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org.codehaus.jackson.map.ser.std.StdContainerSerializers Maven / Gradle / Ivy
Data Mapper package is a high-performance data binding package
built on Jackson JSON processor
package org.codehaus.jackson.map.ser.std;
import java.io.IOException;
import java.util.*;
import org.codehaus.jackson.JsonGenerationException;
import org.codehaus.jackson.JsonGenerator;
import org.codehaus.jackson.map.*;
import org.codehaus.jackson.map.annotate.JacksonStdImpl;
import org.codehaus.jackson.map.ser.impl.PropertySerializerMap;
import org.codehaus.jackson.map.ser.std.CollectionSerializer;
import org.codehaus.jackson.type.JavaType;
/**
* Dummy container class to group standard container serializers: serializers
* that can serialize things like {@link java.util.List}s,
* {@link java.util.Map}s and such.
*/
public class StdContainerSerializers
{
protected StdContainerSerializers() { }
/*
/**********************************************************
/* Factory methods
/**********************************************************
*/
public static ContainerSerializerBase indexedListSerializer(JavaType elemType,
boolean staticTyping, TypeSerializer vts, BeanProperty property,
JsonSerializer valueSerializer)
{
return new IndexedListSerializer(elemType, staticTyping, vts, property, valueSerializer);
}
public static ContainerSerializerBase collectionSerializer(JavaType elemType,
boolean staticTyping, TypeSerializer vts, BeanProperty property,
JsonSerializer valueSerializer)
{
return new CollectionSerializer(elemType, staticTyping, vts, property, valueSerializer);
}
public static ContainerSerializerBase iteratorSerializer(JavaType elemType,
boolean staticTyping, TypeSerializer vts, BeanProperty property)
{
return new IteratorSerializer(elemType, staticTyping, vts, property);
}
public static ContainerSerializerBase iterableSerializer(JavaType elemType,
boolean staticTyping, TypeSerializer vts, BeanProperty property)
{
return new IterableSerializer(elemType, staticTyping, vts, property);
}
public static JsonSerializer enumSetSerializer(JavaType enumType, BeanProperty property)
{
return new EnumSetSerializer(enumType, property);
}
/*
/**********************************************************
/* Concrete serializers, Lists/collections
/**********************************************************
*/
/**
* This is an optimized serializer for Lists that can be efficiently
* traversed by index (as opposed to others, such as {@link LinkedList}
* that can not}.
*/
@JacksonStdImpl
public static class IndexedListSerializer
extends AsArraySerializerBase>
{
public IndexedListSerializer(JavaType elemType, boolean staticTyping, TypeSerializer vts,
BeanProperty property, JsonSerializer valueSerializer)
{
super(List.class, elemType, staticTyping, vts, property, valueSerializer);
}
@Override
public ContainerSerializerBase _withValueTypeSerializer(TypeSerializer vts) {
return new IndexedListSerializer(_elementType, _staticTyping, vts, _property, _elementSerializer);
}
@Override
public void serializeContents(List value, JsonGenerator jgen, SerializerProvider provider)
throws IOException, JsonGenerationException
{
if (_elementSerializer != null) {
serializeContentsUsing(value, jgen, provider, _elementSerializer);
return;
}
if (_valueTypeSerializer != null) {
serializeTypedContents(value, jgen, provider);
return;
}
final int len = value.size();
if (len == 0) {
return;
}
int i = 0;
try {
PropertySerializerMap serializers = _dynamicSerializers;
for (; i < len; ++i) {
Object elem = value.get(i);
if (elem == null) {
provider.defaultSerializeNull(jgen);
} else {
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);
}
serializers = _dynamicSerializers;
}
serializer.serialize(elem, jgen, provider);
}
}
} catch (Exception e) {
// [JACKSON-55] Need to add reference information
wrapAndThrow(provider, e, value, i);
}
}
public void serializeContentsUsing(List value, JsonGenerator jgen, SerializerProvider provider,
JsonSerializer ser)
throws IOException, JsonGenerationException
{
final int len = value.size();
if (len == 0) {
return;
}
final TypeSerializer typeSer = _valueTypeSerializer;
for (int i = 0; i < len; ++i) {
Object elem = value.get(i);
try {
if (elem == null) {
provider.defaultSerializeNull(jgen);
} else if (typeSer == null) {
ser.serialize(elem, jgen, provider);
} else {
ser.serializeWithType(elem, jgen, provider, typeSer);
}
} catch (Exception e) {
// [JACKSON-55] Need to add reference information
wrapAndThrow(provider, e, value, i);
}
}
}
public void serializeTypedContents(List value, JsonGenerator jgen, SerializerProvider provider)
throws IOException, JsonGenerationException
{
final int len = value.size();
if (len == 0) {
return;
}
int i = 0;
try {
final TypeSerializer typeSer = _valueTypeSerializer;
PropertySerializerMap serializers = _dynamicSerializers;
for (; i < len; ++i) {
Object elem = value.get(i);
if (elem == null) {
provider.defaultSerializeNull(jgen);
} else {
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);
}
serializers = _dynamicSerializers;
}
serializer.serializeWithType(elem, jgen, provider, typeSer);
}
}
} catch (Exception e) {
// [JACKSON-55] Need to add reference information
wrapAndThrow(provider, e, value, i);
}
}
}
@JacksonStdImpl
public static class IteratorSerializer
extends AsArraySerializerBase>
{
public IteratorSerializer(JavaType elemType, boolean staticTyping, TypeSerializer vts,
BeanProperty property)
{
super(Iterator.class, elemType, staticTyping, vts, property, null);
}
@Override
public ContainerSerializerBase _withValueTypeSerializer(TypeSerializer vts) {
return new IteratorSerializer(_elementType, _staticTyping, vts, _property);
}
@Override
public void serializeContents(Iterator value, JsonGenerator jgen, SerializerProvider provider)
throws IOException, JsonGenerationException
{
if (value.hasNext()) {
final TypeSerializer typeSer = _valueTypeSerializer;
JsonSerializer prevSerializer = null;
Class prevClass = null;
do {
Object elem = value.next();
if (elem == null) {
provider.defaultSerializeNull(jgen);
} else {
// Minor optimization to avoid most lookups:
Class cc = elem.getClass();
JsonSerializer currSerializer;
if (cc == prevClass) {
currSerializer = prevSerializer;
} else {
currSerializer = provider.findValueSerializer(cc, _property);
prevSerializer = currSerializer;
prevClass = cc;
}
if (typeSer == null) {
currSerializer.serialize(elem, jgen, provider);
} else {
currSerializer.serializeWithType(elem, jgen, provider, typeSer);
}
}
} while (value.hasNext());
}
}
}
}
