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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.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 Collection}s that contain Strings.
* 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
@SuppressWarnings("serial")
public class StringCollectionSerializer
extends StaticListSerializerBase<Collection<String>>
{
public final static StringCollectionSerializer instance = new StringCollectionSerializer();
/*
/**********************************************************
/* Life-cycle
/**********************************************************
*/
protected StringCollectionSerializer() {
super(Collection.class);
}
protected StringCollectionSerializer(StringCollectionSerializer src,
Boolean unwrapSingle)
{
super(src, unwrapSingle);
}
@Override
public JsonSerializer<?> _withResolved(BeanProperty prop, Boolean unwrapSingle) {
return new StringCollectionSerializer(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(Collection<String> value, JsonGenerator gen,
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, gen, provider);
return;
}
}
gen.writeStartArray(len);
serializeContents(value, gen, provider);
gen.writeEndArray();
}
@Override
public void serializeWithType(Collection<String> value, JsonGenerator g, SerializerProvider provider,
TypeSerializer typeSer)
throws IOException
{
typeSer.writeTypePrefixForArray(value, g);
serializeContents(value, g, provider);
typeSer.writeTypeSuffixForArray(value, g);
}
private final void serializeContents(Collection<String> value, JsonGenerator g, SerializerProvider provider)
throws IOException
{
g.setCurrentValue(value);
int i = 0;
try {
for (String str : value) {
if (str == null) {
provider.defaultSerializeNull(g);
} else {
g.writeString(str);
}
++i;
}
} catch (Exception e) {
wrapAndThrow(provider, e, value, i);
}
}
}
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