org.apache.jasper.runtime

Class JspRuntimeLibrary


public class JspRuntimeLibrary
extends java.lang.Object

Bunch of util methods that are used by code generated for useBean, getProperty and setProperty. The __begin, __end stuff is there so that the JSP engine can actually parse this file and inline them if people don't want runtime dependencies on this class. However, I'm not sure if that works so well right now. It got forgotten at some point. -akv
Authors:
Mandar Raje
Shawn Bayern

Nested Class Summary

protected static class
JspRuntimeLibrary.PrivilegedIntrospectHelper

Method Summary

static String
URLEncode(String s, String enc)
URL encodes a string, based on the supplied character encoding.
static Object
coerce(String s, Class target)
static boolean
coerceToBoolean(String s)
static byte
coerceToByte(String s)
static char
coerceToChar(String s)
static double
coerceToDouble(String s)
static float
coerceToFloat(String s)
static int
coerceToInt(String s)
static long
coerceToLong(String s)
static short
coerceToShort(String s)
static Object
convert(String propertyName, String s, Class t, Class propertyEditorClass)
static void
createTypedArray(String propertyName, Object bean, Method method, String[] values, Class t, Class propertyEditorClass)
Create a typed array.
static String
decode(String encoded)
Decode an URL formatted string.
static String
escapeQueryString(String unescString)
Escape special shell characters.
static String
getContextRelativePath(ServletRequest request, String relativePath)
Convert a possibly relative resource path into a context-relative resource path that starts with a '/'.
static Method
getReadMethod(Class beanClass, String prop)
static Throwable
getThrowable(ServletRequest request)
Returns the value of the javax.servlet.error.exception request attribute value, if present, otherwise the value of the javax.servlet.jsp.jspException request attribute value.
static Object
getValueFromBeanInfoPropertyEditor(Class attrClass, String attrName, String attrValue, Class propertyEditorClass)
static Object
getValueFromPropertyEditorManager(Class attrClass, String attrName, String attrValue)
static Method
getWriteMethod(Class beanClass, String prop)
static Object
handleGetProperty(Object o, String prop)
static void
handleSetProperty(Object bean, String prop, Object value)
static void
handleSetProperty(Object bean, String prop, boolean value)
static void
handleSetProperty(Object bean, String prop, byte value)
static void
handleSetProperty(Object bean, String prop, char value)
static void
handleSetProperty(Object bean, String prop, double value)
static void
handleSetProperty(Object bean, String prop, float value)
static void
handleSetProperty(Object bean, String prop, int value)
static void
handleSetProperty(Object bean, String prop, long value)
static void
handleSetProperty(Object bean, String prop, short value)
static void
handleSetPropertyExpression(Object bean, String prop, String expression, PageContext pageContext, ProtectedFunctionMapper functionMapper)
Use proprietaryEvaluate public static void handleSetPropertyExpression(Object bean, String prop, String expression, PageContext pageContext, VariableResolver variableResolver, FunctionMapper functionMapper ) throws JasperException { try { Method method = getWriteMethod(bean.getClass(), prop); method.invoke(bean, new Object[] { pageContext.getExpressionEvaluator().evaluate( expression, method.getParameterTypes()[0], variableResolver, functionMapper, null ) }); } catch (Exception ex) { throw new JasperException(ex); } }
static void
include(ServletRequest request, ServletResponse response, String relativePath, JspWriter out, boolean flush)
Perform a RequestDispatcher.include() operation, with optional flushing of the response beforehand.
static void
introspect(Object bean, ServletRequest request)
static void
introspecthelper(Object bean, String prop, String value, ServletRequest request, String param, boolean ignoreMethodNF)
static String
toString(Object o)
static String
toString(boolean b)
static String
toString(byte b)
static String
toString(char c)
static String
toString(double d)
static String
toString(float f)
static String
toString(int i)
static String
toString(long l)
static String
toString(short s)

Method Details

URLEncode

public static String URLEncode(String s,
                               String enc)
URL encodes a string, based on the supplied character encoding. This performs the same function as java.next.URLEncode.encode in J2SDK1.4, and should be removed if the only platform supported is 1.4 or higher.
Parameters:
s - The String to be URL encoded.
enc - The character encoding
Returns:
The URL encoded String

coerce

public static Object coerce(String s,
                            Class target)

coerceToBoolean

public static boolean coerceToBoolean(String s)

coerceToByte

public static byte coerceToByte(String s)

coerceToChar

public static char coerceToChar(String s)

coerceToDouble

public static double coerceToDouble(String s)

coerceToFloat

public static float coerceToFloat(String s)

coerceToInt

public static int coerceToInt(String s)

coerceToLong

public static long coerceToLong(String s)

coerceToShort

public static short coerceToShort(String s)

convert

public static Object convert(String propertyName,
                             String s,
                             Class t,
                             Class propertyEditorClass)
            throws JasperException

createTypedArray

public static void createTypedArray(String propertyName,
                                    Object bean,
                                    Method method,
                                    String[] values,
                                    Class t,
                                    Class propertyEditorClass)
            throws JasperException
Create a typed array. This is a special case where params are passed through the request and the property is indexed.

