com.owlike.genson.stream

Class JsonReader

java.lang.Object

com.owlike.genson.stream.JsonReader

All Implemented Interfaces:

ObjectReader, Closeable, AutoCloseable

public class JsonReader
extends Object
implements ObjectReader

Field Summary

Fields

Modifier and Type	Field and Description
protected double	_doubleValue
protected long	_intValue
protected static int[]	SKIPPED_TOKENS

Constructor Summary

Constructors

Constructor and Description
JsonReader(Reader reader, boolean strictDoubleParse, boolean readMetadata)
JsonReader(String source)

Method Summary

Methods

Modifier and Type	Method and Description
protected void	begin(int character, JsonType type)
ObjectReader	beginArray() Starts reading an array.
ObjectReader	beginObject() Starts reading a object.
void	close()
int	column()
protected ValueType	consumeLiteral() Reads the next literal value into _booleanValue, _doubleValue or _intValue and returns the type of the readed literal, possible values are : INTEGER, DOUBLE, BOOLEAN, NULL.
protected String	consumeString(int token)
protected ValueType	consumeValue()
JsonType	enclosingType()
protected void	end(int character, JsonType type)
ObjectReader	endArray() Ends the array.
ObjectReader	endObject() Ends the object.
ValueType	getValueType()
boolean	hasNext()
protected boolean	isEOF()
String	metadata(String name)
String	name()
ValueType	next() If we are in a object it will read the next name/value pair and if we are in an array it will read the next value (except if value is of complex type, in that case after the call to next() you must use one of beginXXX methods).
ObjectReader	nextObjectMetadata() Will read nexts object metadata.
protected char	readEscaped()
protected void	readMetadata()
protected int	readNextToken(boolean consume)
int	row()
ObjectReader	skipValue() If the value is of complex type it will skip its content.
boolean	valueAsBoolean()
byte[]	valueAsByteArray()
double	valueAsDouble()
float	valueAsFloat()
int	valueAsInt()
long	valueAsLong()
short	valueAsShort()
String	valueAsString()

Methods inherited from class java.lang.Object

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

Field Detail

SKIPPED_TOKENS

protected static final int[] SKIPPED_TOKENS

_intValue

protected long _intValue

_doubleValue

protected double _doubleValue

Constructor Detail

JsonReader

public JsonReader(String source)

JsonReader

public JsonReader(Reader reader,
          boolean strictDoubleParse,
          boolean readMetadata)

Method Detail

close

public void close()

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

beginArray

public ObjectReader beginArray()

Description copied from interface: ObjectReader

Starts reading an array. Arrays contain only values. Call ObjectReader.endArray() when the array contains no more values.

Specified by:

beginArray in interface ObjectReader

Returns:

a reference to the reader.

beginObject

public ObjectReader beginObject()

Description copied from interface: ObjectReader

Starts reading a object. Objects contain name/value pairs. Call ObjectReader.endObject() when the objects contains no more properties.

Specified by:

beginObject in interface ObjectReader

Returns:

a reference to the reader.

nextObjectMetadata

public ObjectReader nextObjectMetadata()

Description copied from interface: ObjectReader

Will read nexts object metadata. You can call this method as many times as you want, with the condition that you use only ObjectReader.metadata(String) method. For example if you call ObjectReader.beginObject() you wont be able to do it anymore (however you still can retrieve the metadata!).

Specified by:

nextObjectMetadata in interface ObjectReader

Returns:

a reference to the reader.

endArray

public ObjectReader endArray()

Description copied from interface: ObjectReader

Ends the array. If you were not in an array or the array contains more data, an exception will be thrown.

Specified by:

endArray in interface ObjectReader

Returns:

a reference to the reader.

endObject

public ObjectReader endObject()

Description copied from interface: ObjectReader

Ends the object. If you were not in an object or the object contains more data, an exception will be thrown.

Specified by:

endObject in interface ObjectReader

Returns:

a reference to the reader.

name

public String name()

Specified by:

name in interface ObjectReader

Returns:

the name of current property, valid only if we are in a object and you called ObjectReader.next() before.

valueAsString

public String valueAsString()

Specified by:

valueAsString in interface ObjectReader

Returns:

the current value as a String. It will try to convert the actual value to String if its not of that type.

valueAsInt

public int valueAsInt()

Specified by:

valueAsInt in interface ObjectReader

Returns:

See Also:

ObjectReader.valueAsString()

valueAsLong

public long valueAsLong()

Specified by:

valueAsLong in interface ObjectReader

Returns:

See Also:

ObjectReader.valueAsString()

valueAsDouble

public double valueAsDouble()

Specified by:

valueAsDouble in interface ObjectReader

Returns:

See Also:

ObjectReader.valueAsString()

valueAsShort

public short valueAsShort()

Specified by:

valueAsShort in interface ObjectReader

Returns:

See Also:

ObjectReader.valueAsString()

valueAsFloat

public float valueAsFloat()

Specified by:

valueAsFloat in interface ObjectReader

Returns:

See Also:

ObjectReader.valueAsString()

valueAsBoolean

public boolean valueAsBoolean()

Specified by:

valueAsBoolean in interface ObjectReader

Returns:

See Also:

ObjectReader.valueAsString()

valueAsByteArray

public byte[] valueAsByteArray()

Specified by:

valueAsByteArray in interface ObjectReader

Returns:

the incoming base64 string converted to a byte array.

metadata

public String metadata(String name)

Specified by:

metadata in interface ObjectReader

Parameters:

name - the name of the metadata to retrieve.

Returns:

value of metadata with name as key or null if there is no such metadata.

getValueType

public ValueType getValueType()

Specified by:

getValueType in interface ObjectReader

Returns:

The type of current value.

See Also:

ValueType

skipValue

public ObjectReader skipValue()

Description copied from interface: ObjectReader

If the value is of complex type it will skip its content.

Specified by:

skipValue in interface ObjectReader

Returns:

a reference to the reader.

hasNext

public boolean hasNext()

Specified by:

hasNext in interface ObjectReader

Returns:

true if there is a next property or value, false otherwise.

next

public ValueType next()

Description copied from interface: ObjectReader

If we are in a object it will read the next name/value pair and if we are in an array it will read the next value (except if value is of complex type, in that case after the call to next() you must use one of beginXXX methods).

Specified by:

next in interface ObjectReader

Returns:

the type of the value, see ValueType for possible types.

enclosingType

public JsonType enclosingType()

Specified by:

enclosingType in interface ObjectReader

consumeValue

protected final ValueType consumeValue()

readMetadata

protected final void readMetadata()

begin

protected final void begin(int character,
         JsonType type)

end

protected final void end(int character,
       JsonType type)

consumeString

protected final String consumeString(int token)

consumeLiteral

protected final ValueType consumeLiteral()

Reads the next literal value into _booleanValue, _doubleValue or _intValue and returns the type of the readed literal, possible values are : INTEGER, DOUBLE, BOOLEAN, NULL. When calling this method the _cursor must be positioned on the first character of the value in the _buffer, you can ensure that by calling readNextToken(boolean).

readNextToken

protected final int readNextToken(boolean consume)

readEscaped

protected final char readEscaped()

isEOF

protected final boolean isEOF()

column

public int column()

Specified by:

column in interface ObjectReader

row

public int row()

Specified by:

row in interface ObjectReader