a_cmsresourcetypefolderbase.java

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        super.setDateExpired(cms, securityManager, resource, dateLastModified, recursive);

        if (recursive) {
            // collect all resources in the folder (but exclude deleted ones)
            List resources = securityManager.readChildResources(
                cms.getRequestContext(),
                resource,
                CmsResourceFilter.IGNORE_EXPIRATION,
                true,
                true);

            // now walk through all sub-resources in the folder
            for (int i = 0; i < resources.size(); i++) {
                CmsResource childResource = (CmsResource)resources.get(i);
                // handle child resources
                getResourceType(childResource).setDateExpired(
                    cms,
                    securityManager,
                    childResource,
                    dateLastModified,
                    recursive);
            }
        }
    }

    /**
     * @see org.opencms.file.types.I_CmsResourceType#setDateLastModified(org.opencms.file.CmsObject, CmsSecurityManager, CmsResource, long, boolean)
     */
    public void setDateLastModified(
        CmsObject cms,
        CmsSecurityManager securityManager,
        CmsResource resource,
        long dateLastModified,
        boolean recursive) throws CmsException {

        // handle the folder itself
        super.setDateLastModified(cms, securityManager, resource, dateLastModified, recursive);

        if (recursive) {
            // collect all resources in the folder (but exclude deleted ones)
            List resources = securityManager.readChildResources(
                cms.getRequestContext(),
                resource,
                CmsResourceFilter.IGNORE_EXPIRATION,
                true,
                true);

            // now walk through all sub-resources in the folder
            for (int i = 0; i < resources.size(); i++) {
                CmsResource childResource = (CmsResource)resources.get(i);
                // handle child resources
                getResourceType(childResource).setDateLastModified(
                    cms,
                    securityManager,
                    childResource,
                    dateLastModified,
                    recursive);
            }
        }
    }

    /**
     * @see org.opencms.file.types.I_CmsResourceType#setDateReleased(org.opencms.file.CmsObject, CmsSecurityManager, CmsResource, long, boolean)
     */
    public void setDateReleased(
        CmsObject cms,
        CmsSecurityManager securityManager,
        CmsResource resource,
        long dateLastModified,
        boolean recursive) throws CmsException {

        // handle the folder itself
        super.setDateReleased(cms, securityManager, resource, dateLastModified, recursive);

        if (recursive) {
            // collect all resources in the folder (but exclude deleted ones)
            List resources = securityManager.readChildResources(
                cms.getRequestContext(),
                resource,
                CmsResourceFilter.IGNORE_EXPIRATION,
                true,
                true);

            // now walk through all sub-resources in the folder
            for (int i = 0; i < resources.size(); i++) {
                CmsResource childResource = (CmsResource)resources.get(i);
                // handle child resources
                getResourceType(childResource).setDateReleased(
                    cms,
                    securityManager,
                    childResource,
                    dateLastModified,
                    recursive);
            }
        }
    }

    /**
     * @see org.opencms.file.types.A_CmsResourceType#undelete(org.opencms.file.CmsObject, org.opencms.db.CmsSecurityManager, org.opencms.file.CmsResource, boolean)
     */
    public void undelete(CmsObject cms, CmsSecurityManager securityManager, CmsResource resource, boolean recursive)
    throws CmsException {

        // handle the folder itself
        super.undelete(cms, securityManager, resource, recursive);

        if (recursive) {
            // collect all resources in the folder (but exclude deleted ones)
            List resources = securityManager.readChildResources(
                cms.getRequestContext(),
                resource,
                CmsResourceFilter.ALL,
                true,
                true);

            // now walk through all sub-resources in the folder
            for (int i = 0; i < resources.size(); i++) {
                CmsResource childResource = (CmsResource)resources.get(i);
                // handle child resources
                getResourceType(childResource).undelete(cms, securityManager, childResource, recursive);
            }
        }
    }

    /**
     * @see org.opencms.file.types.I_CmsResourceType#undoChanges(org.opencms.file.CmsObject, CmsSecurityManager, CmsResource, CmsResource.CmsResourceUndoMode)
     */
    public void undoChanges(
        CmsObject cms,
        CmsSecurityManager securityManager,
        CmsResource resource,
        CmsResource.CmsResourceUndoMode mode) throws CmsException {

        boolean recursive = mode.isRecursive();
        if (mode == CmsResource.UNDO_MOVE_CONTENT) {
            // undo move only?
            String originalPath = securityManager.resourceOriginalPath(cms.getRequestContext(), resource);
            if (originalPath.equals(resource.getRootPath())) {
                // resource not moved
                recursive = false;
            }
        }

        List resources = null;
        if (recursive) { // recursive?
            // collect all resources in the folder (including deleted ones)
            resources = securityManager.readChildResources(
                cms.getRequestContext(),
                resource,
                CmsResourceFilter.ALL,
                true,
                true);
        }

        // handle the folder itself, undo move op
        super.undoChanges(cms, securityManager, resource, mode);

        // the folder may have been moved back to its original position        
        CmsResource undoneResource2 = securityManager.readResource(
            cms.getRequestContext(),
            resource.getStructureId(),
            CmsResourceFilter.ALL);
        boolean isMoved = !undoneResource2.getRootPath().equals(resource.getRootPath());

        if (recursive && (resources != null)) { // recursive?
            // now walk through all sub-resources in the folder, and undo first
            for (int i = 0; i < resources.size(); i++) {
                CmsResource childResource = (CmsResource)resources.get(i);
                I_CmsResourceType type = getResourceType(childResource);
                if (isMoved) {
                    securityManager.lockResource(cms.getRequestContext(), childResource, CmsLockType.EXCLUSIVE);
                }
                if (childResource.isFolder()) {
                    // recurse into this method for subfolders
                    type.undoChanges(cms, securityManager, childResource, mode);
                } else if (!childResource.getState().isNew()) {
                    // undo changes for changed files
                    securityManager.undoChanges(cms.getRequestContext(), childResource, mode);
                } else {
                    // undo move for new files? move with the folder
                    if (mode.isUndoMove()) {
                        String newPath = cms.getRequestContext().removeSiteRoot(
                            securityManager.readResource(
                                cms.getRequestContext(),
                                resource.getStructureId(),
                                CmsResourceFilter.ALL).getRootPath()
                                + childResource.getName());
                        type.moveResource(cms, securityManager, childResource, newPath);
                    }
                }
            }

            // now iterate again all sub-resources in the folder, and actualize the relations
            for (int i = 0; i < resources.size(); i++) {
                CmsResource childResource = (CmsResource)resources.get(i);
                updateRelationForUndo(cms, securityManager, childResource);
            }
        }
    }

    /**
     * Checks if there are at least one character in the folder name,
     * also ensures that it starts and ends with a '/'.<p>
     *
     * @param resourcename folder name to check (complete path)
     * 
     * @return the validated folder name
     * 
     * @throws CmsIllegalArgumentException if the folder name is empty or <code>null</code>
     */
    private String validateFoldername(String resourcename) throws CmsIllegalArgumentException {

        if (CmsStringUtil.isEmpty(resourcename)) {
            throw new CmsIllegalArgumentException(org.opencms.db.Messages.get().container(
                org.opencms.db.Messages.ERR_BAD_RESOURCENAME_1,
                resourcename));
        }
        if (!CmsResource.isFolder(resourcename)) {
            resourcename = resourcename.concat("/");
        }
        if (resourcename.charAt(0) != '/') {
            resourcename = "/".concat(resourcename);
        }
        return resourcename;
    }
}