Open topic with navigation

JIDLObject

Declaration

public class JIDLObject implements JIDLObjectI, java.io.Serializable

java.lang.Object

  |

  +--com.idl.javaidl.JIDLObject

All Implemented Interfaces:

JIDLObjectI, java.io.Serializable

Description

This class wraps an IDL object.

In many of the methods of this class, one or more flags are required to be specified for parameters being passed to or from the bridge. These flags follow the following guidelines:

For all types of parameters (subclasses of JIDLNumber, JIDLString, JIDLObject-I and JIDLArray), a flag should be set that determines whether the parameter is in-only (const) or in-out (we expect it to be changed by IDL). The constants that determine this are either JIDLConst.PARMFLAG_CONST or JIDLConst.PARMFLAG_IN_OUT.

For parameters that are arrays, a flag should be set that tells the bridge whether the array is to be convolved when passed to IDL. If the PARM_IN_OUT flag is set, this flag will also tell the bridge whether to convolve the array when it is copied back to Java. The constants that determine this are either JIDLConst.PARMFLAG_CONVMAJORITY or JIDLConst.PARMFLAG_NO_CONVMAJORITY.

For example, if the parameter in question is an array that is to be modified by IDL (in-out) and needs to be convolved when passed to and from IDL, we would set its argpal array member as follows:

   argpal[2] = JIDLConst.PARMFLAG_IN_OUT | JIDLConst.PARMFLAG_CONVMAJORITY;

Methods

abort()

public void abort()

Requests that the IDL process containing the underlying IDL object abort its current activity.

This is only a request and IDL may take a long time before it actually stops.

The client can only Abort the current IDL activity if that wrapper object is the current “owner” of the underlying IDL.

Specified By:

abort in interface JIDLObjectI

Throws:

JIDLException - If IDL encounters an error.

See Also:

JIDLAbortedException

addIDLNotifyListener(JIDLNotifyListener)

public void addIDLNotifyListener(com.idl.javaidl.JIDLNotifyListener listener)

Adds the specified IDL notify listener to receive IDL notification events on this object.

Note that registering/unregistering for events should happen in the init-Listeners method or AFTER the create-Object method.

Specified By:

addIDLNotifyListener in interface JIDLObjectI

Parameters:

listener - the listener

addIDLOutputListener(JIDLOutputListener)

public void addIDLOutputListener(com.idl.javaidl.JIDLOutputListener listener)

Adds the specified IDL output listener to receive IDL output events on this object.

Note that registering/unregistering for events should happen in the init-Listeners method or AFTER the create-Object method.

Specified By:

addIDLOutputListener in interface JIDLObjectI

Parameters:

listener - the listener

callFunction(String, int)

public java.lang.Object callFunction(java.lang.String sMethodName, int iPalFlag)

Call IDL function that accepts zero parameters.

Parameters:

sMethodName - the function name

iPalFlag - a flag determining whether a returned array if convolved or not. If the returned value is not an array, this value is zero. See class description for more information.

Returns:

an Object of type JIDLNumber, JIDLString, JIDLObject or JIDLArray. The caller must know the type of the Object being returned and cast it to its proper type. May also return null.

Throws:

JIDLException - If IDL encounters an error.

See Also:

JIDLObjectI.callFunction(String, int, Object[], int[], int)

callFunction(String, int, Object[], int[], int)

public java.lang.Object callFunction(java.lang.String sMethodName, int argc, java.lang.Object[] argv, int[] argpal, int iPalFlag)

Call IDL function.

The argpal parameter is an array of flags created by OR-ing constants from class JIDLConst. Each array element corresponds to the equivalent parameter in argv.

Specified By:

callFunction in interface JIDLObjectI

Parameters:

sMethodName - the procedure name

argc - the number of parameters

argv - array of Objects to be passed to IDL. This array should be of length argc and should contain objects of type JIDLNumber, JIDLObject, JIDLString or JIDLObject.

argpal - array of flags denoting whether each argv parameter passed to be bridge is 1) in-out vs constant; or 2) a convolved or non-convolved array This array should be of length argc.

iPalFlag - a flag determining whether a returned array if convolved or not. If the returned value is not an array, this value is zero.

