| /* |
| * 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 javax.json.JsonArray; |
| import javax.json.JsonNumber; |
| import javax.json.JsonObject; |
| import javax.json.JsonString; |
| import javax.json.JsonValue; |
| import javax.json.spi.JsonProvider; |
| import java.io.ObjectStreamException; |
| import java.io.Serializable; |
| import java.util.AbstractMap; |
| import java.util.Iterator; |
| import java.util.Map; |
| import java.util.Set; |
| |
| |
| final class JsonObjectImpl extends AbstractMap<String, JsonValue> implements JsonObject, Serializable { |
| private transient Integer hashCode = null; |
| private final Map<String, JsonValue> unmodifieableBackingMap; |
| |
| private <T> T value(final String name, final Class<T> clazz) { |
| final JsonValue v = unmodifieableBackingMap.get(name); |
| if (v != null) { |
| return clazz.cast(v); |
| } |
| return null; |
| } |
| |
| private <T> T valueOrExcpetion(final String name, final Class<T> clazz) { |
| T value = value(name, clazz); |
| if (value == null) { |
| throw new NullPointerException("no mapping for " + name); |
| } |
| |
| return value; |
| } |
| |
| JsonObjectImpl(final Map<String, JsonValue> backingMap) { |
| super(); |
| this.unmodifieableBackingMap = backingMap; |
| } |
| |
| @Override |
| public JsonArray getJsonArray(final String name) { |
| return value(name, JsonArray.class); |
| } |
| |
| @Override |
| public JsonObject getJsonObject(final String name) { |
| return value(name, JsonObject.class); |
| } |
| |
| @Override |
| public JsonNumber getJsonNumber(final String name) { |
| return value(name, JsonNumber.class); |
| } |
| |
| @Override |
| public JsonString getJsonString(final String name) { |
| return value(name, JsonString.class); |
| } |
| |
| @Override |
| public String getString(final String name) { |
| return valueOrExcpetion(name, JsonString.class).getString(); |
| } |
| |
| @Override |
| public String getString(final String name, final String defaultValue) { |
| final Object v = value(name, JsonValue.class); |
| if (v != null && v instanceof JsonString) { |
| return JsonString.class.cast(v).getString(); |
| } |
| |
| return defaultValue; |
| } |
| |
| @Override |
| public int getInt(final String name) { |
| return valueOrExcpetion(name, JsonNumber.class).intValue(); |
| } |
| |
| @Override |
| public int getInt(final String name, final int defaultValue) { |
| final Object v = value(name, JsonValue.class); |
| if (v != null && v instanceof JsonNumber) { |
| return JsonNumber.class.cast(v).intValue(); |
| } |
| |
| return defaultValue; |
| } |
| |
| @Override |
| public boolean getBoolean(final String name) { |
| final JsonValue obj = valueOrExcpetion(name, JsonValue.class); |
| if (JsonValue.TRUE == obj) { |
| return true; |
| } |
| if (JsonValue.FALSE == obj) { |
| return false; |
| } |
| throw new ClassCastException("Wrong value for a boolean: " + obj); |
| } |
| |
| @Override |
| public boolean getBoolean(final String name, final boolean defaultValue) { |
| final Object v = value(name, JsonValue.class); |
| if (v != null) { |
| return JsonValue.TRUE.equals(v) || !JsonValue.FALSE.equals(v) && defaultValue; |
| } |
| return defaultValue; |
| } |
| |
| @Override |
| public boolean isNull(final String name) { |
| return JsonValue.NULL.equals(valueOrExcpetion(name, JsonValue.class)); |
| } |
| |
| @Override |
| public ValueType getValueType() { |
| return ValueType.OBJECT; |
| } |
| |
| @Override |
| public String toString() { |
| final StringBuilder builder = new StringBuilder("{"); |
| final Iterator<Map.Entry<String, JsonValue>> it = unmodifieableBackingMap.entrySet().iterator(); |
| boolean hasNext = it.hasNext(); |
| while (hasNext) { |
| final Map.Entry<String, JsonValue> entry = it.next(); |
| |
| builder.append('"').append(entry.getKey()).append("\":"); |
| |
| final JsonValue value = entry.getValue(); |
| if (JsonString.class.isInstance(value)) { |
| builder.append(value.toString()); |
| } else { |
| builder.append(value != JsonValue.NULL ? value.toString() : JsonChars.NULL); |
| } |
| |
| hasNext = it.hasNext(); |
| if (hasNext) { |
| builder.append(","); |
| } |
| } |
| return builder.append('}').toString(); |
| } |
| |
| @Override |
| public boolean equals(final Object obj) { |
| return JsonObjectImpl.class.isInstance(obj) |
| && unmodifieableBackingMap.equals(JsonObjectImpl.class.cast(obj).unmodifieableBackingMap); |
| } |
| |
| @Override |
| public int hashCode() { |
| Integer h = hashCode; |
| if (h == null) { |
| h = unmodifieableBackingMap.hashCode(); |
| hashCode = h; |
| } |
| return h; |
| } |
| |
| @Override |
| public Set<java.util.Map.Entry<String, JsonValue>> entrySet() { |
| return unmodifieableBackingMap.entrySet(); |
| } |
| |
| private Object writeReplace() throws ObjectStreamException { |
| return new SerializableValue(toString()); |
| } |
| |
| @Override |
| public JsonValue getValue(String jsonPointer) { |
| return JsonProvider.provider().createPointer(jsonPointer).getValue(this); |
| } |
| |
| @Override |
| public JsonObject asJsonObject() { |
| return JsonObject.class.cast(this); |
| } |
| |
| @Override |
| public JsonArray asJsonArray() { |
| return JsonArray.class.cast(this); |
| } |
| } |