com.jn.easyjson.jackson.ext.EasyJsonBeanDeserializerBuilder Maven / Gradle / Ivy
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package com.jn.easyjson.jackson.ext;
import com.fasterxml.jackson.core.Version;
import com.fasterxml.jackson.databind.*;
import com.fasterxml.jackson.databind.deser.BeanDeserializerBuilder;
import com.fasterxml.jackson.databind.deser.SettableBeanProperty;
import com.fasterxml.jackson.databind.deser.impl.BeanPropertyMap;
import com.fasterxml.jackson.databind.deser.impl.FieldProperty;
import com.fasterxml.jackson.databind.deser.impl.MethodProperty;
import com.fasterxml.jackson.databind.deser.impl.ObjectIdValueProperty;
import com.jn.easyjson.jackson.Jacksons;
import com.jn.easyjson.jackson.deserializer.CustomizedBeanDeserializer;
import com.jn.langx.util.jar.JarVersionMismatchedException;
import com.jn.langx.util.reflect.Reflects;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.Map;
/**
* @since 3.2.2
*/
public class EasyJsonBeanDeserializerBuilder extends BeanDeserializerBuilder {
private static final Logger logger = LoggerFactory.getLogger(EasyJsonBeanDeserializerBuilder.class);
/**
* @since 3.2.3
*/
private DeserializationConfig __config;
/**
* @since 3.2.3
*/
private DeserializationContext __context;
/**
* jackson.version >= 2.9.0 时有值
*
* @since 3.2.3
*/
private static final Field _config_field;
/**
* jackson.version >= 2.9.0 时有值
*
* @since 3.2.3
*/
private static final Field _context_field;
/**
* jackson.version >= 2.9.0 时有值
*
* @since 3.2.3
*/
private static final Method _collectAliases_method;
/**
* jackson.version >= 2.9.0 时有值
*
* @since 3.2.3
*/
private static final Method BeanPropertyMap_construct_3args_method;
static {
_config_field = Reflects.getDeclaredField(BeanDeserializerBuilder.class, "_config");
if (_config_field != null) {
_config_field.setAccessible(true);
}
_context_field = Reflects.getDeclaredField(BeanDeserializerBuilder.class, "_context");
if (_context_field != null) {
_context_field.setAccessible(true);
}
_collectAliases_method = Reflects.getDeclaredMethod(BeanDeserializerBuilder.class, "_collectAliases", new Class[]{Collection.class});
if (_collectAliases_method != null) {
_collectAliases_method.setAccessible(true);
}
BeanPropertyMap_construct_3args_method = Reflects.getDeclaredMethod(BeanPropertyMap.class, "construct", new Class[]{Collection.class, boolean.class, Map.class});
if (BeanPropertyMap_construct_3args_method != null) {
BeanPropertyMap_construct_3args_method.setAccessible(true);
}
}
public EasyJsonBeanDeserializerBuilder(BeanDescription beanDesc, DeserializationContext ctx) {
this(createBeanDeserializerBuilder(beanDesc, ctx));
setDeserializationContext(ctx);
setDeserializationConfig(ctx.getConfig());
}
/**
* jackson v2.9.0 +
* BeanDeserializerBuilder(BeanDescription beanDesc, DeserializationContext ctx)
*
*
* jackson v2.6.0 ~ v2.8.x
* BeanDeserializerBuilder(BeanDescription beanDesc, DeserializationConfig config)
*/
private static BeanDeserializerBuilder createBeanDeserializerBuilder(BeanDescription beanDesc, DeserializationContext ctx) {
BeanDeserializerBuilder builder = null;
boolean greatThan_version2_9_0 = Jacksons.getCurrentVersion().compareTo(new Version(2, 9, 0, null)) >= 0;
if (greatThan_version2_9_0) {
builder = Reflects.newInstance(BeanDeserializerBuilder.class, new Class[]{BeanDescription.class, DeserializationContext.class}, beanDesc, ctx);
} else {
builder = Reflects.newInstance(BeanDeserializerBuilder.class, new Class[]{BeanDescription.class, DeserializationConfig.class}, beanDesc, ctx.getConfig());
}
if (builder == null) {
logger.error("please check versions of the jackson libraries: jackson-core, jackson-databind");
throw new JarVersionMismatchedException("jackson-*");
}
return builder;
}
