Class JspRuntimeLibrary

java.lang.Object
org.apache.jasper.runtime.JspRuntimeLibrary

public class JspRuntimeLibrary extends 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
Author:
Mandar Raje, Shawn Bayern
  • Constructor Details

    • JspRuntimeLibrary

      public JspRuntimeLibrary()
  • Method Details

    • 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.
      Parameters:
      request - The Servlet request
      Returns:
      the throwable in the error attribute if any
    • 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)
    • coerceToShort

      public static short coerceToShort(String s)
    • coerceToLong

      public static long coerceToLong(String s)
    • coerce

      public static Object coerce(String s, Class<?> target)
    • convert

      public static Object convert(String propertyName, String s, Class<?> t, Class<?> propertyEditorClass) throws JasperException
      Throws:
      JasperException
    • introspect

      public static void introspect(Object bean, ServletRequest request) throws JasperException
      Throws:
      JasperException
    • introspecthelper

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

      public static String toString(Object o)
    • toString

      public static String toString(byte b)
    • toString

      public static String toString(boolean b)
    • toString

      public static String toString(short s)
    • toString

      public static String toString(int i)
    • toString

      public static String toString(float f)
    • toString

      public static String toString(long l)
    • toString

      public static String toString(double d)
    • toString

      public static String toString(char c)
    • 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.
      Parameters:
      propertyName - The property name
      bean - The bean
      method - The method
      values - Array values
      t - The class
      propertyEditorClass - The editor for the property
      Throws:
      JasperException - An error occurred
    • escapeQueryString

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

      public static Object handleGetProperty(Object o, String prop) throws JasperException
      Throws:
      JasperException
    • handleSetPropertyExpression

      public static void handleSetPropertyExpression(Object bean, String prop, String expression, PageContext pageContext, ProtectedFunctionMapper functionMapper) throws JasperException
      Throws:
      JasperException
    • handleSetProperty

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

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

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

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

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

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

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

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

      public static void handleSetProperty(Object bean, String prop, boolean value) throws JasperException
      Throws:
      JasperException
    • getWriteMethod

      public static Method getWriteMethod(Class<?> beanClass, String prop) throws JasperException
      Throws:
      JasperException
    • getReadMethod

      public static Method getReadMethod(Class<?> beanClass, String prop) throws JasperException
      Throws:
      JasperException
    • getValueFromBeanInfoPropertyEditor

      public static Object getValueFromBeanInfoPropertyEditor(Class<?> attrClass, String attrName, String attrValue, Class<?> propertyEditorClass) throws JasperException
      Throws:
      JasperException
    • getValueFromPropertyEditorManager

      public static Object getValueFromPropertyEditorManager(Class<?> attrClass, String attrName, String attrValue) throws JasperException
      Throws:
      JasperException
    • 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
      Returns:
      an absolute path
    • 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?
      Throws:
      IOException - if thrown by the included servlet
      ServletException - if thrown by the included servlet
    • 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
    • startBufferedBody

      public static JspWriter startBufferedBody(PageContext pageContext, BodyTag tag) throws JspException
      Throws:
      JspException
    • releaseTag

      public static void releaseTag(Tag tag, InstanceManager instanceManager, boolean reused)
    • releaseTag

      protected static void releaseTag(Tag tag, InstanceManager instanceManager)