BasicHandler (Apache Axis)

java.lang.Object
- org.apache.axis.handlers.BasicHandler

All Implemented Interfaces:

Serializable, Handler

Direct Known Subclasses:

AxisEngine, BasicProvider, CommonsHTTPSender, DebugHandler, EchoHandler, ErrorHandler, FaultableHandler, HTTPActionHandler, HTTPAuthHandler, HTTPSender, JavaNetHTTPSender, JavaSender, JAXRPCHandler, JMSSender, JWSHandler, LocalResponder, LocalSender, LogHandler, LogMessage, MailSender, MD5AttachHandler, MustUnderstandChecker, QuitHandler, SimpleAuthenticationHandler, SimpleAuthorizationHandler, SimpleChain, SimpleSessionHandler, SOAPMonitorHandler, URLMapper
```
public abstract class BasicHandler
extends Object
implements Handler
```
BasicHandler is a utility class which implements simple property setting/getting behavior, and stubs out a lot of the Handler methods. Extend this class to make writing your Handlers easier, and then override what you need to.

Author:

Glen Daniels (gdaniels@allaire.com), Doug Davis (dug@us.ibm.com

See Also:
Serialized Form

Field Summary

Fields
Modifier and Type Field and Description

protected boolean makeLockable

protected String name

protected Hashtable options

Fields
Modifier and Type	Field and Description
`protected boolean`	`makeLockable`
`protected String`	`name`
`protected Hashtable`	`options`

Constructor Summary

Constructors
Constructor and Description

BasicHandler()

Constructors
Constructor and Description
`BasicHandler()`

Method Summary

Methods
Modifier and Type	Method and Description
`boolean`	`canHandleBlock(QName qname)` Indicate if this handler can process `qname`.
`void`	`cleanup()` Cleanup is called when the chain containing this Handler object is done processing the chain.
`void`	`generateWSDL(MessageContext msgContext)` Obtain WSDL information.
`Element`	`getDeploymentData(Document doc)` This will return the root element of an XML doc that describes the deployment information about this handler.
`String`	`getName()` Return the name (i.e. registry key) for this Handler
`Object`	`getOption(String name)` Returns the option corresponding to the 'name' given
`Hashtable`	`getOptions()` Return the entire list of options
`List`	`getUnderstoodHeaders()` Return a list of QNames which this Handler understands.
`void`	`init()` Stubbed-out methods.
`protected void`	`initHashtable()`
`void`	`onFault(MessageContext msgContext)` Called when a subsequent handler throws a fault.
`void`	`setName(String name)` Set the name (i.e. registry key) of this Handler
`void`	`setOption(String name, Object value)` Set the given option (name/value) in this handler's bag of options
`boolean`	`setOptionDefault(String name, Object value)` Set a default value for the given option: if the option is not already set, then set it.
`void`	`setOptions(Hashtable opts)` Sets a whole list of options.
`protected void`	`setOptionsLockable(boolean makeLockable)` Should this Handler use a LockableHashtable for options?

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

Methods inherited from interface org.apache.axis.Handler
invoke

- Field Detail
  - makeLockable
```
protected boolean makeLockable
```
  - options
```
protected Hashtable options
```
  - name
```
protected String name
```
- Constructor Detail
  - BasicHandler
```
public BasicHandler()
```
- Method Detail
  - setOptionsLockable
```
protected void setOptionsLockable(boolean makeLockable)
```
    Should this Handler use a LockableHashtable for options? Default is 'false'.
  - initHashtable
```
protected void initHashtable()
```
  - init
```
public void init()
```
    Stubbed-out methods. Override in your child class to implement any real behavior. Note that there is NOT a stub for invoke(), since we require any Handler derivative to implement that.
    
    Specified by:
    
    init in interface Handler
  - cleanup
```
public void cleanup()
```
    Description copied from interface: Handler
    
    Cleanup is called when the chain containing this Handler object is done processing the chain.
    
    Specified by:
    
    cleanup in interface Handler
  - canHandleBlock
```
public boolean canHandleBlock(QName qname)
```
    Description copied from interface: Handler
    
    Indicate if this handler can process qname.
    
    Specified by:
    
    canHandleBlock in interface Handler
    
    Parameters:
    qname - the QName to check
    
    Returns:
    true if this Handler can handle qname, false otherwise
  onFault public void onFault(MessageContext msgContext) Description copied from interface: Handler Called when a subsequent handler throws a fault. Specified by: onFault in interface Handler Parameters: msgContext - the MessageContext to process the fault to setOption public void setOption(String name, Object value) Set the given option (name/value) in this handler's bag of options Specified by: setOption in interface Handler Parameters: name - the name of the option value - the new value of the option setOptionDefault public boolean setOptionDefault(String name, Object value) Set a default value for the given option: if the option is not already set, then set it. if the option is already set, then do not set it. If this is called multiple times, the first with a non-null value if 'value' will set the default, remaining calls will be ignored. Returns true if value set (by this call), otherwise false; getOption public Object getOption(String name) Returns the option corresponding to the 'name' given Specified by: getOption in interface Handler Parameters: name - the name of the option Returns: the value of the option getOptions public Hashtable getOptions() Return the entire list of options Specified by: getOptions in interface Handler Returns: a Hashset containing all name/value pairs setOptions public void setOptions(Hashtable opts) Description copied from interface: Handler Sets a whole list of options. Specified by: setOptions in interface Handler Parameters: opts - a Hashtable of name-value pairs to use setName public void setName(String name) Set the name (i.e. registry key) of this Handler Specified by: setName in interface Handler Parameters: name - the new name getName public String getName() Return the name (i.e. registry key) for this Handler Specified by: getName in interface Handler Returns: the name for this Handler getDeploymentData public Element getDeploymentData(Document doc) Description copied from interface: Handler This will return the root element of an XML doc that describes the deployment information about this handler. This is NOT the WSDL, this is all of the static internal data use by Axis - WSDL takes into account run-time information (like which service we're talking about) this is just the data that's stored in the registry. Used by the 'list' Admin function. Specified by: getDeploymentData in interface Handler Parameters: doc - a Document within which to build the deployment data Returns: an Element representing the deployment data generateWSDL public void generateWSDL(MessageContext msgContext) throws AxisFault Description copied from interface: Handler Obtain WSDL information. Some Handlers will implement this by merely setting properties in the MessageContext, others (providers) will take responsibility for doing the "real work" of generating WSDL for a given service. Specified by: generateWSDL in interface Handler Parameters: msgContext - the MessageContext to generate the WSDL to Throws: AxisFault - if there was a problem generating the WSDL getUnderstoodHeaders public List getUnderstoodHeaders() Return a list of QNames which this Handler understands. By returning a particular QName here, we are committing to fulfilling any contracts defined in the specification of the SOAP header with that QName. Specified by: getUnderstoodHeaders in interface Handler Returns: a List of QName instances

Class BasicHandler

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from interface org.apache.axis.Handler

Field Detail

makeLockable

options

name

Constructor Detail

BasicHandler

Method Detail

setOptionsLockable

initHashtable

init

cleanup

canHandleBlock

onFault

setOption

setOptionDefault

getOption

getOptions

setOptions

setName

getName

getDeploymentData

generateWSDL

getUnderstoodHeaders