Package org.littletonrobotics.junction

Class LogTable

java.lang.Object

org.littletonrobotics.junction.LogTable

public class LogTable
extends Object

A table of logged data in allowable types. Can reference another higher level table.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	LogTable.LoggableType	Represents all possible data types that can be logged.
static class	LogTable.LogValue	Represents a value stored in a LogTable, including type and value.

Constructor Summary

Constructors

Constructor	Description
LogTable(long timestamp)	Creates a new LogTable, to serve as the root table.

Method Summary

Modifier and Type	Method	Description
static LogTable	clone(LogTable source)	Creates a new LogTable, copying data from the given source.
LogTable.LogValue	get(String key)	Reads a generic value from the table.
boolean	get(String key, boolean defaultValue)	Reads a Boolean value from the table.
boolean[]	get(String key, boolean[] defaultValue)	Reads a BooleanArray value from the table.
boolean[][]	get(String key, boolean[][] defaultValue)	Reads a 2D BooleanArray value from the table.
byte[]	get(String key, byte[] defaultValue)	Reads a Raw value from the table.
byte[][]	get(String key, byte[][] defaultValue)	Reads a 2D Raw value from the table.
double	get(String key, double defaultValue)	Reads a Double value from the table.
double[]	get(String key, double[] defaultValue)	Reads a DoubleArray value from the table.
double[][]	get(String key, double[][] defaultValue)	Reads a 2D DoubleArray value from the table.
float	get(String key, float defaultValue)	Reads a Float value from the table.
float[]	get(String key, float[] defaultValue)	Reads a FloatArray value from the table.
float[][]	get(String key, float[][] defaultValue)	Reads a 2D FloatArray value from the table.
int	get(String key, int defaultValue)	Reads an Integer value from the table.
int[]	get(String key, int[] defaultValue)	Reads an IntegerArray value from the table.
int[][]	get(String key, int[][] defaultValue)	Reads a 2D IntegerArray value from the table.
long	get(String key, long defaultValue)	Reads an Integer value from the table.
long[]	get(String key, long[] defaultValue)	Reads an IntegerArray value from the table.
long[][]	get(String key, long[][] defaultValue)	Reads a 2D IntegerArray value from the table.
<E extends Enum<E>> E	get(String key, E defaultValue)	Reads an enum value from the table.
<E extends Enum<E>> E[]	get(String key, E[] defaultValue)	Reads an enum array value from the table.
<E extends Enum<E>> E[][]	get(String key, E[][] defaultValue)	Reads a 2D enum array value from the table.
<T, MessageType extends us.hebi.quickbuf.ProtoMessage<?>> T	get(String key, Protobuf<T,MessageType> proto, T defaultValue)	Reads a protobuf value from the table.
<T> T	get(String key, Struct<T> struct, T defaultValue)	Reads a struct value from the table.
<T> T[]	get(String key, Struct<T> struct, T... defaultValue)	Reads a struct array value from the table.
<T> T[][]	get(String key, Struct<T> struct, T[][] defaultValue)	Reads a 2D struct array value from the table.
Color	get(String key, Color defaultValue)	Reads a Color value from the table.
String	get(String key, String defaultValue)	Reads a String value from the table.
String[]	get(String key, String[] defaultValue)	Reads a StringArray value from the table.
String[][]	get(String key, String[][] defaultValue)	Reads a 2D StringArray value from the table.
<U extends Unit, M extends Measure<U>> M	get(String key, M defaultValue)	Reads a Measure value from the table.
<R extends Record> R	get(String key, R defaultValue)	Reads a serialized record value from the table.
<R extends Record> R[]	get(String key, R... defaultValue)	Reads a serialized record array value from the table.
<R extends Record> R[][]	get(String key, R[][] defaultValue)	Reads a serialized 2D record array value from the table.
<T extends LoggableInputs> T	get(String key, T defaultValue)	Reads a LoggableInput subtable from the table.
<T extends StructSerializable> T[]	get(String key, T... defaultValue)	Reads a serialized (struct) array value from the table.
