org.sonar.api.utils.text

Class JsonWriter

java.lang.Object

org.sonar.api.utils.text.JsonWriter

public class JsonWriter
extends Object

Writes JSON as a stream. This class allows plugins to not directly depend on the underlying JSON library.

How to use

   StringWriter json = new StringWriter();
   JsonWriter writer = JsonWriter.of(json);
   writer
     .beginObject()
     .prop("aBoolean", true)
     .prop("aInt", 123)
     .prop("aString", "foo")
     .beginObject().name("aList")
       .beginArray()
         .beginObject().prop("key", "ABC").endObject()
         .beginObject().prop("key", "DEF").endObject()
       .endArray()
     .endObject()
     .close();
 

By default, null objects are not serialized. To enable null serialization, use setSerializeNulls(boolean).

By default, emptry strings are serialized. To disable empty string serialization, use setSerializeEmptys(boolean).

Since:

4.2

Method Summary

Modifier and Type	Method and Description
JsonWriter	beginArray() Begins encoding a new array.
JsonWriter	beginObject() Begins encoding a new object.
void	close()
JsonWriter	endArray() Ends encoding the current array.
JsonWriter	endObject() Ends encoding the current object.
JsonWriter	name(String name) Encodes the property name.
static JsonWriter	of(Writer writer)
JsonWriter	prop(String name, boolean value)
JsonWriter	prop(String name, double value)
JsonWriter	prop(String name, long value)
JsonWriter	prop(String name, Number value) Encodes the property name and value.
JsonWriter	prop(String name, String value)
JsonWriter	propDate(String name, Date value) Encodes the property name and date value (ISO format).
JsonWriter	propDateTime(String name, Date value) Encodes the property name and datetime value (ISO format).
JsonWriter	setSerializeEmptys(boolean serializeEmptyStrings) Enable/disable serialization of properties which value is an empty String.
JsonWriter	setSerializeNulls(boolean b)
JsonWriter	value(boolean value) Encodes value.
JsonWriter	value(double value)
JsonWriter	value(long value)
JsonWriter	value(Number value)
JsonWriter	value(String value)
JsonWriter	valueDate(Date value)
JsonWriter	valueDateTime(Date value)
JsonWriter	valueObject(Object value) Encodes an object that can be a : primitive types: String, Number, Boolean java.util.Date: encoded as datetime (see valueDateTime(java.util.Date) Map<Object, Object>.
JsonWriter	values(Iterable<String> values) Write a list of values in an array, for example:

Methods inherited from class java.lang.Object

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

Method Detail

of

public static JsonWriter of(Writer writer)

setSerializeNulls

public JsonWriter setSerializeNulls(boolean b)

setSerializeEmptys

public JsonWriter setSerializeEmptys(boolean serializeEmptyStrings)

Enable/disable serialization of properties which value is an empty String.

beginArray

public JsonWriter beginArray()

Begins encoding a new array. Each call to this method must be paired with a call to endArray(). Output is [.

Throws:

WriterException - on any failure

endArray

public JsonWriter endArray()

Ends encoding the current array. Output is ].

Throws:

WriterException - on any failure

beginObject

public JsonWriter beginObject()

Begins encoding a new object. Each call to this method must be paired with a call to endObject(). Output is {.

Throws:

WriterException - on any failure

endObject

public JsonWriter endObject()

Ends encoding the current object. Output is }.

Throws:

WriterException - on any failure

name

public JsonWriter name(String name)

Encodes the property name. Output is "theName":.

Throws:

WriterException - on any failure

value

public JsonWriter value(boolean value)

Encodes value. Output is true or false.

Throws:

WriterException - on any failure

value

public JsonWriter value(double value)

Throws:

WriterException - on any failure

value

public JsonWriter value(@Nullable
                        String value)

Throws:

WriterException - on any failure

valueObject

public JsonWriter valueObject(@Nullable
                              Object value)

Encodes an object that can be a :

• primitive types: String, Number, Boolean
• java.util.Date: encoded as datetime (see valueDateTime(java.util.Date)
• Map<Object, Object>. Method toString is called for the key.
• Iterable

Throws:

WriterException - on any failure

values

public JsonWriter values(Iterable<String> values)

Write a list of values in an array, for example:

   writer.beginArray().values(myValues).endArray();
 

Throws:

WriterException - on any failure

valueDate

public JsonWriter valueDate(@Nullable
                            Date value)

Throws:

WriterException - on any failure

valueDateTime

public JsonWriter valueDateTime(@Nullable
                                Date value)

value

public JsonWriter value(long value)

Throws:

WriterException - on any failure

value

public JsonWriter value(@Nullable
                        Number value)

Throws:

WriterException - on any failure

prop

public JsonWriter prop(String name,
                       @Nullable
                       Number value)

Encodes the property name and value. Output is for example "theName":123.

Throws:

WriterException - on any failure

propDate

public JsonWriter propDate(String name,
                           @Nullable
                           Date value)

Encodes the property name and date value (ISO format). Output is for example "theDate":"2013-01-24".

Throws:

WriterException - on any failure

propDateTime

public JsonWriter propDateTime(String name,
                               @Nullable
                               Date value)

Encodes the property name and datetime value (ISO format). Output is for example "theDate":"2013-01-24T13:12:45+01".

Throws:

WriterException - on any failure

prop

public JsonWriter prop(String name,
                       @Nullable
                       String value)

Throws:

WriterException - on any failure

prop

public JsonWriter prop(String name,
                       boolean value)

Throws:

WriterException - on any failure

prop

public JsonWriter prop(String name,
                       long value)

Throws:

WriterException - on any failure

prop

public JsonWriter prop(String name,
                       double value)

Throws:

WriterException - on any failure

close

public void close()

Throws:

WriterException - on any failure