Package org.apache.logging.log4j.layout.template.json.util

Class JsonWriter

java.lang.Object

org.apache.logging.log4j.layout.template.json.util.JsonWriter

All Implemented Interfaces:

AutoCloseable, Cloneable

public final class JsonWriter
extends Object
implements AutoCloseable, Cloneable

A simple JSON writer with support for common Java data types.

The following types have specific handlers:

• null input
• Map, IndexedReadOnlyStringMap, StringMap
• Collection and List
• Number (BigDecimal, BigInteger, Float, Double, Byte, Short, Integer, and Long)
• Boolean
• StringBuilderFormattable
• arrays of primitive types char/boolean/byte/short/int/long/float/double and Object
• CharSequence and char[] with necessary escaping

JSON standard quoting routines are borrowed from Jackson.

Note that this class provides no protection against recursive collections, e.g., an array where one or more elements reference to the array itself.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final class	JsonWriter.Builder

Method Summary

Modifier and Type	Method	Description
JsonWriter	clone()
void	close()
int	getMaxStringLength()
StringBuilder	getStringBuilder()
String	getTruncatedStringSuffix()
static JsonWriter.Builder	newBuilder()
String	use(Runnable runnable)
void	writeArray(boolean[] items)
void	writeArray(byte[] items)
void	writeArray(char[] items)
void	writeArray(double[] items)
void	writeArray(float[] items)
void	writeArray(int[] items)
void	writeArray(long[] items)
void	writeArray(short[] items)
void	writeArray(Object[] items)
void	writeArray(Collection<Object> items)
void	writeArray(List<Object> items)
void	writeArrayEnd()
void	writeArrayStart()
void	writeBoolean(boolean value)
void	writeNull()
void	writeNumber(double number)
void	writeNumber(float number)
void	writeNumber(int number)
void	writeNumber(long number)
void	writeNumber(long integralPart, long fractionalPart)
void	writeNumber(short number)
void	writeNumber(BigDecimal number)
void	writeNumber(BigInteger number)
void	writeObject(Map<String,Object> map)
void	writeObject(IndexedReadOnlyStringMap map)
void	writeObject(StringMap map)
void	writeObjectEnd()
void	writeObjectKey(CharSequence key)
void	writeObjectStart()
void	writeRawString(char[] buffer)
void	writeRawString(char[] buffer, int offset, int length)
void	writeRawString(CharSequence seq)
void	writeRawString(CharSequence seq, int offset, int length)
void	writeSeparator()
void	writeString(char[] buffer)
void	writeString(char[] buffer, int offset, int length)
void	writeString(CharSequence seq)
void	writeString(CharSequence seq, int offset, int length)
<S> void	writeString(BiConsumer<StringBuilder,S> emitter, S state)
void	writeString(StringBuilderFormattable formattable)
void	writeValue(Object value)

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

use

public String use(Runnable runnable)

getStringBuilder

public StringBuilder getStringBuilder()

getMaxStringLength

public int getMaxStringLength()

getTruncatedStringSuffix

public String getTruncatedStringSuffix()

writeValue

public void writeValue(Object value)

writeObject

public void writeObject(StringMap map)

writeObject

public void writeObject(IndexedReadOnlyStringMap map)

writeObject

public void writeObject(Map<String,Object> map)

writeObjectStart

public void writeObjectStart()

writeObjectEnd

public void writeObjectEnd()

writeObjectKey

public void writeObjectKey(CharSequence key)

writeArray

public void writeArray(List<Object> items)

writeArray

public void writeArray(Collection<Object> items)

writeArray

public void writeArray(char[] items)

writeArray

public void writeArray(boolean[] items)

writeArray

public void writeArray(byte[] items)

writeArray

public void writeArray(short[] items)

writeArray

public void writeArray(int[] items)

writeArray

public void writeArray(long[] items)

writeArray

public void writeArray(float[] items)

writeArray

public void writeArray(double[] items)

writeArray

public void writeArray(Object[] items)

writeArrayStart

public void writeArrayStart()

writeArrayEnd

public void writeArrayEnd()

writeSeparator

public void writeSeparator()

writeString

public <S> void writeString(BiConsumer<StringBuilder,S> emitter,
 S state)

writeString

public void writeString(StringBuilderFormattable formattable)

writeString

public void writeString(CharSequence seq)

writeString

public void writeString(CharSequence seq,
 int offset,
 int length)

writeString

public void writeString(char[] buffer)

writeString

public void writeString(char[] buffer,
 int offset,
 int length)

writeNumber

public void writeNumber(BigDecimal number)

writeNumber

public void writeNumber(BigInteger number)

writeNumber

public void writeNumber(float number)

writeNumber

public void writeNumber(double number)

writeNumber

public void writeNumber(short number)

writeNumber

public void writeNumber(int number)

writeNumber

public void writeNumber(long number)

writeNumber

public void writeNumber(long integralPart,
 long fractionalPart)

writeBoolean

public void writeBoolean(boolean value)

writeNull

public void writeNull()

writeRawString

public void writeRawString(CharSequence seq)

writeRawString

public void writeRawString(CharSequence seq,
 int offset,
 int length)

writeRawString

public void writeRawString(char[] buffer)

writeRawString

public void writeRawString(char[] buffer,
 int offset,
 int length)

close

public void close()

Specified by:

close in interface AutoCloseable

clone

public JsonWriter clone()

Overrides:

clone in class Object

newBuilder

public static JsonWriter.Builder newBuilder()