<T extends StructSerializable> T[][]	get(String key, T[][] defaultValue)	Reads a serialized 2D (struct) array value from the table.
Map<String,LogTable.LogValue>	getAll(boolean subtableOnly)	Returns a set of all values from the table.
LogTable	getSubtable(String tableName)	Creates a new LogTable for referencing a single subtable.
long	getTimestamp()	Returns the timestamp of the table.
void	put(String key, boolean value)	Writes a new Boolean value to the table.
void	put(String key, boolean[] value)	Writes a new BooleanArray value to the table.
void	put(String key, boolean[][] value)	Writes a new 2D BooleanArray value to the table.
void	put(String key, byte[] value)	Writes a new Raw value to the table.
void	put(String key, byte[][] value)	Writes a new 2D Raw value to the table.
void	put(String key, double value)	Writes a new Double value to the table.
void	put(String key, double[] value)	Writes a new DoubleArray value to the table.
void	put(String key, double[][] value)	Writes a new 2D DoubleArray value to the table.
void	put(String key, double value, String unit)	Writes a new Double value to the table with units.
void	put(String key, float value)	Writes a new Float value to the table.
void	put(String key, float[] value)	Writes a new FloatArray value to the table.
void	put(String key, float[][] value)	Writes a new 2D FloatArray value to the table.
void	put(String key, float value, String unit)	Writes a new Float value to the table with units.
void	put(String key, int value)	Writes a new Integer value to the table.
void	put(String key, int[] value)	Writes a new IntegerArray value to the table.
void	put(String key, int[][] value)	Writes a new 2D IntegerArray value to the table.
void	put(String key, long value)	Writes a new Integer value to the table.
void	put(String key, long[] value)	Writes a new IntegerArray value to the table.
void	put(String key, long[][] value)	Writes a new 2D IntegerArray value to the table.
<E extends Enum<E>> void	put(String key, E value)	Writes a new enum value to the table.
<E extends Enum<E>> void	put(String key, E[] value)	Writes a new enum array value to the table.
<E extends Enum<E>> void	put(String key, E[][] value)	Writes a new 2D enum array value to the table.
<U extends Unit> void	put(String key, Measure<U> value)	Writes a new Measure value to the table.
<T, MessageType extends us.hebi.quickbuf.ProtoMessage<?>> void	put(String key, Protobuf<T,MessageType> proto, T value)	Writes a new protobuf value to the table.
<T> void	put(String key, Struct<T> struct, T value)	Writes a new struct value to the table.
<T> void	put(String key, Struct<T> struct, T... value)	Writes a new struct array value to the table.
<T> void	put(String key, Struct<T> struct, T[][] value)	Writes a new 2D struct array value to the table.
void	put(String key, Color value)	Writes a new Color value to the table.
void	put(String key, String value)	Writes a new String value to the table.
void	put(String key, String[] value)	Writes a new StringArray value to the table.
void	put(String key, String[][] value)	Writes a new 2D StringArray value to the table.
void	put(String key, LogTable.LogValue value)	Writes a new generic value to the table.
<R extends Record> void	put(String key, R value)	Writes a new auto serialized record value to the table.
<R extends Record> void	put(String key, R... value)	Writes a new auto serialized record array value to the table.
<R extends Record> void	put(String key, R[][] value)	Writes a new auto serialized 2D record array value to the table.
<T extends LoggableInputs> void	put(String key, T value)	Writes a new LoggableInput subtable to the table.
<T extends StructSerializable> void	put(String key, T... value)	Writes a new auto serialized array value to the table.
<T extends StructSerializable> void	put(String key, T[][] value)	Writes a new auto serialized 2D array value to the table.
void	setTimestamp(long timestamp)	Updates the timestamp of the table.
String	toString()	Returns a string representation of the table.

