Example usage for javax.transaction UserTransaction begin

List of usage examples for javax.transaction UserTransaction begin

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Introduction

In this page you can find the example usage for javax.transaction UserTransaction begin.

Prototype

void begin() throws NotSupportedException, SystemException;

Source Link

Document

Create a new transaction and associate it with the current thread.

Usage

From source file:org.alfresco.web.bean.ajax.CategoryBrowserPluginBean.java

/**
 * Retrieves the child folders for the noderef given in the 'noderef' parameter and caches the nodes against the area
 * in the 'area' parameter.//from  w ww. j  av a2s  . c om
 */
public void retrieveChildren() throws IOException {
    FacesContext context = FacesContext.getCurrentInstance();
    ResponseWriter out = context.getResponseWriter();

    UserTransaction tx = null;
    try {
        tx = Repository.getUserTransaction(context, true);
        tx.begin();

        Map params = context.getExternalContext().getRequestParameterMap();
        String nodeRefStr = (String) params.get("nodeRef");

        // work out which list to cache the nodes in
        Map<String, TreeNode> currentNodes = getNodesMap();

        if (nodeRefStr != null && currentNodes != null) {
            // get the given node's details
            NodeRef parentNodeRef = new NodeRef(nodeRefStr);
            TreeNode parentNode = currentNodes.get(parentNodeRef.toString());
            parentNode.setExpanded(true);

            if (logger.isDebugEnabled())
                logger.debug("retrieving children for noderef: " + parentNodeRef);

            // remove any existing children as the latest ones will be added
            // below
            parentNode.removeChildren();

            // get all the child folder objects for the parent
            List<ChildAssociationRef> childRefs = this.getNodeService().getChildAssocs(parentNodeRef,
                    ContentModel.ASSOC_SUBCATEGORIES, RegexQNamePattern.MATCH_ALL);
            List<TreeNode> sortedNodes = new ArrayList<TreeNode>();
            for (ChildAssociationRef ref : childRefs) {
                NodeRef nodeRef = ref.getChildRef();
                logger.debug("retrieving child : " + nodeRef);
                // build the XML representation of the child node
                TreeNode childNode = createTreeNode(nodeRef);
                parentNode.addChild(childNode);
                currentNodes.put(childNode.getNodeRef(), childNode);
                sortedNodes.add(childNode);
            }

            // order the tree nodes by the tree label
            if (sortedNodes.size() > 1) {
                QuickSort sorter = new QuickSort(sortedNodes, "name", true,
                        IDataContainer.SORT_CASEINSENSITIVE);
                sorter.sort();
            }

            // generate the XML representation
            StringBuilder xml = new StringBuilder(
                    "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\" ?><nodes>");
            for (TreeNode childNode : sortedNodes) {
                xml.append(childNode.toXML());
            }
            xml.append("</nodes>");

            // send the generated XML back to the tree
            out.write(xml.toString());

            if (logger.isDebugEnabled())
                logger.debug("returning XML: " + xml.toString());
        }

        // commit the transaction
        tx.commit();
    } catch (Throwable err) {
        try {
            if (tx != null) {
                tx.rollback();
            }
        } catch (Exception tex) {
        }
    }
}

From source file:org.alfresco.web.bean.ajax.NavigatorPluginBean.java

/**
 * Retrieves the child folders for the noderef given in the 
 * 'noderef' parameter and caches the nodes against the area in
 * the 'area' parameter.//w  w w  . j  a v  a 2 s .  c  o  m
 */
public void retrieveChildren() throws IOException {
    FacesContext context = FacesContext.getCurrentInstance();
    ResponseWriter out = context.getResponseWriter();

    UserTransaction tx = null;
    try {
        tx = Repository.getUserTransaction(context, true);
        tx.begin();

        Map params = context.getExternalContext().getRequestParameterMap();
        String nodeRefStr = (String) params.get("nodeRef");
        String area = (String) params.get("area");

        if (logger.isDebugEnabled())
            logger.debug("retrieveChildren: area = " + area + ", nodeRef = " + nodeRefStr);

        // work out which list to cache the nodes in
        Map<String, TreeNode> currentNodes = getNodesMapForArea(area);

        if (nodeRefStr != null && currentNodes != null) {
            // get the given node's details
            NodeRef parentNodeRef = new NodeRef(nodeRefStr);
            TreeNode parentNode = currentNodes.get(parentNodeRef.toString());
            parentNode.setExpanded(true);

            if (logger.isDebugEnabled())
                logger.debug("retrieving children for noderef: " + parentNodeRef);

