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com.fasterxml.jackson.databind.ser.std.ObjectArraySerializer Maven / Gradle / Ivy
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package com.fasterxml.jackson.databind.ser.std;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Type;
import com.fasterxml.jackson.core.*;
import com.fasterxml.jackson.databind.*;
import com.fasterxml.jackson.databind.annotation.JacksonStdImpl;
import com.fasterxml.jackson.databind.introspect.AnnotatedMember;
import com.fasterxml.jackson.databind.jsonFormatVisitors.JsonArrayFormatVisitor;
import com.fasterxml.jackson.databind.jsonFormatVisitors.JsonFormatVisitorWrapper;
import com.fasterxml.jackson.databind.jsonschema.SchemaAware;
import com.fasterxml.jackson.databind.jsontype.TypeSerializer;
import com.fasterxml.jackson.databind.node.ObjectNode;
import com.fasterxml.jackson.databind.ser.ContainerSerializer;
import com.fasterxml.jackson.databind.ser.ContextualSerializer;
import com.fasterxml.jackson.databind.ser.impl.PropertySerializerMap;
import com.fasterxml.jackson.databind.type.ArrayType;
import com.fasterxml.jackson.databind.type.TypeFactory;
/**
* Generic serializer for Object arrays (Object[]).
*/
@JacksonStdImpl
public class ObjectArraySerializer
extends ArraySerializerBase
implements ContextualSerializer
{
/**
* Whether we are using static typing (using declared types, ignoring
* runtime type) or not for elements.
*/
protected final boolean _staticTyping;
/**
* Declared type of element entries
*/
protected final JavaType _elementType;
/**
* Type serializer to use for values, if any.
*/
protected final TypeSerializer _valueTypeSerializer;
/**
* Value serializer to use, if it can be statically determined.
*/
protected JsonSerializer _elementSerializer;
/**
* If element type can not be statically determined, mapping from
* runtime type to serializer is handled using this object
*/
protected PropertySerializerMap _dynamicSerializers;
/*
/**********************************************************
/* Life-cycle
/**********************************************************
*/
public ObjectArraySerializer(JavaType elemType, boolean staticTyping,
TypeSerializer vts, JsonSerializer elementSerializer)
{
super(Object[].class, null);
_elementType = elemType;
_staticTyping = staticTyping;
_valueTypeSerializer = vts;
_dynamicSerializers = PropertySerializerMap.emptyMap();
_elementSerializer = elementSerializer;
}
public ObjectArraySerializer(ObjectArraySerializer src, TypeSerializer vts)
{
super(src);
_elementType = src._elementType;
_valueTypeSerializer = vts;
_staticTyping = src._staticTyping;
_dynamicSerializers = src._dynamicSerializers;
_elementSerializer = src._elementSerializer;
}
@SuppressWarnings("unchecked")
public ObjectArraySerializer(ObjectArraySerializer src,
BeanProperty property, TypeSerializer vts, JsonSerializer elementSerializer)
{
super(src, property);
_elementType = src._elementType;
_valueTypeSerializer = vts;
_staticTyping = src._staticTyping;
_dynamicSerializers = src._dynamicSerializers;
_elementSerializer = (JsonSerializer) elementSerializer;
}
@Override
public ContainerSerializer _withValueTypeSerializer(TypeSerializer vts)
{
return new ObjectArraySerializer(_elementType, _staticTyping, vts, _elementSerializer);
}
public ObjectArraySerializer withResolved(BeanProperty prop,
TypeSerializer vts, JsonSerializer ser) {
if (_property == prop && ser == _elementSerializer && _valueTypeSerializer == vts) {
return this;
}
return new ObjectArraySerializer(this, prop, vts, ser);
}
/*
/**********************************************************
/* Post-processing
/**********************************************************
*/
@Override
public JsonSerializer createContextual(SerializerProvider provider,
BeanProperty property)
throws JsonMappingException
{
TypeSerializer vts = _valueTypeSerializer;
if (vts != null) {
vts = vts.forProperty(property);
}
/* 29-Sep-2012, tatu: Actually, we need to do much more contextual
* checking here since we finally know for sure the property,
* and it may have overrides
*/
JsonSerializer ser = null;
// First: if we have a property, may have property-annotation overrides
if (property != null) {
AnnotatedMember m = property.getMember();
if (m != null) {
Object serDef = provider.getAnnotationIntrospector().findContentSerializer(m);
if (serDef != null) {
ser = provider.serializerInstance(m, serDef);
}
}
}
if (ser == null) {
ser = _elementSerializer;
}
// #124: May have a content converter
ser = findConvertingContentSerializer(provider, property, ser);
if (ser == null) {
// 30-Sep-2012, tatu: One more thing -- if explicit content type is annotated,
// we can consider it a static case as well.
