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/*
 * 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 org.apache.commons.lang3.builder;

import java.io.Serializable;
import java.lang.reflect.Array;
import java.util.Collection;
import java.util.Map;
import java.util.WeakHashMap;

import org.apache.commons.lang3.ClassUtils;
import org.apache.commons.lang3.ObjectUtils;
import org.apache.commons.lang3.StringEscapeUtils;
import org.apache.commons.lang3.StringUtils;

/**
 * 

Controls String formatting for {@link ToStringBuilder}. * The main public interface is always via ToStringBuilder.

* *

These classes are intended to be used as Singletons. * There is no need to instantiate a new style each time. A program * will generally use one of the predefined constants on this class. * Alternatively, the {@link StandardToStringStyle} class can be used * to set the individual settings. Thus most styles can be achieved * without subclassing.

* *

If required, a subclass can override as many or as few of the * methods as it requires. Each object type (from boolean * to long to Object to int[]) has * its own methods to output it. Most have two versions, detail and summary. * *

For example, the detail version of the array based methods will * output the whole array, whereas the summary method will just output * the array length.

* *

If you want to format the output of certain objects, such as dates, you * must create a subclass and override a method. *

*
 * public class MyStyle extends ToStringStyle {
 *   protected void appendDetail(StringBuffer buffer, String fieldName, Object value) {
 *     if (value instanceof Date) {
 *       value = new SimpleDateFormat("yyyy-MM-dd").format(value);
 *     }
 *     buffer.append(value);
 *   }
 * }
 * 
* * @since 1.0 */ @SuppressWarnings("deprecation") // StringEscapeUtils public abstract class ToStringStyle implements Serializable { /** * Serialization version ID. */ private static final long serialVersionUID = -2587890625525655916L; /** * The default toString style. Using the Person * example from {@link ToStringBuilder}, the output would look like this: * *
     * Person@182f0db[name=John Doe,age=33,smoker=false]
     * 
*/ public static final ToStringStyle DEFAULT_STYLE = new DefaultToStringStyle(); /** * The multi line toString style. Using the Person * example from {@link ToStringBuilder}, the output would look like this: * *
     * Person@182f0db[
     *   name=John Doe
     *   age=33
     *   smoker=false
     * ]
     * 
*/ public static final ToStringStyle MULTI_LINE_STYLE = new MultiLineToStringStyle(); /** * The no field names toString style. Using the * Person example from {@link ToStringBuilder}, the output * would look like this: * *
     * Person@182f0db[John Doe,33,false]
     * 
*/ public static final ToStringStyle NO_FIELD_NAMES_STYLE = new NoFieldNameToStringStyle(); /** * The short prefix toString style. Using the Person example * from {@link ToStringBuilder}, the output would look like this: * *
     * Person[name=John Doe,age=33,smoker=false]
     * 
* * @since 2.1 */ public static final ToStringStyle SHORT_PREFIX_STYLE = new ShortPrefixToStringStyle(); /** * The simple toString style. Using the Person * example from {@link ToStringBuilder}, the output would look like this: * *
     * John Doe,33,false
     * 
*/ public static final ToStringStyle SIMPLE_STYLE = new SimpleToStringStyle(); /** * The no class name toString style. Using the Person * example from {@link ToStringBuilder}, the output would look like this: * *
     * [name=John Doe,age=33,smoker=false]
     * 
* * @since 3.4 */ public static final ToStringStyle NO_CLASS_NAME_STYLE = new NoClassNameToStringStyle(); /** * The JSON toString style. Using the Person example from * {@link ToStringBuilder}, the output would look like this: * *
     * {"name": "John Doe", "age": 33, "smoker": true}
     * 
* * Note: Since field names are mandatory in JSON, this * ToStringStyle will throw an {@link UnsupportedOperationException} if no * field name is passed in while appending. Furthermore This ToStringStyle * will only generate valid JSON if referenced objects also produce JSON * when calling {@code toString()} on them. * * @since 3.4 * @see json.org */ public static final ToStringStyle JSON_STYLE = new JsonToStringStyle(); /** *

* A registry of objects used by reflectionToString methods * to detect cyclical object references and avoid infinite loops. *

*/ private static final ThreadLocal> REGISTRY = new ThreadLocal<>(); /* * Note that objects of this class are generally shared between threads, so * an instance variable would not be suitable here. * * In normal use the registry should always be left empty, because the caller * should call toString() which will clean up. * * See LANG-792 */ /** *

* Returns the registry of objects being traversed by the reflectionToString * methods in the current thread. *

* * @return Set the registry of objects being traversed */ static Map getRegistry() { return REGISTRY.get(); } /** *

* Returns true if the registry contains the given object. * Used by the reflection methods to avoid infinite loops. *

* * @param value * The object to lookup in the registry. * @return boolean true if the registry contains the given * object. */ static boolean isRegistered(final Object value) { final Map m = getRegistry(); return m != null && m.containsKey(value); } /** *

* Registers the given object. Used by the reflection methods to avoid * infinite loops. *

* * @param value * The object to register. */ static void register(final Object value) { if (value != null) { final Map m = getRegistry(); if (m == null) { REGISTRY.set(new WeakHashMap<>()); } getRegistry().put(value, null); } } /** *

* Unregisters the given object. *

* *

* Used by the reflection methods to avoid infinite loops. *

* * @param value * The object to unregister. */ static void unregister(final Object value) { if (value != null) { final Map m = getRegistry(); if (m != null) { m.remove(value); if (m.isEmpty()) { REGISTRY.remove(); } } } } /** * Whether to use the field names, the default is true. */ private boolean useFieldNames = true; /** * Whether to use the class name, the default is true. */ private boolean useClassName = true; /** * Whether to use short class names, the default is false. */ private boolean useShortClassName = false; /** * Whether to use the identity hash code, the default is true. */ private boolean useIdentityHashCode = true; /** * The content start '['. */ private String contentStart = "["; /** * The content end ']'. */ private String contentEnd = "]"; /** * The field name value separator '='. */ private String fieldNameValueSeparator = "="; /** * Whether the field separator should be added before any other fields. */ private boolean fieldSeparatorAtStart = false; /** * Whether the field separator should be added after any other fields. */ private boolean fieldSeparatorAtEnd = false; /** * The field separator ','. */ private String fieldSeparator = ","; /** * The array start '{'. */ private String arrayStart = "{"; /** * The array separator ','. */ private String arraySeparator = ","; /** * The detail for array content. */ private boolean arrayContentDetail = true; /** * The array end '}'. */ private String arrayEnd = "}"; /** * The value to use when fullDetail is null, * the default value is true. */ private boolean defaultFullDetail = true; /** * The null text '<null>'. */ private String nullText = ""; /** * The summary size text start '<size'. */ private String sizeStartText = "'>'
. */ private String sizeEndText = ">"; /** * The summary object text start '<'. */ private String summaryObjectStartText = "<"; /** * The summary object text start '>'. */ private String summaryObjectEndText = ">"; //---------------------------------------------------------------------------- /** *

Constructor.

*/ protected ToStringStyle() { super(); } //---------------------------------------------------------------------------- /** *

Append to the toString the superclass toString.

*

NOTE: It assumes that the toString has been created from the same ToStringStyle.

