Here you can find the source of getNXInfo(Node xmlDoc, String NXclassPath, String NXclassNameList, String fieldName, String filename)
| Parameter | Description |
|---|---|
| xmlDoc | The top node( or what is left) of a DOM document |
| NXclassPath | A dot separated list of Nexus Classes. These appear as <NXentry name="... in the XML file. Only those parts of the xml document will be searched. This can be null for all NeXus classnames to be listed |
| NXclassNameList | The name of the NeXus Class. The name is in the name= attribute. This also can be null( all will be considered) , or a set |
| fieldName | The specific field name( tag or name attribute) to search for. No Dots |
| filename | The tag of the node must have a filename attribute corresponding to this filename |
public static Node getNXInfo(Node xmlDoc, String NXclassPath, String NXclassNameList, String fieldName, String filename)
//package com.java2s; /* //from w w w .j av a 2 s .c o m * File: Util.java * * Copyright (C) 2007 Ruth Mikkelson * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. * * Contact : Dennis Mikkelson<mikkelsond@uwstout.edu> * MSCS Department * HH237H * Menomonie, WI. 54751 * (715)-232-2291 * * This work was supported by the National Science Foundation under grant * number DMR-0426797, and by the Intense Pulsed Neutron Source Division * of Argonne National Laboratory, Argonne, IL 60439-4845, USA. * * * Modified: * $Log$ * Revision 1.7 2007/08/16 17:46:14 rmikk * Added GPL * Fixed calculations in working with non trailing *'s in position fields of a NeXus * file * */ import org.w3c.dom.*; public class Main { /** * Finds information in an XML document * @param xmlDoc The top node( or what is left) of a DOM document * @param NXclassPath A dot separated list of Nexus Classes. These appear as <NXentry name="... * in the XML file. Only those parts of the xml document will be searched. * This can be null for all NeXus classnames to be listed * @param NXclassNameList The name of the NeXus Class. The name is in the name= attribute. This also can * be null( all will be considered) , or a set * @param fieldName The specific field name( tag or name attribute) to search for. No Dots * @param filename The tag of the node must have a filename attribute corresponding to this filename * @return The top node or the value if only one simple child */ public static Node getNXInfo(Node xmlDoc, String NXclassPath, String NXclassNameList, String fieldName, String filename) { if (xmlDoc == null) return null; NXclassPath = standardize_dot_sep_list(NXclassPath); NXclassNameList = standardize_dot_sep_list(NXclassNameList); //fieldName = standardize_dot_sep_list( fieldName); if (filename != null && filename.length() < 1) filename = null; if (fieldName != null && fieldName.length() < 1) fieldName = null; NodeList children = xmlDoc.getChildNodes(); if (children.getLength() == 1) if ("data".equals(children.item(0).getNodeName())) { xmlDoc = children.item(0); children = xmlDoc.getChildNodes(); } if ((NXclassPath == null) && (NXclassNameList == null) && (fieldName == null) && (filename == null)) return xmlDoc; for (int ik = 0; ik < children.getLength(); ik++) { Node NN = children.item(ik); int k = -1; if (NXclassPath != null) k = NXclassPath.indexOf("." + NN.getNodeName() + "."); String ThisNodeName = null;//Non-null only if matches the match nodeName String ThisNodeFileName = null;//Non-null only if matches the match match filename boolean ClassHasName = false; boolean ClassHasFile = false; NamedNodeMap atts = NN.getAttributes(); if (NXclassNameList != null) { String NodeName2Match = NXclassNameList.substring(1, NXclassNameList.indexOf(".", 1)); if (NodeName2Match != null) NodeName2Match = NodeName2Match.trim(); if (NodeName2Match != null && NodeName2Match.length() < 1) NodeName2Match = null; if (NodeName2Match != null) if (NodeName2Match.trim().length() > 0) if (atts != null) { Node attNode = atts.getNamedItem("name"); if (attNode != null) ClassHasName = true; if (attNode != null) if (NodeName2Match.equals(attNode.getNodeValue())) ThisNodeName = NodeName2Match; } } if ((filename != null) && (atts != null)) { Node attNode = atts.getNamedItem("filename"); if (attNode != null) if (filename.equals(attNode.getNodeValue())) ThisNodeFileName = "xxx"; if (attNode != null) ClassHasFile = true; } boolean OkToEnter = false;// are there child nodes to search?? if ((NXclassPath != null) || (NXclassNameList != null)) if (filename == null) { if (k == 0) if (ThisNodeName != null) OkToEnter = true; if (k == 0) if ((ThisNodeName == null)) OkToEnter = true; if (k == 0) if (!ClassHasName) OkToEnter = true; if (NXclassPath == null) if (ThisNodeName != null) OkToEnter = true; if (NXclassPath == null) if (!ClassHasName) OkToEnter = true; } else { if (k == 0) if (ThisNodeName != null) if ((ThisNodeFileName != null) || !ClassHasFile) OkToEnter = true; if (k == 0) if ((NXclassNameList == null)) if ((ThisNodeFileName != null) || !ClassHasFile) OkToEnter = true; if (k == 0) if (!ClassHasName) if ((ThisNodeFileName != null) || !ClassHasFile) OkToEnter = true; if (NXclassPath == null) if (ThisNodeName != null) if ((ThisNodeFileName != null) || !ClassHasFile) OkToEnter = true; if (NXclassPath == null) if (!ClassHasName) if ((ThisNodeFileName != null) || !ClassHasFile) OkToEnter = true; } if (OkToEnter) {//Has child nodes to search //REDO How about adding a variable changed. if any of the other stuff changes // Woops go deeper cause child node and not done String Clist = null, CNameList = null; if (k >= 0 && NXclassPath != null) { k = NXclassPath.indexOf('.', k + 1); if (k >= 0) Clist = NXclassPath.substring(k); } if (ThisNodeFileName != null) filename = null; if (ThisNodeName != null && NXclassNameList != null) { k = NXclassNameList.indexOf("." + ThisNodeName + "."); if (k >= 0) { k = k + 2 + ThisNodeName.length(); CNameList = NXclassNameList.substring(k); } } else CNameList = NXclassNameList; Node X = getNXInfo(NN, Clist, CNameList, fieldName, filename); if (X != null) return X; } else if ((NXclassPath != null) || (NXclassNameList != null)) {//Check for fieldName Node X = getNXInfo(NN, NXclassPath, NXclassNameList, fieldName, filename); if (X != null) return X; } else { //Do not check child nodes. Check if this fits if (fieldName != null) if (fieldName.equals(NN.getNodeName())) return NN; atts = NN.getAttributes(); if (atts != null) { Node attNode = atts.getNamedItem("name"); if (fieldName != null) if (attNode != null) if (fieldName.equals(attNode.getNodeValue())) return NN; attNode = atts.getNamedItem("filename"); if ((filename != null) && (attNode != null)) if (filename.equals(attNode.getNodeValue())) return NN; } if ((fieldName == null) && (filename == null)) return NN; Node X = getNXInfo(NN, NXclassPath, NXclassNameList, fieldName, filename); if (X != null) return X; } } //for each child return null; } private static String standardize_dot_sep_list(String S) { if (S == null) return null; S = S.trim(); if (S.length() < 1) return null; if (!S.endsWith(".")) S += "."; if (!S.startsWith(".")) S = "." + S; if (S.length() <= 2) return null; //eliminate all dots boolean nonDotFound = false; for (int i = 0; i < S.length() && !nonDotFound; i++) if (S.charAt(i) != '.') if (S.charAt(i) != ' ') nonDotFound = true; if (!nonDotFound) return null; return S; } }