Package com.streambase.sb

Class TupleJSONUtil.SetTupleFromJSON

java.lang.Object

com.streambase.sb.TupleJSONUtil.SetTupleFromJSON

Enclosing class:

TupleJSONUtil

public static class TupleJSONUtil.SetTupleFromJSON
extends Object

The Builder class which handles the setting of tuples from JSON Data. This has several parameters which can be specified using the respective builder methods. These builder methods are:
withParseStyle(com.streambase.sb.ParseStyle) whether to throw an exception when fields are missing from tuple's schema (ParseStyle.STRICT) or not (ParseStyle.LOOSE)
withTimestampStyle(com.streambase.sb.Timestamp.Type) timestampStyle Whether the numeric values in a timestamp field will be converted to an Timestamp.Type.INTERVAL or a Timestamp.Type.TIMESTAMP
withTimestampFormat(java.lang.String) the string representation of the timestamp format to use when converting
withEmptyStringValue(java.lang.String) the string specifying what an empty/null json field should evaluate to
Two static instances are provided: STRICT and LOOSE, which set all defaults except for the parseStyle, which instead corresponds to the instance name.
STRICT can be used as a plain default instance with no modifications.

Field Summary

Fields

Modifier and Type	Field	Description
static final TupleJSONUtil.SetTupleFromJSON	LOOSE	Establishes a new SetTupleFromJSON with default settings, except parseStyle is Loose.
static final TupleJSONUtil.SetTupleFromJSON	STRICT	Establishes a new SetTupleFromJSON with default settings, except parseStyle is Strict.

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object o)
int	hashCode()
TupleJSONUtil.SetTupleFromJSON	process(String jsonVal, Tuple tuple)	Handles the processing of a JSON value into a tuple, replaces the deprecated setTupleFromJSON and setTuple methods in the API.
String	toString()
TupleJSONUtil.SetTupleFromJSON	withEmptyStringValue(String value)	Sets the emptyString value of a new SetTupleFromJSON and returns it.
TupleJSONUtil.SetTupleFromJSON	withParseStyle(ParseStyle style)	Sets the parsestyle of a new SetTupleFromJSON and returns it.
TupleJSONUtil.SetTupleFromJSON	withTimestampFormat(String format)	Sets the timestamp format of a new SetTupleFromJSON and returns it.
TupleJSONUtil.SetTupleFromJSON	withTimestampStyle(Timestamp.Type style)	Sets the timestampStyle of a new SetTupleFromJSON and returns it.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

STRICT

public static final TupleJSONUtil.SetTupleFromJSON STRICT

Establishes a new SetTupleFromJSON with default settings, except parseStyle is Strict.
- ParseStyle -> ParseStyle.STRICT,
- TimeStyle -> Timestamp.Type.TIMESTAMP,
- TimestampFormat -> "",
- EmptyStringJsonValue -> ""

LOOSE

public static final TupleJSONUtil.SetTupleFromJSON LOOSE

Establishes a new SetTupleFromJSON with default settings, except parseStyle is Loose.
- ParseStyle -> ParseStyle.LOOSE,
- TimeStyle -> Timestamp.Type.TIMESTAMP,
- TimestampFormat -> "",
- EmptyStringJsonValue -> ""

Method Details

withParseStyle

public TupleJSONUtil.SetTupleFromJSON withParseStyle(ParseStyle style)

Sets the parsestyle of a new SetTupleFromJSON and returns it.

Parameters:

style - the style to use.

Returns:

a new SetTupleFromJSON with parseStyle set.

withTimestampStyle

public TupleJSONUtil.SetTupleFromJSON withTimestampStyle(Timestamp.Type style)

Sets the timestampStyle of a new SetTupleFromJSON and returns it.

Parameters:

style - the style to use.

Returns:

a new SetTupleFromJSON with timestampStyle set.

withTimestampFormat

public TupleJSONUtil.SetTupleFromJSON withTimestampFormat(String format)

Sets the timestamp format of a new SetTupleFromJSON and returns it.

Parameters:

format - the format to use

Returns:

a new SetTupleFromJSON with timestampFormat set.

withEmptyStringValue

public TupleJSONUtil.SetTupleFromJSON withEmptyStringValue(String value)

Sets the emptyString value of a new SetTupleFromJSON and returns it.

Parameters:

value - the string to use

Returns:

a new SetTupleFromJSON with emptyStringJsonValue set.

process

public TupleJSONUtil.SetTupleFromJSON process(String jsonVal,
 Tuple tuple)
                                       throws StreamBaseException

Handles the processing of a JSON value into a tuple, replaces the deprecated setTupleFromJSON and setTuple methods in the API.

Parameters:

jsonVal - the JSON string; must have at least the fields of the tuple's schema

tuple - the tuple to set

Returns:

this

Throws:

StreamBaseException - conversion to tuple error.

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object