Mapper (Apache Tomcat 8.5.20 API Documentation)

org.apache.catalina.mapper

## Class Mapper

- java.lang.Object
- - org.apache.catalina.mapper.Mapper

-     public final class Mapper
      extends Object

  Mapper, which implements the servlet API mapping rules (which are derived from the HTTP rules).
  Author:
    Remy Maucherat

- - ### Nested Class Summary

    Nested Classes
    Modifier and Type | Class and Description
    --- | ---
    `protected static class` | `Mapper.ContextList`
    `protected static class` | `Mapper.ContextVersion`
    `protected static class` | `Mapper.MapElement<T>`
    `protected static class` | `Mapper.MappedContext`
    `protected static class` | `Mapper.MappedHost`
    `protected static class` | `Mapper.MappedWrapper`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `Mapper()`

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `addContextVersion(String hostName, Host host, String path, String version, Context context, String[] welcomeResources, WebResourceRoot resources, Collection<WrapperMappingInfo> wrappers)` Add a new Context to an existing Host.
    `void` | `addHost(String name, String[] aliases, Host host)` Add a new host to the mapper.
    `void` | `addHostAlias(String name, String alias)` Add an alias to an existing host.
    `void` | `addWelcomeFile(String hostName, String contextPath, String version, String welcomeFile)` Add a welcome file to the given context.
    `protected void` | `addWrapper(Mapper.ContextVersion context, String path, Wrapper wrapper, boolean jspWildCard, boolean resourceOnly)` Adds a wrapper to the given context.
    `void` | `addWrapper(String hostName, String contextPath, String version, String path, Wrapper wrapper, boolean jspWildCard, boolean resourceOnly)`
    `void` | `addWrappers(String hostName, String contextPath, String version, Collection<WrapperMappingInfo> wrappers)`
    `void` | `clearWelcomeFiles(String hostName, String contextPath, String version)` Clear the welcome files for the given context.
    `void` | `map(Context context, MessageBytes uri, MappingData mappingData)` Map the specified URI relative to the context, mutating the given mapping data.
    `void` | `map(MessageBytes host, MessageBytes uri, String version, MappingData mappingData)` Map the specified host name and URI, mutating the given mapping data.
    `void` | `pauseContextVersion(Context ctxt, String hostName, String contextPath, String version)` Mark a context as being reloaded.
    `void` | `removeContextVersion(Context ctxt, String hostName, String path, String version)` Remove a context from an existing host.
    `void` | `removeHost(String name)` Remove a host from the mapper.
    `void` | `removeHostAlias(String alias)` Remove a host alias
    `void` | `removeWelcomeFile(String hostName, String contextPath, String version, String welcomeFile)` Remove a welcome file from the given context.
    `protected void` | `removeWrapper(Mapper.ContextVersion context, String path)`
    `void` | `removeWrapper(String hostName, String contextPath, String version, String path)` Remove a wrapper from an existing context.
    `void` | `setDefaultHostName(String defaultHostName)` Set default host.

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

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

- - ### Constructor Detail

    - #### Mapper

          public Mapper()

  - ### Method Detail

    - #### setDefaultHostName

          public void setDefaultHostName(String defaultHostName)

      Set default host.
      Parameters:
        `defaultHostName` - Default host name

    - #### addHost

          public void addHost(String name,
                     String[] aliases,
                     Host host)

      Add a new host to the mapper.
      Parameters:
        `name` - Virtual host name
        `aliases` - Alias names for the virtual host
        `host` - Host object

    - #### removeHost

          public void removeHost(String name)

      Remove a host from the mapper.
      Parameters:
        `name` - Virtual host name

    - #### addHostAlias

          public void addHostAlias(String name,
                          String alias)

      Add an alias to an existing host.
      Parameters:
        `name` - The name of the host
        `alias` - The alias to add

    - #### removeHostAlias

          public void removeHostAlias(String alias)

      Remove a host alias
      Parameters:
        `alias` - The alias to remove

    - #### addContextVersion

          public void addContextVersion(String hostName,
                               Host host,
                               String path,
                               String version,
                               Context context,
                               String[] welcomeResources,
                               WebResourceRoot resources,
                               Collection<WrapperMappingInfo> wrappers)