/**
* @since 3.2.3
*/
public EasyJsonBeanDeserializerBuilder(BeanDeserializerBuilder src) {
super(src);
}
/**
* @since 3.2.3
*/
private void setDeserializationConfig(DeserializationConfig config) {
this.__config = config;
if (_config_field != null) {
Reflects.setFieldValue(_config_field, this, this.__config, true, true);
}
}
/**
* @since 3.2.3
*/
private DeserializationConfig getDeserializationConfig() {
return this.__config;
}
/**
* @since 3.2.3
*/
private void setDeserializationContext(DeserializationContext context) {
this.__context = context;
if (_context_field != null) {
Reflects.setFieldValue(_context_field, this, this.__context, true, true);
}
}
/**
* @since 3.2.3
*/
private DeserializationContext getDeserializationContext() {
return this.__context;
}
/**
* @since 3.2.2
*/
@Override
public JsonDeserializer build() {
Collection props = _properties.values();
BeanPropertyMap propertyMap = createPropertyMap(props);
propertyMap.assignIndexes();
// view processing must be enabled if:
// (a) fields are not included by default (when deserializing with view), OR
// (b) one of properties has view(s) to included in defined
boolean anyViews = !getDeserializationConfig().isEnabled(MapperFeature.DEFAULT_VIEW_INCLUSION);
if (!anyViews) {
for (SettableBeanProperty prop : props) {
if (prop.hasViews()) {
anyViews = true;
break;
}
}
}
// one more thing: may need to create virtual ObjectId property:
if (_objectIdReader != null) {
/* 18-Nov-2012, tatu: May or may not have annotations for id property;
* but no easy access. But hard to see id property being optional,
* so let's consider required at this point.
*/
ObjectIdValueProperty prop = new ObjectIdValueProperty(_objectIdReader, PropertyMetadata.STD_REQUIRED);
propertyMap = propertyMap.withProperty(prop);
}
return new CustomizedBeanDeserializer(this,
_beanDesc, propertyMap, _backRefProperties, _ignorableProps, _ignoreAllUnknown,
anyViews);
}
/**
* @since 3.2.3
*/
private BeanPropertyMap createPropertyMap(Collection props) {
boolean caseInsensitive = getDeserializationConfig().isEnabled(MapperFeature.ACCEPT_CASE_INSENSITIVE_PROPERTIES);
if (BeanPropertyMap_construct_3args_method != null) {
return Reflects.invoke(BeanPropertyMap_construct_3args_method, null, new Object[]{props, caseInsensitive, constructBeanPropertyMap(props)}, true, true);
}
return BeanPropertyMap.construct(props, getDeserializationConfig().isEnabled(MapperFeature.ACCEPT_CASE_INSENSITIVE_PROPERTIES));
}
/**
* @since 3.2.3
*/
protected Map> constructBeanPropertyMap(Collection props) {
if (_collectAliases_method != null) {
return Reflects.>>invoke(_collectAliases_method, this, new Object[]{props}, true, true);
}
return Collections.emptyMap();
}
/**
* @param prop the property
* @since 3.2.5
*/
private void reflectInvokeSetAccessible(SettableBeanProperty prop) {
if (prop instanceof FieldProperty) {
FieldProperty fieldProperty = (FieldProperty) prop;
Field field = (Field) fieldProperty.getMember().getAnnotated();
if (__config.canOverrideAccessModifiers()) {
Jacksons.checkAndFixAccess(field, true);
}
} else if (prop instanceof MethodProperty) {
MethodProperty methodProperty = (MethodProperty) prop;
Method method = (Method) methodProperty.getMember().getAnnotated();
if (__config.canOverrideAccessModifiers()) {
Jacksons.checkAndFixAccess(method, true);
}
}
}
/**
* @param prop the property
* @since 3.2.5
*/
@Override
public void addProperty(SettableBeanProperty prop) {
reflectInvokeSetAccessible(prop);
super.addProperty(prop);
}
/**
* @param prop the property
* @since 3.2.5
*/
@Override
public void addOrReplaceProperty(SettableBeanProperty prop, boolean allowOverride) {
if (allowOverride) {
reflectInvokeSetAccessible(prop);
}
super.addOrReplaceProperty(prop, allowOverride);
}
}