Returns:

an Object of type JIDLNumber, JIDLString, JIDLObject-I or JIDLArray. The caller must know the type of the Object being returned and cast it to its proper type.

Throws:

JIDLException - If IDL encounters an error.

See Also:

JIDLNumber, JIDLObject, JIDLString, JIDLArray, JIDLConst.PARMFLAG_CONST, JIDLConst.PARMFLAG_IN_OUT, JIDLConst.PARMFLAG_CONVMAJORITY, JIDLConst.PARMFLAG_NO_CONVMAJORITY

callProcedure(String)

public void callProcedure(java.lang.String sMethodName)

Call IDL procedure that accepts zero parameters.

Parameters:

sMethodName - the procedure name

Throws:

JIDLException - If IDL encounters an error.

See Also:

callProcedure(String, int, Object[], int[])

callProcedure(String, int, Object[], int[])

public void callProcedure(java.lang.String sMethodName, int argc, java.lang.Object[] argv, int[] argpal)

Call IDL procedure.

The argpal parameter is an array of flags created by OR-ing constants from class JIDLConst. Each array element corresponds to the equivalent parameter in argv.

Specified By:

callProcedure in interface JIDLObjectI

Parameters:

sMethodName - the procedure name

argc - the number of parameters

argv - array of Objects to be passed to IDL. This array should be of length argc and should contain objects of type JIDLNumber, JIDLObject, JIDLString or JIDLObject.

argpal - array of flags denoting whether each argv parameter passed to be bridge is 1) in-out vs constant; or 2) a convolved or non-convolved array This array should be of length argc.

Throws:

JIDLException - If IDL encounters an error.

See Also:

JIDLNumber, JIDLObject, JIDLString, JIDLArray, JIDLConst.PARMFLAG_CONST, JIDLConst.PARMFLAG_IN_OUT, JIDLConst.PARMFLAG_CONVMAJORITY, JIDLConst.PARMFLAG_NO_CONVMAJORITY

createObject()

public void createObject()

Create the wrapped object by calling IDL’s ::INIT method.

Used for ::INIT methods that take zero parameters. Assumes a default JIDLProcessInitializer.

Throws:

JIDLException - If IDL encounters an error.

See Also:

createObject(int, Object[], int[])

createObject(int, Object[], int[])

public void createObject(int argc, java.lang.Object[] argv, int[] argpal)

Create the wrapped object by calling IDL’s ::INIT method.

The argc, argv, argpal parameters are used to supply parameters to the underlying IDL object’s ::Init method.

If the ::Init method does not have any parameters, the caller sets argc, argv, argpal to 0, null, null, respectively.

create-Object does the following:

• Calls ::Init method in the IDL object
• Calls the superclass init-Listeners method to initialize any event handlers. The init-Listeners method has default behavior, which is different for graphical and non-graphical objects. If the default behavior is not desired, a sub-class to modify the listener initialization may override the init-Listeners method.

Specified By:

createObject in interface JIDLObjectI

Parameters:

argc - the number of parameters to be passed to INIT

argv - array of Objects to be passed to IDL. This array should be of length argc and should contain objects of type JIDLNumber, JIDLObject, JIDLString or JIDLArray.

argpal - array of flags denoting whether each argv parameter that is of type array should be convolved or not. For parameters that are not arrays, the value within the array will always be 0.

Throws:

JIDLException - If IDL encounters an error.

createObject(int, Object[], int[], JIDLProcessInitializer)

public void createObject(int argc, java.lang.Object[] argv, int[] argpal, com.idl.javaidl.JIDLProcessInitializer initializer)

Create the wrapped object by calling IDL’s ::INIT method.

The argc, argv, argpal parameters are used to supply parameters to the underlying IDL object’s ::Init method The initializer parameter is used to supply IDL process initialization values.

If the ::Init method does not have any parameters, the caller sets argc, argv, argpal to 0, null, null, respectively.

create-Object does the following:

• Calls ::Init method in the IDL object
• Calls the superclass init-Listeners method to initialize any event handlers. The init-Listeners method has default behavior, which is different for graphical and non-graphical objects. If the default behavior is not desired, a sub-class to modify the listener initialization may override the init-Listeners method.