if (_elementType != null) {
if (_staticTyping || hasContentTypeAnnotation(provider, property)) {
ser = provider.findValueSerializer(_elementType, property);
}
}
} else {
ser = provider.handleSecondaryContextualization(ser, property);
}
return withResolved(property, vts, ser);
}
/*
/**********************************************************
/* Accessors
/**********************************************************
*/
@Override
public JavaType getContentType() {
return _elementType;
}
@Override
public JsonSerializer getContentSerializer() {
return _elementSerializer;
}
@Override
public boolean isEmpty(Object[] value) {
return (value == null) || (value.length == 0);
}
@Override
public boolean hasSingleElement(Object[] value) {
return (value.length == 1);
}
/*
/**********************************************************
/* Actual serialization
/**********************************************************
*/
@Override
public void serializeContents(Object[] value, JsonGenerator jgen, SerializerProvider provider)
throws IOException, JsonGenerationException
{
final int len = value.length;
if (len == 0) {
return;
}
if (_elementSerializer != null) {
serializeContentsUsing(value, jgen, provider, _elementSerializer);
return;
}
if (_valueTypeSerializer != null) {
serializeTypedContents(value, jgen, provider);
return;
}
int i = 0;
Object elem = null;
try {
PropertySerializerMap serializers = _dynamicSerializers;
for (; i < len; ++i) {
elem = value[i];
if (elem == null) {
provider.defaultSerializeNull(jgen);
continue;
}
Class cc = elem.getClass();
JsonSerializer serializer = serializers.serializerFor(cc);
if (serializer == null) {
// To fix [JACKSON-508]
if (_elementType.hasGenericTypes()) {
serializer = _findAndAddDynamic(serializers,
provider.constructSpecializedType(_elementType, cc), provider);
} else {
serializer = _findAndAddDynamic(serializers, cc, provider);
}
}
serializer.serialize(elem, jgen, provider);
}
} catch (IOException ioe) {
throw ioe;
} catch (Exception e) {
// [JACKSON-55] Need to add reference information
/* 05-Mar-2009, tatu: But one nasty edge is when we get
* StackOverflow: usually due to infinite loop. But that gets
* hidden within an InvocationTargetException...