      Add a new Context to an existing Host.
      Parameters:
        `hostName` - Virtual host name this context belongs to
        `host` - Host object
        `path` - Context path
        `version` - Context version
        `context` - Context object
        `welcomeResources` - Welcome files defined for this context
        `resources` - Static resources of the context
        `wrappers` - Information on wrapper mappings

    - #### removeContextVersion

          public void removeContextVersion(Context ctxt,
                                  String hostName,
                                  String path,
                                  String version)

      Remove a context from an existing host.
      Parameters:
        `ctxt` - The actual context
        `hostName` - Virtual host name this context belongs to
        `path` - Context path
        `version` - Context version

    - #### pauseContextVersion

          public void pauseContextVersion(Context ctxt,
                                 String hostName,
                                 String contextPath,
                                 String version)

      Mark a context as being reloaded. Reversion of this state is performed by calling `addContextVersion(...)` when context starts up.
      Parameters:
        `ctxt` - The actual context
        `hostName` - Virtual host name this context belongs to
        `contextPath` - Context path
        `version` - Context version

    - #### addWrapper

          public void addWrapper(String hostName,
                        String contextPath,
                        String version,
                        String path,
                        Wrapper wrapper,
                        boolean jspWildCard,
                        boolean resourceOnly)

    - #### addWrappers

          public void addWrappers(String hostName,
                         String contextPath,
                         String version,
                         Collection<WrapperMappingInfo> wrappers)

    - #### addWrapper

          protected void addWrapper(Mapper.ContextVersion context,
                        String path,
                        Wrapper wrapper,
                        boolean jspWildCard,
                        boolean resourceOnly)

      Adds a wrapper to the given context.
      Parameters:
        `context` - The context to which to add the wrapper
        `path` - Wrapper mapping
        `wrapper` - The Wrapper object
        `jspWildCard` - true if the wrapper corresponds to the JspServlet and the mapping path contains a wildcard; false otherwise
        `resourceOnly` - true if this wrapper always expects a physical resource to be present (such as a JSP)

    - #### removeWrapper

          public void removeWrapper(String hostName,
                           String contextPath,
                           String version,
                           String path)

      Remove a wrapper from an existing context.
      Parameters:
        `hostName` - Virtual host name this wrapper belongs to
        `contextPath` - Context path this wrapper belongs to
        `version` - Context version this wrapper belongs to
        `path` - Wrapper mapping

    - #### removeWrapper

          protected void removeWrapper(Mapper.ContextVersion context,
                           String path)

    - #### addWelcomeFile

          public void addWelcomeFile(String hostName,
                            String contextPath,
                            String version,
                            String welcomeFile)

      Add a welcome file to the given context.
      Parameters:
        `hostName` - The host where the given context can be found
        `contextPath` - The path of the given context
        `version` - The version of the given context
        `welcomeFile` - The welcome file to add

    - #### removeWelcomeFile

          public void removeWelcomeFile(String hostName,
                               String contextPath,
                               String version,
                               String welcomeFile)

      Remove a welcome file from the given context.
      Parameters:
        `hostName` - The host where the given context can be found
        `contextPath` - The path of the given context
        `version` - The version of the given context
        `welcomeFile` - The welcome file to remove

    - #### clearWelcomeFiles

          public void clearWelcomeFiles(String hostName,
                               String contextPath,
                               String version)

      Clear the welcome files for the given context.
      Parameters:
        `hostName` - The host where the context to be cleared can be found
        `contextPath` - The path of the context to be cleared
        `version` - The version of the context to be cleared

    - #### map

          public void map(MessageBytes host,
                 MessageBytes uri,
                 String version,
                 MappingData mappingData)
                   throws IOException

      Map the specified host name and URI, mutating the given mapping data.
      Parameters:
        `host` - Virtual host name
        `uri` - URI
        `version` - The version, if any, included in the request to be mapped
        `mappingData` - This structure will contain the result of the mapping operation
      Throws:
        `IOException` - if the buffers are too small to hold the results of the mapping.

    - #### map

          public void map(Context context,
                 MessageBytes uri,
                 MappingData mappingData)
                   throws IOException

      Map the specified URI relative to the context, mutating the given mapping data.
      Parameters:
        `context` - The actual context
        `uri` - URI
        `mappingData` - This structure will contain the result of the mapping operation
      Throws:
        `IOException` - if the buffers are too small to hold the results of the mapping.

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