Specified By:

createObject in interface JIDLObjectI

Parameters:

argc - the number of parameters to be passed to INIT

argv - array of Objects to be passed to IDL. This array should be of length argc and should contain objects of type JIDLNumber, JIDLObject, JIDLString or JIDLArray.

argpal - array of flags denoting whether each argv parameter that is of type array should be convolved or not. For parameters that are not arrays, the value within the array will always be 0.

initializer - a JIDLProcessInitializer object that specifies IDL process initialization parameters such as the licensing mode to be used.

Throws:

JIDLException - If IDL encounters an error.

createObject(JIDLProcessInitializer)

public void createObject(com.idl.javaidl.JIDLProcessInitializer initializer)

Create the wrapped object by calling IDL’s ::INIT method.

Used for ::INIT methods that take zero parameters.

The initializer parameter is used to supply IDL process initialization values.

Parameters:

initializer - a JIDLProcessInitializer object that specifies IDL process initialization parameters such as the licensing mode to be used.

Throws:

JIDLException - If IDL encounters an error.

destroyObject()

public void destroyObject()

Destroys the underlying IDL object associated with the wrapper.

If the object being destroyed is the last object within an OPS process, the OPS process is also destroyed.

Note that this does not destroy the actual wrapper object. Because the wrapper object is a Java object, it follows all the Java reference counting/garbage collection schemes. Once all references to the wrapper object are released from Java code and once the Java Virtual Machine calls the garbage collector, the wrapper object may be deleted from memory.

Specified By:

destroyObject in interface JIDLObjectI

executeString(String)

public void executeString(java.lang.String sCmd)

Execute the given command string in IDL.

Specified By:

executeString in interface JIDLObjectI

Parameters:

sCmd - the single-line command to execute in IDL.

Throws:

JIDLException - If IDL encounters an error.

getClassName()

public java.lang.String getClassName()

Deprecated.

Replaced by getIDLObjectClassName()

Get the class name of the object.

Returns:

class name (“” if object not created yet)

getCookie()

public long getCookie()

Internal use.

Specified By:

getCookie in interface JIDLObjectI

getIDLObjectClassName()

public java.lang.String getIDLObjectClassName()

Retrieves the IDL object class name of the underlying IDL object.

Specified By:

getIDLObjectClassName in interface JIDLObjectI

Returns:

the IDL object class name

getIDLObjectVariableName()

public java.lang.String getIDLObjectVariableName()

When the underlying IDL object was created in the IDL process, it was assigned a variable name. This method retrieves that name.

Specified By:

getIDLObjectVariableName in interface JIDLObjectI

Returns:

the variable name

getIDLVariable(String)

public java.lang.Object getIDLVariable(java.lang.String sVar)

Given a variable name, return the IDL variable.

Note that in the case of arrays, the array will ALWAYS be convolved when passed between Java and IDL.

Specified By:

getIDLVariable in interface JIDLObjectI

Parameters:

sVar - The IDL variable name

Returns:

an Object of type JIDLNumber, JIDLString, JIDLObject or JIDLArray. The caller must know the type of the Object being returned and cast it to its proper type. May also return null.

Throws:

JIDLException - If IDL encounters an error.

getObjVariableName()

public java.lang.String getObjVariableName()

Deprecated.

Replaced by getIDLObjectVariableName()

Get the IDL Variable name of the given object

Returns:

a String representing the IDL Variable name

getProcessName()

public java.lang.String getProcessName()

Returns the name of the process that contains the underlying IDL object. For an in-process object, returns an empty string.

Specified By:

getProcessName in interface JIDLObjectI

Returns:

process name. Empty string if the process is in-process.

getProperty(String, int)

public java.lang.Object getProperty(java.lang.String sProperty, int iPalFlag)

Call IDL get-Property method to get named property.

Specified By:

getProperty in interface JIDLObjectI

Parameters:

sProperty - the property name

iPalFlag - a flag determining whether a returned array will be convolved or not. If the returned value is not is ignored.

Returns:

an Object of type JIDLNumber, JIDLString, JIDLObject or JIDLArray. The caller must know the type of the Object being returned and cast it to its proper type. May also return null.

Throws:

JIDLException - If IDL encounters an error.

See Also:

JIDLNumber, JIDLObjectI, JIDLString, JIDLArray, JIDLConst.PARMFLAG_CONVMAJORITY, JIDLConst.PARMFLAG_NO_CONVMAJORITY

initListeners()

public void initListeners()

Initialize listeners.

