Package org.apache.commons.jxpath.util
Class MethodLookupUtils
- java.lang.Object
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- org.apache.commons.jxpath.util.MethodLookupUtils
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public class MethodLookupUtils extends java.lang.Object
Method lookup utilities, which find static and non-static methods as well as constructors based on a name and list of parameters.- Version:
- $Revision: 670727 $ $Date: 2008-06-23 15:10:38 -0500 (Mon, 23 Jun 2008) $
- Author:
- Dmitri Plotnikov
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Field Summary
Fields Modifier and Type Field Description private static int
APPROXIMATE_MATCH
private static int
EXACT_MATCH
private static int
NO_MATCH
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Constructor Summary
Constructors Constructor Description MethodLookupUtils()
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static java.lang.reflect.Constructor
lookupConstructor(java.lang.Class targetClass, java.lang.Object[] parameters)
Look up a constructor.static java.lang.reflect.Method
lookupMethod(java.lang.Class targetClass, java.lang.String name, java.lang.Object[] parameters)
Look up a method.static java.lang.reflect.Method
lookupStaticMethod(java.lang.Class targetClass, java.lang.String name, java.lang.Object[] parameters)
Look up a static method.private static int
matchParameterTypes(java.lang.Class[] types, java.lang.Object[] parameters)
Return a match code of objects to types.private static int
matchType(java.lang.Class expected, java.lang.Object object)
Return a match code between an object and type.
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Field Detail
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NO_MATCH
private static final int NO_MATCH
- See Also:
- Constant Field Values
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APPROXIMATE_MATCH
private static final int APPROXIMATE_MATCH
- See Also:
- Constant Field Values
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EXACT_MATCH
private static final int EXACT_MATCH
- See Also:
- Constant Field Values
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Method Detail
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lookupConstructor
public static java.lang.reflect.Constructor lookupConstructor(java.lang.Class targetClass, java.lang.Object[] parameters)
Look up a constructor.- Parameters:
targetClass
- the class constructedparameters
- arguments- Returns:
- Constructor found if any.
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lookupStaticMethod
public static java.lang.reflect.Method lookupStaticMethod(java.lang.Class targetClass, java.lang.String name, java.lang.Object[] parameters)
Look up a static method.- Parameters:
targetClass
- the owning classname
- method nameparameters
- method parameters- Returns:
- Method found if any
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lookupMethod
public static java.lang.reflect.Method lookupMethod(java.lang.Class targetClass, java.lang.String name, java.lang.Object[] parameters)
Look up a method.- Parameters:
targetClass
- owning classname
- method nameparameters
- method parameters- Returns:
- Method found if any
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matchParameterTypes
private static int matchParameterTypes(java.lang.Class[] types, java.lang.Object[] parameters)
Return a match code of objects to types.- Parameters:
types
- Class[] of expected typesparameters
- Object[] to attempt to match- Returns:
- int code
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matchType
private static int matchType(java.lang.Class expected, java.lang.Object object)
Return a match code between an object and type.- Parameters:
expected
- class to testobject
- object to test- Returns:
- int code
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