decode

public static String decode(String encoded)
Decode an URL formatted string.
Parameters:
encoded - The string to decode.
Returns:
The decoded string.

escapeQueryString

public static String escapeQueryString(String unescString)
Escape special shell characters.
Parameters:
unescString - The string to shell-escape
Returns:
The escaped shell string.

getContextRelativePath

public static String getContextRelativePath(ServletRequest request,
                                            String relativePath)
Convert a possibly relative resource path into a context-relative resource path that starts with a '/'.
Parameters:
request - The servlet request we are processing
relativePath - The possibly relative resource path

getReadMethod

public static Method getReadMethod(Class beanClass,
                                   String prop)
            throws JasperException

getThrowable

public static Throwable getThrowable(ServletRequest request)
Returns the value of the javax.servlet.error.exception request attribute value, if present, otherwise the value of the javax.servlet.jsp.jspException request attribute value. This method is called at the beginning of the generated servlet code for a JSP error page, when the "exception" implicit scripting language variable is initialized.

getValueFromBeanInfoPropertyEditor

public static Object getValueFromBeanInfoPropertyEditor(Class attrClass,
                                                        String attrName,
                                                        String attrValue,
                                                        Class propertyEditorClass)
            throws JasperException

getValueFromPropertyEditorManager

public static Object getValueFromPropertyEditorManager(Class attrClass,
                                                       String attrName,
                                                       String attrValue)
            throws JasperException

getWriteMethod

public static Method getWriteMethod(Class beanClass,
                                    String prop)
            throws JasperException

handleGetProperty

public static Object handleGetProperty(Object o,
                                       String prop)
            throws JasperException

handleSetProperty

public static void handleSetProperty(Object bean,
                                     String prop,
                                     Object value)
            throws JasperException

handleSetProperty

public static void handleSetProperty(Object bean,
                                     String prop,
                                     boolean value)
            throws JasperException

handleSetProperty

public static void handleSetProperty(Object bean,
                                     String prop,
                                     byte value)
            throws JasperException

handleSetProperty

public static void handleSetProperty(Object bean,
                                     String prop,
                                     char value)
            throws JasperException

handleSetProperty

public static void handleSetProperty(Object bean,
                                     String prop,
                                     double value)
            throws JasperException

handleSetProperty

public static void handleSetProperty(Object bean,
                                     String prop,
                                     float value)
            throws JasperException

handleSetProperty

public static void handleSetProperty(Object bean,
                                     String prop,
                                     int value)
            throws JasperException

handleSetProperty

public static void handleSetProperty(Object bean,
                                     String prop,
                                     long value)
            throws JasperException

handleSetProperty

public static void handleSetProperty(Object bean,
                                     String prop,
                                     short value)
            throws JasperException

handleSetPropertyExpression

public static void handleSetPropertyExpression(Object bean,
                                               String prop,
                                               String expression,
                                               PageContext pageContext,
                                               ProtectedFunctionMapper functionMapper)
            throws JasperException
Use proprietaryEvaluate public static void handleSetPropertyExpression(Object bean, String prop, String expression, PageContext pageContext, VariableResolver variableResolver, FunctionMapper functionMapper ) throws JasperException { try { Method method = getWriteMethod(bean.getClass(), prop); method.invoke(bean, new Object[] { pageContext.getExpressionEvaluator().evaluate( expression, method.getParameterTypes()[0], variableResolver, functionMapper, null ) }); } catch (Exception ex) { throw new JasperException(ex); } }

include

public static void include(ServletRequest request,
                           ServletResponse response,
                           String relativePath,
                           JspWriter out,
                           boolean flush)
            throws IOException,
                   ServletException
Perform a RequestDispatcher.include() operation, with optional flushing of the response beforehand.
Parameters:
request - The servlet request we are processing
response - The servlet response we are processing
relativePath - The relative path of the resource to be included
out - The Writer to whom we are currently writing
flush - Should we flush before the include is processed?

introspect

public static void introspect(Object bean,
                              ServletRequest request)
            throws JasperException

introspecthelper

public static void introspecthelper(Object bean,
                                    String prop,
                                    String value,
                                    ServletRequest request,
                                    String param,
                                    boolean ignoreMethodNF)
            throws JasperException

toString

public static String toString(Object o)

toString

public static String toString(boolean b)

toString

public static String toString(byte b)

toString

public static String toString(char c)

toString

public static String toString(double d)

toString

public static String toString(float f)

toString

public static String toString(int i)

toString

public static String toString(long l)

toString

public static String toString(short s)

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