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## org.w3c.jigsaw.filters
Class HeaderFilter

    java.lang.Object
      |
      +--org.w3c.tools.resources.AttributeHolder
            |
            +--org.w3c.tools.resources.Resource
                  |
                  +--org.w3c.tools.resources.FramedResource
                        |
                        +--org.w3c.tools.resources.ResourceFrame
                              |
                              +--org.w3c.tools.resources.ResourceFilter
                                    |
                                    +--org.w3c.jigsaw.filters.HeaderFilter

public class HeaderFilter
extends ResourceFilter

Enforces a specific header value on all replies. Usefull for testing.

Field Summary
`protected static int` | `ATTR_CONNECTION` Attribute index - Should we use connection on that header.
`protected static int` | `ATTR_HEADER_NAME` Attribute index - The header name to add to replies.
`protected static int` | `ATTR_HEADER_VALUE` Attribute index - The header value.
`protected static int` | `ATTR_NOCACHE` Attribute index - SHould we use no-cache on that header.

Fields inherited from class org.w3c.tools.resources.ResourceFrame
`filterClass, frameListener, resource`

Fields inherited from class org.w3c.tools.resources.FramedResource
`ATTR_OID, attrListener, debugEvent, event_disabled, framesRef, structListener`

Fields inherited from class org.w3c.tools.resources.Resource
`ATTR_CONTEXT, ATTR_HELP_URL, ATTR_IDENTIFIER, ATTR_LAST_MODIFIED, ATTR_PARENT, ATTR_RESOURCE_FRAMES, ATTR_STORE_ENTRY, ATTR_URL`

Fields inherited from class org.w3c.tools.resources.AttributeHolder
`attributes, values`

Constructor Summary
`HeaderFilter()`

Method Summary
`boolean` | `checkConnection()` Should we add this header to the connection header.
`boolean` | `checkNoCache()` Should we add this header's name to the `no-cache` directive.
`java.lang.String` | `getHeaderName()` Get the header to set, if any.
`java.lang.String` | `getHeaderValue()` Get the header value to set, if any.
`ReplyInterface` | `ingoingFilter(RequestInterface request)`
`ReplyInterface` | `outgoingFilter(RequestInterface req, ReplyInterface rep)` The outgoing filter decorates the reply appropriately.

Methods inherited from class org.w3c.tools.resources.ResourceFilter
`exceptionFilter, getTargetResource, ingoingFilter, lookup, outgoingFilter, outputFilter`

Methods inherited from class org.w3c.tools.resources.ResourceFrame
`addFrameEventListener, attributeChanged, checkRequest, eventDisabled, fireFrameEvent, frameModified, getFilters, getFilters, getFrameReference, getResource, getResourceReference, getSpaceEntry, getURLPath, lookupFilters, lookupFrames, perform, postFrameEvent, processEvent, registerResource, removeFrameEventListener, setValue, unregisterResource, updateDefaultChildAttributes`

Methods inherited from class org.w3c.tools.resources.FramedResource
`addAttributeChangedListener, addStructureChangedListener, collectFramesReference, delete, disableEvent, displayEvent, enableEvent, fireAttributeChangeEvent, fireStructureChangedEvent, fireStructureChangedEvent, frameAdded, frameRemoved, getClone, getFrame, getFrame, getFrameReference, getFrameReference, getFramesReference, getOid, initialize, markModified, notifyUnload, performFrames, postAttributeChangeEvent, postEvent, postStructureChangedEvent, postStructureChangedEvent, registerFrame, registerFrameIfNone, removeAttributeChangedListener, removeStructureChangedListener, unregisterFrame`

Methods inherited from class org.w3c.tools.resources.Resource
`acceptUnload, checkMultipleLock, collectFrames, getContext, getFrame, getFrames, getHelpURL, getHelpURL, getIdentifier, getLastModified, getParent, getServer, getSpace, getStoreEntry, getValue, getValue, isInitialized, isUnloaded, setContext, setContext, setValue, updateAttributes`

Methods inherited from class org.w3c.tools.resources.AttributeHolder
`definesAttribute, definesAttribute, getAttributes, getBoolean, getChar, getClone, getClone, getDouble, getFloat, getInt, getLong, getString, getValue, initialize, lookupAttribute, pickleValues, print, setBoolean, setChar, setDouble, setFloat, setInt, setLong, setString, setValue`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

### ATTR_HEADER_NAME

    protected static int ATTR_HEADER_NAME

  Attribute index - The header name to add to replies.

### ATTR_HEADER_VALUE

    protected static int ATTR_HEADER_VALUE

  Attribute index - The header value.

### ATTR_NOCACHE

    protected static int ATTR_NOCACHE

  Attribute index - SHould we use no-cache on that header.

### ATTR_CONNECTION

    protected static int ATTR_CONNECTION

  Attribute index - Should we use connection on that header.

Constructor Detail

### HeaderFilter

    public HeaderFilter()

Method Detail

### getHeaderName

    public java.lang.String getHeaderName()

  Get the header to set, if any.
  Returns:
    A String encoded header name, or null.

### getHeaderValue

    public java.lang.String getHeaderValue()

  Get the header value to set, if any.
  Returns:
    A String encoded value for the header to set, or null.

### checkNoCache

    public boolean checkNoCache()

  Should we add this header's name to the `no-cache` directive.
  Returns:
    A boolean.

### checkConnection

    public boolean checkConnection()

  Should we add this header to the connection header.
  Returns:
    A boolean.

### ingoingFilter

    public ReplyInterface ingoingFilter(RequestInterface request)
                                 throws ProtocolException

  Returns:
    A Reply instance, if the filter did know how to answer the request without further processing, null otherwise.
  Throws:
    ProtocolException - If processing should be interrupted, because an abnormal situation occured.
  Overrides:
    ingoingFilter in class ResourceFilter

### outgoingFilter

    public ReplyInterface outgoingFilter(RequestInterface req,
                                         ReplyInterface rep)
                                  throws ProtocolException

  The outgoing filter decorates the reply appropriately.
  Parameters:
    `request` - The original request.
    `reply` - The originial reply.
  Returns:
    Always null.
  Throws:
    ProtocolException - If processing should be interrupted, because an abnormal situation occured.
  Overrides:
    outgoingFilter in class ResourceFilter

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