jadex.javaparser.javaccimpl

Class ReflectNode

java.lang.Object

jadex.javaparser.javaccimpl.SimpleNode

jadex.javaparser.javaccimpl.ExpressionNode

jadex.javaparser.javaccimpl.ReflectNode

All Implemented Interfaces:

IParsedExpression, Node, java.io.Serializable

public class ReflectNode
extends ExpressionNode

A node for a constructor or method invocation or field access.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected java.lang.reflect.Method	accessor The field accessor method (for static and nonstatic fields).
protected java.lang.Object[]	args The argument values (for constructors and methods).
protected java.lang.Class[]	argtypes The argument types (for constructors and methods).
protected java.lang.Class	clazz The clazz.
static int	CONSTRUCTOR The constructor type.
protected java.lang.reflect.Constructor[]	constructors The possible constructors (for constructor nodes).
protected java.lang.reflect.Field	field The field (for static and nonstatic fields).
static int	FIELD The field type.
static int	METHOD The method type.
protected java.lang.reflect.Method[]	methods The possible methods (for static and nonstatic methods).
protected boolean	reloadable Flag indicating that this node is a candidate dynamic class reloading (currently only supported for plan constructors).
protected java.lang.Class	reloadedclass The dynamically reloaded class (currently only for constructor nodes).
static int	STATIC_FIELD The static field type.
static int	STATIC_METHOD The static method type.
protected int	type The reflect node type.

Fields inherited from class jadex.javaparser.javaccimpl.ExpressionNode

constant, constant_value, expressiontext, imports, static_type, text

Fields inherited from class jadex.javaparser.javaccimpl.SimpleNode

children, id, parent

Constructor Summary

Constructors

Constructor and Description
ReflectNode(ParserImpl p, int id) Create an expression node.

Method Summary

Modifier and Type	Method and Description
protected java.lang.Object	accessField(java.lang.Object ref, java.lang.Class clazz, IValueFetcher fetcher) Access a field.
boolean	equals(java.lang.Object o) Test if two nodes are equal.
protected java.lang.reflect.Constructor[]	findConstructors(java.lang.Class clazz, java.lang.Class[] argtypes) Find all matching constructors of a given class.
protected java.lang.reflect.Method[]	findMethods(java.lang.Class clazz, java.lang.Class[] argtypes) Find all matching methods of a given class.
protected java.lang.reflect.Method	getMethodForMethod(java.lang.reflect.Method method) Find method declared in public class for a given method.
int	getType() Get the constructor type.
java.lang.Object	getValue(IValueFetcher fetcher) Evaluate the expression in the given state with respect to given parameters.
int	hashCode() Get the hash code for the node.
protected java.lang.Object	invokeConstructor(java.lang.Class clazz, java.lang.Class[] argtypes, java.lang.Object[] args) Find and invoke a constructor.
protected java.lang.Object	invokeMethod(java.lang.Object ref, java.lang.Class clazz, java.lang.Class[] argtypes, java.lang.Object[] args) Find and invoke a method.
void	precompile() Precompute the set of matching constructors if possible.
void	setType(int type) Set the constructor type.
java.lang.String	toPlainString() Create a string representation of this node and its subnodes.

Methods inherited from class jadex.javaparser.javaccimpl.ExpressionNode

appendText, getConstantValue, getExpressionText, getParameters, getStaticType, getText, getUnboundParameterNodes, isConstant, precompileTree, setConstant, setConstantValue, setExpressionText, setStaticType, setText, subnodeToString, throwEvaluationException, throwParseException, toString, toString

Methods inherited from class jadex.javaparser.javaccimpl.SimpleNode

dump, jjtAddChild, jjtClose, jjtGetChild, jjtGetNumChildren, jjtGetParent, jjtOpen, jjtSetParent

Methods inherited from class java.lang.Object

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

Field Detail

CONSTRUCTOR

public static final int CONSTRUCTOR

The constructor type.

See Also:

Constant Field Values

STATIC_METHOD

public static final int STATIC_METHOD

The static method type.

See Also:

Constant Field Values

STATIC_FIELD

public static final int STATIC_FIELD

The static field type.

See Also:

Constant Field Values

METHOD

public static final int METHOD

The method type.

See Also:

Constant Field Values

FIELD

public static final int FIELD

The field type.