            // remove any existing children as the latest ones will be added below
            parentNode.removeChildren();

            // get all the child folder objects for the parent
            List<ChildAssociationRef> childRefs = this.getNodeService().getChildAssocs(parentNodeRef,
                    ContentModel.ASSOC_CONTAINS, RegexQNamePattern.MATCH_ALL);
            List<TreeNode> sortedNodes = new ArrayList<TreeNode>();
            for (ChildAssociationRef ref : childRefs) {
                NodeRef nodeRef = ref.getChildRef();

                if (isAddableChild(nodeRef)) {
                    // build the XML representation of the child node
                    TreeNode childNode = createTreeNode(nodeRef);
                    parentNode.addChild(childNode);
                    currentNodes.put(childNode.getNodeRef(), childNode);
                    sortedNodes.add(childNode);
                }
            }

            // order the tree nodes by the tree label
            if (sortedNodes.size() > 1) {
                QuickSort sorter = new QuickSort(sortedNodes, "name", true,
                        IDataContainer.SORT_CASEINSENSITIVE);
                sorter.sort();
            }

            // generate the XML representation
            StringBuilder xml = new StringBuilder(
                    "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\" ?><nodes>");
            for (TreeNode childNode : sortedNodes) {
                xml.append(childNode.toXML());
            }
            xml.append("</nodes>");

            // send the generated XML back to the tree
            out.write(xml.toString());

            if (logger.isDebugEnabled())
                logger.debug("returning XML: " + xml.toString());
        }

        // commit the transaction
        tx.commit();
    } catch (Throwable err) {
        try {
            if (tx != null) {
                tx.rollback();
            }
        } catch (Exception tex) {
        }
    }
}

From source file:org.alfresco.web.bean.ajax.NavigatorPluginBean.java

/**
 * Returns the root nodes for the company home panel.
 * <p>/*from   w w  w. j a v a  2  s  . co  m*/
 * As the user expands and collapses nodes in the client this
 * cache will be updated with the appropriate nodes and states.
 * </p>
 * 
 * @return List of root nodes for the company home panel
 */
public List<TreeNode> getCompanyHomeRootNodes() {
    if (this.companyHomeRootNodes == null) {
        this.companyHomeRootNodes = new ArrayList<TreeNode>();
        this.companyHomeNodes = new HashMap<String, TreeNode>();

        UserTransaction tx = null;
        try {
            FacesContext fc = FacesContext.getCurrentInstance();
            tx = Repository.getUserTransaction(fc, true);
            tx.begin();

            // query for the child nodes of company home
            NodeRef root = new NodeRef(Repository.getStoreRef(), Application.getCompanyRootId(fc));
            List<ChildAssociationRef> childRefs = this.getNodeService().getChildAssocs(root,
                    ContentModel.ASSOC_CONTAINS, RegexQNamePattern.MATCH_ALL);

            for (ChildAssociationRef ref : childRefs) {
                NodeRef child = ref.getChildRef();

                if (isAddableChild(child)) {
                    TreeNode node = createTreeNode(child);
                    this.companyHomeRootNodes.add(node);
                    this.companyHomeNodes.put(node.getNodeRef(), node);
                }
            }

            tx.commit();
        } catch (Throwable err) {
            Utils.addErrorMessage("NavigatorPluginBean exception in getCompanyHomeRootNodes()", err);
            try {
                if (tx != null) {
                    tx.rollback();
                }
            } catch (Exception tex) {
            }
        }
    }

    return this.companyHomeRootNodes;
}

From source file:org.alfresco.web.bean.ajax.NavigatorPluginBean.java

/**
 * Returns the root nodes for the my home panel.
 * <p>/*from   www.  j a v  a2s  .  c o m*/
 * As the user expands and collapses nodes in the client this
 * cache will be updated with the appropriate nodes and states.
 * </p>
 * 
 * @return List of root nodes for the my home panel
 */
public List<TreeNode> getMyHomeRootNodes() {
    if (this.myHomeRootNodes == null) {
        this.myHomeRootNodes = new ArrayList<TreeNode>();
        this.myHomeNodes = new HashMap<String, TreeNode>();

