Package org.apache.commons.modeler.util
Class IntrospectionUtils
- java.lang.Object
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- org.apache.commons.modeler.util.IntrospectionUtils
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public final class IntrospectionUtils extends java.lang.Object
Utils for introspection and reflection Source: jakarta-tomcat-connector/util
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Nested Class Summary
Nested Classes Modifier and Type Class Description static interface
IntrospectionUtils.AttributeHolder
static interface
IntrospectionUtils.PropertySource
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Field Summary
Fields Modifier and Type Field Description (package private) static int
dbg
(package private) static java.lang.Object[]
emptyArray
(package private) static java.lang.Class[]
NO_PARAMS
(package private) static java.util.Hashtable
objectMethods
static java.lang.String
PATH_SEPARATOR
(package private) static java.lang.Class[]
STRING_OBJ_PARAM
(package private) static java.lang.Class[]
STRING_PARAM
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Constructor Summary
Constructors Constructor Description IntrospectionUtils()
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Method Summary
All Methods Static Methods Concrete Methods Deprecated Methods Modifier and Type Method Description static void
addJarsFromClassPath(java.util.Vector jars, java.lang.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(java.util.Vector cpV, java.lang.String dir)
Add all the jar files in a dir to the classpath, represented as a Vector of URLs.static void
addToolsJar(java.util.Vector v)
static void
callMain(java.lang.Class c, java.lang.String[] args)
static java.lang.Object
callMethod0(java.lang.Object target, java.lang.String methodN)
static java.lang.Object
callMethod1(java.lang.Object target, java.lang.String methodN, java.lang.Object param1, java.lang.String typeParam1, java.lang.ClassLoader cl)
static java.lang.Object
callMethodN(java.lang.Object target, java.lang.String methodN, java.lang.Object[] params, java.lang.Class[] typeParams)
static java.lang.String
capitalize(java.lang.String name)
Reverse of Introspector.decapitalizestatic java.lang.String
classPathAdd(java.net.URL[] urls, java.lang.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
d(java.lang.String s)
static void
displayClassPath(java.lang.String msg, java.net.URL[] cp)
Debug method, display the classpathstatic void
execute(java.lang.Object proxy, java.lang.String method)
Execute a no-param method.static java.lang.String[]
findBooleanSetters(java.lang.Class c)
static java.lang.reflect.Method
findMethod(java.lang.Class c, java.lang.String name, java.lang.Class[] params)
static java.lang.reflect.Method[]
findMethods(java.lang.Class c)
static java.lang.String[]
findVoidSetters(java.lang.Class c)
static java.lang.Object
getAttribute(java.lang.Object proxy, java.lang.String n)
Call void getAttribute( String )static java.net.URL[]
getClassPath(java.lang.String dir, java.lang.String cpath, java.lang.String cpathProp, boolean addTools)
Construct a URL classpath from files in a directory, a cpath property, and tools.jar.static java.net.URL[]
getClassPath(java.util.Vector v)
Return a URL[] that can be used to construct a class loaderstatic java.lang.String[]
getFilesByExt(java.lang.String ld, java.lang.String ext)
Return all files with a given extension in a dirstatic java.lang.Object
getProperty(java.lang.Object o, java.lang.String name)
static java.net.URL
getURL(java.lang.String base, java.lang.String file)
Construct a file url from a file, using a base dirstatic java.lang.ClassLoader
getURLClassLoader(java.net.URL[] urls, java.lang.ClassLoader parent)
Construct a URLClassLoader.static java.lang.String
guessInstall(java.lang.String installSysProp, java.lang.String homeSysProp, java.lang.String jarName)
static java.lang.String
guessInstall(java.lang.String installSysProp, java.lang.String homeSysProp, java.lang.String jarName, java.lang.String classFile)
Guess a product install/home by analyzing the class path.static boolean
hasHook(java.lang.Object obj, java.lang.String methodN)
Test if the object implements a particular methodstatic boolean
processArgs(java.lang.Object proxy, java.lang.String[] args)
static boolean
processArgs(java.lang.Object proxy, java.lang.String[] args, java.lang.String[] args0, java.lang.String[] args1, java.util.Hashtable aliases)
static java.lang.String
replaceProperties(java.lang.String value, java.lang.Object getter)
Deprecated.Use the explicit methodstatic java.lang.String
replaceProperties(java.lang.String value, java.util.Hashtable staticProp, IntrospectionUtils.PropertySource[] dynamicProp)
Replace ${NAME} with the property valuestatic void
setAttribute(java.lang.Object proxy, java.lang.String n, java.lang.Object v)
Call void setAttribute( String ,Object )static void
setProperty(java.lang.Object o, java.lang.String name)
static void
setProperty(java.lang.Object o, java.lang.String name, java.lang.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 java.lang.String
unCapitalize(java.lang.String name)
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Field Detail
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NO_PARAMS
static final java.lang.Class[] NO_PARAMS
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STRING_OBJ_PARAM
static final java.lang.Class[] STRING_OBJ_PARAM
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STRING_PARAM
static final java.lang.Class[] STRING_PARAM
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PATH_SEPARATOR
public static java.lang.String PATH_SEPARATOR
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objectMethods
static java.util.Hashtable objectMethods
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emptyArray
static java.lang.Object[] emptyArray
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dbg
static final int dbg
- See Also:
- Constant Field Values
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Method Detail
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execute
public static void execute(java.lang.Object proxy, java.lang.String method) throws java.lang.Exception
Execute a no-param method.- Throws:
java.lang.Exception
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setAttribute
public static void setAttribute(java.lang.Object proxy, java.lang.String n, java.lang.Object v) throws java.lang.Exception
Call void setAttribute( String ,Object )- Throws:
java.lang.Exception
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getAttribute
public static java.lang.Object getAttribute(java.lang.Object proxy, java.lang.String n) throws java.lang.Exception
Call void getAttribute( String )- Throws:
java.lang.Exception
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getURLClassLoader
public static java.lang.ClassLoader getURLClassLoader(java.net.URL[] urls, java.lang.ClassLoader parent)
Construct a URLClassLoader. Will compile and work in JDK1.1 too.
