| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.johnzon.core; |
| |
| import java.io.OutputStream; |
| import java.io.Serializable; |
| import java.io.Writer; |
| import java.nio.charset.Charset; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.Locale; |
| import java.util.Map; |
| import java.util.concurrent.ConcurrentMap; |
| |
| import javax.json.stream.JsonGenerator; |
| import javax.json.stream.JsonGeneratorFactory; |
| |
| public class JsonGeneratorFactoryImpl implements JsonGeneratorFactory, Serializable { |
| public static final String BUFFER_LENGTH = "org.apache.johnzon.default-char-buffer-generator"; |
| public static final int DEFAULT_BUFFER_LENGTH = Integer.getInteger(BUFFER_LENGTH, 1024); //TODO check default string length/buffer size |
| private final Map<String, Object> internalConfig = new HashMap<String, Object>(); |
| private static final String[] SUPPORTED_CONFIG_KEYS = new String[] { |
| |
| JsonGenerator.PRETTY_PRINTING, BUFFER_LENGTH, JsonParserFactoryImpl.BUFFER_STRATEGY |
| |
| }; |
| //key caching currently disabled |
| private final ConcurrentMap<String, String> cache = null;//new ConcurrentHashMap<String, String>(); |
| private final boolean pretty; |
| private final BufferStrategy.BufferProvider<char[]> bufferProvider; |
| |
| public JsonGeneratorFactoryImpl(final Map<String, ?> config) { |
| |
| if(config != null) { |
| |
| for (String configKey : SUPPORTED_CONFIG_KEYS) { |
| if(config.containsKey(configKey)) { |
| internalConfig.put(configKey, config.get(configKey)); |
| } |
| } |
| } |
| |
| if(internalConfig.containsKey(JsonGenerator.PRETTY_PRINTING)) { |
| this.pretty = Boolean.TRUE.equals(internalConfig.get(JsonGenerator.PRETTY_PRINTING)) || "true".equals(internalConfig.get(JsonGenerator.PRETTY_PRINTING)); |
| } else { |
| this.pretty = false; |
| } |
| |
| final int bufferSize = getInt(BUFFER_LENGTH); |
| if (bufferSize <= 0) { |
| throw new IllegalArgumentException("buffer length must be greater than zero"); |
| } |
| |
| this.bufferProvider = getBufferProvider().newCharProvider(bufferSize); |
| } |
| |
| private BufferStrategy getBufferProvider() { |
| final Object name = internalConfig.get(JsonParserFactoryImpl.BUFFER_STRATEGY); |
| if (name != null) { |
| return BufferStrategy.valueOf(name.toString().toUpperCase(Locale.ENGLISH)); |
| } |
| return BufferStrategy.QUEUE; |
| } |
| |
| private int getInt(final String key) { |
| final Object maxStringSize = internalConfig.get(key); |
| if (maxStringSize == null) { |
| return DEFAULT_BUFFER_LENGTH; |
| } else if (Number.class.isInstance(maxStringSize)) { |
| return Number.class.cast(maxStringSize).intValue(); |
| } |
| return Integer.parseInt(maxStringSize.toString()); |
| } |
| |
| @Override |
| public JsonGenerator createGenerator(final Writer writer) { |
| if (pretty) { |
| return new JsonPrettyGeneratorImpl(writer, bufferProvider, cache); |
| } |
| return new JsonGeneratorImpl(writer, bufferProvider, cache); |
| } |
| |
| |
| |
| @Override |
| public JsonGenerator createGenerator(final OutputStream out) { |
| if (pretty) { |
| return new JsonPrettyGeneratorImpl(out, bufferProvider, cache); |
| } |
| return new JsonGeneratorImpl(out, bufferProvider, cache); |
| } |
| |
| @Override |
| public JsonGenerator createGenerator(final OutputStream out, final Charset charset) { |
| if (pretty) { |
| return new JsonPrettyGeneratorImpl(out,charset, bufferProvider, cache); |
| } |
| return new JsonGeneratorImpl(out,charset, bufferProvider, cache); |
| } |
| |
| @Override |
| public Map<String, ?> getConfigInUse() { |
| return Collections.unmodifiableMap(internalConfig); |
| } |
| } |