* *

A null superToString is ignored.

* * @param buffer the StringBuffer to populate * @param superToString the super.toString() * @since 2.0 */ public void appendSuper(final StringBuffer buffer, final String superToString) { appendToString(buffer, superToString); } /** *

Append to the toString another toString.

*

NOTE: It assumes that the toString has been created from the same ToStringStyle.

* *

A null toString is ignored.

* * @param buffer the StringBuffer to populate * @param toString the additional toString * @since 2.0 */ public void appendToString(final StringBuffer buffer, final String toString) { if (toString != null) { final int pos1 = toString.indexOf(contentStart) + contentStart.length(); final int pos2 = toString.lastIndexOf(contentEnd); if (pos1 != pos2 && pos1 >= 0 && pos2 >= 0) { if (fieldSeparatorAtStart) { removeLastFieldSeparator(buffer); } buffer.append(toString, pos1, pos2); appendFieldSeparator(buffer); } } } /** *

Append to the toString the start of data indicator.

* * @param buffer the StringBuffer to populate * @param object the Object to build a toString for */ public void appendStart(final StringBuffer buffer, final Object object) { if (object != null) { appendClassName(buffer, object); appendIdentityHashCode(buffer, object); appendContentStart(buffer); if (fieldSeparatorAtStart) { appendFieldSeparator(buffer); } } } /** *

Append to the toString the end of data indicator.

* * @param buffer the StringBuffer to populate * @param object the Object to build a * toString for. */ public void appendEnd(final StringBuffer buffer, final Object object) { if (!this.fieldSeparatorAtEnd) { removeLastFieldSeparator(buffer); } appendContentEnd(buffer); unregister(object); } /** *

Remove the last field separator from the buffer.

* * @param buffer the StringBuffer to populate * @since 2.0 */ protected void removeLastFieldSeparator(final StringBuffer buffer) { final int len = buffer.length(); final int sepLen = fieldSeparator.length(); if (len > 0 && sepLen > 0 && len >= sepLen) { boolean match = true; for (int i = 0; i < sepLen; i++) { if (buffer.charAt(len - 1 - i) != fieldSeparator.charAt(sepLen - 1 - i)) { match = false; break; } } if (match) { buffer.setLength(len - sepLen); } } } //---------------------------------------------------------------------------- /** *

Append to the toString an Object * value, printing the full toString of the * Object passed in.

* * @param buffer the StringBuffer to populate * @param fieldName the field name * @param value the value to add to the toString * @param fullDetail true for detail, false * for summary info, null for style decides */ public void append(final StringBuffer buffer, final String fieldName, final Object value, final Boolean fullDetail) { appendFieldStart(buffer, fieldName); if (value == null) { appendNullText(buffer, fieldName); } else { appendInternal(buffer, fieldName, value, isFullDetail(fullDetail)); } appendFieldEnd(buffer, fieldName); } /** *

Append to the toString an Object, * correctly interpreting its type.

* *

This method performs the main lookup by Class type to correctly * route arrays, Collections, Maps and * Objects to the appropriate method.

* *

Either detail or summary views can be specified.

* *

If a cycle is detected, an object will be appended with the * Object.toString() format.

* * @param buffer the StringBuffer to populate * @param fieldName the field name, typically not used as already appended * @param value the value to add to the toString, * not null * @param detail output detail or not */ protected void appendInternal(final StringBuffer buffer, final String fieldName, final Object value, final boolean detail) { if (isRegistered(value) && !(value instanceof Number || value instanceof Boolean || value instanceof Character)) { appendCyclicObject(buffer, fieldName, value); return; } register(value); try { if (value instanceof Collection) { if (detail) { appendDetail(buffer, fieldName, (Collection) value); } else { appendSummarySize(buffer, fieldName, ((Collection) value).size()); } } else if (value instanceof Map) { if (detail) { appendDetail(buffer, fieldName, (Map) value); } else { appendSummarySize(buffer, fieldName, ((Map) value).size()); } } else if (value instanceof long[]) { if (detail) { appendDetail(buffer, fieldName, (long[]) value); } else { appendSummary(buffer, fieldName, (long[]) value); } } else if (value instanceof int[]) { if (detail) { appendDetail(buffer, fieldName, (int[]) value); } else { appendSummary(buffer, fieldName, (int[]) value); } } else if (value instanceof short[]) { if (detail) { appendDetail(buffer, fieldName, (short[]) value); } else { appendSummary(buffer, fieldName, (short[]) value); } } else if (value instanceof byte[]) { if (detail) { appendDetail(buffer, fieldName, (byte[]) value); } else { appendSummary(buffer, fieldName, (byte[]) value); } } else if (value instanceof char[]) { if (detail) { appendDetail(buffer, fieldName, (char[]) value); } else { appendSummary(buffer, fieldName, (char[]) value); } } else if (value instanceof double[]) { if (detail) { appendDetail(buffer, fieldName, (double[]) value); } else { appendSummary(buffer, fieldName, (double[]) value); } } else if (value instanceof float[]) { if (detail) { appendDetail(buffer, fieldName, (float[]) value); } else { appendSummary(buffer, fieldName, (float[]) value); } } else if (value instanceof boolean[]) { if (detail) { appendDetail(buffer, fieldName, (boolean[]) value); } else { appendSummary(buffer, fieldName, (boolean[]) value); } } else if (value.getClass().isArray()) { if (detail) { appendDetail(buffer, fieldName, (Object[]) value); } else { appendSummary(buffer, fieldName, (Object[]) value); } } else { if (detail) { appendDetail(buffer, fieldName, value); } else { appendSummary(buffer, fieldName, value); } } } finally { unregister(value); } } /** *

Append to the toString an Object * value that has been detected to participate in a cycle. This * implementation will print the standard string value of the value.

* * @param buffer the StringBuffer to populate * @param fieldName the field name, typically not used as already appended * @param value the value to add to the toString, * not null * * @since 2.2 */ protected void appendCyclicObject(final StringBuffer buffer, final String fieldName, final Object value) { ObjectUtils.identityToString(buffer, value); } /** *

Append to the toString an Object * value, printing the full detail of the Object.

* * @param buffer the StringBuffer to populate * @param fieldName the field name, typically not used as already appended * @param value the value to add to the toString, * not null */ protected void appendDetail(final StringBuffer buffer, final String fieldName, final Object value) { buffer.append(value); } /** *

Append to the toString a Collection.

* * @param buffer the StringBuffer to populate * @param fieldName the field name, typically not used as already appended * @param coll the Collection to add to the * toString, not null */ protected void appendDetail(final StringBuffer buffer, final String fieldName, final Collection coll) { buffer.append(coll); } /** *

Append to the toString a Map.

* * @param buffer the StringBuffer to populate * @param fieldName the field name, typically not used as already appended * @param map the Map to add to the toString, * not null */ protected void appendDetail(final StringBuffer buffer, final String fieldName, final Map map) { buffer.append(map); } /** *

Append to the toString an Object * value, printing a summary of the Object.