This method is always called by create-Object. The JIDLObject listens to no events, but this method may be overridden by sub-classes to initialize a different set of listeners (or none at all).

For example if a sub-class of JIDLObject wished to listen to IDL output events, it would need to implement JIDLOutput-Listener and register to listen for these events in init-Listeners, as follows:

 public class new-Object extends JIDLObject implements JIDLOutput-Listener

 {

     public void init-Listeners() {

         add-IDLOutput-Listener(this);

     }

     void IDLoutput(JIDLObject-I obj, String s) {

        // do something with the output

     }

 }

Specified By:

initListeners in interface JIDLObjectI

See Also:

JIDLNotifyListener, JIDLOutputListener

isObjCreated()

public boolean isObjCreated()

Deprecated.

Replaced by isObjectCreated()

Determine if object has been created successfully.

Returns:

true if object created successfully, or falseif object not created or creation was unsuccessful.

isObjectCreated()

public boolean isObjectCreated()

Determine if object has been created successfully.

Specified By:

isObjectCreated in interface JIDLObjectI

Returns:

true if object created successfully, or false if object not created, destroyed, or creation was unsuccessful.

See Also:

createObject()

isObjectDisplayable()

public boolean isObjectDisplayable()

Specified By:

isObjectDisplayable in interface JIDLObjectI

removeIDLNotifyListener(JIDLNotifyListener)

public void removeIDLNotifyListener(com.idl.javaidl.JIDLNotifyListener listener)

Removes the specified IDL notify listener so it no longer receives IDL notifications.

Note that registering/unregistering for events should happen in the init-Listeners method or AFTER the create-Object method.

Specified By:

removeIDLNotifyListener in interface JIDLObjectI

Parameters:

listener - the listener

removeIDLOutputListener(JIDLOutputListener)

public void removeIDLOutputListener(com.idl.javaidl.JIDLOutputListener

listener)

Removes the specified IDL output listener on this object.

Note that registering/unregistering for events should happen in the init-Listeners method or AFTER the create-Object method.

Specified By:

removeIDLOutputListener in interface JIDLObjectI

Parameters:

listener - the listener

setIDLVariable(String, Object)

public void setIDLVariable(java.lang.String sVar, java.lang.Object obj)

Set/Create an IDL variable of the given name and value.

Note that in the case of arrays, the array will ALWAYS be convolved when passed between Java and IDL.

Specified By:

setIDLVariable in interface JIDLObjectI

Parameters:

sVar - the IDL variable name

obj - object to be passed to IDL. Should be an object of type JIDLNumber, JIDLObject, JIDLString or JIDLArray.

Throws:

JIDLException - If IDL encounters an error.

setProcessName(String)

public void setProcessName(java.lang.String process)

Set the process name that the object will be created in.

The process name may only be set before create-Object is called. If called after the object has been created, this method call does nothing.

Specified By:

setProcessName in interface JIDLObjectI

Parameters:

process - Process name. Empty String means create in same process (in-process).

setProperty(String, Object, int)

public void setProperty(java.lang.String sProperty, java.lang.Object obj, int iPalFlag)

Call IDL set-Property method to set named property.

The i-Pal-Flag parameter is a set of flags that are or-ed together. Currently this parameter is only used to specify whether a JIDLArray being passed in to IDL is convolved or not. For arrays argpal should be set to either JIDLConst.PARMFLAG_CONVMAJORITY or JIDLConst.PARMFLAG_NO_CONVMAJORITY.

Specified By:

setProperty in interface JIDLObjectI

Parameters:

sProperty - the property name

obj - object to be passed to IDL. Should be an object of type JIDLNumber, JIDLObject, JIDLString or JIDLObject.

iPalFlag - flag denoting whether the passed in parameter is convolved or not.
Note: set-Property does not allow obj to be modified by IDL

Throws:

JIDLException - If IDL encounters an error.

See Also:

JIDLNumber, JIDLObject, JIDLString, JIDLArray, JIDLConst.PARMFLAG_CONVMAJORITY, JIDLConst.PARMFLAG_NO_CONVMAJORITY

toString()

public java.lang.String toString()

Returns a string representation of the object.

Overrides:

toString in class Object