See Also:

Constant Field Values

type

protected int type

The reflect node type.

clazz

protected java.lang.Class clazz

The clazz.

argtypes

protected transient java.lang.Class[] argtypes

The argument types (for constructors and methods).

args

protected transient java.lang.Object[] args

The argument values (for constructors and methods).

constructors

protected transient java.lang.reflect.Constructor[] constructors

The possible constructors (for constructor nodes).

reloadedclass

protected transient java.lang.Class reloadedclass

The dynamically reloaded class (currently only for constructor nodes).

methods

protected transient java.lang.reflect.Method[] methods

The possible methods (for static and nonstatic methods).

accessor

protected transient java.lang.reflect.Method accessor

The field accessor method (for static and nonstatic fields).

field

protected transient java.lang.reflect.Field field

The field (for static and nonstatic fields).

reloadable

protected boolean reloadable

Flag indicating that this node is a candidate dynamic class reloading (currently only supported for plan constructors).

Constructor Detail

ReflectNode

public ReflectNode(ParserImpl p,
                   int id)

Create an expression node.

Parameters:

p - The parser.

id - The id.

Method Detail

setType

public void setType(int type)

Set the constructor type.

Parameters:

type - The constrcutor type.

getType

public int getType()

Get the constructor type.

Returns:

The constructor type.

precompile

public void precompile()

Precompute the set of matching constructors if possible.

Overrides:

precompile in class ExpressionNode

getValue

public java.lang.Object getValue(IValueFetcher fetcher)

Evaluate the expression in the given state with respect to given parameters.

Specified by:

getValue in interface IParsedExpression

Specified by:

getValue in class ExpressionNode

Parameters:

params - The parameters (string, value pairs), if any.

Returns:

The value of the term.

toPlainString

public java.lang.String toPlainString()

Create a string representation of this node and its subnodes.

Specified by:

toPlainString in interface Node

Overrides:

toPlainString in class ExpressionNode

Returns:

A string representation of this node.

findConstructors

protected java.lang.reflect.Constructor[] findConstructors(java.lang.Class clazz,
                                                           java.lang.Class[] argtypes)

Find all matching constructors of a given class.

Parameters:

clazz - The class.

argtypes - The argument types.

Returns:

The matched constructors.

findMethods

protected java.lang.reflect.Method[] findMethods(java.lang.Class clazz,
                                                 java.lang.Class[] argtypes)

Find all matching methods of a given class.

Parameters:

clazz - The class.

argtypes - The argument types.

Returns:

The matched methods.

invokeConstructor

protected java.lang.Object invokeConstructor(java.lang.Class clazz,
                                             java.lang.Class[] argtypes,
                                             java.lang.Object[] args)
                                      throws java.lang.Exception

Find and invoke a constructor.

Parameters:

clazz - The class to instantiate.

argtypes - The actual argument types.

args - The actual argument values.

Returns:

The instantiated object.

Throws:

java.lang.Exception

invokeMethod

protected java.lang.Object invokeMethod(java.lang.Object ref,
                                        java.lang.Class clazz,
                                        java.lang.Class[] argtypes,
                                        java.lang.Object[] args)
                                 throws java.lang.Exception

Find and invoke a method.

Parameters:

ref - The object on which to invoke (may be null for static methods).

clazz - The class to instantiate.

argtypes - The actual argument types.

args - The actual argument values.

Returns:

The return value.

Throws:

java.lang.Exception

accessField

protected java.lang.Object accessField(java.lang.Object ref,
                                       java.lang.Class clazz,
                                       IValueFetcher fetcher)
                                throws java.lang.IllegalArgumentException,
                                       java.lang.IllegalAccessException,
                                       java.lang.NoSuchFieldException

Access a field.

Throws:

java.lang.IllegalAccessException

java.lang.IllegalArgumentException

java.lang.NoSuchFieldException

getMethodForMethod

protected java.lang.reflect.Method getMethodForMethod(java.lang.reflect.Method method)

Find method declared in public class for a given method.

equals

public boolean equals(java.lang.Object o)

Test if two nodes are equal.

Overrides:

equals in class ExpressionNode

hashCode

public int hashCode()

Get the hash code for the node.

Overrides:

hashCode in class ExpressionNode