* * @param buffer the StringBuffer to populate * @param fieldName the field name, typically not used as already appended * @param value the value to add to the toString, * not null */ protected void appendSummary(final StringBuffer buffer, final String fieldName, final Object value) { buffer.append(summaryObjectStartText); buffer.append(getShortClassName(value.getClass())); buffer.append(summaryObjectEndText); } //---------------------------------------------------------------------------- /** *

Append to the toString a long * value.

* * @param buffer the StringBuffer to populate * @param fieldName the field name * @param value the value to add to the toString */ public void append(final StringBuffer buffer, final String fieldName, final long value) { appendFieldStart(buffer, fieldName); appendDetail(buffer, fieldName, value); appendFieldEnd(buffer, fieldName); } /** *

Append to the toString a long * value.

* * @param buffer the StringBuffer to populate * @param fieldName the field name, typically not used as already appended * @param value the value to add to the toString */ protected void appendDetail(final StringBuffer buffer, final String fieldName, final long value) { buffer.append(value); } //---------------------------------------------------------------------------- /** *

Append to the toString an int * value.

* * @param buffer the StringBuffer to populate * @param fieldName the field name * @param value the value to add to the toString */ public void append(final StringBuffer buffer, final String fieldName, final int value) { appendFieldStart(buffer, fieldName); appendDetail(buffer, fieldName, value); appendFieldEnd(buffer, fieldName); } /** *

Append to the toString an int * value.

* * @param buffer the StringBuffer to populate * @param fieldName the field name, typically not used as already appended * @param value the value to add to the toString */ protected void appendDetail(final StringBuffer buffer, final String fieldName, final int value) { buffer.append(value); } //---------------------------------------------------------------------------- /** *

Append to the toString a short * value.

* * @param buffer the StringBuffer to populate * @param fieldName the field name * @param value the value to add to the toString */ public void append(final StringBuffer buffer, final String fieldName, final short value) { appendFieldStart(buffer, fieldName); appendDetail(buffer, fieldName, value); appendFieldEnd(buffer, fieldName); } /** *

Append to the toString a short * value.

* * @param buffer the StringBuffer to populate * @param fieldName the field name, typically not used as already appended * @param value the value to add to the toString */ protected void appendDetail(final StringBuffer buffer, final String fieldName, final short value) { buffer.append(value); } //---------------------------------------------------------------------------- /** *

Append to the toString a byte * value.

* * @param buffer the StringBuffer to populate * @param fieldName the field name * @param value the value to add to the toString */ public void append(final StringBuffer buffer, final String fieldName, final byte value) { appendFieldStart(buffer, fieldName); appendDetail(buffer, fieldName, value); appendFieldEnd(buffer, fieldName); } /** *

Append to the toString a byte * value.

* * @param buffer the StringBuffer to populate * @param fieldName the field name, typically not used as already appended * @param value the value to add to the toString */ protected void appendDetail(final StringBuffer buffer, final String fieldName, final byte value) { buffer.append(value); } //---------------------------------------------------------------------------- /** *

Append to the toString a char * value.

* * @param buffer the StringBuffer to populate * @param fieldName the field name * @param value the value to add to the toString */ public void append(final StringBuffer buffer, final String fieldName, final char value) { appendFieldStart(buffer, fieldName); appendDetail(buffer, fieldName, value); appendFieldEnd(buffer, fieldName); } /** *

Append to the toString a char * value.

* * @param buffer the StringBuffer to populate * @param fieldName the field name, typically not used as already appended * @param value the value to add to the toString */ protected void appendDetail(final StringBuffer buffer, final String fieldName, final char value) { buffer.append(value); } //---------------------------------------------------------------------------- /** *

Append to the toString a double * value.

* * @param buffer the StringBuffer to populate * @param fieldName the field name * @param value the value to add to the toString */ public void append(final StringBuffer buffer, final String fieldName, final double value) { appendFieldStart(buffer, fieldName); appendDetail(buffer, fieldName, value); appendFieldEnd(buffer, fieldName); } /** *

Append to the toString a double * value.

* * @param buffer the StringBuffer to populate * @param fieldName the field name, typically not used as already appended * @param value the value to add to the toString */ protected void appendDetail(final StringBuffer buffer, final String fieldName, final double value) { buffer.append(value); } //---------------------------------------------------------------------------- /** *

Append to the toString a float * value.

* * @param buffer the StringBuffer to populate * @param fieldName the field name * @param value the value to add to the toString */ public void append(final StringBuffer buffer, final String fieldName, final float value) { appendFieldStart(buffer, fieldName); appendDetail(buffer, fieldName, value); appendFieldEnd(buffer, fieldName); } /** *

Append to the toString a float * value.

* * @param buffer the StringBuffer to populate * @param fieldName the field name, typically not used as already appended * @param value the value to add to the toString */ protected void appendDetail(final StringBuffer buffer, final String fieldName, final float value) { buffer.append(value); } //---------------------------------------------------------------------------- /** *

Append to the toString a boolean * value.

* * @param buffer the StringBuffer to populate * @param fieldName the field name * @param value the value to add to the toString */ public void append(final StringBuffer buffer, final String fieldName, final boolean value) { appendFieldStart(buffer, fieldName); appendDetail(buffer, fieldName, value); appendFieldEnd(buffer, fieldName); } /** *

Append to the toString a boolean * value.

* * @param buffer the StringBuffer to populate * @param fieldName the field name, typically not used as already appended * @param value the value to add to the toString */ protected void appendDetail(final StringBuffer buffer, final String fieldName, final boolean value) { buffer.append(value); } /** *

Append to the toString an Object * array.

* * @param buffer the StringBuffer to populate * @param fieldName the field name * @param array the array to add to the toString * @param fullDetail true for detail, false * for summary info, null for style decides */ public void append(final StringBuffer buffer, final String fieldName, final Object[] array, final Boolean fullDetail) { appendFieldStart(buffer, fieldName); if (array == null) { appendNullText(buffer, fieldName); } else if (isFullDetail(fullDetail)) { appendDetail(buffer, fieldName, array); } else { appendSummary(buffer, fieldName, array); } appendFieldEnd(buffer, fieldName); } //---------------------------------------------------------------------------- /** *

Append to the toString the detail of an * Object array.

* * @param buffer the StringBuffer to populate * @param fieldName the field name, typically not used as already appended * @param array the array to add to the toString, * not null */ protected void appendDetail(final StringBuffer buffer, final String fieldName, final Object[] array) { buffer.append(arrayStart); for (int i = 0; i < array.length; i++) { final Object item = array[i]; if (i > 0) { buffer.append(arraySeparator); } if (item == null) { appendNullText(buffer, fieldName); } else { appendInternal(buffer, fieldName, item, arrayContentDetail); } } buffer.append(arrayEnd); } /** *

Append to the toString the detail of an array type.

* * @param buffer the StringBuffer to populate * @param fieldName the field name, typically not used as already appended * @param array the array to add to the toString, * not null * @since 2.0 */ protected void reflectionAppendArrayDetail(final StringBuffer buffer, final String fieldName, final Object array) { buffer.append(arrayStart); final int length = Array.getLength(array); for (int i = 0; i < length; i++) { final Object item = Array.get(array, i); if (i > 0) { buffer.append(arraySeparator); } if (item == null) { appendNullText(buffer, fieldName); } else { appendInternal(buffer, fieldName, item, arrayContentDetail); } } buffer.append(arrayEnd); } /** *

Append to the toString a summary of an * Object array.

