Package org.apache.commons.modeler.util
Class IntrospectionUtils
java.lang.Object
org.apache.commons.modeler.util.IntrospectionUtils
Utils for introspection and reflection
Source: jakarta-tomcat-connector/util
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Nested Class Summary
Nested ClassesModifier and TypeClassDescriptionstatic interface
static interface
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Field Summary
Fields -
Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionstatic void
addJarsFromClassPath
(Vector jars, String cp) add elements from the classpath cp to a Vector jars as file URLs (We use Vector for JDK 1.1 compat).static void
addToClassPath
(Vector cpV, String dir) Add all the jar files in a dir to the classpath, represented as a Vector of URLs.static void
static void
static Object
callMethod0
(Object target, String methodN) static Object
callMethod1
(Object target, String methodN, Object param1, String typeParam1, ClassLoader cl) static Object
callMethodN
(Object target, String methodN, Object[] params, Class[] typeParams) static String
capitalize
(String name) Reverse of Introspector.decapitalizestatic String
classPathAdd
(URL[] urls, String cp) Adds classpath entries from a vector of URL's to the "tc_path_add" System property.static void
clear()
(package private) static void
static void
displayClassPath
(String msg, URL[] cp) Debug method, display the classpathstatic void
Execute a no-param method.static String[]
static Method
findMethod
(Class c, String name, Class[] params) static Method[]
findMethods
(Class c) static String[]
static Object
getAttribute
(Object proxy, String n) Call void getAttribute( String )static URL[]
getClassPath
(String dir, String cpath, String cpathProp, boolean addTools) Construct a URL classpath from files in a directory, a cpath property, and tools.jar.static URL[]
Return a URL[] that can be used to construct a class loaderstatic String[]
getFilesByExt
(String ld, String ext) Return all files with a given extension in a dirstatic Object
getProperty
(Object o, String name) static URL
Construct a file url from a file, using a base dirstatic ClassLoader
getURLClassLoader
(URL[] urls, ClassLoader parent) Construct a URLClassLoader.static String
guessInstall
(String installSysProp, String homeSysProp, String jarName) static String
guessInstall
(String installSysProp, String homeSysProp, String jarName, String classFile) Guess a product install/home by analyzing the class path.static boolean
Test if the object implements a particular methodstatic boolean
processArgs
(Object proxy, String[] args) static boolean
static String
replaceProperties
(String value, Object getter) Deprecated.Use the explicit methodstatic String
replaceProperties
(String value, Hashtable staticProp, IntrospectionUtils.PropertySource[] dynamicProp) Replace ${NAME} with the property valuestatic void
setAttribute
(Object proxy, String n, Object v) Call void setAttribute( String ,Object )static void
setProperty
(Object o, String name) static void
setProperty
(Object o, String name, String value) Find a method with the right name If found, call the method ( if param is int or boolean we'll convert value to the right type before) - that means you can have setDebug(1).static String
unCapitalize
(String name)
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Field Details
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NO_PARAMS
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STRING_OBJ_PARAM
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STRING_PARAM
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PATH_SEPARATOR
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objectMethods
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emptyArray
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dbg
static final int dbg- See Also:
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Constructor Details
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IntrospectionUtils
public IntrospectionUtils()
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Method Details
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execute
Execute a no-param method.- Throws:
Exception
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setAttribute
Call void setAttribute( String ,Object )- Throws:
Exception
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getAttribute
Call void getAttribute( String )- Throws:
Exception
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getURLClassLoader
Construct a URLClassLoader. Will compile and work in JDK1.1 too. -
guessInstall
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guessInstall
public static String guessInstall(String installSysProp, String homeSysProp, String jarName, String classFile) Guess a product install/home by analyzing the class path. It works for product using the pattern: lib/executable.jar or if executable.jar is included in classpath by a shell script. ( java -jar also works ) Insures both "install" and "home" System properties are set. If either or both System properties are unset, "install" and "home" will be set to the same value. This value will be the other System property that is set, or the guessed value if neither is set. -
displayClassPath
Debug method, display the classpath -
classPathAdd
Adds classpath entries from a vector of URL's to the "tc_path_add" System property. This System property lists the classpath entries common to web applications. This System property is currently used by Jasper when its JSP servlet compiles the Java file for a JSP. -
setProperty
Find a method with the right name If found, call the method ( if param is int or boolean we'll convert value to the right type before) - that means you can have setDebug(1). -
getProperty
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setProperty
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replaceProperties
Deprecated.Use the explicit methodReplace ${NAME} with the property value -
replaceProperties
public static String replaceProperties(String value, Hashtable staticProp, IntrospectionUtils.PropertySource[] dynamicProp) Replace ${NAME} with the property value -
capitalize
Reverse of Introspector.decapitalize -
unCapitalize
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addToClassPath
Add all the jar files in a dir to the classpath, represented as a Vector of URLs. -
addToolsJar
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getFilesByExt
Return all files with a given extension in a dir -
getURL
Construct a file url from a file, using a base dir -
addJarsFromClassPath
public static void addJarsFromClassPath(Vector jars, String cp) throws IOException, MalformedURLException add elements from the classpath cp to a Vector jars as file URLs (We use Vector for JDK 1.1 compat).- Parameters:
jars
- A vector of URLscp
- a String classpath of directory or jar file elements separated by path.separator delimiters.- Throws:
IOException
MalformedURLException
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getClassPath
Return a URL[] that can be used to construct a class loader -
getClassPath
public static URL[] getClassPath(String dir, String cpath, String cpathProp, boolean addTools) throws IOException, MalformedURLException Construct a URL classpath from files in a directory, a cpath property, and tools.jar.- Throws:
IOException
MalformedURLException
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processArgs
- Throws:
Exception
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processArgs
public static boolean processArgs(Object proxy, String[] args, String[] args0, String[] args1, Hashtable aliases) throws Exception - Throws:
Exception
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findVoidSetters
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findBooleanSetters
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clear
public static void clear() -
findMethods
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findMethod
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hasHook
Test if the object implements a particular method -
callMain
- Throws:
Exception
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callMethod1
public static Object callMethod1(Object target, String methodN, Object param1, String typeParam1, ClassLoader cl) throws Exception - Throws:
Exception
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callMethod0
- Throws:
Exception
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callMethodN
public static Object callMethodN(Object target, String methodN, Object[] params, Class[] typeParams) throws Exception - Throws:
Exception
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d
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