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/* |
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openisis - an open implementation of the CDS/ISIS database |
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Version 0.8.x (patchlevel see file Version) |
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Copyright (C) 2001-2003 by Erik Grziwotz, erik@openisis.org |
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|
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This library is free software; you can redistribute it and/or |
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modify it under the terms of the GNU Lesser General Public |
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License as published by the Free Software Foundation; either |
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version 2.1 of the License, or (at your option) any later version. |
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|
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This library is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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Lesser General Public License for more details. |
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|
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You should have received a copy of the GNU Lesser General Public |
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License along with this library; if not, write to the Free Software |
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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|
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see README for more information |
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EOH */ |
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|
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|
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package org.openisis; |
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|
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/** |
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convert Xmldocuments to Record |
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*/ |
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|
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import org.xml.sax.*; |
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import org.xml.sax.helpers.*; |
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import java.io.*; |
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import java.util.*; |
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|
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|
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public class XmlToRec { |
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|
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private XMLReader myReader; |
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private HashMap myTags; |
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private HashMap myAttributes; |
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private int myMaxTag; |
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private int myMaxRowId; |
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private OIHandler myHandler; |
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|
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public XmlToRec(XMLReader reader) { |
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myReader=reader; |
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myTags=new HashMap(); |
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myAttributes=new HashMap(); |
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myMaxTag=0; |
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myMaxRowId=0; |
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reader.setContentHandler(myHandler=new OIHandler()); |
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} |
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|
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public Fdt getFdt() { |
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if (myTags.size()>0) { |
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Iterator it=myTags.entrySet().iterator(); |
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Map.Entry e; |
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ArrayList fdl=new ArrayList(); |
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List att; |
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String atts; |
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while(it.hasNext()) { |
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e=(Map.Entry)it.next(); |
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att=(List)myAttributes.get(e.getKey()); |
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if (att!=null && att.size()>0) { |
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atts=""; |
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for(int i=0;i<att.size();i++) atts=atts+((char)('a'+i)); |
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} else atts=null; |
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fdl.add(new Fdt.Fd(((Integer)e.getValue()).intValue(),Fdt.FTX,Integer.MAX_VALUE,true,(String)e.getKey(),atts,"")); |
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} |
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Fdt.Fd fds[]=new Fdt.Fd[fdl.size()]; |
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for(int i=0;i<fds.length;i++) fds[i]=(Fdt.Fd)fdl.get(i); |
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Fdt fdt=new Fdt(fds); |
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return fdt; |
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} else return null; |
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} |
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|
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public int getTag(List path) { |
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StringBuffer tp=new StringBuffer(); |
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String s; |
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Integer ti; |
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/*for(int i=0;i<path.size();i++) tp.append(((String)path.get(i)).toLowerCase()); |
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s=tp.toString();*/ |
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s=(String)path.get(path.size()-1); |
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if ((ti=(Integer)myTags.get(s))!=null) { |
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return ti.intValue(); |
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} |
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myMaxTag++; |
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myTags.put(s,new Integer(myMaxTag)); |
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return myMaxTag; |
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} |
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|
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public char getAttTag(List path,String att) { |
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StringBuffer tp=new StringBuffer(); |
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String s; |
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//Integer ti; |
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//for(int i=0;i<path.size();i++) tp.append(((String)path.get(i)).toLowerCase()); |
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s=(String)path.get(path.size()-1); |
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ArrayList li; |
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if ((li=(ArrayList)myAttributes.get(s))==null) { |
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li=new ArrayList(); |
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myAttributes.put(s,li); |
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} |
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att=att.toLowerCase(); |
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int tag; |
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tag=li.indexOf(att); |
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if (tag<0) { |
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tag=li.size(); |
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li.add(att); |
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|
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} |
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return (char)(((int)'a')+tag); |
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} |
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|
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public Rec toRec(Reader reader) { |
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try { |
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myReader.parse(new InputSource(reader)); |
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} catch(Exception e) { |
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e.printStackTrace(); |
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return null; |
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} |
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return myHandler.getRecord(); |
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} |
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|
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public Rec toRec(String xml) { |
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return toRec(new StringReader(xml)); |
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} |
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|
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public int getNextRowId() { |
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return ++myMaxRowId; |
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} |
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|
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|
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class OINode { |
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String value=null; |
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HashMap attributes=null; |
