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Default provider for JSR 374:Java API for Processing JSON
/*
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*
* Copyright (c) 2012-2017 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://oss.oracle.com/licenses/CDDL+GPL-1.1
* or LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
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* file and include the License file at LICENSE.txt.
*
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* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
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package org.glassfish.json;
import org.glassfish.json.api.BufferPool;
import javax.json.JsonArrayBuilder;
import javax.json.*;
import java.io.StringWriter;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.util.*;
/**
* JsonObjectBuilder implementation
*
* @author Jitendra Kotamraju
* @author Kin-man Chung
*/
class JsonObjectBuilderImpl implements JsonObjectBuilder {
private Map valueMap;
private final BufferPool bufferPool;
JsonObjectBuilderImpl(BufferPool bufferPool) {
this.bufferPool = bufferPool;
}
JsonObjectBuilderImpl(JsonObject object, BufferPool bufferPool) {
this.bufferPool = bufferPool;
valueMap = new LinkedHashMap<>();
valueMap.putAll(object);
}
JsonObjectBuilderImpl(Map map, BufferPool bufferPool) {
this.bufferPool = bufferPool;
valueMap = new LinkedHashMap<>();
populate(map);
}
@Override
public JsonObjectBuilder add(String name, JsonValue value) {
validateName(name);
validateValue(value);
putValueMap(name, value);
return this;
}
@Override
public JsonObjectBuilder add(String name, String value) {
validateName(name);
validateValue(value);
putValueMap(name, new JsonStringImpl(value));
return this;
}
@Override
public JsonObjectBuilder add(String name, BigInteger value) {
validateName(name);
validateValue(value);
putValueMap(name, JsonNumberImpl.getJsonNumber(value));
return this;
}
@Override
public JsonObjectBuilder add(String name, BigDecimal value) {
validateName(name);
validateValue(value);
putValueMap(name, JsonNumberImpl.getJsonNumber(value));
return this;
}
@Override
public JsonObjectBuilder add(String name, int value) {
validateName(name);
putValueMap(name, JsonNumberImpl.getJsonNumber(value));
return this;
}
@Override
public JsonObjectBuilder add(String name, long value) {
validateName(name);
putValueMap(name, JsonNumberImpl.getJsonNumber(value));
return this;
}
@Override
public JsonObjectBuilder add(String name, double value) {
validateName(name);
putValueMap(name, JsonNumberImpl.getJsonNumber(value));
return this;
}
@Override
public JsonObjectBuilder add(String name, boolean value) {
validateName(name);
putValueMap(name, value ? JsonValue.TRUE : JsonValue.FALSE);
return this;
}
@Override
public JsonObjectBuilder addNull(String name) {
validateName(name);
putValueMap(name, JsonValue.NULL);
return this;
}
@Override
public JsonObjectBuilder add(String name, JsonObjectBuilder builder) {
validateName(name);
if (builder == null) {
throw new NullPointerException(JsonMessages.OBJBUILDER_OBJECT_BUILDER_NULL());
}
putValueMap(name, builder.build());
return this;
}
@Override
public JsonObjectBuilder add(String name, JsonArrayBuilder builder) {
validateName(name);
if (builder == null) {
throw new NullPointerException(JsonMessages.OBJBUILDER_ARRAY_BUILDER_NULL());
}
putValueMap(name, builder.build());
return this;
}
@Override
public JsonObjectBuilder addAll(JsonObjectBuilder builder) {
if (builder == null) {
throw new NullPointerException(JsonMessages.OBJBUILDER_OBJECT_BUILDER_NULL());
}
if (valueMap == null) {
this.valueMap = new LinkedHashMap<>();
}
this.valueMap.putAll(builder.build());
return this;
}
@Override
public JsonObjectBuilder remove(String name) {
validateName(name);
this.valueMap.remove(name);
return this;
}
@Override
public JsonObject build() {
Map snapshot = (valueMap == null)
? Collections.emptyMap()
: Collections.unmodifiableMap(valueMap);
valueMap = null;
return new JsonObjectImpl(snapshot, bufferPool);
}
private void populate(Map map) {
final Set fields = map.keySet();
for (String field : fields) {
Object value = map.get(field);
if (value != null && value instanceof Optional) {
((Optional) value).ifPresent(v ->
this.valueMap.put(field, MapUtil.handle(v, bufferPool)));
} else {
this.valueMap.put(field, MapUtil.handle(value, bufferPool));
}
}
}
private void putValueMap(String name, JsonValue value) {
if (valueMap == null) {
this.valueMap = new LinkedHashMap<>();
}
valueMap.put(name, value);
}
private void validateName(String name) {
if (name == null) {
throw new NullPointerException(JsonMessages.OBJBUILDER_NAME_NULL());
}
}
private void validateValue(Object value) {
if (value == null) {
throw new NullPointerException(JsonMessages.OBJBUILDER_VALUE_NULL());
}
}
private static final class JsonObjectImpl extends AbstractMap implements JsonObject {
private final Map valueMap; // unmodifiable
private final BufferPool bufferPool;
JsonObjectImpl(Map valueMap, BufferPool bufferPool) {
this.valueMap = valueMap;
this.bufferPool = bufferPool;
}
@Override
public JsonArray getJsonArray(String name) {
return (JsonArray)get(name);
}
@Override
public JsonObject getJsonObject(String name) {
return (JsonObject)get(name);
}
@Override
public JsonNumber getJsonNumber(String name) {
return (JsonNumber)get(name);
}
@Override
public JsonString getJsonString(String name) {
return (JsonString)get(name);
}
@Override
public String getString(String name) {
return getJsonString(name).getString();
}
@Override
public String getString(String name, String defaultValue) {
try {
return getString(name);
} catch (Exception e) {
return defaultValue;
}
}
@Override
public int getInt(String name) {
return getJsonNumber(name).intValue();
}
@Override
public int getInt(String name, int defaultValue) {
try {
return getInt(name);
} catch (Exception e) {
return defaultValue;
}
}
@Override
public boolean getBoolean(String name) {
JsonValue value = get(name);
if (value == null) {
throw new NullPointerException();
} else if (value == JsonValue.TRUE) {
return true;
} else if (value == JsonValue.FALSE) {
return false;
} else {
throw new ClassCastException();
}
}
@Override
public boolean getBoolean(String name, boolean defaultValue) {
try {
return getBoolean(name);
} catch (Exception e) {
return defaultValue;
}
}
@Override
public boolean isNull(String name) {
return get(name).equals(JsonValue.NULL);
}
@Override
public ValueType getValueType() {
return ValueType.OBJECT;
}
@Override
public Set> entrySet() {
return valueMap.entrySet();
}
@Override
public String toString() {
StringWriter sw = new StringWriter();
try (JsonWriter jw = new JsonWriterImpl(sw, bufferPool)) {
jw.write(this);
}
return sw.toString();
}
@Override
public JsonObject asJsonObject() {
return this;
}
@Override
public int size() {
return valueMap.size();
}
@Override
public JsonValue get(Object key) {
return valueMap.get(key);
}
@Override
public boolean containsKey(Object key) {
return valueMap.containsKey(key);
}
}
}
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