Methods inherited from class java.lang.Object

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

Constructor Details

LogTable

public LogTable(long timestamp)

Creates a new LogTable, to serve as the root table.

Parameters:

timestamp - The timestamp for the table.

Method Details

clone

public static LogTable clone(LogTable source)

Creates a new LogTable, copying data from the given source. The original table can be safely modified without affecting the copy.

Parameters:

source - The source table.

Returns:

The new table.

setTimestamp

public void setTimestamp(long timestamp)

Updates the timestamp of the table.

Parameters:

timestamp - The new timestamp.

getTimestamp

public long getTimestamp()

Returns the timestamp of the table.

Returns:

The timestamp.

getSubtable

public LogTable getSubtable(String tableName)

Creates a new LogTable for referencing a single subtable. Modifications to the subtable will be reflected in the original object.

Parameters:

tableName - The name of the subtable. Do not include a trailing slash.

Returns:

The subtable object.

getAll

public Map<String,LogTable.LogValue> getAll(boolean subtableOnly)

Returns a set of all values from the table. If reading a single subtable, the data will be a copy. Otherwise, it will be a reference.

Parameters:

subtableOnly - If true, include only values in the subtable (no prefix). If false, include all values.

Returns:

Map of the requested data.

put

public void put(String key,
 LogTable.LogValue value)

Writes a new generic value to the table. Skipped if the key already exists as a different type.

Parameters:

key - The field name.

value - The field value.

put

public void put(String key,
 byte[] value)

Writes a new Raw value to the table. Skipped if the key already exists as a different type.

Parameters:

key - The field name.

value - The field value.

put

public void put(String key,
 byte[][] value)

Writes a new 2D Raw value to the table. Skipped if the key already exists as a different type.

Parameters:

key - The field name.

value - The field value.

put

public void put(String key,
 boolean value)

Writes a new Boolean value to the table. Skipped if the key already exists as a different type.

Parameters:

key - The field name.

value - The field value.

put

public void put(String key,
 boolean[] value)

Writes a new BooleanArray value to the table. Skipped if the key already exists as a different type.

Parameters:

key - The field name.

value - The field value.

put

public void put(String key,
 boolean[][] value)

Writes a new 2D BooleanArray value to the table. Skipped if the key already exists as a different type.

Parameters:

key - The field name.

value - The field value.

put

public void put(String key,
 int value)

Writes a new Integer value to the table. Skipped if the key already exists as a different type.

Parameters:

key - The field name.

value - The field value.

put

public void put(String key,
 int[] value)

Writes a new IntegerArray value to the table. Skipped if the key already exists as a different type.

Parameters:

key - The field name.

value - The field value.

put

public void put(String key,
 int[][] value)

Writes a new 2D IntegerArray value to the table. Skipped if the key already exists as a different type.

Parameters:

key - The field name.

value - The field value.

put

public void put(String key,
 long value)

Writes a new Integer value to the table. Skipped if the key already exists as a different type.

Parameters:

key - The field name.

value - The field value.

put

public void put(String key,
 long[] value)

Writes a new IntegerArray value to the table. Skipped if the key already exists as a different type.

Parameters:

key - The field name.

value - The field value.

put

public void put(String key,
 long[][] value)

Writes a new 2D IntegerArray value to the table. Skipped if the key already exists as a different type.

Parameters:

key - The field name.

value - The field value.

put

public void put(String key,
 float value)

Writes a new Float value to the table. Skipped if the key already exists as a different type.

Parameters:

key - The field name.

value - The field value.

put

public void put(String key,
 float value,
 String unit)

Writes a new Float value to the table with units. Skipped if the key already exists as a different type.

Parameters:

key - The field name.

value - The field value.

unit - The unit to save as metadata.

put

public void put(String key,
 float[] value)

Writes a new FloatArray value to the table. Skipped if the key already exists as a different type.

Parameters:

key - The field name.

value - The field value.

put

public void put(String key,
 float[][] value)

Writes a new 2D FloatArray value to the table. Skipped if the key already exists as a different type.

Parameters:

key - The field name.

value - The field value.

put

public void put(String key,
 double value)

Writes a new Double value to the table. Skipped if the key already exists as a different type.

Parameters:

key - The field name.

value - The field value.

put

public void put(String key,
 double value,
 String unit)

Writes a new Double value to the table with units. Skipped if the key already exists as a different type.

Parameters:

key - The field name.

value - The field value.

unit - The unit to save as metadata.

put

public void put(String key,
 double[] value)

Writes a new DoubleArray value to the table. Skipped if the key already exists as a different type.

Parameters:

key - The field name.

value - The field value.

put

public void put(String key,
 double[][] value)

Writes a new 2D DoubleArray value to the table. Skipped if the key already exists as a different type.

Parameters:

key - The field name.

value - The field value.

put

public void put(String key,
 String value)

Writes a new String value to the table. Skipped if the key already exists as a different type.

Parameters:

key - The field name.

value - The field value.

put

public void put(String key,
 String[] value)

Writes a new StringArray value to the table. Skipped if the key already exists as a different type.