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OINode() { |
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|
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} |
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} |
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|
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class OIHandler extends DefaultHandler { |
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|
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private Rec myRec; |
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private ArrayList myPath; |
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private ArrayList myNodes; |
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private ArrayList mySubRec; |
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|
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public void startDocument() |
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throws SAXException { |
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myPath=new ArrayList(); |
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myNodes=new ArrayList(); |
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mySubRec=new ArrayList(); |
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myRec=new Rec(getNextRowId()); |
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} |
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|
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/*public void setRecord(Rec rec) { |
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myRec=rec; |
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}*/ |
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|
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public Rec getRecord() { |
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return myRec; |
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} |
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|
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public void startElement(java.lang.String uri, |
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java.lang.String localName, |
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java.lang.String qName, |
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Attributes attributes) throws SAXException |
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{ |
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myPath.add(localName); |
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OINode node; |
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StringBuffer value=new StringBuffer(); |
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//myNodes.add(node=new OINode()); |
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if (attributes.getLength()>0) { |
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//node.attributes=new HashMap(); |
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for(int i=0;i<attributes.getLength();i++) { |
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//node.attributes.put(new Character(getAttTag(myPath,attributes.getLocalName(i))),attributes.getValue(i)); |
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value.append('^'); |
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value.append(new Character(getAttTag(myPath,attributes.getLocalName(i)))); |
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value.append(attributes.getValue(i)); |
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} |
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} |
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/*if (mySubRec.size()>0) { |
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Object tO=mySubRec.get(mySubRec.size()-1); |
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if (tO instanceof Field) { |
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mySubRec.remove(mySubRec.size()-1); |
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Rec r=new Rec(0); |
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r.append((Field)tO); |
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mySubRec.add(r); |
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} |
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}*/ |
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Rec r=new Rec(0); |
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r.append(new Field(getTag(myPath),value.length()==0?null:value.toString())); |
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mySubRec.add(r); |
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super.startElement(uri,localName,qName,attributes); |
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} |
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|
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|
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public void endElement(java.lang.String uri, |
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java.lang.String localName, |
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java.lang.String qName) throws SAXException { |
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if (mySubRec.size()>=2) { |
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Object tO=mySubRec.get(mySubRec.size()-1); |
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Rec r=(Rec)mySubRec.get(mySubRec.size()-2); |
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if (tO instanceof Field) { |
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r.append((Field)tO); |
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} else { |
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//Rec r2=new Rec(r.getRowId()); |
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//r2.wrap((Rec)tO,Integer.MAX_VALUE); |
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r.wrap((Rec)tO,Integer.MAX_VALUE); |
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} |
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Rec r2=new Rec(r.getRowId()); |
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r2.append(r.getFields(0,1)); |
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r2.wrap(new Rec(0,r.getFields(1,r.getLen())),Integer.MAX_VALUE); |
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//r2.wrap(r,Integer.MAX_VALUE); |
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mySubRec.set(mySubRec.size()-2,r2); |
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} else { |
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if (mySubRec.size()==1) { |
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|
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myRec=(Rec)mySubRec.get(mySubRec.size()-1); |
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//myRec=new Rec(r.getRowId()); |
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//myRec.wrap(r,Integer.MAX_VALUE); |
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//myRec=(Rec)mySubRec.get(mySubRec.size()-1); |
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} |
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} |
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myPath.remove(myPath.size()-1); |
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//myNodes.remove(myNodes.size()-1); |
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mySubRec.remove(mySubRec.size()-1); |
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super.endElement(uri,localName,qName); |
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} |
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|
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public void characters(char[] ch, |
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int start, |
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int length) |
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throws SAXException { |
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//OINode node=(OINode)myNodes.get(myPath.size()-1); |
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Object tO=mySubRec.get(mySubRec.size()-1); |
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String value=null; |
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Field f=null; |
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Rec r=null; |
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if (tO instanceof Field) { |
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f=(Field)tO; |
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value=f.val; |
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} else { |
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r=(Rec)tO; |
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f=r.get(0); |
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value=f.val; |
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} |
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if (value==null || value.length()==0) { |
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value=new String(ch,start,length); |
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} else { |
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value=new String(ch,start,length)+value; |
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} |
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if (r==null) { |
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mySubRec.set(mySubRec.size()-1,new Field(f.tag,value)); |
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} else { |
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r.set(0,new Field(f.tag,value)); |
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} |
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} |
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|
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public void endDocument() throws SAXException { |
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//myRec=null; |
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super.endDocument(); |
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} |
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|
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} |
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|
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} |
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