syntheticoperation
Class WriteOnlyAttributeHandler

java.lang.Object
  com.wrq.vhi.script.api.AttributeEventHandler
      syntheticoperation.WriteOnlyAttributeHandler

All Implemented Interfaces:

com.wrq.vhi.script.api.EventHandler

public class WriteOnlyAttributeHandler
extends com.wrq.vhi.script.api.AttributeEventHandler

Event handler that prevents reading from attributes, while pretending to do so.

The web applications generated by the Web Builder sometimes insist upon reading from attributes, even when they are never displayed. This event handler "pretends" to read the attribute, but only returns a single blank.

Field Summary

static java.lang.String	description
static int	readAttributeTimeout Timeout in seconds for the readAttribute() event.
static int	writeAttributeTimeout Timeout in seconds for the writeAttribute() event.

Fields inherited from interface com.wrq.vhi.script.api.EventHandler

DEFAULT_TIMEOUT

Constructor Summary

WriteOnlyAttributeHandler()

Method Summary

java.lang.String	readAttribute(com.wrq.vhi.script.api.ReadAttributeEvent event) Return a string containing a single blank when reading this attribute.
void	writeAttribute(com.wrq.vhi.script.api.WriteAttributeEvent event) Write new value to this attribute.

Methods inherited from class java.lang.Object

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

Field Detail

description

public static final java.lang.String description

See Also:

Constant Field Values

readAttributeTimeout

public static final int readAttributeTimeout

Timeout in seconds for the readAttribute() event. A value of DEFAULT_TIMEOUT means the event will use the model defined default event timeout.

See Also:

Constant Field Values

writeAttributeTimeout

public static final int writeAttributeTimeout

Timeout in seconds for the writeAttribute() event. A value of DEFAULT_TIMEOUT means the event will use the model defined default event timeout.

See Also:

Constant Field Values

Constructor Detail

WriteOnlyAttributeHandler

public WriteOnlyAttributeHandler()

Method Detail

readAttribute

public java.lang.String readAttribute(com.wrq.vhi.script.api.ReadAttributeEvent event)
                               throws com.wrq.apptrieve.agent.ApptrieveException

Return a string containing a single blank when reading this attribute.

Overrides:

readAttribute in class com.wrq.vhi.script.api.AttributeEventHandler

Parameters:

event - the event instance

Returns:

the attribute value

Throws:

com.wrq.apptrieve.agent.ApptrieveException

writeAttribute

public void writeAttribute(com.wrq.vhi.script.api.WriteAttributeEvent event)
                    throws com.wrq.apptrieve.agent.ApptrieveException

Write new value to this attribute.

Overrides:

writeAttribute in class com.wrq.vhi.script.api.AttributeEventHandler

Parameters:

event - the event instance

Throws:

com.wrq.apptrieve.agent.ApptrieveException