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package javax.json;
import java.io.OutputStream;
import java.io.Writer;
import java.nio.charset.Charset;
import java.util.Map;
/**
* Factory to create {@link javax.json.JsonWriter} instances. If a factory
* instance is configured with some configuration, that would be
* used to configure the created writer instances.
*
*
* {@link javax.json.JsonWriter} can also be created using {@link Json}'s
* {@code createWriter} methods. If multiple writer instances are created,
* then creating them using a writer factory is preferred.
*
*
* For example:
*
*
* JsonWriterFactory factory = Json.createWriterFactory(...);
* JsonWriter writer1 = factory.createWriter(...);
* JsonWriter writer2 = factory.createWriter(...);
*
*
*
* All the methods in this class are safe for use by multiple concurrent
* threads.
*/
public interface JsonWriterFactory {
/**
* Creates a JSON writer to write a JSON {@link JsonObject object} or
* {@link JsonArray array} structure to the specified character stream.
* The writer is configured with the factory configuration.
*
* @param writer to which JSON object or array is written
* @return a JSON writer
*/
JsonWriter createWriter(Writer writer);
/**
* Creates a JSON writer to write a JSON {@link JsonObject object} or
* {@link JsonArray array} structure to the specified byte stream.
* Characters written to the stream are encoded into bytes using UTF-8
* encoding. The writer is configured with the factory configuration.
*
* @param out to which JSON object or array is written
* @return a JSON writer
*/
JsonWriter createWriter(OutputStream out);
/**
* Creates a JSON writer to write a JSON {@link JsonObject object} or
* {@link JsonArray array} structure to the specified byte stream.
* Characters written to the stream are encoded into bytes using the
* specified charset. The writer is configured with the factory
* configuration.
*
* @param out to which JSON object or array is written
* @param charset a charset
* @return a JSON writer
*/
JsonWriter createWriter(OutputStream out, Charset charset);
/**
* Returns read-only map of supported provider specific configuration
* properties that are used to configure the created JSON writer objects.
* If there are any specified configuration properties that are not
* supported by the provider, they won't be part of the returned map.
*
* @return a map of supported provider specific properties that are used
* to configure the created writers. The map may be empty but not null.
*/
Map getConfigInUse();
}