/*
* Copyright (c) 2010 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
* in compliance with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License
* is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
* or implied. See the License for the specific language governing permissions and limitations under
* the License.
*/
package com.google.api.client.json.jackson;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.JsonGenerator;
import com.google.api.client.json.JsonParser;
import com.google.api.client.json.JsonToken;
import com.google.api.client.util.Preconditions;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.Reader;
import java.io.Writer;
import java.nio.charset.Charset;
/**
* Low-level JSON library implementation based on Jackson.
*
* <p>
* Implementation is thread-safe, and sub-classes must be thread-safe. For maximum efficiency,
* applications should use a single globally-shared instance of the JSON factory.
* </p>
*
* @since 1.3
* @author Yaniv Inbar
*/
public final class JacksonFactory extends JsonFactory {
/** JSON factory. */
private final org.codehaus.jackson.JsonFactory factory = new org.codehaus.jackson.JsonFactory();
{
// don't auto-close JSON content in order to ensure consistent behavior across JSON factories
// TODO(rmistry): Should we disable the JsonGenerator.Feature.AUTO_CLOSE_TARGET feature?
factory.configure(org.codehaus.jackson.JsonGenerator.Feature.AUTO_CLOSE_JSON_CONTENT, false);
}
@Override
public JsonGenerator createJsonGenerator(OutputStream out, Charset enc) throws IOException {
return new JacksonGenerator(
this, factory.createJsonGenerator(out, org.codehaus.jackson.JsonEncoding.UTF8));
}
@Override
public JsonGenerator createJsonGenerator(Writer writer) throws IOException {
return new JacksonGenerator(this, factory.createJsonGenerator(writer));
}
@Override
public JsonParser createJsonParser(Reader reader) throws IOException {
Preconditions.checkNotNull(reader);
return new JacksonParser(this, factory.createJsonParser(reader));
}
@Override
public JsonParser createJsonParser(InputStream in) throws IOException {
Preconditions.checkNotNull(in);
return new JacksonParser(this, factory.createJsonParser(in));
}
@Override
public JsonParser createJsonParser(InputStream in, Charset charset) throws IOException {
Preconditions.checkNotNull(in);
return new JacksonParser(this, factory.createJsonParser(in));
}
@Override
public JsonParser createJsonParser(String value) throws IOException {
Preconditions.checkNotNull(value);
return new JacksonParser(this, factory.createJsonParser(value));
}
static JsonToken convert(org.codehaus.jackson.JsonToken token) {
if (token == null) {
return null;
}
switch (token) {
case END_ARRAY:
return JsonToken.END_ARRAY;
case START_ARRAY:
return JsonToken.START_ARRAY;
case END_OBJECT:
return JsonToken.END_OBJECT;
case START_OBJECT:
return JsonToken.START_OBJECT;
case VALUE_FALSE:
return JsonToken.VALUE_FALSE;
case VALUE_TRUE:
return JsonToken.VALUE_TRUE;
case VALUE_NULL:
return JsonToken.VALUE_NULL;
case VALUE_STRING:
return JsonToken.VALUE_STRING;
case VALUE_NUMBER_FLOAT:
return JsonToken.VALUE_NUMBER_FLOAT;
case VALUE_NUMBER_INT:
return JsonToken.VALUE_NUMBER_INT;
case FIELD_NAME:
return JsonToken.FIELD_NAME;
default:
return JsonToken.NOT_AVAILABLE;
}
}
}