* * @param buffer the StringBuffer to populate * @param fieldName the field name, typically not used as already appended * @param array the array to add to the toString, * not null */ protected void appendSummary(final StringBuffer buffer, final String fieldName, final Object[] array) { appendSummarySize(buffer, fieldName, array.length); } //---------------------------------------------------------------------------- /** *

Append to the toString a long * array.

* * @param buffer the StringBuffer to populate * @param fieldName the field name * @param array the array to add to the toString * @param fullDetail true for detail, false * for summary info, null for style decides */ public void append(final StringBuffer buffer, final String fieldName, final long[] array, final Boolean fullDetail) { appendFieldStart(buffer, fieldName); if (array == null) { appendNullText(buffer, fieldName); } else if (isFullDetail(fullDetail)) { appendDetail(buffer, fieldName, array); } else { appendSummary(buffer, fieldName, array); } appendFieldEnd(buffer, fieldName); } /** *

Append to the toString the detail of a * long array.

* * @param buffer the StringBuffer to populate * @param fieldName the field name, typically not used as already appended * @param array the array to add to the toString, * not null */ protected void appendDetail(final StringBuffer buffer, final String fieldName, final long[] array) { buffer.append(arrayStart); for (int i = 0; i < array.length; i++) { if (i > 0) { buffer.append(arraySeparator); } appendDetail(buffer, fieldName, array[i]); } buffer.append(arrayEnd); } /** *

Append to the toString a summary of a * long array.

* * @param buffer the StringBuffer to populate * @param fieldName the field name, typically not used as already appended * @param array the array to add to the toString, * not null */ protected void appendSummary(final StringBuffer buffer, final String fieldName, final long[] array) { appendSummarySize(buffer, fieldName, array.length); } //---------------------------------------------------------------------------- /** *

Append to the toString an int * array.

* * @param buffer the StringBuffer to populate * @param fieldName the field name * @param array the array to add to the toString * @param fullDetail true for detail, false * for summary info, null for style decides */ public void append(final StringBuffer buffer, final String fieldName, final int[] array, final Boolean fullDetail) { appendFieldStart(buffer, fieldName); if (array == null) { appendNullText(buffer, fieldName); } else if (isFullDetail(fullDetail)) { appendDetail(buffer, fieldName, array); } else { appendSummary(buffer, fieldName, array); } appendFieldEnd(buffer, fieldName); } /** *

Append to the toString the detail of an * int array.

* * @param buffer the StringBuffer to populate * @param fieldName the field name, typically not used as already appended * @param array the array to add to the toString, * not null */ protected void appendDetail(final StringBuffer buffer, final String fieldName, final int[] array) { buffer.append(arrayStart); for (int i = 0; i < array.length; i++) { if (i > 0) { buffer.append(arraySeparator); } appendDetail(buffer, fieldName, array[i]); } buffer.append(arrayEnd); } /** *

Append to the toString a summary of an * int array.

* * @param buffer the StringBuffer to populate * @param fieldName the field name, typically not used as already appended * @param array the array to add to the toString, * not null */ protected void appendSummary(final StringBuffer buffer, final String fieldName, final int[] array) { appendSummarySize(buffer, fieldName, array.length); } //---------------------------------------------------------------------------- /** *

Append to the toString a short * array.

* * @param buffer the StringBuffer to populate * @param fieldName the field name * @param array the array to add to the toString * @param fullDetail true for detail, false * for summary info, null for style decides */ public void append(final StringBuffer buffer, final String fieldName, final short[] array, final Boolean fullDetail) { appendFieldStart(buffer, fieldName); if (array == null) { appendNullText(buffer, fieldName); } else if (isFullDetail(fullDetail)) { appendDetail(buffer, fieldName, array); } else { appendSummary(buffer, fieldName, array); } appendFieldEnd(buffer, fieldName); } /** *

Append to the toString the detail of a * short array.

* * @param buffer the StringBuffer to populate * @param fieldName the field name, typically not used as already appended * @param array the array to add to the toString, * not null */ protected void appendDetail(final StringBuffer buffer, final String fieldName, final short[] array) { buffer.append(arrayStart); for (int i = 0; i < array.length; i++) { if (i > 0) { buffer.append(arraySeparator); } appendDetail(buffer, fieldName, array[i]); } buffer.append(arrayEnd); } /** *

Append to the toString a summary of a * short array.

* * @param buffer the StringBuffer to populate * @param fieldName the field name, typically not used as already appended * @param array the array to add to the toString, * not null */ protected void appendSummary(final StringBuffer buffer, final String fieldName, final short[] array) { appendSummarySize(buffer, fieldName, array.length); } //---------------------------------------------------------------------------- /** *

Append to the toString a byte * array.

* * @param buffer the StringBuffer to populate * @param fieldName the field name * @param array the array to add to the toString * @param fullDetail true for detail, false * for summary info, null for style decides */ public void append(final StringBuffer buffer, final String fieldName, final byte[] array, final Boolean fullDetail) { appendFieldStart(buffer, fieldName); if (array == null) { appendNullText(buffer, fieldName); } else if (isFullDetail(fullDetail)) { appendDetail(buffer, fieldName, array); } else { appendSummary(buffer, fieldName, array); } appendFieldEnd(buffer, fieldName); } /** *

Append to the toString the detail of a * byte array.

* * @param buffer the StringBuffer to populate * @param fieldName the field name, typically not used as already appended * @param array the array to add to the toString, * not null */ protected void appendDetail(final StringBuffer buffer, final String fieldName, final byte[] array) { buffer.append(arrayStart); for (int i = 0; i < array.length; i++) { if (i > 0) { buffer.append(arraySeparator); } appendDetail(buffer, fieldName, array[i]); } buffer.append(arrayEnd); } /** *

Append to the toString a summary of a * byte array.

* * @param buffer the StringBuffer to populate * @param fieldName the field name, typically not used as already appended * @param array the array to add to the toString, * not null */ protected void appendSummary(final StringBuffer buffer, final String fieldName, final byte[] array) { appendSummarySize(buffer, fieldName, array.length); } //---------------------------------------------------------------------------- /** *

Append to the toString a char * array.

* * @param buffer the StringBuffer to populate * @param fieldName the field name * @param array the array to add to the toString * @param fullDetail true for detail, false * for summary info, null for style decides */ public void append(final StringBuffer buffer, final String fieldName, final char[] array, final Boolean fullDetail) { appendFieldStart(buffer, fieldName); if (array == null) { appendNullText(buffer, fieldName); } else if (isFullDetail(fullDetail)) { appendDetail(buffer, fieldName, array); } else { appendSummary(buffer, fieldName, array); } appendFieldEnd(buffer, fieldName); } /** *

Append to the toString the detail of a * char array.

* * @param buffer the StringBuffer to populate * @param fieldName the field name, typically not used as already appended * @param array the array to add to the toString, * not null */ protected void appendDetail(final StringBuffer buffer, final String fieldName, final char[] array) { buffer.append(arrayStart); for (int i = 0; i < array.length; i++) { if (i > 0) { buffer.append(arraySeparator); } appendDetail(buffer, fieldName, array[i]); } buffer.append(arrayEnd); } /** *

Append to the toString a summary of a * char array.

