org.apache.catalina.ssi

## Class SSIServletExternalResolver

- java.lang.Object
- - org.apache.catalina.ssi.SSIServletExternalResolver

- All Implemented Interfaces:
    SSIExternalResolver

      public class SSIServletExternalResolver
      extends Object
      implements SSIExternalResolver

  An implementation of SSIExternalResolver that is used with servlets.
  Author:
    Dan Sandberg, David Becker

- - ### Nested Class Summary

    Nested Classes
    Modifier and Type | Class and Description
    --- | ---
    `protected static class` | `SSIServletExternalResolver.ServletContextAndPath`

  - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `protected ServletContext` | `context`
    `protected int` | `debug`
    `protected String` | `inputEncoding`
    `protected boolean` | `isVirtualWebappRelative`
    `protected HttpServletRequest` | `req`
    `protected HttpServletResponse` | `res`
    `protected String[]` | `VARIABLE_NAMES`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `SSIServletExternalResolver(ServletContext context, HttpServletRequest req, HttpServletResponse res, boolean isVirtualWebappRelative, int debug, String inputEncoding)`

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `addVariableNames(Collection<String> variableNames)` Adds any external variables to the variableNames collection.
    `protected String` | `getAbsolutePath(String path)`
    `protected String` | `getCGIVariable(String name)`
    `Date` | `getCurrentDate()` Returns the current date.
    `long` | `getFileLastModified(String path, boolean virtual)`
    `long` | `getFileSize(String path, boolean virtual)`
    `String` | `getFileText(String originalPath, boolean virtual)`
    `protected String` | `getPathWithoutContext(String contextPath, String servletPath)`
    `protected String` | `getPathWithoutFileName(String servletPath)`
    `protected Object` | `getReqAttributeIgnoreCase(String targetName)`
    `protected SSIServletExternalResolver.ServletContextAndPath` | `getServletContextAndPath(String originalPath, boolean virtual)`
    `protected SSIServletExternalResolver.ServletContextAndPath` | `getServletContextAndPathFromNonVirtualPath(String nonVirtualPath)`
    `protected SSIServletExternalResolver.ServletContextAndPath` | `getServletContextAndPathFromVirtualPath(String virtualPath)`
    `protected URLConnection` | `getURLConnection(String originalPath, boolean virtual)`
    `String` | `getVariableValue(String name)`
    `protected boolean` | `isNameReserved(String name)`
    `protected boolean` | `isRootContext(ServletContext servletContext)`
    `void` | `log(String message, Throwable throwable)`
    `protected String` | `nullToEmptyString(String string)`
    `void` | `setVariableValue(String name, String value)` Set the named variable to the specified value.

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Field Detail

    - #### VARIABLE_NAMES

          protected final String[] VARIABLE_NAMES

    - #### context

          protected final ServletContext context

    - #### req

          protected final HttpServletRequest req

    - #### res

          protected final HttpServletResponse res

    - #### isVirtualWebappRelative

          protected final boolean isVirtualWebappRelative

    - #### debug

          protected final int debug

    - #### inputEncoding

          protected final String inputEncoding

  - ### Constructor Detail

    - #### SSIServletExternalResolver

          public SSIServletExternalResolver(ServletContext context,
                                    HttpServletRequest req,
                                    HttpServletResponse res,
                                    boolean isVirtualWebappRelative,
                                    int debug,
                                    String inputEncoding)

  - ### Method Detail

    - #### log

          public void log(String message,
                 Throwable throwable)

      Specified by:
        `log` in interface `SSIExternalResolver`

    - #### addVariableNames

          public void addVariableNames(Collection<String> variableNames)

      Description copied from interface: `SSIExternalResolver`
      Adds any external variables to the variableNames collection.
      Specified by:
        `addVariableNames` in interface `SSIExternalResolver`
      Parameters:
        `variableNames` - the collection to add to

    - #### getReqAttributeIgnoreCase

          protected Object getReqAttributeIgnoreCase(String targetName)

    - #### isNameReserved

          protected boolean isNameReserved(String name)

    - #### setVariableValue

          public void setVariableValue(String name,
                              String value)

      Description copied from interface: `SSIExternalResolver`
      Set the named variable to the specified value. If value is null, then the variable will be removed ( ie. a call to getVariableValue will return null )
      Specified by:
        `setVariableValue` in interface `SSIExternalResolver`
      Parameters:
        `name` - of the variable
        `value` - of the variable

    - #### getVariableValue

          public String getVariableValue(String name)

      Specified by:
        `getVariableValue` in interface `SSIExternalResolver`

    - #### getCGIVariable

          protected String getCGIVariable(String name)

    - #### getCurrentDate

          public Date getCurrentDate()

      Description copied from interface: `SSIExternalResolver`
      Returns the current date. This is useful for putting the SSI stuff in a regression test. Since you can make the current date a constant, it makes testing easier since the output won't change.
      Specified by:
        `getCurrentDate` in interface `SSIExternalResolver`
      Returns:
        the data

    - #### nullToEmptyString

          protected String nullToEmptyString(String string)

    - #### getPathWithoutFileName

          protected String getPathWithoutFileName(String servletPath)

    - #### getPathWithoutContext

          protected String getPathWithoutContext(String contextPath,
                                     String servletPath)

    - #### getAbsolutePath

          protected String getAbsolutePath(String path)
                                    throws IOException

      Throws:
        `IOException`

    - #### getServletContextAndPathFromNonVirtualPath

          protected SSIServletExternalResolver.ServletContextAndPath getServletContextAndPathFromNonVirtualPath(String nonVirtualPath)
                                                                                                         throws IOException

      Throws:
        `IOException`

    - #### getServletContextAndPathFromVirtualPath

          protected SSIServletExternalResolver.ServletContextAndPath getServletContextAndPathFromVirtualPath(String virtualPath)
                                                                                                      throws IOException

      Throws:
        `IOException`

    - #### isRootContext

          protected boolean isRootContext(ServletContext servletContext)

    - #### getServletContextAndPath

          protected SSIServletExternalResolver.ServletContextAndPath getServletContextAndPath(String originalPath,
                                                                                  boolean virtual)
                                                                                       throws IOException

      Throws:
        `IOException`

    - #### getURLConnection

          protected URLConnection getURLConnection(String originalPath,
                                       boolean virtual)
                                            throws IOException

      Throws:
        `IOException`

    - #### getFileLastModified

          public long getFileLastModified(String path,
                                 boolean virtual)
                                   throws IOException

      Specified by:
        `getFileLastModified` in interface `SSIExternalResolver`
      Throws:
        `IOException`

    - #### getFileSize

          public long getFileSize(String path,
                         boolean virtual)
                           throws IOException

      Specified by:
        `getFileSize` in interface `SSIExternalResolver`
      Throws:
        `IOException`

    - #### getFileText

          public String getFileText(String originalPath,
                           boolean virtual)
                             throws IOException

      Specified by:
        `getFileText` in interface `SSIExternalResolver`
      Throws:
        `IOException`

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