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java.lang.Objectorg.apache.derby.iapi.services.loader.ClassInspector
Methods to find out relationships between classes and methods within a class. All class names within this interface are treated as java language class names, e.g. int, COM.foo.Myclass, int[], java.lang.Object[]. That is java internal class names as defined in the class file format are not understood.
Field Summary | |
private ClassFactory |
cf
|
private static java.lang.String[] |
nonPrimTypeNames
|
private static java.lang.String[] |
primTypeNames
|
Constructor Summary | |
ClassInspector(ClassFactory cf)
DO NOT USE! |
Method Summary | |
boolean |
accessible(java.lang.String className)
Does the named class exist, and is it accessible? |
boolean |
assignableTo(java.lang.String fromClassName,
java.lang.String toClassName)
Is one named class assignable to another named class or interface? |
protected boolean |
classConvertableFromTo(java.lang.Class fromClass,
java.lang.Class toClass,
boolean mixTypes)
Can we convert a fromClass to toClass. |
java.lang.reflect.Member |
findPublicConstructor(java.lang.String receiverType,
java.lang.String[] parmTypes,
java.lang.String[] primParmTypes,
boolean[] isParam)
Find a public constructor that implements a given signature. |
java.lang.reflect.Member |
findPublicField(java.lang.String receiverType,
java.lang.String fieldName,
boolean staticField)
Find a public field for a class. |
java.lang.reflect.Member |
findPublicMethod(java.lang.String receiverType,
java.lang.String methodName,
java.lang.String[] parmTypes,
java.lang.String[] primParmTypes,
boolean[] isParam,
boolean staticMethod,
boolean repeatLastParameter)
Find a public method that implements a given signature. |
java.lang.Class |
getClass(java.lang.String className)
Get (load) the class for the given class name. |
java.lang.String |
getDeclaringClass(java.lang.reflect.Member method)
Get the declaring class for a method. |
java.lang.String[] |
getParameterTypes(java.lang.reflect.Member method)
Get the parameter types for a method described by a Member as a String[]. |
java.lang.String |
getType(java.lang.reflect.Member member)
Get the Java name of the return type from a Member representing a method or the type of a Member representing a field. |
boolean |
instanceOf(java.lang.String className,
java.lang.Object obj)
Is the given object an instance of the named class? |
private boolean |
isMethodMoreSpecificOrEqual(java.lang.reflect.Member T,
java.lang.reflect.Member U,
boolean[] isParam)
Is method/constructor T more or equally specific than method U. |
static boolean |
primitiveType(java.lang.String typeName)
Determine whether a type is a Java primitive, like int or boolean |
static java.lang.String |
readableClassName(java.lang.Class clazz)
Translate a JVM-style type descriptor to a Java-language-style type name. |
private java.lang.reflect.Member |
resolveMethod(java.lang.Class receiverClass,
java.lang.String methodName,
java.lang.Class[] paramClasses,
java.lang.Class[] primParamClasses,
boolean[] isParam,
boolean staticMethod,
boolean repeatLastParameter,
java.lang.reflect.Member[] methods)
Tricky function to resolve a method. |
private boolean |
signatureConvertableFromTo(java.lang.Class[] fromTypes,
java.lang.Class[] primFromTypes,
java.lang.Class[] toTypes,
boolean[] isParam,
boolean mixTypes)
Can we convert a signature from fromTypes(primFromTypes) to toTypes. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
private static final java.lang.String[] primTypeNames
private static final java.lang.String[] nonPrimTypeNames
private final ClassFactory cf
Constructor Detail |
public ClassInspector(ClassFactory cf)
Method Detail |
public boolean instanceOf(java.lang.String className, java.lang.Object obj) throws java.lang.ClassNotFoundException
className
- The name of the classobj
- The object to test to see if it's an instance
of the named class
java.lang.ClassNotFoundException
public boolean assignableTo(java.lang.String fromClassName, java.lang.String toClassName)
fromClassName
- The name of the class to be assignedtoClassName
- The name of the class to be assigned to
public boolean accessible(java.lang.String className) throws java.lang.ClassNotFoundException
className
- The name of the class to test for existence
java.lang.ClassNotFoundException
public java.lang.String getType(java.lang.reflect.Member member)
public java.lang.reflect.Member findPublicMethod(java.lang.String receiverType, java.lang.String methodName, java.lang.String[] parmTypes, java.lang.String[] primParmTypes, boolean[] isParam, boolean staticMethod, boolean repeatLastParameter) throws java.lang.ClassNotFoundException, StandardException
methodName
- The name of the methodparmTypes
- An array of class names representing the
parameter types. Pass a zero-element array if
there are no parameters. Pass a null if it is
okay to match any signature.primParmTypes
- This is used in the second pass of the two-pass
method resolution algorithm. Use primitive type
if it has one, otherwise use same object typeisParam
- Array of booleans telling whether parameter is a ?.staticMethod
- Find a static method.repeatLastParameter
- If true the last parameter may be repeated any number of times (total count must be greater than one).