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guessInstall
public static java.lang.String guessInstall(java.lang.String installSysProp, java.lang.String homeSysProp, java.lang.String jarName)
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guessInstall
public static java.lang.String guessInstall(java.lang.String installSysProp, java.lang.String homeSysProp, java.lang.String jarName, java.lang.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.
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displayClassPath
public static void displayClassPath(java.lang.String msg, java.net.URL[] cp)
Debug method, display the classpath
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classPathAdd
public static java.lang.String classPathAdd(java.net.URL[] urls, java.lang.String cp)
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.
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setProperty
public static void setProperty(java.lang.Object o, java.lang.String name, java.lang.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).
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getProperty
public static java.lang.Object getProperty(java.lang.Object o, java.lang.String name)
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setProperty
public static void setProperty(java.lang.Object o, java.lang.String name)
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replaceProperties
public static java.lang.String replaceProperties(java.lang.String value, java.lang.Object getter)
Deprecated.Use the explicit methodReplace ${NAME} with the property value
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replaceProperties
public static java.lang.String replaceProperties(java.lang.String value, java.util.Hashtable staticProp, IntrospectionUtils.PropertySource[] dynamicProp)
Replace ${NAME} with the property value
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capitalize
public static java.lang.String capitalize(java.lang.String name)
Reverse of Introspector.decapitalize
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unCapitalize
public static java.lang.String unCapitalize(java.lang.String name)
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addToClassPath
public static void addToClassPath(java.util.Vector cpV, java.lang.String dir)
Add all the jar files in a dir to the classpath, represented as a Vector of URLs.
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addToolsJar
public static void addToolsJar(java.util.Vector v)
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getFilesByExt
public static java.lang.String[] getFilesByExt(java.lang.String ld, java.lang.String ext)
Return all files with a given extension in a dir
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getURL
public static java.net.URL getURL(java.lang.String base, java.lang.String file)
Construct a file url from a file, using a base dir
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addJarsFromClassPath
public static void addJarsFromClassPath(java.util.Vector jars, java.lang.String cp) throws java.io.IOException, java.net.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:
java.io.IOException
java.net.MalformedURLException
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getClassPath
public static java.net.URL[] getClassPath(java.util.Vector v)
Return a URL[] that can be used to construct a class loader
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getClassPath
public static java.net.URL[] getClassPath(java.lang.String dir, java.lang.String cpath, java.lang.String cpathProp, boolean addTools) throws java.io.IOException, java.net.MalformedURLException
Construct a URL classpath from files in a directory, a cpath property, and tools.jar.- Throws:
java.io.IOException
java.net.MalformedURLException
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processArgs
public static boolean processArgs(java.lang.Object proxy, java.lang.String[] args) throws java.lang.Exception
- Throws:
java.lang.Exception
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processArgs
public static boolean processArgs(java.lang.Object proxy, java.lang.String[] args, java.lang.String[] args0, java.lang.String[] args1, java.util.Hashtable aliases) throws java.lang.Exception
- Throws:
java.lang.Exception
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findVoidSetters
public static java.lang.String[] findVoidSetters(java.lang.Class c)
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findBooleanSetters
public static java.lang.String[] findBooleanSetters(java.lang.Class c)
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clear
public static void clear()
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findMethods
public static java.lang.reflect.Method[] findMethods(java.lang.Class c)
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findMethod
public static java.lang.reflect.Method findMethod(java.lang.Class c, java.lang.String name, java.lang.Class[] params)
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hasHook
public static boolean hasHook(java.lang.Object obj, java.lang.String methodN)
Test if the object implements a particular method
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callMain
public static void callMain(java.lang.Class c, java.lang.String[] args) throws java.lang.Exception
- Throws:
java.lang.Exception
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callMethod1
public static java.lang.Object callMethod1(java.lang.Object target, java.lang.String methodN, java.lang.Object param1, java.lang.String typeParam1, java.lang.ClassLoader cl) throws java.lang.Exception
- Throws:
java.lang.Exception
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callMethod0
public static java.lang.Object callMethod0(java.lang.Object target, java.lang.String methodN) throws java.lang.Exception
- Throws:
java.lang.Exception
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callMethodN
public static java.lang.Object callMethodN(java.lang.Object target, java.lang.String methodN, java.lang.Object[] params, java.lang.Class[] typeParams) throws java.lang.Exception
- Throws:
java.lang.Exception
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d
static void d(java.lang.String s)
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