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/*
* This file is part of the SimpleJSON Java library.
*
* It is based on Clifton Labs' version
* (https://github.com/cliftonlabs/json-simple/), which is a fork of
* the original by Yidong Fang (https://github.com/fangyidong/json-simple/).
* Other authors contributions remain the copyright of the respective
* owner, with the major ones of this derivative listed below.
*
* Copyright 2008-2009,2012-2014,2021 Yidong Fang
* Copyright 2008-2009,2012-2014,2016-2021 Clifton Labs
* Copyright 2021 BSPF Systems, LLC
*
* 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 org.bspfsystems.simplejson;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.Map;
import org.bspfsystems.simplejson.parser.JSONException;
import org.bspfsystems.simplejson.parser.JSONParser;
import org.jetbrains.annotations.Contract;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
/**
* Represents a simple implementation of a {@link JSONObject}, which is a
* common, non-thread-safe data format for {@link String}-to-{@link Object}
* data mappings.
*
* The contents of the {@link JSONObject} are only validated as JSON values upon
* serialization (see {@link JSONSerializable#serialize()}). This means that all
* values added to a {@link JSONObject} must be recognized by the
* {@link JSONParser} for it to be considered a true {@link JSONObject}. Until
* such a recognition has been reached, the item should be considered a
* {@link JSONSerializable} {@link LinkedHashMap}.
*/
public final class SimpleJSONObject extends LinkedHashMap implements JSONObject {
/**
* Constructs a new {@link JSONObject}.
*
* @see LinkedHashMap#LinkedHashMap()
*/
public SimpleJSONObject() {
super();
}
/**
* Constructs a new {@link JSONObject} with the specified initial capacity.
*
* @param initialCapacity The initial capacity the underlying
* {@link LinkedHashMap} should allocate for.
* @see LinkedHashMap#LinkedHashMap(int)
*/
public SimpleJSONObject(final int initialCapacity) {
super(initialCapacity);
}
/**
* Constructs a new {@link JSONObject} with the specified initial capacity
* and load factor.
*
* @param initialCapacity The initial capacity the underlying
* {@link LinkedHashMap} should allocate for.
* @param loadFactor The ratio from 0 to 1 of how full the underlying
* {@link LinkedHashMap} should be until it adds capacity.
* @see LinkedHashMap#LinkedHashMap(int, float)
*/
public SimpleJSONObject(final int initialCapacity, final float loadFactor) {
super(initialCapacity, loadFactor);
}
/**
* Constructs a new {@link JSONObject} with the specified initial capacity,
* load factor, and ordering mode.
*
* @param initialCapacity The initial capacity the underlying
* {@link LinkedHashMap} should allocate for.
* @param loadFactor The ratio from 0 to 1 of how full the underlying
* {@link LinkedHashMap} should be until it adds capacity.
* @param accessOrder {@code true} if the ordering mode should be for
* access-order, {@code false} if it should be for
* insertion-order.
* @see LinkedHashMap#LinkedHashMap(int, float, boolean)
*/
public SimpleJSONObject(final int initialCapacity, final float loadFactor, final boolean accessOrder) {
super(initialCapacity, loadFactor, accessOrder);
}
/**
* Constructs a new {@link SimpleJSONObject} with the specified {@link Map} of
* data loaded into the underlying {@link LinkedHashMap} to start.
*
* @param data The {@link Map} whose data will be placed into the
* {@link SimpleJSONObject} to start.
* @see LinkedHashMap#LinkedHashMap(Map)
*/
public SimpleJSONObject(@NotNull final Map data) {
super(data);
}
/**
* {@inheritDoc}
*/
@Override
public int size() {
return super.size();
}
/**
* {@inheritDoc}
*/
@Override
@NotNull
public Iterator> iterator() {
return super.entrySet().iterator();
}
/**
* {@inheritDoc}
*/
@Override
public void set(@NotNull final String key, @Nullable final Object value) {
this.put(key, value);
}
/**
* {@inheritDoc}
*/
@Override
public void unset(@NotNull final String key) {
this.remove(key);
}
/**
* {@inheritDoc}
*/
@Override
public boolean isNull(@NotNull final String key) {
return this.containsKey(key) && this.get(key) == null;
}
/**
* {@inheritDoc}
*/
@Override
public boolean isBoolean(@NotNull final String key) {
return this.containsKey(key) && this.get(key) instanceof Boolean;
}
/**
* {@inheritDoc}
*/
@Override
public boolean getBoolean(@NotNull final String key) {
return this.getBoolean(key, false);
}
/**
* {@inheritDoc}
*/
@Override
public boolean getBoolean(@NotNull final String key, final boolean def) {
return this.isBoolean(key) ? (Boolean) this.get(key) : def;
}
/**
* {@inheritDoc}
*/
@Override
public boolean isByte(@NotNull final String key) {
return this.containsKey(key) && this.get(key) instanceof Number;
}
/**
* {@inheritDoc}
*/