Parameters:

key - The field name.

value - The field value.

put

public void put(String key,
 String[][] value)

Writes a new 2D StringArray value to the table. Skipped if the key already exists as a different type.

Parameters:

key - The field name.

value - The field value.

put

public <E extends Enum<E>> void put(String key,
 E value)

Writes a new enum value to the table. Skipped if the key already exists as a different type.

Type Parameters:

E - The enum type.

Parameters:

key - The field name.

value - The field value.

put

public <E extends Enum<E>> void put(String key,
 E[] value)

Writes a new enum array value to the table. Skipped if the key already exists as a different type.

Type Parameters:

E - The enum type.

Parameters:

key - The field name.

value - The field value.

put

public <E extends Enum<E>> void put(String key,
 E[][] value)

Writes a new 2D enum array value to the table. Skipped if the key already exists as a different type.

Type Parameters:

E - The enum type.

Parameters:

key - The field name.

value - The field value.

put

public <U extends Unit> void put(String key,
 Measure<U> value)

Writes a new Measure value to the table. Skipped if the key already exists as a different type.

This overload always records the value in its base unit. Use the double overload with a unit string to record values with alternative units.

Type Parameters:

U - The unit type.

Parameters:

key - The field name.

value - The field value.

put

public void put(String key,
 Color value)

Writes a new Color value to the table. Skipped if the key already exists as a different type.

Parameters:

key - The field name.

value - The field value.

put

public <T extends LoggableInputs> void put(String key,
 T value)

Writes a new LoggableInput subtable to the table.

Type Parameters:

T - The input type.

Parameters:

key - The field name.

value - The field value.

put

public <T> void put(String key,
 Struct<T> struct,
 T value)

Writes a new struct value to the table. Skipped if the key already exists as a different type.

Type Parameters:

T - The struct type.

Parameters:

key - The field name.

struct - The struct serialization object.

value - The field value.

put

public <T> void put(String key,
 Struct<T> struct,
 T... value)

Writes a new struct array value to the table. Skipped if the key already exists as a different type.

Type Parameters:

T - The struct type.

Parameters:

key - The field name.

struct - The struct serialization object.

value - The field value.

put

public <T> void put(String key,
 Struct<T> struct,
 T[][] value)

Writes a new 2D struct array value to the table. Skipped if the key already exists as a different type.

Type Parameters:

T - The struct type.

Parameters:

key - The field name.

struct - The struct serialization object.

value - The field value.

put

public <T,
MessageType extends us.hebi.quickbuf.ProtoMessage<?>>
void put(String key,
 Protobuf<T,MessageType> proto,
 T value)

Writes a new protobuf value to the table. Skipped if the key already exists as a different type.

Type Parameters:

T - The value type.

MessageType - The protobuf message type.

Parameters:

key - The field name.

proto - The protobuf serialization object.

value - The field value.

put

public <T extends WPISerializable> void put(String key,
 T value)

Writes a new auto serialized value to the table. Skipped if the key already exists as a different type.

Type Parameters:

T - The object type.

Parameters:

key - The field name.

value - The field value.

put

public <T extends StructSerializable> void put(String key,
 T... value)

Writes a new auto serialized array value to the table. Skipped if the key already exists as a different type.

Type Parameters:

T - The object type.

Parameters:

key - The field name.

value - The field value.

put

public <T extends StructSerializable> void put(String key,
 T[][] value)

Writes a new auto serialized 2D array value to the table. Skipped if the key already exists as a different type.

Type Parameters:

T - The object type.

Parameters:

key - The field name.

value - The field value.

put

public <R extends Record> void put(String key,
 R value)

Writes a new auto serialized record value to the table. Skipped if the key already exists as a different type.

Type Parameters:

R - The record type.

Parameters:

key - The field name.

value - The field value.

put

public <R extends Record> void put(String key,
 R... value)

Writes a new auto serialized record array value to the table. Skipped if the key already exists as a different type.

Type Parameters:

R - The record type.

Parameters:

key - The field name.

value - The field value.

put

public <R extends Record> void put(String key,
 R[][] value)

Writes a new auto serialized 2D record array value to the table. Skipped if the key already exists as a different type.

Type Parameters:

R - The record type.

Parameters:

key - The field name.

value - The field value.

get

public LogTable.LogValue get(String key)

Reads a generic value from the table.

