org.apache.turbine.services.velocity

## Interface VelocityService

- All Superinterfaces:
    Initable, Service
  All Known Implementing Classes:
    TurbineVelocityService

      public interface VelocityService
      extends Service

  Implementations of the VelocityService interface.
  Version:
    $Id: VelocityService.java 1773378 2016-12-09 13:19:59Z tv $
  Author:
    John D. McNally, Dave Bryson, Jason van Zyl, Henning P. Schmiedehausen, Peter Courcoux

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `static boolean` | `CATCH_ERRORS_DEFAULT` Default: Yes
    `static String` | `CATCH_ERRORS_KEY` Shall we catch Velocity Errors and report them?
    `static String` | `CONTEXT` Key for storing the Context in the RunData object
    `static String` | `PIPELINEDATA_KEY` The Key for storing the PipelineData Object in the Context
    `static String` | `RUNDATA_KEY` The Key for storing the RunData Object in the Context
    `static String` | `SERVICE_NAME` The Service Name
    `static String` | `VELOCITY_EXTENSION` The default extension of Velocity Pages

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `org.apache.velocity.context.Context` | `getContext()` Create an empty WebContext object.
    `org.apache.velocity.context.Context` | `getContext(PipelineData pipelineData)` Create a Context from the PipelineData object.
    `org.apache.velocity.context.Context` | `getNewContext()` This method returns a new, empty Context object.
    `String` | `handleRequest(org.apache.velocity.context.Context context, String template)` Process the request and fill in the template with the values you set in the Context.
    `void` | `handleRequest(org.apache.velocity.context.Context context, String filename, OutputStream out)` Process the request and fill in the template with the values you set in the Context.
    `void` | `handleRequest(org.apache.velocity.context.Context context, String filename, Writer writer)` Process the request and fill in the template with the values you set in the Context.
    `void` | `requestFinished(org.apache.velocity.context.Context context)` Performs post-request actions (releases context tools back to the object pool).

    - ### Methods inherited from interface org.apache.turbine.services.Service

      `getConfiguration, getName, getProperties, setName, setServiceBroker`

    - ### Methods inherited from interface org.apache.turbine.services.Initable

      `getInit, init, init, setInitableBroker, shutdown`

- - ### Field Detail

    - #### SERVICE_NAME

          static final String SERVICE_NAME

      The Service Name
      See Also:
        Constant Field Values

    - #### CONTEXT

          static final String CONTEXT

      Key for storing the Context in the RunData object
      See Also:
        Constant Field Values

    - #### VELOCITY_EXTENSION

          static final String VELOCITY_EXTENSION

      The default extension of Velocity Pages
      See Also:
        Constant Field Values

    - #### RUNDATA_KEY

          static final String RUNDATA_KEY

      The Key for storing the RunData Object in the Context
      See Also:
        Constant Field Values

    - #### PIPELINEDATA_KEY

          static final String PIPELINEDATA_KEY

      The Key for storing the PipelineData Object in the Context
      See Also:
        Constant Field Values

    - #### CATCH_ERRORS_KEY

          static final String CATCH_ERRORS_KEY

      Shall we catch Velocity Errors and report them?
      See Also:
        Constant Field Values

    - #### CATCH_ERRORS_DEFAULT

          static final boolean CATCH_ERRORS_DEFAULT

      Default: Yes
      See Also:
        Constant Field Values

  - ### Method Detail

    - #### handleRequest

          String handleRequest(org.apache.velocity.context.Context context,
                             String template)
                               throws Exception

      Process the request and fill in the template with the values you set in the Context.
      Parameters:
        `context` - A Context.
        `template` - A String with the filename of the template.
      Returns:
        The process template as a String.
      Throws:
        `Exception` - a generic exception.

    - #### handleRequest

          void handleRequest(org.apache.velocity.context.Context context,
                           String filename,
                           OutputStream out)
                             throws TurbineException

      Process the request and fill in the template with the values you set in the Context.
      Parameters:
        `context` - A Context.
        `filename` - A String with the filename of the template.
        `out` - A OutputStream where we will write the process template as a String.
      Throws:
        `TurbineException` - Any exception thrown while processing will be wrapped into a TurbineException and rethrown.

    - #### handleRequest

          void handleRequest(org.apache.velocity.context.Context context,
                           String filename,
                           Writer writer)
                             throws TurbineException

      Process the request and fill in the template with the values you set in the Context.
      Parameters:
        `context` - A Context.
        `filename` - A String with the filename of the template.
        `writer` - A Writer where we will write the process template as a String.
      Throws:
        `TurbineException` - Any exception thrown while processing will be wrapped into a TurbineException and rethrown.

    - #### getContext

          org.apache.velocity.context.Context getContext()

      Create an empty WebContext object.
      Returns:
        An empty WebContext object.

    - #### getNewContext

          org.apache.velocity.context.Context getNewContext()

      This method returns a new, empty Context object.
      Returns:
        A WebContext.

    - #### getContext

          org.apache.velocity.context.Context getContext(PipelineData pipelineData)

      Create a Context from the PipelineData object. Adds a pointer to the PipelineData object to the Context so that PipelineData is available in the templates.
      Parameters:
        `pipelineData` - The Turbine PipelineData object.
      Returns:
        A clone of the Context needed by Velocity.

    - #### requestFinished

          void requestFinished(org.apache.velocity.context.Context context)

      Performs post-request actions (releases context tools back to the object pool).
      Parameters:
        `context` - a Velocity Context

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