* * @param buffer the StringBuffer to populate * @param fieldName the field name, typically not used as already appended * @param array the array to add to the toString, * not null */ protected void appendSummary(final StringBuffer buffer, final String fieldName, final char[] array) { appendSummarySize(buffer, fieldName, array.length); } //---------------------------------------------------------------------------- /** *

Append to the toString a double * array.

* * @param buffer the StringBuffer to populate * @param fieldName the field name * @param array the array to add to the toString * @param fullDetail true for detail, false * for summary info, null for style decides */ public void append(final StringBuffer buffer, final String fieldName, final double[] array, final Boolean fullDetail) { appendFieldStart(buffer, fieldName); if (array == null) { appendNullText(buffer, fieldName); } else if (isFullDetail(fullDetail)) { appendDetail(buffer, fieldName, array); } else { appendSummary(buffer, fieldName, array); } appendFieldEnd(buffer, fieldName); } /** *

Append to the toString the detail of a * double array.

* * @param buffer the StringBuffer to populate * @param fieldName the field name, typically not used as already appended * @param array the array to add to the toString, * not null */ protected void appendDetail(final StringBuffer buffer, final String fieldName, final double[] array) { buffer.append(arrayStart); for (int i = 0; i < array.length; i++) { if (i > 0) { buffer.append(arraySeparator); } appendDetail(buffer, fieldName, array[i]); } buffer.append(arrayEnd); } /** *

Append to the toString a summary of a * double array.

* * @param buffer the StringBuffer to populate * @param fieldName the field name, typically not used as already appended * @param array the array to add to the toString, * not null */ protected void appendSummary(final StringBuffer buffer, final String fieldName, final double[] array) { appendSummarySize(buffer, fieldName, array.length); } //---------------------------------------------------------------------------- /** *

Append to the toString a float * array.

* * @param buffer the StringBuffer to populate * @param fieldName the field name * @param array the array to add to the toString * @param fullDetail true for detail, false * for summary info, null for style decides */ public void append(final StringBuffer buffer, final String fieldName, final float[] array, final Boolean fullDetail) { appendFieldStart(buffer, fieldName); if (array == null) { appendNullText(buffer, fieldName); } else if (isFullDetail(fullDetail)) { appendDetail(buffer, fieldName, array); } else { appendSummary(buffer, fieldName, array); } appendFieldEnd(buffer, fieldName); } /** *

Append to the toString the detail of a * float array.

* * @param buffer the StringBuffer to populate * @param fieldName the field name, typically not used as already appended * @param array the array to add to the toString, * not null */ protected void appendDetail(final StringBuffer buffer, final String fieldName, final float[] array) { buffer.append(arrayStart); for (int i = 0; i < array.length; i++) { if (i > 0) { buffer.append(arraySeparator); } appendDetail(buffer, fieldName, array[i]); } buffer.append(arrayEnd); } /** *

Append to the toString a summary of a * float array.

* * @param buffer the StringBuffer to populate * @param fieldName the field name, typically not used as already appended * @param array the array to add to the toString, * not null */ protected void appendSummary(final StringBuffer buffer, final String fieldName, final float[] array) { appendSummarySize(buffer, fieldName, array.length); } //---------------------------------------------------------------------------- /** *

Append to the toString a boolean * array.

* * @param buffer the StringBuffer to populate * @param fieldName the field name * @param array the array to add to the toString * @param fullDetail true for detail, false * for summary info, null for style decides */ public void append(final StringBuffer buffer, final String fieldName, final boolean[] array, final Boolean fullDetail) { appendFieldStart(buffer, fieldName); if (array == null) { appendNullText(buffer, fieldName); } else if (isFullDetail(fullDetail)) { appendDetail(buffer, fieldName, array); } else { appendSummary(buffer, fieldName, array); } appendFieldEnd(buffer, fieldName); } /** *

Append to the toString the detail of a * boolean array.

* * @param buffer the StringBuffer to populate * @param fieldName the field name, typically not used as already appended * @param array the array to add to the toString, * not null */ protected void appendDetail(final StringBuffer buffer, final String fieldName, final boolean[] array) { buffer.append(arrayStart); for (int i = 0; i < array.length; i++) { if (i > 0) { buffer.append(arraySeparator); } appendDetail(buffer, fieldName, array[i]); } buffer.append(arrayEnd); } /** *

Append to the toString a summary of a * boolean array.

* * @param buffer the StringBuffer to populate * @param fieldName the field name, typically not used as already appended * @param array the array to add to the toString, * not null */ protected void appendSummary(final StringBuffer buffer, final String fieldName, final boolean[] array) { appendSummarySize(buffer, fieldName, array.length); } //---------------------------------------------------------------------------- /** *

Append to the toString the class name.

* * @param buffer the StringBuffer to populate * @param object the Object whose name to output */ protected void appendClassName(final StringBuffer buffer, final Object object) { if (useClassName && object != null) { register(object); if (useShortClassName) { buffer.append(getShortClassName(object.getClass())); } else { buffer.append(object.getClass().getName()); } } } /** *

Append the {@link System#identityHashCode(java.lang.Object)}.

* * @param buffer the StringBuffer to populate * @param object the Object whose id to output */ protected void appendIdentityHashCode(final StringBuffer buffer, final Object object) { if (this.isUseIdentityHashCode() && object!=null) { register(object); buffer.append('@'); buffer.append(Integer.toHexString(System.identityHashCode(object))); } } /** *

Append to the toString the content start.

* * @param buffer the StringBuffer to populate */ protected void appendContentStart(final StringBuffer buffer) { buffer.append(contentStart); } /** *

Append to the toString the content end.

* * @param buffer the StringBuffer to populate */ protected void appendContentEnd(final StringBuffer buffer) { buffer.append(contentEnd); } /** *

Append to the toString an indicator for null.

* *

The default indicator is '<null>'.

* * @param buffer the StringBuffer to populate * @param fieldName the field name, typically not used as already appended */ protected void appendNullText(final StringBuffer buffer, final String fieldName) { buffer.append(nullText); } /** *

Append to the toString the field separator.

* * @param buffer the StringBuffer to populate */ protected void appendFieldSeparator(final StringBuffer buffer) { buffer.append(fieldSeparator); } /** *

Append to the toString the field start.

* * @param buffer the StringBuffer to populate * @param fieldName the field name */ protected void appendFieldStart(final StringBuffer buffer, final String fieldName) { if (useFieldNames && fieldName != null) { buffer.append(fieldName); buffer.append(fieldNameValueSeparator); } } /** *

Append to the toString the field end.

* * @param buffer the StringBuffer to populate * @param fieldName the field name, typically not used as already appended */ protected void appendFieldEnd(final StringBuffer buffer, final String fieldName) { appendFieldSeparator(buffer); } /** *

Append to the toString a size summary.

* *

The size summary is used to summarize the contents of * Collections, Maps and arrays.

* *

The output consists of a prefix, the passed in size * and a suffix.

* *

The default format is '<size=n>'.