Parameters:

key - The field name.

Returns:

The field value.

get

public byte[] get(String key,
 byte[] defaultValue)

Reads a Raw value from the table.

Parameters:

key - The field name.

defaultValue - The default field value.

Returns:

The field value.

get

public byte[][] get(String key,
 byte[][] defaultValue)

Reads a 2D Raw value from the table.

Parameters:

key - The field name.

defaultValue - The default field value.

Returns:

The field value.

get

public boolean get(String key,
 boolean defaultValue)

Reads a Boolean value from the table.

Parameters:

key - The field name.

defaultValue - The default field value.

Returns:

The field value.

get

public boolean[] get(String key,
 boolean[] defaultValue)

Reads a BooleanArray value from the table.

Parameters:

key - The field name.

defaultValue - The default field value.

Returns:

The field value.

get

public boolean[][] get(String key,
 boolean[][] defaultValue)

Reads a 2D BooleanArray value from the table.

Parameters:

key - The field name.

defaultValue - The default field value.

Returns:

The field value.

get

public int get(String key,
 int defaultValue)

Reads an Integer value from the table.

Parameters:

key - The field name.

defaultValue - The default field value.

Returns:

The field value.

get

public int[] get(String key,
 int[] defaultValue)

Reads an IntegerArray value from the table.

Parameters:

key - The field name.

defaultValue - The default field value.

Returns:

The field value.

get

public int[][] get(String key,
 int[][] defaultValue)

Reads a 2D IntegerArray value from the table.

Parameters:

key - The field name.

defaultValue - The default field value.

Returns:

The field value.

get

public long get(String key,
 long defaultValue)

Reads an Integer value from the table.

Parameters:

key - The field name.

defaultValue - The default field value.

Returns:

The field value.

get

public long[] get(String key,
 long[] defaultValue)

Reads an IntegerArray value from the table.

Parameters:

key - The field name.

defaultValue - The default field value.

Returns:

The field value.

get

public long[][] get(String key,
 long[][] defaultValue)

Reads a 2D IntegerArray value from the table.

Parameters:

key - The field name.

defaultValue - The default field value.

Returns:

The field value.

get

public float get(String key,
 float defaultValue)

Reads a Float value from the table.

Parameters:

key - The field name.

defaultValue - The default field value.

Returns:

The field value.

get

public float[] get(String key,
 float[] defaultValue)

Reads a FloatArray value from the table.

Parameters:

key - The field name.

defaultValue - The default field value.

Returns:

The field value.

get

public float[][] get(String key,
 float[][] defaultValue)

Reads a 2D FloatArray value from the table.

Parameters:

key - The field name.

defaultValue - The default field value.

Returns:

The field value.

get

public double get(String key,
 double defaultValue)

Reads a Double value from the table.

Parameters:

key - The field name.

defaultValue - The default field value.

Returns:

The field value.

get

public double[] get(String key,
 double[] defaultValue)

Reads a DoubleArray value from the table.

Parameters:

key - The field name.

defaultValue - The default field value.

Returns:

The field value.

get

public double[][] get(String key,
 double[][] defaultValue)

Reads a 2D DoubleArray value from the table.

Parameters:

key - The field name.

defaultValue - The default field value.

Returns:

The field value.

get

public String get(String key,
 String defaultValue)

Reads a String value from the table.

Parameters:

key - The field name.

defaultValue - The default field value.

Returns:

The field value.

get

public String[] get(String key,
 String[] defaultValue)

Reads a StringArray value from the table.

Parameters:

key - The field name.

defaultValue - The default field value.

Returns:

The field value.

get

public String[][] get(String key,
 String[][] defaultValue)

Reads a 2D StringArray value from the table.

Parameters:

key - The field name.

defaultValue - The default field value.

Returns:

The field value.

get

public <E extends Enum<E>> E get(String key,
 E defaultValue)

Reads an enum value from the table.

Type Parameters:

E - The enum type.

Parameters:

key - The field name.

defaultValue - The default field value.

Returns:

The field value.

get

public <E extends Enum<E>> E[] get(String key,
 E[] defaultValue)

Reads an enum array value from the table.

Type Parameters:

E - The enum type.

Parameters:

key - The field name.

defaultValue - The default field value.

