Package javassist.bytecode

Class ParameterAnnotationsAttribute

java.lang.Object

javassist.bytecode.AttributeInfo

javassist.bytecode.ParameterAnnotationsAttribute

public class ParameterAnnotationsAttribute
extends AttributeInfo

A class representing RuntimeVisibleAnnotations_attribute and RuntimeInvisibleAnnotations_attribute.

To obtain an ParameterAnnotationAttribute object, invoke getAttribute(ParameterAnnotationsAttribute.invisibleTag) in MethodInfo. The obtained attribute is a runtime invisible annotations attribute. If the parameter is ParameterAnnotationAttribute.visibleTag, then the obtained attribute is a runtime visible one.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	invisibleTag	The name of the RuntimeInvisibleParameterAnnotations attribute.
static final String	visibleTag	The name of the RuntimeVisibleParameterAnnotations attribute.

Constructor Summary

Constructors

Constructor	Description
ParameterAnnotationsAttribute(ConstPool cp, String attrname)	Constructs an empty Runtime(In)VisibleParameterAnnotations_attribute.
ParameterAnnotationsAttribute(ConstPool cp, String attrname, byte[] info)	Constructs a Runtime(In)VisibleParameterAnnotations_attribute.

Method Summary

Modifier and Type	Method	Description
AttributeInfo	copy(ConstPool newCp, Map<String,String> classnames)	Copies this attribute and returns a new copy.
Annotation[][]	getAnnotations()	Parses the annotations and returns a data structure representing that parsed annotations.
int	numParameters()	Returns num_parameters.
void	setAnnotations(Annotation[][] params)	Changes the annotations represented by this object according to the given array of Annotation objects.
String	toString()	Returns a string representation of this object.

Methods inherited from class javassist.bytecode.AttributeInfo

get, getConstPool, getName, length, set

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Details

visibleTag

public static final String visibleTag

The name of the RuntimeVisibleParameterAnnotations attribute.

See Also:

• Constant Field Values

invisibleTag

public static final String invisibleTag

The name of the RuntimeInvisibleParameterAnnotations attribute.

See Also:

• Constant Field Values

Constructor Details

ParameterAnnotationsAttribute

public ParameterAnnotationsAttribute(ConstPool cp,
 String attrname,
 byte[] info)

Constructs a Runtime(In)VisibleParameterAnnotations_attribute.

Parameters:

cp - constant pool

attrname - attribute name (visibleTag or invisibleTag).

info - the contents of this attribute. It does not include attribute_name_index or attribute_length.

ParameterAnnotationsAttribute

public ParameterAnnotationsAttribute(ConstPool cp,
 String attrname)

Constructs an empty Runtime(In)VisibleParameterAnnotations_attribute. A new annotation can be later added to the created attribute by setAnnotations().

Parameters:

cp - constant pool

attrname - attribute name (visibleTag or invisibleTag).

See Also:

• setAnnotations(Annotation[][])

Method Details

numParameters

public int numParameters()

Returns num_parameters.

copy

public AttributeInfo copy(ConstPool newCp,
 Map<String,String> classnames)

Copies this attribute and returns a new copy.

Overrides:

copy in class AttributeInfo

Parameters:

newCp - the constant pool table used by the new copy.

classnames - pairs of replaced and substituted class names.

getAnnotations

public Annotation[][] getAnnotations()

Parses the annotations and returns a data structure representing that parsed annotations. Note that changes of the node values of the returned tree are not reflected on the annotations represented by this object unless the tree is copied back to this object by setAnnotations().

Returns:

Each element of the returned array represents an array of annotations that are associated with each method parameter.

See Also:

• setAnnotations(Annotation[][])

setAnnotations

public void setAnnotations(Annotation[][] params)

Changes the annotations represented by this object according to the given array of Annotation objects.

Parameters:

params - the data structure representing the new annotations. Every element of this array is an array of Annotation and it represens annotations of each method parameter.

toString

public String toString()

Returns a string representation of this object.

Overrides:

toString in class Object