Jackson Annotations Source Code

Jackson is "the Java JSON library" or "the best JSON parser for Java". Or simply as "JSON for Java".

Jackson Annotations Source Code files are provided in the source packge (jackson-annotations-2.12.4-sources.jar). You can download it at Jackson Maven Website.

You can also browse Jackson Annotations Source Code below:

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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.
public final class IndexedStringListSerializer
    extends StaticListSerializerBase<List<String>>
    private static final long serialVersionUID = 1L;

    public final static IndexedStringListSerializer instance = new IndexedStringListSerializer();

    /* Life-cycle
    protected IndexedStringListSerializer() {

    public IndexedStringListSerializer(IndexedStringListSerializer src,
            Boolean unwrapSingle) {
        super(src, unwrapSingle);

    public JsonSerializer<?> _withResolved(BeanProperty prop, Boolean unwrapSingle) {
        return new IndexedStringListSerializer(this, unwrapSingle);
    @Override protected JsonNode contentSchema() { return createSchemaNode("string", true); }

    protected void acceptContentVisitor(JsonArrayFormatVisitor visitor) throws JsonMappingException {

    /* Actual serialization

    public void serialize(List<String> value, JsonGenerator g,
            SerializerProvider provider) throws IOException
        final int len = value.size();
        if (len == 1) {
            if (((_unwrapSingle == null) &&
                    || (_unwrapSingle == Boolean.TRUE)) {
                serializeContents(value, g, provider, 1);
        g.writeStartArray(value, len);
        serializeContents(value, g, provider, len);

    public void serializeWithType(List<String> value, JsonGenerator g, SerializerProvider provider,
            TypeSerializer typeSer)
        throws IOException
        WritableTypeId typeIdDef = typeSer.writeTypePrefix(g,
                typeSer.typeId(value, JsonToken.START_ARRAY));
        serializeContents(value, g, provider, value.size());
        typeSer.writeTypeSuffix(g, typeIdDef);

    private final void serializeContents(List<String> 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) {
                } else {
        } catch (Exception e) {
            wrapAndThrow(provider, e, value, i);



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2022-02-19, 36241👍, 0💬