Returns:

The field value.

get

public <E extends Enum<E>> E[][] get(String key,
 E[][] defaultValue)

Reads a 2D enum array value from the table.

Type Parameters:

E - The enum type.

Parameters:

key - The field name.

defaultValue - The default field value.

Returns:

The field value.

get

public <U extends Unit,
M extends Measure<U>> M get(String key,
 M defaultValue)

Reads a Measure value from the table.

Type Parameters:

U - The unit type.

M - The measure type.

Parameters:

key - The field name.

defaultValue - The default field value.

Returns:

The field value.

get

public <U extends Unit,
Base extends Measure<U>,
M extends MutableMeasure<U,
Base,
M>>
M get(String key,
 M value)

Reads a MutableMeasure value from the table.

Unlike other "get" methods, this method mutates the provided value instead of returning a new instance. The object returned from this method is the same instance as the provided value.

Type Parameters:

U - The unit type.

Base - The base unit type

M - The measure type.

Parameters:

key - The field name.

value - The field value, to be mutated.

Returns:

The field value.

get

public Color get(String key,
 Color defaultValue)

Reads a Color value from the table.

Parameters:

key - The field name.

defaultValue - The default field value.

Returns:

The field value.

get

public <T extends LoggableInputs> T get(String key,
 T defaultValue)

Reads a LoggableInput subtable from the table.

Type Parameters:

T - The input type.

Parameters:

key - The field name.

defaultValue - The default field value.

Returns:

The field value.

get

public <T> T get(String key,
 Struct<T> struct,
 T defaultValue)

Reads a struct value from the table.

Type Parameters:

T - The struct type.

Parameters:

key - The field name.

struct - The struct serialization object.

defaultValue - The default field value.

Returns:

The field value.

get

public <T> T[] get(String key,
 Struct<T> struct,
 T... defaultValue)

Reads a struct array value from the table.

Type Parameters:

T - The struct type.

Parameters:

key - The field name.

struct - The struct serialization object.

defaultValue - The default field value.

Returns:

The field value.

get

public <T> T[][] get(String key,
 Struct<T> struct,
 T[][] defaultValue)

Reads a 2D struct array value from the table.

Type Parameters:

T - The struct type.

Parameters:

key - The field name.

struct - The struct serialization object.

defaultValue - The default field value.

Returns:

The field value.

get

public <T,
MessageType extends us.hebi.quickbuf.ProtoMessage<?>>
T get(String key,
 Protobuf<T,MessageType> proto,
 T defaultValue)

Reads a protobuf value from the table.

Type Parameters:

T - The value type.

MessageType - The protobuf message type.

Parameters:

key - The field name.

proto - The protobuf serialization object.

defaultValue - The default field value.

Returns:

The field value.

get

public <T extends WPISerializable> T get(String key,
 T defaultValue)

Reads a serialized (struct/protobuf) value from the table.

Type Parameters:

T - The object type.

Parameters:

key - The field name.

defaultValue - The default field value.

Returns:

The field value.

get

public <T extends StructSerializable> T[] get(String key,
 T... defaultValue)

Reads a serialized (struct) array value from the table.

Type Parameters:

T - The object type.

Parameters:

key - The field name.

defaultValue - The default field value.

Returns:

The field value.

get

public <T extends StructSerializable> T[][] get(String key,
 T[][] defaultValue)

Reads a serialized 2D (struct) array value from the table.

Type Parameters:

T - The object type.

Parameters:

key - The field name.

defaultValue - The default field value.

Returns:

The field value.

get

public <R extends Record> R get(String key,
 R defaultValue)

Reads a serialized record value from the table.

Type Parameters:

R - The record type.

Parameters:

key - The field name.

defaultValue - The default field value.

Returns:

The field value.

get

public <R extends Record> R[] get(String key,
 R... defaultValue)

Reads a serialized record array value from the table.

Type Parameters:

R - The record type.

Parameters:

key - The field name.

defaultValue - The default field value.

Returns:

The field value.

get

public <R extends Record> R[][] get(String key,
 R[][] defaultValue)

Reads a serialized 2D record array value from the table.

Type Parameters:

R - The record type.

Parameters:

key - The field name.

defaultValue - The default field value.

Returns:

The field value.

toString

public String toString()

Returns a string representation of the table.

Overrides:

toString in class Object