If false the laste parameter is matched as usual. This also requires an exact match on the last parameter type.
java.lang.ClassNotFoundException
- One or more of the classes does
not exist.
StandardException
- Thrown on ambiguous method invocation.Member
,
Modifier
public java.lang.reflect.Member findPublicField(java.lang.String receiverType, java.lang.String fieldName, boolean staticField) throws StandardException
receiverType
- The class name of the receiverfieldName
- The name of the fieldstaticField
- Find a static field
StandardException
- Class or field does not exist or is not public or a security exception.Member
,
Modifier
public java.lang.reflect.Member findPublicConstructor(java.lang.String receiverType, java.lang.String[] parmTypes, java.lang.String[] primParmTypes, boolean[] isParam) throws java.lang.ClassNotFoundException, StandardException
parmTypes
- An array of class names representing the
parameter types. Pass a zero-element array if
there are no parameters.primParmTypes
- This is used in the second pass of the two-pass
method resolution algorithm. Use primitive type
if it has one, otherwise use same object typeisParam
- Array of booleans telling whether parameter is a ?.
java.lang.ClassNotFoundException
- One or more of the classes does
not exist.
StandardException
- Thrown on ambiguous constructor invocation.Member
,
Modifier
public java.lang.String[] getParameterTypes(java.lang.reflect.Member method)
method
- A Member describing a method
public static boolean primitiveType(java.lang.String typeName)
typeName
- The name of the Java type
private java.lang.reflect.Member resolveMethod(java.lang.Class receiverClass, java.lang.String methodName, java.lang.Class[] paramClasses, java.lang.Class[] primParamClasses, boolean[] isParam, boolean staticMethod, boolean repeatLastParameter, java.lang.reflect.Member[] methods) throws StandardException
receiverClass
- the class who holds the methodsmethodName
- the name of methodparamClasses
- object type classes of input parametersprimParamClasses
- primitive type classes or nullisParam
- isParam (for ?) arraystaticMethod
- static method or not
StandardException
public java.lang.Class getClass(java.lang.String className) throws java.lang.ClassNotFoundException
java.lang.ClassNotFoundException
- Class cannot be found.private boolean isMethodMoreSpecificOrEqual(java.lang.reflect.Member T, java.lang.reflect.Member U, boolean[] isParam)
private boolean signatureConvertableFromTo(java.lang.Class[] fromTypes, java.lang.Class[] primFromTypes, java.lang.Class[] toTypes, boolean[] isParam, boolean mixTypes)
fromTypes
- from types' classesprimFromTypes
- primitive from types or nulltoTypes
- to types' classesisParam
- is parameter (?) or notmixTypes
- mixing object/primitive types for comparisonprotected boolean classConvertableFromTo(java.lang.Class fromClass, java.lang.Class toClass, boolean mixTypes)
fromClass
- from classtoClass
- to classmixTypes
- mixing object/primitive types for comparisonpublic static java.lang.String readableClassName(java.lang.Class clazz)
public java.lang.String getDeclaringClass(java.lang.reflect.Member method)
method
- A Member describing a method
Member.getDeclaringClass()
|
Built on Mon 2007-06-04 09:58:47+0400, from revision ??? | |||||||||
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