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java.lang.Objectorg.apache.tools.ant.util.ReflectUtil
public class ReflectUtil
Utility class to handle reflection on java objects. The class contains static methods to call reflection methods, catch any exceptions, converting them to BuildExceptions.
Method Summary | |
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static java.lang.Object |
getField(java.lang.Object obj,
java.lang.String fieldName)
Get the value of a field in an object. |
static java.lang.Object |
invoke(java.lang.Object obj,
java.lang.String methodName)
Call a method on the object with no parameters. |
static java.lang.Object |
invoke(java.lang.Object obj,
java.lang.String methodName,
java.lang.Class argType,
java.lang.Object arg)
Call a method on the object with one argument. |
static java.lang.Object |
invoke(java.lang.Object obj,
java.lang.String methodName,
java.lang.Class argType1,
java.lang.Object arg1,
java.lang.Class argType2,
java.lang.Object arg2)
Call a method on the object with two argument. |
static java.lang.Object |
invokeStatic(java.lang.Object obj,
java.lang.String methodName)
Call a method on the object with no parameters. |
static java.lang.Object |
newInstance(java.lang.Class ofClass,
java.lang.Class[] argTypes,
java.lang.Object[] args)
Create an instance of a class using the constructor matching the given arguments. |
static boolean |
respondsTo(java.lang.Object o,
java.lang.String methodName)
A method to test if an object responds to a given message (method call) |
static void |
throwBuildException(java.lang.Exception t)
A method to convert an invocationTargetException to a buildexception and throw it. |
static BuildException |
toBuildException(java.lang.Exception t)
A method to convert an invocationTargetException to a buildexception. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Method Detail |
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public static java.lang.Object newInstance(java.lang.Class ofClass, java.lang.Class[] argTypes, java.lang.Object[] args)
public static java.lang.Object invoke(java.lang.Object obj, java.lang.String methodName)
obj
- the object to invoke the method on.methodName
- the name of the method to call
public static java.lang.Object invokeStatic(java.lang.Object obj, java.lang.String methodName)
obj
- the object to invoke the method on.methodName
- the name of the method to call
public static java.lang.Object invoke(java.lang.Object obj, java.lang.String methodName, java.lang.Class argType, java.lang.Object arg)
obj
- the object to invoke the method on.methodName
- the name of the method to callargType
- the type of argument.arg
- the value of the argument.
public static java.lang.Object invoke(java.lang.Object obj, java.lang.String methodName, java.lang.Class argType1, java.lang.Object arg1, java.lang.Class argType2, java.lang.Object arg2)
obj
- the object to invoke the method on.methodName
- the name of the method to callargType1
- the type of the first argument.arg1
- the value of the first argument.argType2
- the type of the second argument.arg2
- the value of the second argument.
public static java.lang.Object getField(java.lang.Object obj, java.lang.String fieldName) throws BuildException
obj
- the object to look at.fieldName
- the name of the field in the object.
BuildException
- if there is an error.public static void throwBuildException(java.lang.Exception t) throws BuildException
t
- the invocation target exception.
BuildException
- the converted exception.public static BuildException toBuildException(java.lang.Exception t)
t
- the invocation target exception.
public static boolean respondsTo(java.lang.Object o, java.lang.String methodName) throws BuildException
o
- the objectmethodName
- the method to check for
BuildException
- if there is a problem.
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