*/
Throwable t = e;
while (t instanceof InvocationTargetException && t.getCause() != null) {
t = t.getCause();
}
if (t instanceof Error) {
throw (Error) t;
}
throw JsonMappingException.wrapWithPath(t, elem, i);
}
}
public void serializeContentsUsing(Object[] value, JsonGenerator jgen, SerializerProvider provider,
JsonSerializer ser)
throws IOException, JsonGenerationException
{
final int len = value.length;
final TypeSerializer typeSer = _valueTypeSerializer;
int i = 0;
Object elem = null;
try {
for (; i < len; ++i) {
elem = value[i];
if (elem == null) {
provider.defaultSerializeNull(jgen);
continue;
}
if (typeSer == null) {
ser.serialize(elem, jgen, provider);
} else {
ser.serializeWithType(elem, jgen, provider, typeSer);
}
}
} catch (IOException ioe) {
throw ioe;
} catch (Exception e) {
Throwable t = e;
while (t instanceof InvocationTargetException && t.getCause() != null) {
t = t.getCause();
}
if (t instanceof Error) {
throw (Error) t;
}
throw JsonMappingException.wrapWithPath(t, elem, i);
}
}
public void serializeTypedContents(Object[] value, JsonGenerator jgen, SerializerProvider provider)
throws IOException, JsonGenerationException
{
final int len = value.length;
final TypeSerializer typeSer = _valueTypeSerializer;
int i = 0;
Object elem = null;
try {
PropertySerializerMap serializers = _dynamicSerializers;
for (; i < len; ++i) {
elem = value[i];
if (elem == null) {
provider.defaultSerializeNull(jgen);
continue;
}
Class cc = elem.getClass();
JsonSerializer serializer = serializers.serializerFor(cc);
if (serializer == null) {
serializer = _findAndAddDynamic(serializers, cc, provider);
}
serializer.serializeWithType(elem, jgen, provider, typeSer);
}
} catch (IOException ioe) {
throw ioe;
} catch (Exception e) {
Throwable t = e;
while (t instanceof InvocationTargetException && t.getCause() != null) {
t = t.getCause();
}
if (t instanceof Error) {
throw (Error) t;
}
throw JsonMappingException.wrapWithPath(t, elem, i);
}
}
@SuppressWarnings("deprecation")
@Override
public JsonNode getSchema(SerializerProvider provider, Type typeHint)
throws JsonMappingException
{
ObjectNode o = createSchemaNode("array", true);
if (typeHint != null) {
JavaType javaType = provider.constructType(typeHint);
if (javaType.isArrayType()) {
Class componentType = ((ArrayType) javaType).getContentType().getRawClass();
// 15-Oct-2010, tatu: We can't serialize plain Object.class; but what should it produce here? Untyped?
if (componentType == Object.class) {
o.put("items", com.fasterxml.jackson.databind.jsonschema.JsonSchema.getDefaultSchemaNode());
} else {
JsonSerializer ser = provider.findValueSerializer(componentType, _property);
JsonNode schemaNode = (ser instanceof SchemaAware) ?
((SchemaAware) ser).getSchema(provider, null) :
com.fasterxml.jackson.databind.jsonschema.JsonSchema.getDefaultSchemaNode();
o.put("items", schemaNode);
}
}
}
return o;
}
@Override
public void acceptJsonFormatVisitor(JsonFormatVisitorWrapper visitor, JavaType typeHint)
throws JsonMappingException
{
JsonArrayFormatVisitor arrayVisitor = visitor.expectArrayFormat(typeHint);
if (arrayVisitor != null) {
TypeFactory tf = visitor.getProvider().getTypeFactory();
JavaType contentType = tf.moreSpecificType(_elementType, typeHint.getContentType());
if (contentType == null) {
throw new JsonMappingException("Could not resolve type");
}
JsonSerializer valueSer = _elementSerializer;
if (valueSer == null) {
valueSer = visitor.getProvider().findValueSerializer(contentType, _property);
}
arrayVisitor.itemsFormat(valueSer, contentType);
}
}
protected final JsonSerializer _findAndAddDynamic(PropertySerializerMap map,
Class type, SerializerProvider provider) throws JsonMappingException
{
PropertySerializerMap.SerializerAndMapResult result = map.findAndAddSecondarySerializer(type, provider, _property);
// did we get a new map of serializers? If so, start using it
if (map != result.map) {
_dynamicSerializers = result.map;
}
return result.serializer;
}
protected final JsonSerializer _findAndAddDynamic(PropertySerializerMap map,
JavaType type, SerializerProvider provider) throws JsonMappingException
{
PropertySerializerMap.SerializerAndMapResult result = map.findAndAddSecondarySerializer(type, provider, _property);
// did we get a new map of serializers? If so, start using it
if (map != result.map) {
_dynamicSerializers = result.map;
}
return result.serializer;
}
}