* * @param buffer the StringBuffer to populate * @param fieldName the field name, typically not used as already appended * @param size the size to append */ protected void appendSummarySize(final StringBuffer buffer, final String fieldName, final int size) { buffer.append(sizeStartText); buffer.append(size); buffer.append(sizeEndText); } /** *

Is this field to be output in full detail.

* *

This method converts a detail request into a detail level. * The calling code may request full detail (true), * but a subclass might ignore that and always return * false. The calling code may pass in * null indicating that it doesn't care about * the detail level. In this case the default detail level is * used.

* * @param fullDetailRequest the detail level requested * @return whether full detail is to be shown */ protected boolean isFullDetail(final Boolean fullDetailRequest) { if (fullDetailRequest == null) { return defaultFullDetail; } return fullDetailRequest.booleanValue(); } /** *

Gets the short class name for a class.

* *

The short class name is the classname excluding * the package name.

* * @param cls the Class to get the short name of * @return the short name */ protected String getShortClassName(final Class cls) { return ClassUtils.getShortClassName(cls); } // Setters and getters for the customizable parts of the style // These methods are not expected to be overridden, except to make public // (They are not public so that immutable subclasses can be written) //--------------------------------------------------------------------- /** *

Gets whether to use the class name.

* * @return the current useClassName flag */ protected boolean isUseClassName() { return useClassName; } /** *

Sets whether to use the class name.

* * @param useClassName the new useClassName flag */ protected void setUseClassName(final boolean useClassName) { this.useClassName = useClassName; } //--------------------------------------------------------------------- /** *

Gets whether to output short or long class names.

* * @return the current useShortClassName flag * @since 2.0 */ protected boolean isUseShortClassName() { return useShortClassName; } /** *

Sets whether to output short or long class names.

* * @param useShortClassName the new useShortClassName flag * @since 2.0 */ protected void setUseShortClassName(final boolean useShortClassName) { this.useShortClassName = useShortClassName; } //--------------------------------------------------------------------- /** *

Gets whether to use the identity hash code.

* * @return the current useIdentityHashCode flag */ protected boolean isUseIdentityHashCode() { return useIdentityHashCode; } /** *

Sets whether to use the identity hash code.

* * @param useIdentityHashCode the new useIdentityHashCode flag */ protected void setUseIdentityHashCode(final boolean useIdentityHashCode) { this.useIdentityHashCode = useIdentityHashCode; } //--------------------------------------------------------------------- /** *

Gets whether to use the field names passed in.

* * @return the current useFieldNames flag */ protected boolean isUseFieldNames() { return useFieldNames; } /** *

Sets whether to use the field names passed in.

* * @param useFieldNames the new useFieldNames flag */ protected void setUseFieldNames(final boolean useFieldNames) { this.useFieldNames = useFieldNames; } //--------------------------------------------------------------------- /** *

Gets whether to use full detail when the caller doesn't * specify.

* * @return the current defaultFullDetail flag */ protected boolean isDefaultFullDetail() { return defaultFullDetail; } /** *

Sets whether to use full detail when the caller doesn't * specify.

* * @param defaultFullDetail the new defaultFullDetail flag */ protected void setDefaultFullDetail(final boolean defaultFullDetail) { this.defaultFullDetail = defaultFullDetail; } //--------------------------------------------------------------------- /** *

Gets whether to output array content detail.

* * @return the current array content detail setting */ protected boolean isArrayContentDetail() { return arrayContentDetail; } /** *

Sets whether to output array content detail.

* * @param arrayContentDetail the new arrayContentDetail flag */ protected void setArrayContentDetail(final boolean arrayContentDetail) { this.arrayContentDetail = arrayContentDetail; } //--------------------------------------------------------------------- /** *

Gets the array start text.

* * @return the current array start text */ protected String getArrayStart() { return arrayStart; } /** *

Sets the array start text.

* *

null is accepted, but will be converted to * an empty String.

* * @param arrayStart the new array start text */ protected void setArrayStart(String arrayStart) { if (arrayStart == null) { arrayStart = StringUtils.EMPTY; } this.arrayStart = arrayStart; } //--------------------------------------------------------------------- /** *

Gets the array end text.

* * @return the current array end text */ protected String getArrayEnd() { return arrayEnd; } /** *

Sets the array end text.

* *

null is accepted, but will be converted to * an empty String.

* * @param arrayEnd the new array end text */ protected void setArrayEnd(String arrayEnd) { if (arrayEnd == null) { arrayEnd = StringUtils.EMPTY; } this.arrayEnd = arrayEnd; } //--------------------------------------------------------------------- /** *

Gets the array separator text.

* * @return the current array separator text */ protected String getArraySeparator() { return arraySeparator; } /** *

Sets the array separator text.

* *

null is accepted, but will be converted to * an empty String.

* * @param arraySeparator the new array separator text */ protected void setArraySeparator(String arraySeparator) { if (arraySeparator == null) { arraySeparator = StringUtils.EMPTY; } this.arraySeparator = arraySeparator; } //--------------------------------------------------------------------- /** *

Gets the content start text.

* * @return the current content start text */ protected String getContentStart() { return contentStart; } /** *

Sets the content start text.

* *

null is accepted, but will be converted to * an empty String.

* * @param contentStart the new content start text */ protected void setContentStart(String contentStart) { if (contentStart == null) { contentStart = StringUtils.EMPTY; } this.contentStart = contentStart; } //--------------------------------------------------------------------- /** *

Gets the content end text.

* * @return the current content end text */ protected String getContentEnd() { return contentEnd; } /** *

Sets the content end text.

* *

null is accepted, but will be converted to * an empty String.

* * @param contentEnd the new content end text */ protected void setContentEnd(String contentEnd) { if (contentEnd == null) { contentEnd = StringUtils.EMPTY; } this.contentEnd = contentEnd; } //--------------------------------------------------------------------- /** *

Gets the field name value separator text.

* * @return the current field name value separator text */ protected String getFieldNameValueSeparator() { return fieldNameValueSeparator; } /** *

Sets the field name value separator text.

* *

null is accepted, but will be converted to * an empty String.

* * @param fieldNameValueSeparator the new field name value separator text */ protected void setFieldNameValueSeparator(String fieldNameValueSeparator) { if (fieldNameValueSeparator == null) { fieldNameValueSeparator = StringUtils.EMPTY; } this.fieldNameValueSeparator = fieldNameValueSeparator; } //--------------------------------------------------------------------- /** *

Gets the field separator text.

* * @return the current field separator text */ protected String getFieldSeparator() { return fieldSeparator; } /** *

Sets the field separator text.

* *

null is accepted, but will be converted to * an empty String.

* * @param fieldSeparator the new field separator text */ protected void setFieldSeparator(String fieldSeparator) { if (fieldSeparator == null) { fieldSeparator = StringUtils.EMPTY; } this.fieldSeparator = fieldSeparator; } //--------------------------------------------------------------------- /** *

Gets whether the field separator should be added at the start * of each buffer.

* * @return the fieldSeparatorAtStart flag * @since 2.0 */ protected boolean isFieldSeparatorAtStart() { return fieldSeparatorAtStart; } /** *

Sets whether the field separator should be added at the start * of each buffer.