        UserTransaction tx = null;
        try {
            tx = Repository.getUserTransaction(FacesContext.getCurrentInstance(), true);
            tx.begin();

            // query for the child nodes of the user's home
            NodeRef root = new NodeRef(Repository.getStoreRef(),
                    Application.getCurrentUser(FacesContext.getCurrentInstance()).getHomeSpaceId());
            List<ChildAssociationRef> childRefs = this.getNodeService().getChildAssocs(root,
                    ContentModel.ASSOC_CONTAINS, RegexQNamePattern.MATCH_ALL);

            for (ChildAssociationRef ref : childRefs) {
                NodeRef child = ref.getChildRef();

                if (isAddableChild(child)) {
                    TreeNode node = createTreeNode(child);
                    this.myHomeRootNodes.add(node);
                    this.myHomeNodes.put(node.getNodeRef(), node);
                }
            }

            tx.commit();
        } catch (Throwable err) {
            Utils.addErrorMessage("NavigatorPluginBean exception in getMyHomeRootNodes()", err);
            try {
                if (tx != null) {
                    tx.rollback();
                }
            } catch (Exception tex) {
            }
        }
    }

    return this.myHomeRootNodes;
}

From source file:org.alfresco.web.bean.ajax.NavigatorPluginBean.java

/**
 * Returns the root nodes for the guest home panel.
 * <p>/*from w  ww . j a va2 s.c  om*/
 * As the user expands and collapses nodes in the client this
 * cache will be updated with the appropriate nodes and states.
 * </p>
 * 
 * @return List of root nodes for the guest home panel
 */
public List<TreeNode> getGuestHomeRootNodes() {
    if (this.guestHomeRootNodes == null) {
        this.guestHomeRootNodes = new ArrayList<TreeNode>();
        this.guestHomeNodes = new HashMap<String, TreeNode>();

        UserTransaction tx = null;
        try {
            tx = Repository.getUserTransaction(FacesContext.getCurrentInstance(), true);
            tx.begin();

            // query for the child nodes of the guest home space
            NavigationBean navBean = getNavigationBean();
            if (navBean != null) {
                NodeRef root = navBean.getGuestHomeNode().getNodeRef();
                List<ChildAssociationRef> childRefs = this.getNodeService().getChildAssocs(root,
                        ContentModel.ASSOC_CONTAINS, RegexQNamePattern.MATCH_ALL);

                for (ChildAssociationRef ref : childRefs) {
                    NodeRef child = ref.getChildRef();

                    if (isAddableChild(child)) {
                        TreeNode node = createTreeNode(child);
                        this.guestHomeRootNodes.add(node);
                        this.guestHomeNodes.put(node.getNodeRef(), node);
                    }
                }
            }

            tx.commit();
        } catch (Throwable err) {
            Utils.addErrorMessage("NavigatorPluginBean exception in getGuestHomeRootNodes()", err);
            try {
                if (tx != null) {
                    tx.rollback();
                }
            } catch (Exception tex) {
            }
        }
    }

    return this.guestHomeRootNodes;
}

From source file:org.alfresco.web.bean.ajax.PickerBean.java

/**
 * Return the JSON objects representing a list of categories.
 * /*www  . ja v a 2  s  .c  om*/
 * IN: "parent" - null for root categories, else the parent noderef of the categories to retrieve.
 * 
 * The pseudo root node 'Categories' is not selectable.
 */
@InvokeCommand.ResponseMimetype(value = MimetypeMap.MIMETYPE_HTML)
public void getCategoryNodes() throws Exception {
    FacesContext fc = FacesContext.getCurrentInstance();

    UserTransaction tx = null;
    try {
        tx = Repository.getUserTransaction(FacesContext.getCurrentInstance(), true);
        tx.begin();

        Collection<ChildAssociationRef> childRefs;
        NodeRef parentRef = null;
        Map params = fc.getExternalContext().getRequestParameterMap();
        String strParentRef = Utils.encode((String) params.get(PARAM_PARENT));
        if (strParentRef == null || strParentRef.length() == 0) {
            childRefs = this.getCategoryService().getRootCategories(Repository.getStoreRef(),
                    ContentModel.ASPECT_GEN_CLASSIFIABLE);
        } else {
            parentRef = new NodeRef(strParentRef);
            childRefs = this.getCategoryService().getChildren(parentRef, CategoryService.Mode.SUB_CATEGORIES,
                    CategoryService.Depth.IMMEDIATE);
        }

