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spinjar.com.fasterxml.jackson.databind.ser.impl.IndexedStringListSerializer Maven / Gradle / Ivy
package com.fasterxml.jackson.databind.ser.impl;
import java.io.IOException;
import java.util.*;
import com.fasterxml.jackson.core.*;
import com.fasterxml.jackson.core.type.WritableTypeId;
import com.fasterxml.jackson.databind.*;
import com.fasterxml.jackson.databind.annotation.JacksonStdImpl;
import com.fasterxml.jackson.databind.jsonFormatVisitors.JsonArrayFormatVisitor;
import com.fasterxml.jackson.databind.jsonFormatVisitors.JsonFormatTypes;
import com.fasterxml.jackson.databind.jsontype.TypeSerializer;
import com.fasterxml.jackson.databind.ser.std.StaticListSerializerBase;
/**
* Efficient implement for serializing {@link List}s that contains Strings and are random-accessible.
* The only complexity is due to possibility that serializer for {@link String}
* may be overridde; because of this, logic is needed to ensure that the default
* serializer is in use to use fastest mode, or if not, to defer to custom
* String serializer.
*/
@JacksonStdImpl
public final class IndexedStringListSerializer
extends StaticListSerializerBase>
{
private static final long serialVersionUID = 1L;
public final static IndexedStringListSerializer instance = new IndexedStringListSerializer();
/*
/**********************************************************
/* Life-cycle
/**********************************************************
*/
protected IndexedStringListSerializer() {
super(List.class);
}
public IndexedStringListSerializer(IndexedStringListSerializer src,
Boolean unwrapSingle) {
super(src, unwrapSingle);
}
@Override
public JsonSerializer _withResolved(BeanProperty prop, Boolean unwrapSingle) {
return new IndexedStringListSerializer(this, unwrapSingle);
}
@Override protected JsonNode contentSchema() { return createSchemaNode("string", true); }
@Override
protected void acceptContentVisitor(JsonArrayFormatVisitor visitor) throws JsonMappingException {
visitor.itemsFormat(JsonFormatTypes.STRING);
}
/*
/**********************************************************
/* Actual serialization
/**********************************************************
*/
@Override
public void serialize(List value, JsonGenerator g,
SerializerProvider provider) throws IOException
{
final int len = value.size();
if (len == 1) {
if (((_unwrapSingle == null) &&
provider.isEnabled(SerializationFeature.WRITE_SINGLE_ELEM_ARRAYS_UNWRAPPED))
|| (_unwrapSingle == Boolean.TRUE)) {
serializeContents(value, g, provider, 1);
return;
}
}
g.writeStartArray(value, len);
serializeContents(value, g, provider, len);
g.writeEndArray();
}
@Override
public void serializeWithType(List value, JsonGenerator g, SerializerProvider provider,
TypeSerializer typeSer)
throws IOException
{
WritableTypeId typeIdDef = typeSer.writeTypePrefix(g,
typeSer.typeId(value, JsonToken.START_ARRAY));
g.setCurrentValue(value);
serializeContents(value, g, provider, value.size());
typeSer.writeTypeSuffix(g, typeIdDef);
}
private final void serializeContents(List value, JsonGenerator g,
SerializerProvider provider, int len) throws IOException
{
int i = 0;
try {
for (; i < len; ++i) {
String str = value.get(i);
if (str == null) {
provider.defaultSerializeNull(g);
} else {
g.writeString(str);
}
}
} catch (Exception e) {
wrapAndThrow(provider, e, value, i);
}
}
}