ComOleDaemon.java
/*
** Module : ComOleDaemon.java
** Abstract : Helper methods to handle COM Automation processing.
**
** Copyright (c) 2017-2024, Golden Code Development Corporation.
**
** -#- -I- --Date-- ---------------------------------Description----------------------------------
** 001 CA 20171025 Created initial version.
** 002 CA 20171116 Added support for COM property setter with indices.
** 003 OM 20190223 Added support for indexed properties.
** 004 GBB 20240826 Removing single client and renaming relevant args.
*/
/*
** This program is free software: you can redistribute it and/or modify
** it under the terms of the GNU Affero General Public License as
** published by the Free Software Foundation, either version 3 of the
** License, or (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU Affero General Public License for more details.
**
** You may find a copy of the GNU Affero GPL version 3 at the following
** location: https://www.gnu.org/licenses/agpl-3.0.en.html
**
** Additional terms under GNU Affero GPL version 3 section 7:
**
** Under Section 7 of the GNU Affero GPL version 3, the following additional
** terms apply to the works covered under the License. These additional terms
** are non-permissive additional terms allowed under Section 7 of the GNU
** Affero GPL version 3 and may not be removed by you.
**
** 0. Attribution Requirement.
**
** You must preserve all legal notices or author attributions in the covered
** work or Appropriate Legal Notices displayed by works containing the covered
** work. You may not remove from the covered work any author or developer
** credit already included within the covered work.
**
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**
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*/
package com.goldencode.p2j.comauto;
import com.goldencode.p2j.net.*;
import com.goldencode.p2j.util.*;
/**
* Helper methods to handle COM Automation processing. Delegates the calls to
* {@link ComOleHelper}. Exposes these APIs to the server-side via a {@link ComOleOps} network
* server.
*/
public class ComOleDaemon
implements ComOleOps
{
/** Token used to authenticate with the dispatcher when registering APIs. */
private static Object modToken = null;
/**
* Create an instance and export its API to the network.
*
* @param local
* <code>true</code> to register purely on a local basis (no remote/network access to these
* methods).
*/
public ComOleDaemon(boolean local)
{
Class<?>[] ifaces = new Class<?>[]
{
ComOleOps.class
};
synchronized (ComOleDaemon.class)
{
modToken = RemoteObject.registerServer(ifaces, this, modToken, local);
}
}
/**
* Release and destroy the COM object with the specified ID.
*
* @param comId
* The COM object ID.
*/
@Override
public void release(long comId)
{
ComOleHelper.release(comId);
}
/**
* Obtain a reference to an automation. It can be a new instance or a reference to an
* already existing top-level automation.
*
* @param comObjectType
* The name of the automation.
* @param topLevel
* Only return top-level. If the requested {@code comObjectType} is not a top-level,
* return {@code null}.
* @param noCreate
* Must exist. Do not allow creation of new instances. Only used with {@code topLevel}
* requests.
*
* @return The ID of the COM object, or {@code 0} if such automation does not exist
* or it does not satisfy the parameter constraints.
*/
@Override
public long create(String comObjectType, boolean topLevel, boolean noCreate)
{
return ComOleHelper.create(comObjectType, topLevel, noCreate);
}
/**
* Get the specified COM object property.
*
* @param comId
* The COM object ID.
* @param prop
* The COM property name to retrieve.
* @param indices
* A variable number of indices used to access this property's element.
*
* @return A {@link BaseDataType} instance with the COM property's details.
*/
@Override
public BaseDataType getProperty(long comId, String prop, ComParameter[] indices)
{
return ComOleHelper.getProperty(comId, prop, indices);
}
/**
* Set the specified COM object property.
*
* @param comId
* The COM object ID.
* @param prop
* The COM property name to set.
* @param val
* The details about property's new value.
* @param indices
* A variable number of indices used to access this property's element.
*
* @return <code>true</code> if the property was set successfully.
*/
@Override
public boolean setProperty(long comId, String prop, ComParameter val, ComParameter[] indices)
{
return ComOleHelper.setProperty(comId, prop, val, indices);
}
/**
* Execute a COM object method call.
*
* @param comId
* The COM object ID.
* @param methodName
* The COM method name to call.
* @param aParams
* An array with this call's arguments supplied to the COM object method call.
*
* @return An array where on index 0 are details of the returned value, and further indices
* correspond with argument's 1-based indices, where there will be a value for each
* OUTPUT or INPUT-OUTPUT argument.
*/
@Override
public BaseDataType[][] call(long comId, String methodName, ComParameter[] aParams)
{
return ComOleHelper.call(comId, methodName, aParams);
}
/**
* Get the COM object name associated with the given COM object ID.
*
* @param comId
* The COM object ID.
*
* @return See above.
*/
@Override
public String getName(long comId)
{
return ComOleHelper.getName(comId);
}
/**
* Gets COM Automation support level for particular OS. Only Windows system has this
* functionality.
*
* @return <code>TRUE</code> if COM objects are supported, <code>FALSE</code> otherwise.
*/
@Override
public boolean isSupported()
{
return ComOleHelper.isSupported();
}
}