        JSONWriter out = new JSONWriter(fc.getResponseWriter());
        out.startObject();
        out.startValue(ID_PARENT);
        out.startObject();
        if (parentRef == null) {
            out.writeNullValue(ID_ID);
            out.writeValue(ID_NAME, Application.getMessage(fc, MSG_CATEGORIES));
            out.writeValue(ID_ISROOT, true);
            out.writeValue(ID_SELECTABLE, false);
        } else {
            out.writeValue(ID_ID, strParentRef);
            out.writeValue(ID_NAME, Repository.getNameForNode(this.getInternalNodeService(), parentRef));
        }
        out.endObject();
        out.endValue();
        out.startValue(ID_CHILDREN);
        out.startArray();
        for (ChildAssociationRef ref : childRefs) {
            NodeRef nodeRef = ref.getChildRef();
            out.startObject();
            out.writeValue(ID_ID, nodeRef.toString());
            out.writeValue(ID_NAME, Repository.getNameForNode(this.getInternalNodeService(), nodeRef));
            out.endObject();
        }
        out.endArray();
        out.endValue();
        out.endObject();

        tx.commit();
    } catch (Throwable err) {
        Utils.addErrorMessage("PickerBean exception in getCategoryRootNodes()", err);
        fc.getResponseWriter().write("ERROR: " + err.getMessage());
        try {
            if (tx != null) {
                tx.rollback();
            }
        } catch (Exception tex) {
        }
    }
}

From source file:org.alfresco.web.bean.ajax.PickerBean.java

/**
 * Return the JSON objects representing a list of cm:folder nodes.
 * /*from ww  w .  ja  v a2s. c o m*/
 * IN: "parent" - noderef (can be null) of the parent to retrieve the child folder nodes for. Null is valid
 *        and specifies the Company Home root as the parent.
 * IN: "child" - non-null value of the child noderef to retrieve the siblings for - the parent value returned
 *        in the JSON response will be the parent of the specified child.
 * 
 * The 16x16 pixel folder icon path is output as the 'icon' property for each child folder. 
 */
@InvokeCommand.ResponseMimetype(value = MimetypeMap.MIMETYPE_HTML)
public void getTagNodes() throws Exception {
    FacesContext fc = FacesContext.getCurrentInstance();

    UserTransaction tx = null;
    try {
        tx = Repository.getUserTransaction(FacesContext.getCurrentInstance(), true);
        tx.begin();

        Collection<ChildAssociationRef> childRefs;
        NodeRef parentRef = null;
        Map params = fc.getExternalContext().getRequestParameterMap();
        String strParentRef = Utils.encode((String) params.get(ID_PARENT));
        if (strParentRef == null || strParentRef.length() == 0) {
            childRefs = this.getCategoryService().getRootCategories(Repository.getStoreRef(),
                    ContentModel.ASPECT_TAGGABLE);
        } else {
            parentRef = new NodeRef(strParentRef);
            childRefs = this.getCategoryService().getChildren(parentRef, CategoryService.Mode.SUB_CATEGORIES,
                    CategoryService.Depth.IMMEDIATE);
        }

        JSONWriter out = new JSONWriter(fc.getResponseWriter());
        out.startObject();
        out.startValue(ID_PARENT);
        out.startObject();
        if (parentRef == null) {
            out.writeNullValue(ID_ID);
            out.writeValue(ID_NAME, Application.getMessage(fc, MSG_TAGS));
            out.writeValue(ID_ISROOT, true);
            out.writeValue(ID_SELECTABLE, false);
        } else {
            out.writeValue(ID_ID, strParentRef);
            out.writeValue(ID_NAME, Repository.getNameForNode(this.getInternalNodeService(), parentRef));
        }
        out.endObject();
        out.endValue();
        out.startValue(ID_CHILDREN);
        out.startArray();
        for (ChildAssociationRef ref : childRefs) {
            NodeRef nodeRef = ref.getChildRef();
            out.startObject();
            out.writeValue(ID_ID, nodeRef.toString());
            out.writeValue(ID_NAME, Repository.getNameForNode(this.getInternalNodeService(), nodeRef));
            out.endObject();
        }
        out.endArray();
        out.endValue();
        out.endObject();

        tx.commit();
    } catch (Throwable err) {
        Utils.addErrorMessage("PickerBean exception in getTagNodes()", err);
        fc.getResponseWriter().write("ERROR: " + err.getMessage());
        try {
            if (tx != null) {
                tx.rollback();
            }
        } catch (Exception tex) {
        }
    }
}

