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/*
 * Copyright 2015-2018 Ping Identity Corporation
 * All Rights Reserved.
 */
/*
 * Copyright (C) 2015-2018 Ping Identity Corporation
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License (GPLv2 only)
 * or the terms of the GNU Lesser General Public License (LGPLv2.1 only)
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see .
 */
package com.unboundid.util.json;



import java.io.Serializable;

import com.unboundid.util.NotExtensible;
import com.unboundid.util.ThreadSafety;
import com.unboundid.util.ThreadSafetyLevel;



/**
 * This class provides the base class for data types that can be used as values
 * in JSON objects and as elements in JSON arrays.  The types of values defined
 * in the ECMA-404 specification are:
 * 
    *
  • * The {@code null} value, as implemented in the {@link JSONNull} class. *
  • *
  • * The Boolean {@code true} and {@code false} values, as implemented in the * {@link JSONBoolean} class. *
  • *
  • * Numeric values, as implemented in the {@link JSONNumber} class. *
  • *
  • * String values, as implemented in the {@link JSONString} class. *
  • *
  • * Object values (consisting of zero or more name-value pairs), as * implemented in the {@link JSONObject} class. *
  • *
  • * Arrays of JSON values, as implemented in the {@link JSONArray} class. *
  • *
*/ @NotExtensible() @ThreadSafety(level=ThreadSafetyLevel.INTERFACE_THREADSAFE) public abstract class JSONValue implements Serializable { /** * A serial version UID for this serializable class. */ private static final long serialVersionUID = -4446120225858980451L; /** * Retrieves a hash code for this JSON value. * * @return The hash code for this JSON value. */ public abstract int hashCode(); /** * Indicates whether the provided object is equal to this JSON value. * * @param o The object to compare against this JSON value. * * @return {@code true} if the provided object is considered equal to this * JSON value, or {@code false} if not. */ public abstract boolean equals(Object o); /** * Indicates whether this JSON value is considered equal to the provided JSON * value, subject to the specified constraints. Note that not all constraints * will apply to all data types. * * @param v The JSON value for which to make the * determination. It must not be {@code null}. * @param ignoreFieldNameCase Indicates whether to ignore differences in the * capitalization of JSON field names. * @param ignoreValueCase Indicates whether to ignore differences in * the capitalization of JSON values that * represent strings. * @param ignoreArrayOrder Indicates whether to ignore differences in the * order of elements in JSON arrays. * * @return {@code true} if this JSON value is considered equal to the * provided JSON value (subject to the specified constraints), or * {@code false} if not. */ public abstract boolean equals(JSONValue v, boolean ignoreFieldNameCase, boolean ignoreValueCase, boolean ignoreArrayOrder); /** * Retrieves a string representation of this value as it should appear in a * JSON object, including any necessary quoting, escaping, etc. If the object * containing this value was decoded from a string, then this method will use * the same string representation as in that original object. Otherwise, the * string representation will be constructed. * * @return A string representation of this value as it should appear in a * JSON object. */ public abstract String toString(); /** * Appends a string representation of this value (as it should appear in a * JSON object, including any necessary quoting, escaping, etc.) to the * provided buffer. If the object containing this value was decoded from a * string, then this method will use the same string representation as in that * original object. Otherwise, the string representation will be constructed. * * @param buffer The buffer to which the information should be appended. */ public abstract void toString(StringBuilder buffer); /** * Retrieves a single-line string representation of this value as it should * appear in a JSON object, including any necessary quoting, escaping, etc. * * @return A string representation of this value as it should appear in a * JSON object. */ public abstract String toSingleLineString(); /** * Appends a single-line string representation of this value (as it should * appear in a JSON object, including any necessary quoting, escaping, etc.) * to the provided buffer. * * @param buffer The buffer to which the information should be appended. */ public abstract void toSingleLineString(StringBuilder buffer); /** * Retrieves a normalized string representation of this value. All equivalent * JSON values must have equivalent normalized representations, even if there * are other legal representations for the value. * * @return A normalized string representation of this value. */ public abstract String toNormalizedString(); /** * Appends a normalized string representation of this value to the provided * buffer. All equivalent JSON values must have equivalent normalized * representations, even if there are other legal representations for the * value. * * @param buffer The buffer to which the information should be appended. */ public abstract void toNormalizedString(StringBuilder buffer); /** * Retrieves a normalized string representation of this value using the * provided settings. * * @param ignoreFieldNameCase Indicates whether field names should be * treated in a case-sensitive (if {@code false}) * or case-insensitive (if {@code true}) manner. * @param ignoreValueCase Indicates whether string field values should * be treated in a case-sensitive (if * {@code false}) or case-insensitive (if * {@code true}) manner. * @param ignoreArrayOrder Indicates whether the order of elements in an * array should be considered significant (if * {@code false}) or insignificant (if * {@code true}). * * @return A normalized string representation of this value. */ public abstract String toNormalizedString(boolean ignoreFieldNameCase, boolean ignoreValueCase, boolean ignoreArrayOrder); /** * Appends a normalized string representation of this value to the provided * buffer using the provided settings. * * @param buffer The buffer to which the information should be * appended. * @param ignoreFieldNameCase Indicates whether field names should be * treated in a case-sensitive (if {@code false}) * or case-insensitive (if {@code true}) manner. * @param ignoreValueCase Indicates whether string field values should * be treated in a case-sensitive (if * {@code false}) or case-insensitive (if * {@code true}) manner. * @param ignoreArrayOrder Indicates whether the order of elements in an * array should be considered significant (if * {@code false}) or insignificant (if * {@code true}). */ public abstract void toNormalizedString(StringBuilder buffer, boolean ignoreFieldNameCase, boolean ignoreValueCase, boolean ignoreArrayOrder); /** * Appends this value to the provided JSON buffer. This will not include a * field name, so it should only be used for Boolean value elements in an * array. * * @param buffer The JSON buffer to which this value should be appended. */ public abstract void appendToJSONBuffer(JSONBuffer buffer); /** * Appends a field with the given name and this value to the provided JSON * buffer. * * @param fieldName The name to use for the field. * @param buffer The JSON buffer to which this value should be appended. */ public abstract void appendToJSONBuffer(String fieldName, JSONBuffer buffer); }




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