javax.json.JsonValue Maven / Gradle / Ivy
/*
* 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 javax.json;
/**
* A single value in a JSON expression.
*/
public interface JsonValue {
/**
* The empty JSON object.
*/
JsonObject EMPTY_JSON_OBJECT = new EmptyJsonObject();
/**
* The empty JSON array.
*/
JsonArray EMPTY_JSON_ARRAY = new EmptyJsonArray();
/**
* A constant JsonValue for null values
*/
JsonValue NULL = new JsonValue() {
@Override
public ValueType getValueType() {
return ValueType.NULL;
}
@Override
public boolean equals(final Object obj) {
return obj instanceof JsonValue && getValueType().equals(JsonValue.class.cast(obj).getValueType());
}
@Override
public int hashCode() {
return ValueType.NULL.hashCode();
}
@Override
public String toString() {
return "null";
}
};
/**
* A constant JsonValue for TRUE
*/
JsonValue TRUE = new JsonValue() {
@Override
public ValueType getValueType() {
return ValueType.TRUE;
}
@Override
public boolean equals(final Object obj) {
return obj instanceof JsonValue && getValueType().equals(JsonValue.class.cast(obj).getValueType());
}
@Override
public int hashCode() {
return ValueType.TRUE.hashCode();
}
@Override
public String toString() {
return Boolean.TRUE.toString();
}
};
/**
* A constant JsonValue for FALSE
*/
JsonValue FALSE = new JsonValue() {
@Override
public ValueType getValueType() {
return ValueType.FALSE;
}
@Override
public boolean equals(final Object obj) {
return obj instanceof JsonValue && getValueType().equals(JsonValue.class.cast(obj).getValueType());
}
@Override
public int hashCode() {
return ValueType.FALSE.hashCode();
}
@Override
public String toString() {
return Boolean.FALSE.toString();
}
};
ValueType getValueType();
@Override
String toString();
enum ValueType {
ARRAY,
OBJECT, STRING, NUMBER,
TRUE, FALSE,
NULL
}
default JsonObject asJsonObject() {
return JsonObject.class.cast(this);
}
default JsonArray asJsonArray() {
return JsonArray.class.cast(this);
}
}