112 lines
3.1 KiB
Java
112 lines
3.1 KiB
Java
//This file is part of SECONDO.
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//Copyright (C) 2004, University in Hagen, Department of Computer Science,
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//Database Systems for New Applications.
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//SECONDO is free software; you can redistribute it and/or modify
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//it under the terms of the GNU General Public License as published by
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//the Free Software Foundation; either version 2 of the License, or
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//(at your option) any later version.
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//SECONDO 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
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//GNU General Public License for more details.
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//You should have received a copy of the GNU General Public License
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//along with SECONDO; 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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package viewer.hoese.algebras;
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import sj.lang.ListExpr;
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import viewer.hoese.DsplGeneric;
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import viewer.hoese.Interval;
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import viewer.hoese.LEUtils;
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import viewer.hoese.QueryResult;
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import tools.Reporter;
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import java.util.Vector;
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/**
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* A displayclass for the lengthstring type
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*/
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public class Dspllstring extends DsplGeneric {
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Interval LengthBounds;
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boolean err = true;
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boolean defined;
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Vector Intervals = new Vector(10,5);
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Vector Strings = new Vector(10,5);
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/**
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* Scans the representation of a lengthstring datatype
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* @param v A list of length-intervals with a string value
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* @see sj.lang.ListExpr
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* @see <a href="Dsplmovingboolsrc.html#ScanValue">Source</a>
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*/
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public void ScanValue (ListExpr v) {
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if(isUndefined(v)){
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defined=false;
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return;
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}
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defined = true;
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while (!v.isEmpty()) {
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ListExpr le = v.first();
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int len = le.listLength();
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ListExpr value;
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Interval in;
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if(len==2){
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in = LEUtils.readInterval(le.first());
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value = le.second();
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} else{ // wrong list length
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return;
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}
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if (in == null)
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return;
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Intervals.add(in);
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if (value.atomType() != ListExpr.STRING_ATOM)
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return;
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String b = value.stringValue();
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Strings.add(b);
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v = v.rest();
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}
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defined = true;
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err = false;
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}
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@Override
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public void init (String name, int nameWidth, int indent, ListExpr type, ListExpr value, QueryResult qr) {
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AttrName = extendString(name,nameWidth, indent);
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ScanValue(value);
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if (err) {
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Reporter.writeError("Error in ListExpr :parsing aborted");
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qr.addEntry((AttrName + ": List(lustring)"));
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defined=false;
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return;
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}
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else
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qr.addEntry(this);
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LengthBounds = null;
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for (int i = 0; i < Intervals.size(); i++) {
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Interval in = (Interval)Intervals.elementAt(i);
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if(!in.isInfinite()){
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if (LengthBounds == null) {
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LengthBounds = in;
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}
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else {
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LengthBounds = LengthBounds.union(in);
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}
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}
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}
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}
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/** The text representation of this object
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* @return
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* @see <a href="Dspllengthstringsrc.html#toString">Source</a>
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*/
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@Override
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public String toString () {
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return (AttrName + ": List(lustring)");
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}
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} |