package com.facebook.presto.jdbc.internal.jackson.databind.ser.std;
import java.lang.reflect.Type;
import java.util.*;
import com.facebook.presto.jdbc.internal.jackson.databind.JavaType;
import com.facebook.presto.jdbc.internal.jackson.databind.JsonNode;
import com.facebook.presto.jdbc.internal.jackson.databind.SerializerProvider;
import com.facebook.presto.jdbc.internal.jackson.databind.jsonFormatVisitors.JsonArrayFormatVisitor;
import com.facebook.presto.jdbc.internal.jackson.databind.jsonFormatVisitors.JsonFormatVisitorWrapper;
import com.facebook.presto.jdbc.internal.jackson.databind.node.ObjectNode;
/**
* Intermediate base class for Lists, Collections and Arrays
* that contain static (non-dynamic) value types.
*/
public abstract class StaticListSerializerBase<T extends Collection<?>>
extends StdSerializer<T>
{
protected StaticListSerializerBase(Class<?> cls) {
super(cls, false);
}
@Override
public boolean isEmpty(T value) {
return (value == null) || (value.size() == 0);
}
@Override
public JsonNode getSchema(SerializerProvider provider, Type typeHint)
{
ObjectNode o = createSchemaNode("array", true);
o.put("items", contentSchema());
return o;
}
@Override
public void acceptJsonFormatVisitor(JsonFormatVisitorWrapper visitor, JavaType typeHint)
{
acceptContentVisitor(visitor.expectArrayFormat(typeHint));
}
/*
/**********************************************************
/* Abstract methods for sub-classes to implement
/**********************************************************
*/
protected abstract JsonNode contentSchema();
protected abstract void acceptContentVisitor(JsonArrayFormatVisitor visitor);
}