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*
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*
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* 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
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* or LICENSE.txt. See the License for the specific
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*
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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:
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package javax.json;
import java.io.
Serializable;
import java.util.
AbstractMap;
import java.util.
Collections;
import java.util.
Set;
/**
* Private implementation of immutable {@link JsonObject}.
*
* @author Lukas Jungmann
*/
final class
EmptyObject extends
AbstractMap<
String,
JsonValue> implements
JsonObject,
Serializable {
private static final long
serialVersionUID = -1461653546889072583L;
@
Override
public
Set<
Entry<
String,
JsonValue>>
entrySet() {
return
Collections.<
Entry<
String,
JsonValue>>
emptySet();
}
@
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) {
return
defaultValue;
}
@
Override
public int
getInt(
String name) {
return
getJsonNumber(
name).
intValue();
}
@
Override
public int
getInt(
String name, int
defaultValue) {
return
defaultValue;
}
@
Override
public boolean
getBoolean(
String name) {
throw new
NullPointerException();
}
@
Override
public boolean
getBoolean(
String name, boolean
defaultValue) {
return
defaultValue;
}
@
Override
public boolean
isNull(
String name) {
throw new
NullPointerException();
}
@
Override
public
ValueType getValueType() {
return
ValueType.
OBJECT;
}
// Preserves singleton property
private
Object readResolve() {
return
JsonValue.
EMPTY_JSON_OBJECT;
}
}