* * @param fieldSeparatorAtStart the fieldSeparatorAtStart flag * @since 2.0 */ protected void setFieldSeparatorAtStart(final boolean fieldSeparatorAtStart) { this.fieldSeparatorAtStart = fieldSeparatorAtStart; } //--------------------------------------------------------------------- /** *

Gets whether the field separator should be added at the end * of each buffer.

* * @return fieldSeparatorAtEnd flag * @since 2.0 */ protected boolean isFieldSeparatorAtEnd() { return fieldSeparatorAtEnd; } /** *

Sets whether the field separator should be added at the end * of each buffer.

* * @param fieldSeparatorAtEnd the fieldSeparatorAtEnd flag * @since 2.0 */ protected void setFieldSeparatorAtEnd(final boolean fieldSeparatorAtEnd) { this.fieldSeparatorAtEnd = fieldSeparatorAtEnd; } //--------------------------------------------------------------------- /** *

Gets the text to output when null found.

* * @return the current text to output when null found */ protected String getNullText() { return nullText; } /** *

Sets the text to output when null found.

* *

null is accepted, but will be converted to * an empty String.

* * @param nullText the new text to output when null found */ protected void setNullText(String nullText) { if (nullText == null) { nullText = StringUtils.EMPTY; } this.nullText = nullText; } //--------------------------------------------------------------------- /** *

Gets the start text to output when a Collection, * Map or array size is output.

* *

This is output before the size value.

* * @return the current start of size text */ protected String getSizeStartText() { return sizeStartText; } /** *

Sets the start text to output when a Collection, * Map or array size is output.

* *

This is output before the size value.

* *

null is accepted, but will be converted to * an empty String.

* * @param sizeStartText the new start of size text */ protected void setSizeStartText(String sizeStartText) { if (sizeStartText == null) { sizeStartText = StringUtils.EMPTY; } this.sizeStartText = sizeStartText; } //--------------------------------------------------------------------- /** *

Gets the end text to output when a Collection, * Map or array size is output.

* *

This is output after the size value.

* * @return the current end of size text */ protected String getSizeEndText() { return sizeEndText; } /** *

Sets the end text to output when a Collection, * Map or array size is output.

* *

This is output after the size value.

* *

null is accepted, but will be converted to * an empty String.

* * @param sizeEndText the new end of size text */ protected void setSizeEndText(String sizeEndText) { if (sizeEndText == null) { sizeEndText = StringUtils.EMPTY; } this.sizeEndText = sizeEndText; } //--------------------------------------------------------------------- /** *

Gets the start text to output when an Object is * output in summary mode.

* *

This is output before the size value.

* * @return the current start of summary text */ protected String getSummaryObjectStartText() { return summaryObjectStartText; } /** *

Sets the start text to output when an Object is * output in summary mode.

* *

This is output before the size value.

* *

null is accepted, but will be converted to * an empty String.

* * @param summaryObjectStartText the new start of summary text */ protected void setSummaryObjectStartText(String summaryObjectStartText) { if (summaryObjectStartText == null) { summaryObjectStartText = StringUtils.EMPTY; } this.summaryObjectStartText = summaryObjectStartText; } //--------------------------------------------------------------------- /** *

Gets the end text to output when an Object is * output in summary mode.

* *

This is output after the size value.

* * @return the current end of summary text */ protected String getSummaryObjectEndText() { return summaryObjectEndText; } /** *

Sets the end text to output when an Object is * output in summary mode.

* *

This is output after the size value.

* *

null is accepted, but will be converted to * an empty String.

* * @param summaryObjectEndText the new end of summary text */ protected void setSummaryObjectEndText(String summaryObjectEndText) { if (summaryObjectEndText == null) { summaryObjectEndText = StringUtils.EMPTY; } this.summaryObjectEndText = summaryObjectEndText; } //---------------------------------------------------------------------------- /** *

Default ToStringStyle.

* *

This is an inner class rather than using * StandardToStringStyle to ensure its immutability.

*/ private static final class DefaultToStringStyle extends ToStringStyle { /** * Required for serialization support. * * @see java.io.Serializable */ private static final long serialVersionUID = 1L; /** *

Constructor.

* *

Use the static constant rather than instantiating.

*/ DefaultToStringStyle() { super(); } /** *

Ensure Singleton after serialization.

* * @return the singleton */ private Object readResolve() { return DEFAULT_STYLE; } } //---------------------------------------------------------------------------- /** *

ToStringStyle that does not print out * the field names.

* *

This is an inner class rather than using * StandardToStringStyle to ensure its immutability. */ private static final class NoFieldNameToStringStyle extends ToStringStyle { private static final long serialVersionUID = 1L; /** *

Constructor.

* *

Use the static constant rather than instantiating.

*/ NoFieldNameToStringStyle() { super(); this.setUseFieldNames(false); } /** *

Ensure Singleton after serialization.

* * @return the singleton */ private Object readResolve() { return NO_FIELD_NAMES_STYLE; } } //---------------------------------------------------------------------------- /** *

ToStringStyle that prints out the short * class name and no identity hashcode.

* *

This is an inner class rather than using * StandardToStringStyle to ensure its immutability.

*/ private static final class ShortPrefixToStringStyle extends ToStringStyle { private static final long serialVersionUID = 1L; /** *

Constructor.

* *

Use the static constant rather than instantiating.

*/ ShortPrefixToStringStyle() { super(); this.setUseShortClassName(true); this.setUseIdentityHashCode(false); } /** *

Ensure Singleton after serialization.

* @return the singleton */ private Object readResolve() { return SHORT_PREFIX_STYLE; } } //---------------------------------------------------------------------------- /** *

ToStringStyle that does not print out the * classname, identity hashcode, content start or field name.

* *

This is an inner class rather than using * StandardToStringStyle to ensure its immutability.

*/ private static final class SimpleToStringStyle extends ToStringStyle { private static final long serialVersionUID = 1L; /** *

Constructor.

* *

Use the static constant rather than instantiating.

*/ SimpleToStringStyle() { super(); this.setUseClassName(false); this.setUseIdentityHashCode(false); this.setUseFieldNames(false); this.setContentStart(StringUtils.EMPTY); this.setContentEnd(StringUtils.EMPTY); } /** *

Ensure Singleton after serialization.

* @return the singleton */ private Object readResolve() { return SIMPLE_STYLE; } } //---------------------------------------------------------------------------- /** *

ToStringStyle that outputs on multiple lines.

* *

This is an inner class rather than using * StandardToStringStyle to ensure its immutability.

*/ private static final class MultiLineToStringStyle extends ToStringStyle { private static final long serialVersionUID = 1L; /** *

Constructor.

* *

Use the static constant rather than instantiating.

*/ MultiLineToStringStyle() { super(); this.setContentStart("["); this.setFieldSeparator(System.lineSeparator() + " "); this.setFieldSeparatorAtStart(true); this.setContentEnd(System.lineSeparator() + "]"); } /** *

Ensure Singleton after serialization.

* * @return the singleton */ private Object readResolve() { return MULTI_LINE_STYLE; } } //---------------------------------------------------------------------------- /** *

ToStringStyle that does not print out the classname * and identity hash code but prints content start and field names.

* *

This is an inner class rather than using * StandardToStringStyle to ensure its immutability.

*/ private static final class NoClassNameToStringStyle extends ToStringStyle { private static final long serialVersionUID = 1L; /** *

Constructor.