From source file:org.alfresco.web.bean.ajax.PickerBean.java

@InvokeCommand.ResponseMimetype(value = MimetypeMap.MIMETYPE_HTML)
public void getFolderNodes() throws Exception {
    FacesContext fc = FacesContext.getCurrentInstance();

    UserTransaction tx = null;
    try {//ww w  .  j  a  v a 2 s. co  m
        tx = Repository.getUserTransaction(FacesContext.getCurrentInstance(), true);
        tx.begin();

        List<ChildAssociationRef> childRefs;
        NodeRef companyHomeRef = new NodeRef(Repository.getStoreRef(), Application.getCompanyRootId(fc));

        NodeRef parentRef = null;
        Map params = fc.getExternalContext().getRequestParameterMap();
        String strChildRef = Utils.encode((String) params.get(PARAM_CHILD));
        if (strChildRef != null && strChildRef.length() != 0) {
            // TODO: check permission on the parent
            NodeRef childRef = new NodeRef(strChildRef);
            parentRef = this.getNodeService().getPrimaryParent(childRef).getParentRef();
        } else {
            // TODO: check permission on the parent
            String strParentRef = Utils.encode((String) params.get(PARAM_PARENT));
            if (strParentRef == null || strParentRef.length() == 0) {
                parentRef = companyHomeRef;
                strParentRef = parentRef.toString();
            } else {
                parentRef = new NodeRef(strParentRef);
            }
        }

        List<FileInfo> folders = this.getFileFolderService().listFolders(parentRef);

        JSONWriter out = new JSONWriter(fc.getResponseWriter());
        out.startObject();
        out.startValue(ID_PARENT);
        out.startObject();
        out.writeValue(ID_ID, parentRef.toString());
        out.writeValue(ID_NAME, Repository.getNameForNode(this.getInternalNodeService(), parentRef));
        if (parentRef.equals(companyHomeRef)) {
            out.writeValue(ID_ISROOT, true);
        }
        out.endObject();
        out.endValue();
        out.startValue(ID_CHILDREN);
        out.startArray();

        // filter out those children that are not spaces
        for (FileInfo folder : folders) {
            out.startObject();
            out.writeValue(ID_ID, folder.getNodeRef().toString());
            out.writeValue(ID_NAME, (String) folder.getProperties().get(ContentModel.PROP_NAME));
            String icon = (String) folder.getProperties().get(ApplicationModel.PROP_ICON);
            out.writeValue(ID_ICON, FOLDER_IMAGE_PREFIX
                    + (icon != null ? icon + "-16.gif" : BrowseBean.SPACE_SMALL_DEFAULT + ".gif"));
            out.endObject();
        }

        out.endArray();
        out.endValue();
        out.endObject();

        tx.commit();
    } catch (Throwable err) {
        Utils.addErrorMessage("PickerBean exception in getFolderNodes()", err);
        fc.getResponseWriter().write("ERROR: " + err.getMessage());
        try {
            if (tx != null) {
                tx.rollback();
            }
        } catch (Exception tex) {
        }
    }
}

From source file:org.alfresco.web.bean.ajax.PickerBean.java

/**
 * Return the JSON objects representing a list of cm:folder and cm:content nodes.
 * /*from w w w .  ja v  a 2s.c o m*/
 * IN: "parent" - noderef (can be null) of the parent to retrieve the child nodes for. Null is valid
 *        and specifies the Company Home root as the parent.
 * IN: "child" - non-null value of the child noderef to retrieve the siblings for - the parent value returned
 *        in the JSON response will be the parent of the specified child.
 * IN: "mimetypes" (optional) - if set, a comma separated list of mimetypes to restrict the file list.
 * 
 * It is assumed that only files should be selectable, all cm:folder nodes will be marked with the
 * 'selectable:false' property. Therefore the parent (which is a folder) is not selectable.
 * 
 * The 16x16 pixel node icon path is output as the 'icon' property for each child, in addition each
 * cm:content node has an property of 'url' for content download. 
 */
@InvokeCommand.ResponseMimetype(value = MimetypeMap.MIMETYPE_HTML)
public void getFileFolderNodes() throws Exception {
    FacesContext fc = FacesContext.getCurrentInstance();

