Class JsonFactory (1.42.3)

Version 1.42.3

• 1.45.0 (latest)
• 1.44.2
• 1.43.2
• 1.42.3
• 1.41.8

public abstract class JsonFactory

Abstract low-level JSON factory.

Implementation is thread-safe, and sub-classes must be thread-safe. For maximum efficiency, applications should use a single globally-shared instance of the JSON factory.

Inheritance

Object > JsonFactory

Inherited Members

Object.clone()

Object.equals(Object)

Object.finalize()

Object.getClass()

Object.hashCode()

Object.notify()

Object.notifyAll()

Object.toString()

Object.wait()

Object.wait(long)

Object.wait(long,int)

Constructors

JsonFactory()

public JsonFactory()

Methods

<T>fromInputStream(InputStream inputStream, Class<T> destinationClass)

public final T <T>fromInputStream(InputStream inputStream, Class<T> destinationClass)

Parse and close an input stream as a JSON object, array, or value into a new instance of the given destination class using <xref uid="com.google.api.client.json.JsonParser.

Tries to detect the charset of the input stream automatically.

Parameters

Name	Description
inputStream	InputStream JSON value in an input stream
destinationClass	Class<T> destination class that has an accessible default constructor to use to create a new instance

Returns

Type	Description
T	new instance of the parsed destination class

Exceptions

Type	Description
IOException

<T>fromInputStream(InputStream inputStream, Charset charset, Class<T> destinationClass)

public final T <T>fromInputStream(InputStream inputStream, Charset charset, Class<T> destinationClass)

Parse and close an input stream as a JSON object, array, or value into a new instance of the given destination class using <xref uid="com.google.api.client.json.JsonParser.

Parameters

Name	Description
inputStream	InputStream JSON value in an input stream
charset	Charset Charset in which the stream is encoded
destinationClass	Class<T> destination class that has an accessible default constructor to use to create a new instance

Returns

Type	Description
T	new instance of the parsed destination class

Exceptions

Type	Description
IOException

<T>fromReader(Reader reader, Class<T> destinationClass)

public final T <T>fromReader(Reader reader, Class<T> destinationClass)

Parse and close a reader as a JSON object, array, or value into a new instance of the given destination class using <xref uid="com.google.api.client.json.JsonParser.

Parameters

Name	Description
reader	Reader JSON value in a reader
destinationClass	Class<T> destination class that has an accessible default constructor to use to create a new instance

Returns

Type	Description
T	new instance of the parsed destination class

Exceptions

Type	Description
IOException

<T>fromString(String value, Class<T> destinationClass)

public final T <T>fromString(String value, Class<T> destinationClass)

Parses a string value as a JSON object, array, or value into a new instance of the given destination class using <xref uid="com.google.api.client.json.JsonParser.

Parameters

Name	Description
value	String JSON string value
destinationClass	Class<T> destination class that has an accessible default constructor to use to create a new instance

Returns

Type	Description
T	new instance of the parsed destination class

Exceptions

Type	Description
IOException

createJsonGenerator(OutputStream out, Charset enc)

public abstract JsonGenerator createJsonGenerator(OutputStream out, Charset enc)

Returns a new instance of a low-level JSON serializer for the given output stream and encoding.

Parameters

Name	Description
out	OutputStream output stream
enc	Charset encoding

Returns

Type	Description
JsonGenerator	new instance of a low-level JSON serializer

Exceptions

Type	Description
IOException

createJsonGenerator(Writer writer)

public abstract JsonGenerator createJsonGenerator(Writer writer)

Returns a new instance of a low-level JSON serializer for the given writer.

Parameter

Name	Description
writer	Writer writer

Returns

Type	Description
JsonGenerator	new instance of a low-level JSON serializer

Exceptions

Type	Description
IOException

createJsonObjectParser()

public final JsonObjectParser createJsonObjectParser()

Creates an object parser which uses this factory to parse JSON data.

Returns

Type	Description
JsonObjectParser

createJsonParser(InputStream in)

public abstract JsonParser createJsonParser(InputStream in)

Returns a new instance of a low-level JSON parser for the given input stream. The parser tries to detect the charset of the input stream by itself.

Parameter

Name	Description
in	InputStream input stream

Returns

Type	Description
JsonParser	new instance of a low-level JSON parser

Exceptions

Type	Description
IOException

createJsonParser(InputStream in, Charset charset)

public abstract JsonParser createJsonParser(InputStream in, Charset charset)

Returns a new instance of a low-level JSON parser for the given input stream.

Parameters

Name	Description
in	InputStream input stream
charset	Charset charset in which the input stream is encoded or null to let the parser detect the charset

Returns

Type	Description
JsonParser	new instance of a low-level JSON parser

Exceptions

Type	Description
IOException

createJsonParser(Reader reader)

public abstract JsonParser createJsonParser(Reader reader)

Returns a new instance of a low-level JSON parser for the given reader.

Parameter

Name	Description
reader	Reader reader

Returns

Type	Description
JsonParser	new instance of a low-level JSON parser

Exceptions

Type	Description
IOException

createJsonParser(String value)

public abstract JsonParser createJsonParser(String value)

Returns a new instance of a low-level JSON parser for the given string value.

Parameter

Name	Description
value	String string value

Returns

Type	Description
JsonParser	new instance of a low-level JSON parser

Exceptions

Type	Description
IOException

toByteArray(Object item)

public final byte[] toByteArray(Object item)

Returns a UTF-8 encoded byte array of the serialized JSON representation for the given item using JsonGenerator#serialize(Object).

Parameter

Name	Description
item	Object data key/value pairs

Returns

Type	Description
byte[]	byte array of the serialized JSON representation

Exceptions

Type	Description
IOException

toPrettyString(Object item)

public final String toPrettyString(Object item)

Returns a pretty-printed serialized JSON string representation for the given item using JsonGenerator#serialize(Object) with JsonGenerator#enablePrettyPrint().

The specifics of how the JSON representation is made pretty is implementation dependent, and should not be relied on. However, it is assumed to be legal, and in fact differs from #toString(Object) only by adding whitespace that does not change its meaning.

Parameter

Name	Description
item	Object data key/value pairs

Returns

Type	Description
String	serialized JSON string representation

Exceptions

Type	Description
IOException

toString(Object item)

public final String toString(Object item)

Returns a serialized JSON string representation for the given item using JsonGenerator#serialize(Object).

Parameter

Name	Description
item	Object data key/value pairs

Returns

Type	Description
String	serialized JSON string representation

Exceptions

Type	Description
IOException