* *

Use the static constant rather than instantiating.

*/ NoClassNameToStringStyle() { super(); this.setUseClassName(false); this.setUseIdentityHashCode(false); } /** *

Ensure Singleton after serialization.

* * @return the singleton */ private Object readResolve() { return NO_CLASS_NAME_STYLE; } } // ---------------------------------------------------------------------------- /** *

* ToStringStyle that outputs with JSON format. *

* *

* This is an inner class rather than using * StandardToStringStyle to ensure its immutability. *

* * @since 3.4 * @see json.org */ private static final class JsonToStringStyle extends ToStringStyle { private static final long serialVersionUID = 1L; private static final String FIELD_NAME_QUOTE = "\""; /** *

* Constructor. *

* *

* Use the static constant rather than instantiating. *

*/ JsonToStringStyle() { super(); this.setUseClassName(false); this.setUseIdentityHashCode(false); this.setContentStart("{"); this.setContentEnd("}"); this.setArrayStart("["); this.setArrayEnd("]"); this.setFieldSeparator(","); this.setFieldNameValueSeparator(":"); this.setNullText("null"); this.setSummaryObjectStartText("\"<"); this.setSummaryObjectEndText(">\""); this.setSizeStartText("\"\""); } @Override public void append(final StringBuffer buffer, final String fieldName, final Object[] array, final Boolean fullDetail) { if (fieldName == null) { throw new UnsupportedOperationException( "Field names are mandatory when using JsonToStringStyle"); } if (!isFullDetail(fullDetail)){ throw new UnsupportedOperationException( "FullDetail must be true when using JsonToStringStyle"); } super.append(buffer, fieldName, array, fullDetail); } @Override public void append(final StringBuffer buffer, final String fieldName, final long[] array, final Boolean fullDetail) { if (fieldName == null) { throw new UnsupportedOperationException( "Field names are mandatory when using JsonToStringStyle"); } if (!isFullDetail(fullDetail)){ throw new UnsupportedOperationException( "FullDetail must be true when using JsonToStringStyle"); } super.append(buffer, fieldName, array, fullDetail); } @Override public void append(final StringBuffer buffer, final String fieldName, final int[] array, final Boolean fullDetail) { if (fieldName == null) { throw new UnsupportedOperationException( "Field names are mandatory when using JsonToStringStyle"); } if (!isFullDetail(fullDetail)){ throw new UnsupportedOperationException( "FullDetail must be true when using JsonToStringStyle"); } super.append(buffer, fieldName, array, fullDetail); } @Override public void append(final StringBuffer buffer, final String fieldName, final short[] array, final Boolean fullDetail) { if (fieldName == null) { throw new UnsupportedOperationException( "Field names are mandatory when using JsonToStringStyle"); } if (!isFullDetail(fullDetail)){ throw new UnsupportedOperationException( "FullDetail must be true when using JsonToStringStyle"); } super.append(buffer, fieldName, array, fullDetail); } @Override public void append(final StringBuffer buffer, final String fieldName, final byte[] array, final Boolean fullDetail) { if (fieldName == null) { throw new UnsupportedOperationException( "Field names are mandatory when using JsonToStringStyle"); } if (!isFullDetail(fullDetail)){ throw new UnsupportedOperationException( "FullDetail must be true when using JsonToStringStyle"); } super.append(buffer, fieldName, array, fullDetail); } @Override public void append(final StringBuffer buffer, final String fieldName, final char[] array, final Boolean fullDetail) { if (fieldName == null) { throw new UnsupportedOperationException( "Field names are mandatory when using JsonToStringStyle"); } if (!isFullDetail(fullDetail)){ throw new UnsupportedOperationException( "FullDetail must be true when using JsonToStringStyle"); } super.append(buffer, fieldName, array, fullDetail); } @Override public void append(final StringBuffer buffer, final String fieldName, final double[] array, final Boolean fullDetail) { if (fieldName == null) { throw new UnsupportedOperationException( "Field names are mandatory when using JsonToStringStyle"); } if (!isFullDetail(fullDetail)){ throw new UnsupportedOperationException( "FullDetail must be true when using JsonToStringStyle"); } super.append(buffer, fieldName, array, fullDetail); } @Override public void append(final StringBuffer buffer, final String fieldName, final float[] array, final Boolean fullDetail) { if (fieldName == null) { throw new UnsupportedOperationException( "Field names are mandatory when using JsonToStringStyle"); } if (!isFullDetail(fullDetail)){ throw new UnsupportedOperationException( "FullDetail must be true when using JsonToStringStyle"); } super.append(buffer, fieldName, array, fullDetail); } @Override public void append(final StringBuffer buffer, final String fieldName, final boolean[] array, final Boolean fullDetail) { if (fieldName == null) { throw new UnsupportedOperationException( "Field names are mandatory when using JsonToStringStyle"); } if (!isFullDetail(fullDetail)){ throw new UnsupportedOperationException( "FullDetail must be true when using JsonToStringStyle"); } super.append(buffer, fieldName, array, fullDetail); } @Override public void append(final StringBuffer buffer, final String fieldName, final Object value, final Boolean fullDetail) { if (fieldName == null) { throw new UnsupportedOperationException( "Field names are mandatory when using JsonToStringStyle"); } if (!isFullDetail(fullDetail)){ throw new UnsupportedOperationException( "FullDetail must be true when using JsonToStringStyle"); } super.append(buffer, fieldName, value, fullDetail); } @Override protected void appendDetail(final StringBuffer buffer, final String fieldName, final char value) { appendValueAsString(buffer, String.valueOf(value)); } @Override protected void appendDetail(final StringBuffer buffer, final String fieldName, final Object value) { if (value == null) { appendNullText(buffer, fieldName); return; } if (value instanceof String || value instanceof Character) { appendValueAsString(buffer, value.toString()); return; } if (value instanceof Number || value instanceof Boolean) { buffer.append(value); return; } final String valueAsString = value.toString(); if (isJsonObject(valueAsString) || isJsonArray(valueAsString)) { buffer.append(value); return; } appendDetail(buffer, fieldName, valueAsString); } private boolean isJsonArray(final String valueAsString) { return valueAsString.startsWith(getArrayStart()) && valueAsString.endsWith(getArrayEnd()); } private boolean isJsonObject(final String valueAsString) { return valueAsString.startsWith(getContentStart()) && valueAsString.endsWith(getContentEnd()); } /** * Appends the given String enclosed in double-quotes to the given StringBuffer. * * @param buffer the StringBuffer to append the value to. * @param value the value to append. */ private void appendValueAsString(final StringBuffer buffer, final String value) { buffer.append('"').append(StringEscapeUtils.escapeJson(value)).append('"'); } @Override protected void appendFieldStart(final StringBuffer buffer, final String fieldName) { if (fieldName == null) { throw new UnsupportedOperationException( "Field names are mandatory when using JsonToStringStyle"); } super.appendFieldStart(buffer, FIELD_NAME_QUOTE + StringEscapeUtils.escapeJson(fieldName) + FIELD_NAME_QUOTE); } /** *

* Ensure Singleton after serialization. *

* * @return the singleton */ private Object readResolve() { return JSON_STYLE; } } }




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