81 lines
2.7 KiB
Java
81 lines
2.7 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.*;
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import viewer.hoese.*;
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import java.util.*;
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/**
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* A displayclass for the rangeint-type (spatiotemp algebra), alphanumeric only
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*/
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public class Dsplrangeint extends DsplGeneric {
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Vector ranges = new Vector(10, 5);
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/**
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* Scans the representation of a rangeint datatype, and constructs the ranges Vector
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* @param v A list of integer intervals
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* @see sj.lang.ListExpr
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* @see <a href="Dsplrangeintsrc.html#ScanValue">Source</a>
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*/
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private boolean ScanValue (ListExpr v) {
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int i = 0;
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while (!v.isEmpty()) {
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ListExpr le = v.first();
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if (le.listLength() != 4)
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return false;
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if ((le.first().atomType() != ListExpr.INT_ATOM) || (le.second().atomType()
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!= ListExpr.INT_ATOM) || (le.third().atomType() != ListExpr.BOOL_ATOM)
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|| (le.fourth().atomType() != ListExpr.BOOL_ATOM))
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return false;
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boolean leftcl = le.third().boolValue();
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boolean rightcl = le.fourth().boolValue();
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String left = (leftcl) ? "[" : "]";
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String right = (rightcl) ? "]" : "[";
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int firstval = le.first().intValue();
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int secondval = le.second().intValue();
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//ranges[i++]
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String s = new String(left + firstval + "," + secondval + right);
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ranges.add(s);
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v = v.rest();
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}
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return true;
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}
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public void init (String name, int nameWidth, int indent, ListExpr type, ListExpr value, QueryResult qr) {
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name = extendString(name, nameWidth, indent);
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String e = "";
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if ((!ScanValue(value)) || value.isEmpty())
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qr.addEntry("(" + name + ":[?,?]");
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else {
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//qr.addEntry(type.symbolValue()+": "+ranges); //.elementAt(0));
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for (int i = 0; i < ranges.size(); i += 1)
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e = e + " " + (String)ranges.elementAt(i);
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qr.addEntry(name + ":" + e);
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}
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return;
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}
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}
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