    UserTransaction tx = null;
    try {
        tx = Repository.getUserTransaction(FacesContext.getCurrentInstance(), true);
        tx.begin();

        DictionaryService dd = Repository.getServiceRegistry(fc).getDictionaryService();
        ContentService cs = Repository.getServiceRegistry(fc).getContentService();

        List<ChildAssociationRef> childRefs;
        NodeRef companyHomeRef = new NodeRef(Repository.getStoreRef(), Application.getCompanyRootId(fc));

        NodeRef parentRef = null;
        Map params = fc.getExternalContext().getRequestParameterMap();
        String strChildRef = Utils.encode((String) params.get(PARAM_CHILD));
        if (strChildRef != null && strChildRef.length() != 0) {
            // TODO: check permission on the parent
            NodeRef childRef = new NodeRef(strChildRef);
            parentRef = this.getNodeService().getPrimaryParent(childRef).getParentRef();
        } else {
            // TODO: check permission on the parent
            String strParentRef = Utils.encode((String) params.get(PARAM_PARENT));
            if (strParentRef == null || strParentRef.length() == 0) {
                parentRef = companyHomeRef;
                strParentRef = parentRef.toString();
            } else {
                parentRef = new NodeRef(strParentRef);
            }
        }

        // look for mimetype restriction parameter
        Set<String> mimetypes = null;
        String mimetypeParam = (String) params.get(PARAM_MIMETYPES);
        if (mimetypeParam != null && mimetypeParam.length() != 0) {
            // convert to a set of mimetypes to test each file against
            mimetypes = new HashSet<String>();
            for (StringTokenizer t = new StringTokenizer(mimetypeParam, ","); t.hasMoreTokens(); /**/) {
                mimetypes.add(t.nextToken());
            }
        }

        List<FileInfo> items = this.getFileFolderService().list(parentRef);

        JSONWriter out = new JSONWriter(fc.getResponseWriter());
        out.startObject();
        out.startValue(ID_PARENT);
        out.startObject();
        out.writeValue(ID_ID, parentRef.toString());
        out.writeValue(ID_NAME, Repository.getNameForNode(this.getInternalNodeService(), parentRef));
        if (parentRef.equals(companyHomeRef)) {
            out.writeValue(ID_ISROOT, true);
        }
        out.writeValue(ID_SELECTABLE, false);
        out.endObject();
        out.endValue();
        out.startValue(ID_CHILDREN);
        out.startArray();

        for (FileInfo item : items) {
            if (dd.isSubClass(this.getInternalNodeService().getType(item.getNodeRef()),
                    ContentModel.TYPE_FOLDER)) {
                // found a folder
                out.startObject();
                out.writeValue(ID_ID, item.getNodeRef().toString());
                String name = (String) item.getProperties().get(ContentModel.PROP_NAME);
                out.writeValue(ID_NAME, name);
                String icon = (String) item.getProperties().get(ApplicationModel.PROP_ICON);
                out.writeValue(ID_ICON, FOLDER_IMAGE_PREFIX
                        + (icon != null ? icon + "-16.gif" : BrowseBean.SPACE_SMALL_DEFAULT + ".gif"));
                out.writeValue(ID_SELECTABLE, false);
                out.endObject();
            } else {
                // must be a file
                boolean validFile = true;
                if (mimetypes != null) {
                    validFile = false;
                    ContentReader reader = cs.getReader(item.getNodeRef(), ContentModel.PROP_CONTENT);
                    if (reader != null) {
                        String mimetype = reader.getMimetype();
                        validFile = (mimetype != null && mimetypes.contains(mimetype));
                    }
                }
                if (validFile) {
                    out.startObject();
                    out.writeValue(ID_ID, item.getNodeRef().toString());
                    String name = (String) item.getProperties().get(ContentModel.PROP_NAME);
                    out.writeValue(ID_NAME, name);
                    String icon = FileTypeImageUtils.getFileTypeImage(fc, name, FileTypeImageSize.Small);
                    out.writeValue(ID_ICON, icon);
                    out.writeValue(ID_URL, DownloadContentServlet.generateBrowserURL(item.getNodeRef(), name));
                    out.endObject();
                }
            }
        }

        out.endArray();
        out.endValue();
        out.endObject();

        tx.commit();
    } catch (Throwable err) {
        Utils.addErrorMessage("PickerBean exception in getFileFolderNodes()", err);
        fc.getResponseWriter().write("ERROR: " + err.getMessage());
        try {
            if (tx != null) {
                tx.rollback();
            }
        } catch (Exception tex) {
        }
    }
}

