home *** CD-ROM | disk | FTP | other *** search
- /*
- * $RCSfile: createVersion.c,v $
- * $Revision: 1.1.1.1 $
- * $Date: 1996/05/04 21:55:32 $
- */
- /**********************************************************************
- * EXODUS Database Toolkit Software
- * Copyright (c) 1991 Computer Sciences Department, University of
- * Wisconsin -- Madison
- * All Rights Reserved.
- *
- * Permission to use, copy, modify and distribute this software and its
- * documentation is hereby granted, provided that both the copyright
- * notice and this permission notice appear in all copies of the
- * software, derivative works or modified versions, and any portions
- * thereof, and that both notices appear in supporting documentation.
- *
- * THE COMPUTER SCIENCES DEPARTMENT OF THE UNIVERSITY OF WISCONSIN --
- * MADISON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" CONDITION.
- * THE DEPARTMENT DISCLAIMS ANY LIABILITY OF ANY KIND FOR ANY DAMAGES
- * WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- *
- * The EXODUS Project Group requests users of this software to return
- * any improvements or extensions that they make to:
- *
- * EXODUS Project Group
- * c/o David J. DeWitt and Michael J. Carey
- * Computer Sciences Department
- * University of Wisconsin -- Madison
- * Madison, WI 53706
- *
- * or exodus@cs.wisc.edu
- *
- * In addition, the EXODUS Project Group requests that users grant the
- * Computer Sciences Department rights to redistribute these changes.
- **********************************************************************/
-
- #include <stdio.h>
- #include "ess.h"
- #include "checking.h"
- #include "io.h"
- #include "object.h"
- #include "trace.h"
- #include "error.h"
- #include "list.h"
- #include "pool.h"
- #include "bf_external_group.h"
- #include "version_graph.h"
- #include "version_funcs.h"
- #include "sm_macro.h"
-
-
- int
- createVersion(
- VERSIONGRAPH *graph, /* graph to create version in */
- OID *parentOid, /* parent object for version */
- VHGNODEID parentNodeId, /* node in VHG of parentOid */
- VHGNODEID *newNodeId /* new version id for version */
- )
- {
- VHGNODE* newNode;
-
- TRPRINT(TR_VERSION, TR_LEVEL_1, ("Adding a new VHG node \n") );
-
- /*
- * Do some defensive error checking.
- */
- CHECK_VERSIONGRAPH_MAGIC(graph);
- CHECK_VHGNODE_MAGIC(&graph->nodeArray[parentNodeId]);
-
- /*
- * Validate parentNode
- */
- if (parentNodeId >= graph->nodeCount) {
- SM_ERROR(TYPE_FATAL, esmINTERNAL);
- }
-
- /*
- * Validate parentNode and parentOid
- */
- if ( !OIDEQ(graph->nodeArray[parentNodeId].oid, *parentOid) ) {
- SM_ERROR(TYPE_FATAL, esmINTERNAL);
- }
-
- /*
- * Make sure parent version is frozen
- */
- if ( ! (graph->nodeArray[parentNodeId].flags & V_frozen) ) {
- SM_ERROR(TYPE_FATAL, esmINTERNAL);
- }
-
- /*
- * It should now be safe to set up the version node
- */
-
- /*
- * get a new node
- */
- newNode = listVHGDeq(graph, &graph->freeList);
- if (newNode == NULL) {
- SM_ERROR(TYPE_FATAL, esmINTERNAL);
- }
-
- /*
- * Check its magic number
- */
- CHECK_VHGNODE_MAGIC(newNode);
-
- /*
- * No flags are initially set for a node
- */
- newNode->flags = NOFLAGS;
-
- /*
- * Set the new node's parent
- */
- newNode->parentId = parentNodeId;
-
- /*
- * The new node has no children
- */
- initializeVHGList(graph, &newNode->children);
-
- /*
- * Add the node as a child of the parent
- */
- listVHGEnq(graph, &graph->nodeArray[parentNodeId].children, &newNode->siblings);
-
- /*
- * Make sure nothing was messed up
- */
- CHECK_VERSIONGRAPH_MAGIC(graph);
- CHECK_VHGNODE_MAGIC(newNode);
- CHECK_VHGNODE_MAGIC(&graph->nodeArray[parentNodeId]);
-
- /*
- * Return the new node id
- */
- *newNodeId = newNode->id;
- return esmNOERROR;
- }
-