public String toString() {
return String.format("[Visibility: getter=%s,isGetter=%s,setter=%s,creator=%s,field=%s]",
_getterMinLevel, _isGetterMinLevel, _setterMinLevel, _creatorMinLevel, _fieldMinLevel);
}
}
}