@Override
public byte getByte(@NotNull final String key) {
return this.getByte(key, (byte) 0);
}
/**
* {@inheritDoc}
*/
@Override
public byte getByte(@NotNull final String key, final byte def) {
final Object value = this.get(key);
return value instanceof Number ? ((Number) value).byteValue() : def;
}
/**
* {@inheritDoc}
*/
@Override
public boolean isShort(@NotNull final String key) {
return this.containsKey(key) && this.get(key) instanceof Number;
}
/**
* {@inheritDoc}
*/
@Override
public short getShort(@NotNull final String key) {
return this.getShort(key, (short) 0);
}
/**
* {@inheritDoc}
*/
@Override
public short getShort(@NotNull final String key, final short def) {
final Object value = this.get(key);
return value instanceof Number ? ((Number) value).shortValue() : def;
}
/**
* {@inheritDoc}
*/
@Override
public boolean isInteger(@NotNull final String key) {
return this.containsKey(key) && this.get(key) instanceof Number;
}
/**
* {@inheritDoc}
*/
@Override
public int getInteger(@NotNull final String key) {
return this.getInteger(key, 0);
}
/**
* {@inheritDoc}
*/
@Override
public int getInteger(@NotNull final String key, final int def) {
final Object value = this.get(key);
return value instanceof Number ? ((Number) value).intValue() : def;
}
/**
* {@inheritDoc}
*/
@Override
public boolean isLong(@NotNull final String key) {
return this.containsKey(key) && this.get(key) instanceof Number;
}
/**
* {@inheritDoc}
*/
@Override
public long getLong(@NotNull final String key) {
return this.getLong(key, 0L);
}
/**
* {@inheritDoc}
*/
@Override
public long getLong(@NotNull final String key, final long def) {
final Object value = this.get(key);
return value instanceof Number ? ((Number) value).longValue() : def;
}
/**
* {@inheritDoc}
*/
@Override
public boolean isFloat(@NotNull final String key) {
return this.containsKey(key) && this.get(key) instanceof Number;
}
/**
* {@inheritDoc}
*/
@Override
public float getFloat(@NotNull final String key) {
return this.getFloat(key, 0.0F);
}
/**
* {@inheritDoc}
*/
@Override
public float getFloat(@NotNull final String key, final float def) {
final Object value = this.get(key);
return value instanceof Number ? ((Number) value).floatValue() : def;
}
/**
* {@inheritDoc}
*/
@Override
public boolean isDouble(@NotNull final String key) {
return this.containsKey(key) && this.get(key) instanceof Number;
}
/**
* {@inheritDoc}
*/
@Override
public double getDouble(@NotNull final String key) {
return this.getDouble(key, 0.0D);
}
/**
* {@inheritDoc}
*/
@Override
public double getDouble(@NotNull final String key, final double def) {
final Object value = this.get(key);
return value instanceof Number ? ((Number) value).doubleValue() : def;
}
/**
* {@inheritDoc}
*/
@Override
public boolean isString(@NotNull final String key) {
return this.containsKey(key) && this.get(key) instanceof String;
}
/**
* {@inheritDoc}
*/
@Override
@Nullable
public String getString(@NotNull final String key) {
return this.getString(key, null);
}
/**
* {@inheritDoc}
*/
@Override
@Contract("_, !null -> !null")
@Nullable
public String getString(@NotNull final String key, @Nullable final String def) {
return this.isString(key) ? (String) this.get(key) : def;
}
/**
* {@inheritDoc}
*/
@Override
public boolean isArray(@NotNull final String key) {
return this.containsKey(key) && this.get(key) instanceof JSONArray;
}
/**
* {@inheritDoc}
*/
@Override
@Nullable
public JSONArray getArray(@NotNull final String key) {
return this.getArray(key, null);
}
/**
* {@inheritDoc}
*/
@Override
@Contract("_, !null -> !null")
@Nullable
public JSONArray getArray(@NotNull final String key, @Nullable final JSONArray def) {
return this.isArray(key) ? (JSONArray) this.get(key) : def;
}
/**
* {@inheritDoc}
*/
@Override
public boolean isObject(@NotNull final String key) {
return this.containsKey(key) && this.get(key) instanceof JSONObject;
}
/**
* {@inheritDoc}
*/
@Override
@Nullable
public JSONObject getObject(@NotNull final String key) {
return this.getObject(key, null);
}
/**
* {@inheritDoc}
*/
@Override
@Contract("_, !null -> !null")
@Nullable
public JSONObject getObject(@NotNull final String key, @Nullable final JSONObject def) {
return this.isObject(key) ? (JSONObject) this.get(key) : def;
}
/**
* {@inheritDoc}
*/
@Override
@NotNull
public String serialize() throws JSONException {
final StringBuilder builder = new StringBuilder();
final Iterator> iterator = this.entrySet().iterator();
int index = 1;
builder.append("{");
while (iterator.hasNext()) {
if (index > 1) {
builder.append(",");
}
final Map.Entry entry = iterator.next();
builder.append(JSONParser.serialize(entry.getKey()));
builder.append(":");
builder.append(JSONParser.serialize(entry.getValue()));
index++;
}
builder.append("}");
return builder.toString();
}
}