package com.facebook.presto.jdbc.internal.jackson.databind.ext;
import java.io.IOException;
import org.w3c.dom.Node;
import org.w3c.dom.bootstrap.DOMImplementationRegistry;
import org.w3c.dom.ls.DOMImplementationLS;
import org.w3c.dom.ls.LSSerializer;
import com.facebook.presto.jdbc.internal.jackson.core.*;
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.JsonFormatVisitorWrapper;
import com.facebook.presto.jdbc.internal.jackson.databind.ser.std.StdSerializer;
public class DOMSerializer
extends StdSerializer<Node>
{
protected final DOMImplementationLS _domImpl;
public DOMSerializer()
{
super(Node.class);
DOMImplementationRegistry registry;
try {
registry = DOMImplementationRegistry.newInstance();
} catch (Exception e) {
throw new IllegalStateException("Could not instantiate DOMImplementationRegistry: "+e.getMessage(), e);
}
_domImpl = (DOMImplementationLS)registry.getDOMImplementation("LS");
}
@Override
public void serialize(Node value, JsonGenerator jgen, SerializerProvider provider)
throws IOException, JsonGenerationException
{
if (_domImpl == null) throw new IllegalStateException("Could not find DOM LS");
LSSerializer writer = _domImpl.createLSSerializer();
jgen.writeString(writer.writeToString(value));
}
@Override
public JsonNode getSchema(SerializerProvider provider, java.lang.reflect.Type typeHint)
{
// Well... it is serialized as String
return createSchemaNode("string", true);
}
@Override
public void acceptJsonFormatVisitor(JsonFormatVisitorWrapper visitor, JavaType typeHint)
{
visitor.expectAnyFormat(typeHint);
}
}