From source file:org.alfresco.web.bean.BrowseBean.java

/**
 * Page accessed bean method to get the parent container nodes currently being browsed
 *
 * @return List of parent container Node objects for the current browse location
 *///from www. j av a  2s .c  om
public List<Node> getParentNodes(NodeRef currNodeRef) {
    // As per AWC-1507 there are two scenarios for navigating to the space details. First
    // scenario is to show space details of the current space. Second scenario is to show 
    // space details of a child space of the current space. For now, added an extra query
    // so that existing context remains unaffected for second scenario, although it does 
    // mean that in first scenario there will be an extra query even though parentContainerNodes
    // and containerNodes will contain the same list.

    if (this.parentContainerNodes == null) {
        long startTime = 0;
        if (logger.isDebugEnabled())
            startTime = System.currentTimeMillis();

        UserTransaction tx = null;
        try {
            FacesContext context = FacesContext.getCurrentInstance();
            tx = Repository.getUserTransaction(context, true);
            tx.begin();

            NodeRef parentRef = getNodeService().getPrimaryParent(currNodeRef).getParentRef();

            List<FileInfo> children = this.getFileFolderService().list(parentRef);
            this.parentContainerNodes = new ArrayList<Node>(children.size());
            for (FileInfo fileInfo : children) {
                // create our Node representation from the NodeRef
                NodeRef nodeRef = fileInfo.getNodeRef();

                // find it's type so we can see if it's a node we are interested in
                QName type = this.getNodeService().getType(nodeRef);

                // make sure the type is defined in the data dictionary
                TypeDefinition typeDef = this.getDictionaryService().getType(type);

                if (typeDef != null) {
                    MapNode node = null;

                    // look for Space folder node
                    if (this.getDictionaryService().isSubClass(type, ContentModel.TYPE_FOLDER) == true
                            && this.getDictionaryService().isSubClass(type,
                                    ContentModel.TYPE_SYSTEM_FOLDER) == false) {
                        // create our Node representation
                        node = new MapNode(nodeRef, this.getNodeService(), fileInfo.getProperties());
                        node.addPropertyResolver("icon", this.resolverSpaceIcon);
                        node.addPropertyResolver("smallIcon", this.resolverSmallIcon);

                        this.parentContainerNodes.add(node);
                    } else if (ApplicationModel.TYPE_FOLDERLINK.equals(type)) {
                        // create our Folder Link Node representation
                        node = new MapNode(nodeRef, this.getNodeService(), fileInfo.getProperties());
                        node.addPropertyResolver("icon", this.resolverSpaceIcon);
                        node.addPropertyResolver("smallIcon", this.resolverSmallIcon);

                        this.parentContainerNodes.add(node);
                    }
                } else {
                    if (logger.isWarnEnabled())
                        logger.warn("Found invalid object in database: id = " + nodeRef + ", type = " + type);
                }
            }

            // commit the transaction
            tx.commit();
        } catch (InvalidNodeRefException refErr) {
            Utils.addErrorMessage(MessageFormat.format(
                    Application.getMessage(FacesContext.getCurrentInstance(), Repository.ERROR_NODEREF),
                    new Object[] { refErr.getNodeRef() }), refErr);
            this.parentContainerNodes = Collections.<Node>emptyList();
            try {
                if (tx != null) {
                    tx.rollback();
                }
            } catch (Exception tex) {
            }
        } catch (Throwable err) {
            Utils.addErrorMessage(MessageFormat.format(
                    Application.getMessage(FacesContext.getCurrentInstance(), Repository.ERROR_GENERIC),
                    err.getMessage()), err);
            this.parentContainerNodes = Collections.<Node>emptyList();
            try {
                if (tx != null) {
                    tx.rollback();
                }
            } catch (Exception tex) {
            }
        }

        if (logger.isDebugEnabled()) {
            long endTime = System.currentTimeMillis();
            logger.debug("Time to query and build map parent nodes: " + (endTime - startTime) + "ms");
        }
    }

    List<Node> result = this.parentContainerNodes;

    // we clear the member variable during invalidateComponents()

    return result;
}